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        121 Permanent API jobs in Essex + 20 miles

        263 exact matches jobs are outside your preferred location

        Front-end Engineer

        FBI &TMT
        London
        Up to £65000.00 per annum
        We are seeking an experienced Front-end Engineer to help build and evolve a web-based platform for reinforcement learning (RL) training and RLOps. You will design, implement, and optimise user-facing interfaces and front-end systems that support large-scale RL model development and deployment. Responsibilities * Develop scalable, reliable front-end architecture for an RL training and management platform * Translate requirements into high-quality user interfaces and workflows * Collaborate with designers and engineers to implement visual design within brand guidelines * Ensure cross-browser and cross-device compatibility, resolving UI/UX issues * Optimise performance, including load times and runtime efficiency * Ensure accessibility compliance (e.g., WCAG) * Identify and resolve user-facing bugs and usability issues
        We are seeking an experienced Front-end Engineer to help build and evolve a web-based platform for reinforcement learning (RL) training and RLOps. You will design, implement, and optimise user-facing interfaces and front-end systems that support large-scale RL model development and deployment. Responsibilities * Develop scalable, reliable front-end architecture for an RL training and management platform * Translate requirements into high-quality user interfaces and workflows * Collaborate with designers and engineers to implement visual design within brand guidelines * Ensure cross-browser and cross-device compatibility, resolving UI/UX issues * Optimise performance, including load times and runtime efficiency * Ensure accessibility compliance (e.g., WCAG) * Identify and resolve user-facing bugs and usability issues
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        Job Title: Observability Developer / Engineer - Location: Hybrid (UK, with travel as required) Employment Type: Full-time - This role is with Morela please respond to for further informaiton - Do you want to be part of something special? Morela is proud to represent our exclusive client, a fast-growing start-up transforming Service Operations. Led by industry leaders with a proven track record of building and scaling successful businesses, this company is redefining how enterprises monitor, manage, and optimise IT operations. This is your chance to join a team shaping the future of observability and operational intelligence from the ground up. We are seeking a skilled Observability Developer to design, build, and optimise observability solutions that help enterprise clients gain actionable insights from their logs, metrics, traces, and events.
        Job Title: Observability Developer / Engineer - Location: Hybrid (UK, with travel as required) Employment Type: Full-time - This role is with Morela please respond to for further informaiton - Do you want to be part of something special? Morela is proud to represent our exclusive client, a fast-growing start-up transforming Service Operations. Led by industry leaders with a proven track record of building and scaling successful businesses, this company is redefining how enterprises monitor, manage, and optimise IT operations. This is your chance to join a team shaping the future of observability and operational intelligence from the ground up. We are seeking a skilled Observability Developer to design, build, and optimise observability solutions that help enterprise clients gain actionable insights from their logs, metrics, traces, and events.
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        LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. Its how weve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services and our open-access model we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.
        LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. Its how weve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services and our open-access model we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.
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        Were looking for an enthusiastic Senior/Staff Software Engineer who knows about graphics and GPU drivers, has a curious mind, and a passion for making high-impact products to join the Customer Engineering Team at ARMs GPU Group! In this role you will work on flagship devices with the world's most successful mobile companies. Take the skills you have developed in early engineering career and see them used in a wider business context. Be part of and be well supported by a team of experts! * Developing the high-level graphics APIs of our Mali driver: Vulkan, OpenCL, OpenGL ES, EGL. * Working with some of the biggest names in the consumer electronics space on their latest and greatest platforms. * Integrate and optimise our software into their flagship devices to show the world what Mali can do. * Experienced with graphics APIs such as Vulkan, OpenGL ES, and EGL (Khronos)
        Were looking for an enthusiastic Senior/Staff Software Engineer who knows about graphics and GPU drivers, has a curious mind, and a passion for making high-impact products to join the Customer Engineering Team at ARMs GPU Group! In this role you will work on flagship devices with the world's most successful mobile companies. Take the skills you have developed in early engineering career and see them used in a wider business context. Be part of and be well supported by a team of experts! * Developing the high-level graphics APIs of our Mali driver: Vulkan, OpenCL, OpenGL ES, EGL. * Working with some of the biggest names in the consumer electronics space on their latest and greatest platforms. * Integrate and optimise our software into their flagship devices to show the world what Mali can do. * Experienced with graphics APIs such as Vulkan, OpenGL ES, and EGL (Khronos)
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        FTSE Russell | LSEG Technology - FTSE Russell is a leading global provider of financial services, specializing in the creation and management of indexes, data, and analytic solutions. A subsidiary of the London Stock Exchange Group (LSEG), FTSE Russell supports investors worldwide in making informed decisions across asset classes, investment strategies, and market segments. Its products are trusted by institutional and retail investors, asset managers, and pension funds to benchmark performance, build investment portfolios, and manage risk. With a reputation for innovation, transparency, and robust governance, FTSE Russell plays a critical role in shaping global financial markets. FTSE Russell is seeking a junior software engineer to be part a dynamic team building the distribution capabilities of our index products to the financial community worldwide.
        FTSE Russell | LSEG Technology - FTSE Russell is a leading global provider of financial services, specializing in the creation and management of indexes, data, and analytic solutions. A subsidiary of the London Stock Exchange Group (LSEG), FTSE Russell supports investors worldwide in making informed decisions across asset classes, investment strategies, and market segments. Its products are trusted by institutional and retail investors, asset managers, and pension funds to benchmark performance, build investment portfolios, and manage risk. With a reputation for innovation, transparency, and robust governance, FTSE Russell plays a critical role in shaping global financial markets. FTSE Russell is seeking a junior software engineer to be part a dynamic team building the distribution capabilities of our index products to the financial community worldwide.
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        FTSE Russell | LSEG Technology - FTSE Russell is a leading global provider of financial services, specializing in the creation and management of indexes, data, and analytic solutions. A subsidiary of the London Stock Exchange Group (LSEG), FTSE Russell supports investors worldwide in making informed decisions across asset classes, investment strategies, and market segments. Its products are trusted by institutional and retail investors, asset managers, and pension funds to benchmark performance, build investment portfolios, and manage risk. With a reputation for innovation, transparency, and robust governance, FTSE Russell plays a critical role in shaping global financial markets. FTSE Russell is seeking a senior software engineer to be part a dynamic team of software engineers building all distribution capabilities of our index products to the financial community wor
        FTSE Russell | LSEG Technology - FTSE Russell is a leading global provider of financial services, specializing in the creation and management of indexes, data, and analytic solutions. A subsidiary of the London Stock Exchange Group (LSEG), FTSE Russell supports investors worldwide in making informed decisions across asset classes, investment strategies, and market segments. Its products are trusted by institutional and retail investors, asset managers, and pension funds to benchmark performance, build investment portfolios, and manage risk. With a reputation for innovation, transparency, and robust governance, FTSE Russell plays a critical role in shaping global financial markets. FTSE Russell is seeking a senior software engineer to be part a dynamic team of software engineers building all distribution capabilities of our index products to the financial community wor
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        Senior ML Engineer

        Oscar Associates (UK) Limited
        London
        £70000 - £90000 per annum
        Senior Machine Learning Engineer - Salary: £70,000-£90,000 - Location: London (Hybrid) The Opportunity - We're looking for a Senior Machine Learning Engineer to help design, build, and deliver next-generation AI systems. You will work across LLMs, retrieval-augmented generation (RAG), and modern agent frameworks to transform large, unstructured data into meaningful insights and production-ready capabilities. This is a hands-on role within a growing AI team, offering the chance to shape architecture, build scalable pipelines, and ship features that directly impact users. Responsibilities * Develop, integrate, and fine-tune LLMs for natural-language understanding, reasoning, and workflow automation. * Build agentic/LLM-driven workflows for multi-step decision making across diverse data sources. * Architect and deliver ML features such as pattern recognition, entity extr
        Senior Machine Learning Engineer - Salary: £70,000-£90,000 - Location: London (Hybrid) The Opportunity - We're looking for a Senior Machine Learning Engineer to help design, build, and deliver next-generation AI systems. You will work across LLMs, retrieval-augmented generation (RAG), and modern agent frameworks to transform large, unstructured data into meaningful insights and production-ready capabilities. This is a hands-on role within a growing AI team, offering the chance to shape architecture, build scalable pipelines, and ship features that directly impact users. Responsibilities * Develop, integrate, and fine-tune LLMs for natural-language understanding, reasoning, and workflow automation. * Build agentic/LLM-driven workflows for multi-step decision making across diverse data sources. * Architect and deliver ML features such as pattern recognition, entity extr
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        The LSEG DevSecOps Engineering team inside the cyber security division is looking for Senior Software Engineers to build tools and automations to help secure software development for thousands of developers across the group. You will be working as part of a geographically distributed remote team comprising of security engineers and software engineers. Our teams mission is to allow engineers to embed security best practices frictionlessly as part of their day to day work. * Deep understanding of cyber security principles, secure software development, and threat modeling * Experience conducting security assessments, code reviews, and vulnerability management across diverse technology stacks * Experience in building full-stack products (web applications, APIs, CI tooling or low-level software) * Hands-on experience with cloud technologies (AWS, GCP, Azure) and containers
        The LSEG DevSecOps Engineering team inside the cyber security division is looking for Senior Software Engineers to build tools and automations to help secure software development for thousands of developers across the group. You will be working as part of a geographically distributed remote team comprising of security engineers and software engineers. Our teams mission is to allow engineers to embed security best practices frictionlessly as part of their day to day work. * Deep understanding of cyber security principles, secure software development, and threat modeling * Experience conducting security assessments, code reviews, and vulnerability management across diverse technology stacks * Experience in building full-stack products (web applications, APIs, CI tooling or low-level software) * Hands-on experience with cloud technologies (AWS, GCP, Azure) and containers
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        FTSE Russell is a leading global provider of financial services, specializing in the creation and management of indexes, data, and analytic solutions. A subsidiary of the London Stock Exchange Group (LSEG), FTSE Russell supports investors worldwide in making informed decisions across asset classes, investment strategies, and market segments. Its products are trusted by institutional and retail investors, asset managers, and pension funds to benchmark performance, build investment portfolios, and manage risk. With a reputation for innovation, transparency, and robust governance, FTSE Russell plays a critical role in shaping global financial markets. FTSE Russell is seeking a hands-on dynamic software development leader to drive a team of software engineers building robust equity index capabilities and indexes.
        FTSE Russell is a leading global provider of financial services, specializing in the creation and management of indexes, data, and analytic solutions. A subsidiary of the London Stock Exchange Group (LSEG), FTSE Russell supports investors worldwide in making informed decisions across asset classes, investment strategies, and market segments. Its products are trusted by institutional and retail investors, asset managers, and pension funds to benchmark performance, build investment portfolios, and manage risk. With a reputation for innovation, transparency, and robust governance, FTSE Russell plays a critical role in shaping global financial markets. FTSE Russell is seeking a hands-on dynamic software development leader to drive a team of software engineers building robust equity index capabilities and indexes.
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        Role Summary - LSEGs ambition is to be one of the worlds greatest companies and best places to work. To achieve this, we are on a journey of building a world class engineering function supporting our Customer Data Master (CDM) Platform team. The team has embarked on a journey to provide internal teams and platform teams with a fully managed customer data master platform. The role will take part in the definition of the CDM strategy and execution of the CDM engineering strategy and deliver the technology capability, in line with the Corporate Engineering (CE) strategy which includes evolving our current master data capability. What youll be doing * Lead and scale a senior engineering team (currently 5, growing to ~10) to design, build and operate the MDM , CDM and Customer 360 platforms as a product, with clear ownership, measurable outcomes, and a roadmap aligned to b
        Role Summary - LSEGs ambition is to be one of the worlds greatest companies and best places to work. To achieve this, we are on a journey of building a world class engineering function supporting our Customer Data Master (CDM) Platform team. The team has embarked on a journey to provide internal teams and platform teams with a fully managed customer data master platform. The role will take part in the definition of the CDM strategy and execution of the CDM engineering strategy and deliver the technology capability, in line with the Corporate Engineering (CE) strategy which includes evolving our current master data capability. What youll be doing * Lead and scale a senior engineering team (currently 5, growing to ~10) to design, build and operate the MDM , CDM and Customer 360 platforms as a product, with clear ownership, measurable outcomes, and a roadmap aligned to b
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        ££60,000 - £110,000 GBP + Package - Hybrid WORKING - Location: London;Cheltenham;Bournemouth, Central London, Greater London - United Kingdom Type: Permanent - Location: Cheltenham, London, Bournemouth - Consultative travel required - Clearance: Must be a sole British National, elligable or holding SC or DV - Salary: £60,000 - £110,000 (Depandant on grade) A leading digital consultancy is looking for a Senior Data Scientist to lead and deliver cutting-edge AI/ML solutions for clients across UK defence and public sector. This is a hands-on, strategic position for someone who thrives at the intersection of data science, client delivery, and software product design. What You'll Be Doing * Lead technical project delivery and shape data science strategy across multiple client engagements * Define and implement bespoke machine learning algorithms to solve real-world defence
        ££60,000 - £110,000 GBP + Package - Hybrid WORKING - Location: London;Cheltenham;Bournemouth, Central London, Greater London - United Kingdom Type: Permanent - Location: Cheltenham, London, Bournemouth - Consultative travel required - Clearance: Must be a sole British National, elligable or holding SC or DV - Salary: £60,000 - £110,000 (Depandant on grade) A leading digital consultancy is looking for a Senior Data Scientist to lead and deliver cutting-edge AI/ML solutions for clients across UK defence and public sector. This is a hands-on, strategic position for someone who thrives at the intersection of data science, client delivery, and software product design. What You'll Be Doing * Lead technical project delivery and shape data science strategy across multiple client engagements * Define and implement bespoke machine learning algorithms to solve real-world defence
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        PREMIUM
        Sanderson are working closely with a SME based in the London who are looking to grow their Java Developer capability. The company are looking to modernise how organisations manage and derive data. They are fast growing and looking for dynamics people to help them grow the business and capability. * Strong experience in Java software engineering. Experience with Spring Boot, REST APIs, and microservice architectures * Knowledge of Docker and Kubernetes for containerisation * Exposure to cloud platforms such as AWS - This role will require eligibility to be clearable to SC level. If you're interested in the above, apply or reach out to - Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives.
        Sanderson are working closely with a SME based in the London who are looking to grow their Java Developer capability. The company are looking to modernise how organisations manage and derive data. They are fast growing and looking for dynamics people to help them grow the business and capability. * Strong experience in Java software engineering. Experience with Spring Boot, REST APIs, and microservice architectures * Knowledge of Docker and Kubernetes for containerisation * Exposure to cloud platforms such as AWS - This role will require eligibility to be clearable to SC level. If you're interested in the above, apply or reach out to - Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives.
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        FEATURED

        AI Engineer

        Sanderson Recruitment
        London
        £70000 - £80000 per annum + Benefits
        Job Role: AI Engineer - Working Model: Permanent - Location: Hybrid - London - Salary: Up to £80,000 + Benefits - Are you a hands-on AI engineer looking to build, deploy, and optimize AI-driven solutions? Do you want to work with Generative AI, LLMs, and cloud deployments in a collaborative, fast-moving environment? This is an exciting opportunity to join a growing AI team, contribute to cutting-edge projects, and develop your skills with mentorship from senior engineers. You'll work on AI-powered applications, RAG pipelines, and model fine-tuning, solving real business problems. About the Role * Design, implement, and fine-tune LLMs and generative AI solutions (OpenAI, Anthropic Claude, Gemini, open-source models) * Build and optimize RAG pipelines, vector databases, and prompt engineering strategies * Develop AI-powered applications integrating LLMs with APIs, agent
        Job Role: AI Engineer - Working Model: Permanent - Location: Hybrid - London - Salary: Up to £80,000 + Benefits - Are you a hands-on AI engineer looking to build, deploy, and optimize AI-driven solutions? Do you want to work with Generative AI, LLMs, and cloud deployments in a collaborative, fast-moving environment? This is an exciting opportunity to join a growing AI team, contribute to cutting-edge projects, and develop your skills with mentorship from senior engineers. You'll work on AI-powered applications, RAG pipelines, and model fine-tuning, solving real business problems. About the Role * Design, implement, and fine-tune LLMs and generative AI solutions (OpenAI, Anthropic Claude, Gemini, open-source models) * Build and optimize RAG pipelines, vector databases, and prompt engineering strategies * Develop AI-powered applications integrating LLMs with APIs, agent
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        FEATURED

        AI Lead

        Sanderson Recruitment
        London
        £95000 - £100000 per annum + benefits
        Job Role: AI Lead - Working Model: Permanent - Location: Hybrid - London - Salary: up to £100,000 - Are you a hands-on AI Lead passionate about Generative AI, LLMs, and cloud deployments? Do you enjoy designing, developing, and deploying AI-driven solutions that solve real business problems? This is an exciting opportunity to join a dynamic AI team and contribute to cutting-edge projects in Insurtech and Fintech. You'll work closely with cross-functional teams to build scalable AI applications, fine-tune LLMs, and integrate AI capabilities across platforms. About the Role * Lead the design, implementation, and fine-tuning of LLMs and generative AI solutions (OpenAI, Anthropic Claude, Gemini, open-source models). * Build and optimize RAG pipelines, vector databases, and prompt engineering strategies. * Develop AI-powered applications integrating LLMs with APIs, agents,
        Job Role: AI Lead - Working Model: Permanent - Location: Hybrid - London - Salary: up to £100,000 - Are you a hands-on AI Lead passionate about Generative AI, LLMs, and cloud deployments? Do you enjoy designing, developing, and deploying AI-driven solutions that solve real business problems? This is an exciting opportunity to join a dynamic AI team and contribute to cutting-edge projects in Insurtech and Fintech. You'll work closely with cross-functional teams to build scalable AI applications, fine-tune LLMs, and integrate AI capabilities across platforms. About the Role * Lead the design, implementation, and fine-tuning of LLMs and generative AI solutions (OpenAI, Anthropic Claude, Gemini, open-source models). * Build and optimize RAG pipelines, vector databases, and prompt engineering strategies. * Develop AI-powered applications integrating LLMs with APIs, agents,
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        FEATURED
        Expertise in Pentaho Data Integration for ETL processes. Strong understanding of data warehousing concepts, data modelling, and schema design. Experience with other ETL tools (Informatica, Talend, SSIS) is a plus. Advanced SQL for querying and data manipulation. Familiarity with Java, Python, or VBA for scripting and automation. Knowledge of RESTful APIs and various database systems. Skills in data profiling, data analysis, and ensuring data quality. Experience 612 years in Data Integration and ETL development. Minimum 35 years of hands-on Pentaho experience. Leading complex ETL projects and working with cross-functional teams. Exposure to Banking/Financial Services domain is a plus. Preferred Qualifications Certifications in Pentaho, Big Data, or Cloud Platforms (AWS/GCP/Azure). Experience with Big Data technologies (Hadoop, Spark) and cloud data services.
        Expertise in Pentaho Data Integration for ETL processes. Strong understanding of data warehousing concepts, data modelling, and schema design. Experience with other ETL tools (Informatica, Talend, SSIS) is a plus. Advanced SQL for querying and data manipulation. Familiarity with Java, Python, or VBA for scripting and automation. Knowledge of RESTful APIs and various database systems. Skills in data profiling, data analysis, and ensuring data quality. Experience 612 years in Data Integration and ETL development. Minimum 35 years of hands-on Pentaho experience. Leading complex ETL projects and working with cross-functional teams. Exposure to Banking/Financial Services domain is a plus. Preferred Qualifications Certifications in Pentaho, Big Data, or Cloud Platforms (AWS/GCP/Azure). Experience with Big Data technologies (Hadoop, Spark) and cloud data services.
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        Technical Lead

        83zero Limited
        London
        £90000 - £110000 per annum + Plus benefits
        83zero is proud to partner with a high-growth startup that's redefining the B2B2C social media space. They're building a next-generation Platform-as-a-Service already making waves across global media ecosystems - and now they need a DevOps Leader to help scale it to the next level. Why This Role? This isn't just another leadership position. You'll own the technical vision for a serverless, event-driven, globally distributed platform on AWS. You'll lead a talented, distributed engineering team, shape high-performance APIs, and build systems that scale fast and run clean. What's On Offer * Competitive salary + performance bonus * Meaningful equity - build it, own it, grow with it * Hybrid/remote-first working culture * A seat at the decision-making table in a fast-scaling SaaS business * Real autonomy, rapid progression, and zero bureaucracy
        83zero is proud to partner with a high-growth startup that's redefining the B2B2C social media space. They're building a next-generation Platform-as-a-Service already making waves across global media ecosystems - and now they need a DevOps Leader to help scale it to the next level. Why This Role? This isn't just another leadership position. You'll own the technical vision for a serverless, event-driven, globally distributed platform on AWS. You'll lead a talented, distributed engineering team, shape high-performance APIs, and build systems that scale fast and run clean. What's On Offer * Competitive salary + performance bonus * Meaningful equity - build it, own it, grow with it * Hybrid/remote-first working culture * A seat at the decision-making table in a fast-scaling SaaS business * Real autonomy, rapid progression, and zero bureaucracy
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        Job Title: Marketing Automation & AI Engineer (Remote) Salary: £70k open to negotiation DOE - Location: Remote-first role with a preference for London proximity - A fast-growing B2B FinTech scale-up (modular banking & payments infrastructure) is building a brand-new function at the intersection of Marketing, AI, and Automation, and they're looking for the engineer who will help shape it from day one. What You'll Work On * Architect and optimise n8n / Zapier / Make workflows that power the marketing engine * Build AI-driven agents, automations, and internal tools that improve traffic, conversions, and lead flow * Turn insights ? hypotheses ? experiments ? measurable outcomes * Spot signals in noisy data and connect them into actionable patterns * Explore emerging AI/automation tools and apply them to real go-to-market systems
        Job Title: Marketing Automation & AI Engineer (Remote) Salary: £70k open to negotiation DOE - Location: Remote-first role with a preference for London proximity - A fast-growing B2B FinTech scale-up (modular banking & payments infrastructure) is building a brand-new function at the intersection of Marketing, AI, and Automation, and they're looking for the engineer who will help shape it from day one. What You'll Work On * Architect and optimise n8n / Zapier / Make workflows that power the marketing engine * Build AI-driven agents, automations, and internal tools that improve traffic, conversions, and lead flow * Turn insights ? hypotheses ? experiments ? measurable outcomes * Spot signals in noisy data and connect them into actionable patterns * Explore emerging AI/automation tools and apply them to real go-to-market systems
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        Customer Success Manager

        Oscar Associates (UK) Limited
        London
        Up to £48000 per annum
        Job Title: Customer Success Manager - Location: London, (Bishopsgate) - Hybrid (3 days WFH, 2 days on site) Salary: Up to £48,000 - As a Customer Success Manager, you'll be the bridge between clients and internal technical teams, ensuring seamless integration, onboarding, and long-term satisfaction. You'll manage integration support cases, monitor performance, and proactively resolve challenges to keep clients engaged and successful. This company are a global Ai focused consultancy shaping the future of their industry. They blend deep actuarial expertise with Ai to help their clients grow sustainably. With over a dozen offices across the EMEA and US offices, they champion diversity, collaboration, and are at the forefront of consumer-centric tech in their industry. They are making a real impact on their industry worldwide.
        Job Title: Customer Success Manager - Location: London, (Bishopsgate) - Hybrid (3 days WFH, 2 days on site) Salary: Up to £48,000 - As a Customer Success Manager, you'll be the bridge between clients and internal technical teams, ensuring seamless integration, onboarding, and long-term satisfaction. You'll manage integration support cases, monitor performance, and proactively resolve challenges to keep clients engaged and successful. This company are a global Ai focused consultancy shaping the future of their industry. They blend deep actuarial expertise with Ai to help their clients grow sustainably. With over a dozen offices across the EMEA and US offices, they champion diversity, collaboration, and are at the forefront of consumer-centric tech in their industry. They are making a real impact on their industry worldwide.
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        6+ years of work experience in software development and hands-on experience in building large-scale services/distributed systems. * Shopify platform experiences a MUST. * Experience in Shopify Hydrogen framework built with React that allows developers to create custom, high-performance storefronts for Shopify, effectively using a headless approach * Experience in building end to end eCommerce technology solutions with Shopify and associated systems (OMS, IMS, WMS, credit card processing, tax engine, digital distribution etc.) * Strong proficiency in modern design patterns and development languages including JavaScript, Typescript, Python, HTML5, CSS3, HTML-CSS-Bootstrap and Ruby * Experienced in NodeJS, JavaScript (ES2019+), ESLint and coding standards, Typescript * Solid grounding with common design patterns and development best practices
        6+ years of work experience in software development and hands-on experience in building large-scale services/distributed systems. * Shopify platform experiences a MUST. * Experience in Shopify Hydrogen framework built with React that allows developers to create custom, high-performance storefronts for Shopify, effectively using a headless approach * Experience in building end to end eCommerce technology solutions with Shopify and associated systems (OMS, IMS, WMS, credit card processing, tax engine, digital distribution etc.) * Strong proficiency in modern design patterns and development languages including JavaScript, Typescript, Python, HTML5, CSS3, HTML-CSS-Bootstrap and Ruby * Experienced in NodeJS, JavaScript (ES2019+), ESLint and coding standards, Typescript * Solid grounding with common design patterns and development best practices
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        Principal Software Engineer - Frontend

        Fruition Group
        London
        £95000 - £120000 per annum + Equity + Benefits
        London (Remote First - Occasional travel) Salary: £95,000 - £120,000 + equity + benefits - An established, global technology business within the hospitality-tech industry is seeking a talented Principal Frontend Software Engineer to help build and scale cutting-edge digital solutions. This is a chance to work on greenfield projects - building new, scalable products that help venues create seamless, data-driven guest experiences from the ground up. * Set the technical vision and architectural direction for frontend systems, ensuring performance, scalability, and maintainability across complex products. * Lead design and delivery of modern, component-based web applications built with TypeScript, React, and Redux, integrating seamlessly with cloud-based APIs and data pipelines. * Collaborate with engineering, design, and product leadership to define long-term frontend st
        London (Remote First - Occasional travel) Salary: £95,000 - £120,000 + equity + benefits - An established, global technology business within the hospitality-tech industry is seeking a talented Principal Frontend Software Engineer to help build and scale cutting-edge digital solutions. This is a chance to work on greenfield projects - building new, scalable products that help venues create seamless, data-driven guest experiences from the ground up. * Set the technical vision and architectural direction for frontend systems, ensuring performance, scalability, and maintainability across complex products. * Lead design and delivery of modern, component-based web applications built with TypeScript, React, and Redux, integrating seamlessly with cloud-based APIs and data pipelines. * Collaborate with engineering, design, and product leadership to define long-term frontend st
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        Are you passionate about creating high-performing, flexible, and reusable web applications? Arms Digital Team is looking for a Full Stack Developer to join our Global Marketing group, helping build and evolve our flagship commercial websites. This is an exciting opportunity to give to high-visibility projects and craft special digital experiences that reach millions of users * Develop and maintain Arms key marketing websites and digital experiences * Translate visual designs and business requirements into clean, performant, and accessible web solutions * Follow Arms software development lifecycle and give to the roadmap for our frontend framework * Leverage AI tools to accelerate development and improve code quality * Collaborate with IT, architecture, security, legal, and external development partners
        Are you passionate about creating high-performing, flexible, and reusable web applications? Arms Digital Team is looking for a Full Stack Developer to join our Global Marketing group, helping build and evolve our flagship commercial websites. This is an exciting opportunity to give to high-visibility projects and craft special digital experiences that reach millions of users * Develop and maintain Arms key marketing websites and digital experiences * Translate visual designs and business requirements into clean, performant, and accessible web solutions * Follow Arms software development lifecycle and give to the roadmap for our frontend framework * Leverage AI tools to accelerate development and improve code quality * Collaborate with IT, architecture, security, legal, and external development partners
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        We are seeking an experienced IT Project Manager / Business Analyst to manage the delivery and enhancement of cloud-based and outsourced IT solutions, ensuring they align with business needs and deliver measurable value. This role combines project management and business analysis responsibilities, focusing on coordinating vendors, defining business requirements, and ensuring successful implementation and adoption of third-party solutions. Additionally, you will join an organisation actively investing in Generative AI and Agentic AI technologies to automate both routine and complex tasks to increase efficiency, enhance decision-making and reduce operational risk. The role offers the opportunity to contribute to projects that explore the integration of AI capabilities into business processes and systems. Key Responsibilities - Project Management
        We are seeking an experienced IT Project Manager / Business Analyst to manage the delivery and enhancement of cloud-based and outsourced IT solutions, ensuring they align with business needs and deliver measurable value. This role combines project management and business analysis responsibilities, focusing on coordinating vendors, defining business requirements, and ensuring successful implementation and adoption of third-party solutions. Additionally, you will join an organisation actively investing in Generative AI and Agentic AI technologies to automate both routine and complex tasks to increase efficiency, enhance decision-making and reduce operational risk. The role offers the opportunity to contribute to projects that explore the integration of AI capabilities into business processes and systems. Key Responsibilities - Project Management
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        The PE AI Transformation team is redefining how AI powers engineering at Arm! We partner with engineering teams across Arm to deliver real-world impact through applied AIboosting productivity, fueling innovation, and making powerful AI tools part of every engineers workflow. Guided by our visionengineering redefined through smarter workflows, faster execution, and greater creativitywere building systems that let technology amplify human potential. As an AI Engineer, youll be hands-on in designing, developing, and deploying AI capabilities that reshape how engineers work. Youll learn from experienced AI architects and senior engineers, gaining exposure to sophisticated system design and scaling patterns, while supplying your own technical depth to deliver robust, high-quality solutions. Youll also mentor junior peers and share practical insights gained through your wor
        The PE AI Transformation team is redefining how AI powers engineering at Arm! We partner with engineering teams across Arm to deliver real-world impact through applied AIboosting productivity, fueling innovation, and making powerful AI tools part of every engineers workflow. Guided by our visionengineering redefined through smarter workflows, faster execution, and greater creativitywere building systems that let technology amplify human potential. As an AI Engineer, youll be hands-on in designing, developing, and deploying AI capabilities that reshape how engineers work. Youll learn from experienced AI architects and senior engineers, gaining exposure to sophisticated system design and scaling patterns, while supplying your own technical depth to deliver robust, high-quality solutions. Youll also mentor junior peers and share practical insights gained through your wor
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        We are looking for an Engineering Manager (f/m/d) to lead a high-performing, remote-first API development team based in Europe who are driving Contentfuls REST and GraphQL APIs that enable customers to manage and deliver content at scale. We aim to help customers accelerate innovation, reduce operational complexity, and unlock new growth opportunities through a secure, performant, and extensible API ecosystem. * Lead and grow a globally-distributed API development team, ensuring a culture of high performance, collaboration, and continuous improvement. * Experience with API-first platforms.
        We are looking for an Engineering Manager (f/m/d) to lead a high-performing, remote-first API development team based in Europe who are driving Contentfuls REST and GraphQL APIs that enable customers to manage and deliver content at scale. We aim to help customers accelerate innovation, reduce operational complexity, and unlock new growth opportunities through a secure, performant, and extensible API ecosystem. * Lead and grow a globally-distributed API development team, ensuring a culture of high performance, collaboration, and continuous improvement. * Experience with API-first platforms.
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        The successful applicant will have comprehensive expertise in Microsoft Azure services, Web API, Azure App Service, .NET Core, and Visual Studio. * Design and implement scalable cloud solutions utilizing Azure App Service, Web API, and .NET Core. * Define architecture patterns for microservices, API management, and integration with enterprise systems. * Utilize Azure Functions, Azure Logic Apps, Azure API Management, and Azure Storage to develop robust applications. * Expertise in Microsoft Azure services, including App Service, Functions, API Management, Storage, and Networking. * Strong knowledge of .NET Core, Web API, C#, and Visual Studio.
        The successful applicant will have comprehensive expertise in Microsoft Azure services, Web API, Azure App Service, .NET Core, and Visual Studio. * Design and implement scalable cloud solutions utilizing Azure App Service, Web API, and .NET Core. * Define architecture patterns for microservices, API management, and integration with enterprise systems. * Utilize Azure Functions, Azure Logic Apps, Azure API Management, and Azure Storage to develop robust applications. * Expertise in Microsoft Azure services, including App Service, Functions, API Management, Storage, and Networking. * Strong knowledge of .NET Core, Web API, C#, and Visual Studio.
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        What is the average salary for API in Essex?

        Average salary per year
        £47,499

        The average salary for a API in Essex is £47,499. API in Essex salaries range from £37,499 to £47,499.

        Frequently Asked Questions

        How many permanent API jobs are there in Essex?
        There are 121 permanent API jobs within 20 miles of Essex available on CWJobs right now.

        Where in Essex are these permanent jobs?
        You can find permanent jobs in Loughton, Saffron Walden, Billericay.

        What other similar jobs are there to permanent API jobs in Essex?
        As well as permanent API jobs in Essex, you can find permanent Qa Automation, QA Analyst, Site Reliability Engineer, amongst many others.