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- Shadwell
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- Pimlico
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24 Permanent API jobs in West Byfleet + 20 miles
155 exact matches jobs are outside your preferred location
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Halian Technology are searching for aLead Android Engineerto join our clients forward-thinking mobile team. Our client isone of the UKs most trusted and innovative omni-channel retailers, where technology and customer experience go hand in hand. If youre passionate about delivering high-quality mobile experiences and want to work with modern tools, great people, and at a company where learning and development are core valuesthis is the role for you. * Influence architecture and development strategy within a high-performing Agile squad. * Provide technical assurance and guidance across complex, high-impact projects. * Collaborate cross-functionally with iOS Engineers, BAs, QAs, Designers, and UX Specialists. * Champion Android best practices including Accessibility, CI/CD, TDD, and clean architecture.
Halian Technology are searching for aLead Android Engineerto join our clients forward-thinking mobile team. Our client isone of the UKs most trusted and innovative omni-channel retailers, where technology and customer experience go hand in hand. If youre passionate about delivering high-quality mobile experiences and want to work with modern tools, great people, and at a company where learning and development are core valuesthis is the role for you. * Influence architecture and development strategy within a high-performing Agile squad. * Provide technical assurance and guidance across complex, high-impact projects. * Collaborate cross-functionally with iOS Engineers, BAs, QAs, Designers, and UX Specialists. * Champion Android best practices including Accessibility, CI/CD, TDD, and clean architecture.
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About The Role - Job level:11 - Were growing our team! Were looking forPrincipal Solution Architectswho will serve as key leaders on client-facing projects. This role involves guiding clients and development teams through complex digital product development and technology implementations. You will work closely with clients and internal teams to understand context, co-design solutions, and lead technical teams through product development. In this role, you will be accountable for running projects, leading architecture work across some of our most complex and high-impact client programmes. You will design and oversee end-to-end technology solutions that are scalable, secure, user-centred, and ethically responsible. This role involves translating business needs into technology solutions, creating architecture artifacts, and supporting clients to make sustainable and user
About The Role - Job level:11 - Were growing our team! Were looking forPrincipal Solution Architectswho will serve as key leaders on client-facing projects. This role involves guiding clients and development teams through complex digital product development and technology implementations. You will work closely with clients and internal teams to understand context, co-design solutions, and lead technical teams through product development. In this role, you will be accountable for running projects, leading architecture work across some of our most complex and high-impact client programmes. You will design and oversee end-to-end technology solutions that are scalable, secure, user-centred, and ethically responsible. This role involves translating business needs into technology solutions, creating architecture artifacts, and supporting clients to make sustainable and user
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About The Role - Job level:11 - Were growing our team! Were looking forPrincipal Solution Architectswho will serve as key leaders on client-facing projects. This role involves guiding clients and development teams through complex digital product development and technology implementations. You will work closely with clients and internal teams to understand context, co-design solutions, and lead technical teams through product development. In this role, you will be accountable for running projects, leading architecture work across some of our most complex and high-impact client programmes. You will design and oversee end-to-end technology solutions that are scalable, secure, user-centred, and ethically responsible. This role involves translating business needs into technology solutions, creating architecture artifacts, and supporting clients to make sustainable and user
About The Role - Job level:11 - Were growing our team! Were looking forPrincipal Solution Architectswho will serve as key leaders on client-facing projects. This role involves guiding clients and development teams through complex digital product development and technology implementations. You will work closely with clients and internal teams to understand context, co-design solutions, and lead technical teams through product development. In this role, you will be accountable for running projects, leading architecture work across some of our most complex and high-impact client programmes. You will design and oversee end-to-end technology solutions that are scalable, secure, user-centred, and ethically responsible. This role involves translating business needs into technology solutions, creating architecture artifacts, and supporting clients to make sustainable and user
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Junior / Mid Level Full Stack Developer - Location: Fareham, Hampshire (on-site) Salary: Up to £55,000 (some flexibility for strong candidates) Start Date: ASAP - Type: Permanent, Full-Time - About The Company - We're working with an exciting, mission-driven startup that's building cutting-edge tech for pet owners across North America, Europe, and Australia. Backed by strong investment and led by a seasoned team, they're scaling fast and looking for talented developers to join their journey. Their culture is collaborative, transparent, and growth-focused-perfect for someone early in their career who's looking to make a real impact and learn in a supportive environment. The Role - This is a fantastic opportunity for a Junior Full Stack Developer (or early mid-level) to join a growing team and play a hands-on role in shaping a Django-powered web and desktop application.
Junior / Mid Level Full Stack Developer - Location: Fareham, Hampshire (on-site) Salary: Up to £55,000 (some flexibility for strong candidates) Start Date: ASAP - Type: Permanent, Full-Time - About The Company - We're working with an exciting, mission-driven startup that's building cutting-edge tech for pet owners across North America, Europe, and Australia. Backed by strong investment and led by a seasoned team, they're scaling fast and looking for talented developers to join their journey. Their culture is collaborative, transparent, and growth-focused-perfect for someone early in their career who's looking to make a real impact and learn in a supportive environment. The Role - This is a fantastic opportunity for a Junior Full Stack Developer (or early mid-level) to join a growing team and play a hands-on role in shaping a Django-powered web and desktop application.
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Junior or Mid Level Developer (Flutter)- Fareham or Hybrid- up to £55k + Benefits - Our client a tech incubator who are revolutionising technology in their space are looking to hire a Junior Flutter Developer to join their team to help them deliver some exciting new products in 2025. The team are still fairly early in their journey and currently a small team of 5 but they will look to double the size of the team next year. The business are part of a much larger technology solutions brand that have been hugely successful. I am looking for someone either at Junior/Graduate level or with a few years of experience * Some experience building mobile apps with Flutter and Dart * Know how to deploy apps to iOS and Android (projects from uni or personal work are fine) * Can build clean, responsive UIs using Flutter widgets
Junior or Mid Level Developer (Flutter)- Fareham or Hybrid- up to £55k + Benefits - Our client a tech incubator who are revolutionising technology in their space are looking to hire a Junior Flutter Developer to join their team to help them deliver some exciting new products in 2025. The team are still fairly early in their journey and currently a small team of 5 but they will look to double the size of the team next year. The business are part of a much larger technology solutions brand that have been hugely successful. I am looking for someone either at Junior/Graduate level or with a few years of experience * Some experience building mobile apps with Flutter and Dart * Know how to deploy apps to iOS and Android (projects from uni or personal work are fine) * Can build clean, responsive UIs using Flutter widgets
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About The Role - We are looking for a skilled and versatile Salesforce Administrator and Developer to join our team. This hybrid role is crucial for both the day-to-day maintenance and long-term strategic enhancement of our Salesforce platform. The ideal candidate will be an expert in both declarative and programmatic solutions, ensuring our Salesforce instance is efficient, scalable, and tailored to our business needs. You will work within the Business Platform Team and be responsible for implementing our brand new Salesforce platform into the heart of our business. This will be a demanding role which will require prioritising the backlog of work against business goals. You will need to influence senior business domain experts with support from colleagues within the Business Platform Team. You will be responsible for day-to-day administration of the platform, as well
About The Role - We are looking for a skilled and versatile Salesforce Administrator and Developer to join our team. This hybrid role is crucial for both the day-to-day maintenance and long-term strategic enhancement of our Salesforce platform. The ideal candidate will be an expert in both declarative and programmatic solutions, ensuring our Salesforce instance is efficient, scalable, and tailored to our business needs. You will work within the Business Platform Team and be responsible for implementing our brand new Salesforce platform into the heart of our business. This will be a demanding role which will require prioritising the backlog of work against business goals. You will need to influence senior business domain experts with support from colleagues within the Business Platform Team. You will be responsible for day-to-day administration of the platform, as well
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About The Role - We are looking for a skilled and versatile Salesforce Administrator and Developer to join our team. This hybrid role is crucial for both the day-to-day maintenance and long-term strategic enhancement of our Salesforce platform. The ideal candidate will be an expert in both declarative and programmatic solutions, ensuring our Salesforce instance is efficient, scalable, and tailored to our business needs. You will work within the Business Platform Team and be responsible for implementing our brand new Salesforce platform into the heart of our business. This will be a demanding role which will require prioritising the backlog of work against business goals. You will need to influence senior business domain experts with support from colleagues within the Business Platform Team. You will be responsible for day-to-day administration of the platform, as well
About The Role - We are looking for a skilled and versatile Salesforce Administrator and Developer to join our team. This hybrid role is crucial for both the day-to-day maintenance and long-term strategic enhancement of our Salesforce platform. The ideal candidate will be an expert in both declarative and programmatic solutions, ensuring our Salesforce instance is efficient, scalable, and tailored to our business needs. You will work within the Business Platform Team and be responsible for implementing our brand new Salesforce platform into the heart of our business. This will be a demanding role which will require prioritising the backlog of work against business goals. You will need to influence senior business domain experts with support from colleagues within the Business Platform Team. You will be responsible for day-to-day administration of the platform, as well
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Full Stack Python Developer (AI,LLMs) - London (1 day a week)
Full Stack Python Developer (AI,LLMs) - London (1 day a week)
Transparent Technology
London
£35000 - £45000 per annum + bens, future equity
Junior Full Stack Python Developer - AI/LLMs - London (Hybrid, 1 day per week) - Up to £45k - Are you a Junior Full Stack Developer with a passion for Python, AI, and cutting-edge tech? This is your chance to join a brand-new, well-funded eCommerce start-up right at the beginning of its scale-up journey. Backed by recent investment and led by a proven entrepreneur with a track record of building successful businesses, this is a rare opportunity to play a pivotal role in shaping greenfield products that are the first of their kind. You'll work closely with the Founder and another experienced Developer, gaining hands-on experience with AI/LLMs, while building innovative products that will disrupt the market. * Strong foundation in Python * Experience with Node.js and React * Knowledge of cloud platforms (AWS or GCP) * Experience working with REST APIs
Junior Full Stack Python Developer - AI/LLMs - London (Hybrid, 1 day per week) - Up to £45k - Are you a Junior Full Stack Developer with a passion for Python, AI, and cutting-edge tech? This is your chance to join a brand-new, well-funded eCommerce start-up right at the beginning of its scale-up journey. Backed by recent investment and led by a proven entrepreneur with a track record of building successful businesses, this is a rare opportunity to play a pivotal role in shaping greenfield products that are the first of their kind. You'll work closely with the Founder and another experienced Developer, gaining hands-on experience with AI/LLMs, while building innovative products that will disrupt the market. * Strong foundation in Python * Experience with Node.js and React * Knowledge of cloud platforms (AWS or GCP) * Experience working with REST APIs
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Hays Software Engineering are looking for a Test Analyst to join a renowned London based Insurer with huge growth plans. What you will be doing:You will be part of a lean family type IT team responsible for all things tech operations and directly responsible for implementing a testing environment for electronic trading platforms. As well as the above, you will be responsible for liaising with internal stakeholders such as Actuarial, Underwriting and Finance professionals to ensure the smooth implementation of system updates. This specific client operates their IT team with 0 ego's. Therefore, there may be an element of mentoring newer members of the team and assisting where the business requires. What you'll receive in return:The opportunity to work for a people centric business that will allow you to own full trading platform implementations, from design to deploy, .
Hays Software Engineering are looking for a Test Analyst to join a renowned London based Insurer with huge growth plans. What you will be doing:You will be part of a lean family type IT team responsible for all things tech operations and directly responsible for implementing a testing environment for electronic trading platforms. As well as the above, you will be responsible for liaising with internal stakeholders such as Actuarial, Underwriting and Finance professionals to ensure the smooth implementation of system updates. This specific client operates their IT team with 0 ego's. Therefore, there may be an element of mentoring newer members of the team and assisting where the business requires. What you'll receive in return:The opportunity to work for a people centric business that will allow you to own full trading platform implementations, from design to deploy, .
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About the Company - You'll be joining a global leader in real estate services and technology solutions. Known for combining deep market expertise with cutting-edge innovation, this business is committed to modernising how property and investment decisions are made. You'll be part of a collaborative, forward-thinking environment that values creativity, accountability, and growth-where your contributions will directly shape the future of real estate technology. Role Responsibilities * Architect, build, and optimise scalable ETL pipelines for diverse datasets. * Onboard, document, and curate external datasets for internal use. * Perform data validation, forensic analysis, and troubleshooting. * Deliver high-quality, maintainable Python code and participate in peer reviews. * Collaborate with stakeholders and researchers to support analytics and product development.
About the Company - You'll be joining a global leader in real estate services and technology solutions. Known for combining deep market expertise with cutting-edge innovation, this business is committed to modernising how property and investment decisions are made. You'll be part of a collaborative, forward-thinking environment that values creativity, accountability, and growth-where your contributions will directly shape the future of real estate technology. Role Responsibilities * Architect, build, and optimise scalable ETL pipelines for diverse datasets. * Onboard, document, and curate external datasets for internal use. * Perform data validation, forensic analysis, and troubleshooting. * Deliver high-quality, maintainable Python code and participate in peer reviews. * Collaborate with stakeholders and researchers to support analytics and product development.
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Are you an experienced Salesforce Architect, looking to take on a challenging role, at a global, 500+ staff strong UK based Software product company? You’ll be keen to take on a key role within the Data Ops team & own all things Salesforce related, across the technical, data & stakeholder management piece. Working across the business in this highly visible role, not only is Salesforce used extensively, internally, but they are also major Salesforce partners & are embedded into the Salesforce Ecosystem. Mainly, you should be a technical expert in Salesforce but also have the functional soft skills to make sure that the architecture & business requirements are effectively translated into reality. Role title: Salesforce Architect. Senior Salesforce Developer. Location: Central London – but largely irrelevant as this role is 98% remote.
Are you an experienced Salesforce Architect, looking to take on a challenging role, at a global, 500+ staff strong UK based Software product company? You’ll be keen to take on a key role within the Data Ops team & own all things Salesforce related, across the technical, data & stakeholder management piece. Working across the business in this highly visible role, not only is Salesforce used extensively, internally, but they are also major Salesforce partners & are embedded into the Salesforce Ecosystem. Mainly, you should be a technical expert in Salesforce but also have the functional soft skills to make sure that the architecture & business requirements are effectively translated into reality. Role title: Salesforce Architect. Senior Salesforce Developer. Location: Central London – but largely irrelevant as this role is 98% remote.
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Are you an experienced Salesforce Architect (or potentially a Senior Developer), looking to take on a challenging role, at a global, 500 staff strong UK based Software product company? You’ll be keen to take on a key role within the Data Ops team & own all things Salesforce related, across the technical, data & stakeholder management piece. Working across the business in this highly visible role, not only is Salesforce used extensively, internally, but they are also major Salesforce partners & are embedded into the Salesforce Ecosystem. Mainly, you should be a technical expert in Salesforce but also have the functional soft skills to make sure that the architecture & business requirements are effectively translated into reality. Role title: Salesforce Architect. Senior Salesforce Developer. Location: Central London – but largely irrelevant as this role is 98% remote.
Are you an experienced Salesforce Architect (or potentially a Senior Developer), looking to take on a challenging role, at a global, 500 staff strong UK based Software product company? You’ll be keen to take on a key role within the Data Ops team & own all things Salesforce related, across the technical, data & stakeholder management piece. Working across the business in this highly visible role, not only is Salesforce used extensively, internally, but they are also major Salesforce partners & are embedded into the Salesforce Ecosystem. Mainly, you should be a technical expert in Salesforce but also have the functional soft skills to make sure that the architecture & business requirements are effectively translated into reality. Role title: Salesforce Architect. Senior Salesforce Developer. Location: Central London – but largely irrelevant as this role is 98% remote.
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Data Engineer (Defence)
Data Engineer (Defence)
Anson Mccade
SG1, Stevenage
GBP 45,000.00 - 55,000.00 per year;GBP 45,000.00 per year;GBP 55,000.0
£45,000 - 55,000 GBP - Onsite WORKING - Location: Stevenage, Cambridge, East of England - United Kingdom Type: Permanent - Data Engineer - Generative AI | Defence Technology - A leading international defence organisation is seeking an experienced Data Engineer with a focus on Generative AI to join their IM GenAI Delivery Office in the UK. You will play a pivotal role in designing, managing, and optimising datasets that support advanced defence systems and critical internal projects. * Develop and maintain robust, secure, and high-integrity datasets for internal defence applications. * Design and optimise data pipelines to ensure reliable, compliant, and scalable solutions. * Apply your expertise in Generative AI, NLP, and OCR to enhance and automate data processes. * Build ETL workflows, APIs, and other data integration solutions tailored for mission-critical environm
£45,000 - 55,000 GBP - Onsite WORKING - Location: Stevenage, Cambridge, East of England - United Kingdom Type: Permanent - Data Engineer - Generative AI | Defence Technology - A leading international defence organisation is seeking an experienced Data Engineer with a focus on Generative AI to join their IM GenAI Delivery Office in the UK. You will play a pivotal role in designing, managing, and optimising datasets that support advanced defence systems and critical internal projects. * Develop and maintain robust, secure, and high-integrity datasets for internal defence applications. * Design and optimise data pipelines to ensure reliable, compliant, and scalable solutions. * Apply your expertise in Generative AI, NLP, and OCR to enhance and automate data processes. * Build ETL workflows, APIs, and other data integration solutions tailored for mission-critical environm
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Are you passionate about turning great design into seamless user experiences? Do you thrive on building interfaces that are as functional as they are beautiful? Our client is looking for aFront-End Developerwho loves working at the intersection of design, technology, and usability. What Youll Do * Build responsive, accessible, and high-quality interfaces with modern frameworks (React, Vue, or Angular). * Bring UX best practices to life, ensuring every interaction feels natural and intuitive. * Contribute to design systems and component libraries that scale across products. * Partner with product managers, designers, and backend engineers to deliver delightful experiences. * Stay ahead of front-end trends, accessibility standards, and UX/UI innovations. What they're Looking For * 4+ yearsof experience in front-end development.
Are you passionate about turning great design into seamless user experiences? Do you thrive on building interfaces that are as functional as they are beautiful? Our client is looking for aFront-End Developerwho loves working at the intersection of design, technology, and usability. What Youll Do * Build responsive, accessible, and high-quality interfaces with modern frameworks (React, Vue, or Angular). * Bring UX best practices to life, ensuring every interaction feels natural and intuitive. * Contribute to design systems and component libraries that scale across products. * Partner with product managers, designers, and backend engineers to deliver delightful experiences. * Stay ahead of front-end trends, accessibility standards, and UX/UI innovations. What they're Looking For * 4+ yearsof experience in front-end development.
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Senior Software Engineer C# .Net - Asset Manager
Senior Software Engineer C# .Net - Asset Manager
Client Server
The City, EC4
£100000 - £150000 per annum + bonus + benefits
There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js.
There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js.
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Technical Architect, Azure
Technical Architect, Azure
ARC IT Recruitment Ltd
The City, EC3
Up to £95,000 per annum bonus + benefits
Azure, API, PaaS * In-depth knowledge of Azure cloud services (PaaS, Containers, AKS, Logic Apps, API Management, Service Bus, Event Grid).
Azure, API, PaaS * In-depth knowledge of Azure cloud services (PaaS, Containers, AKS, Logic Apps, API Management, Service Bus, Event Grid).
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Exposure to API testing (e.g. RestAssured, Postman)
Exposure to API testing (e.g. RestAssured, Postman)
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Experience with API design standards & integration patterns
Experience with API design standards & integration patterns
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Senior Security Engineer (PurView, Sentinel, Defender)
Senior Security Engineer (PurView, Sentinel, Defender)
Invitise Ltd
WC1A, Central London
Up to £70,000 per annum + Excellent Benefits
PowerShell scripting and use of Microsoft Graph API
PowerShell scripting and use of Microsoft Graph API
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Integration & API Testing - proficiency with REST/OData service testing using tools like Postman or SoapUI
Integration & API Testing - proficiency with REST/OData service testing using tools like Postman or SoapUI
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Youll play a key part in moving away from legacy components towards a clean, API-driven architecture.
Youll play a key part in moving away from legacy components towards a clean, API-driven architecture.
Contribute to backend/API testing and support security testing initiatives. * Strong knowledge of API testing and backend validation.
Contribute to backend/API testing and support security testing initiatives. * Strong knowledge of API testing and backend validation.
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Experience with API design and development for both internal and external use cases
Experience with API design and development for both internal and external use cases
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The ideal candidate will have a robust background in AWS, Node.js, and React, along with expertise in NoSQL databases, RESTful API design and development, product development, and deployment of applications on both iOS and Android platforms.
The ideal candidate will have a robust background in AWS, Node.js, and React, along with expertise in NoSQL databases, RESTful API design and development, product development, and deployment of applications on both iOS and Android platforms.
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Familiarity with REST API testing using tools like Postman.
Familiarity with REST API testing using tools like Postman.
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Related Jobs
Locations
- Shadwell
- The City, City (EC2)
- The City, City (EC3)
- Shoreditch
- The City, City (EC4)
- Charing Cross
- Gilwell Park
- Holloway
- Pimlico
- Soho
- City of London
- Central London
- West End
- East London
- North West London
- Reading
- Fareham
- South West London
- West London
- Guildford
- London
- Hampshire
- Berkshire
- Surrey
- Buckinghamshire
- Hertfordshire
- West Sussex
- East Sussex
- Oxfordshire
- South East