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12 Permanent API jobs in Business Venture (MK11) + 20 miles
197 exact matches jobs are outside your preferred location
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Want to use your full stack skills to help stop real-world cyber attacks? This is your chance to join a fast-growing, VC-backed cybersecurity innovator, recognised by Gartner and trusted by Fortune 500s and critical infrastructure providers worldwide. Theyre building cutting-edge technology that helps organisations continuously understand how they could be compromised and theyre scaling fast. Now, theyre looking for a Senior Full Stack Engineer to join their Client Facing Applications (CFA) team, where youll help shape the customer experience for some of the worlds largest enterprises. * Designing and developing enterprise-grade SaaS features across backend and frontend systems * Building secure, scalable, and high-performing APIs and services (NestJS, GraphQL, REST) * Creating data-driven dashboards and UIs with React, Next.js, and Chakra UI
Want to use your full stack skills to help stop real-world cyber attacks? This is your chance to join a fast-growing, VC-backed cybersecurity innovator, recognised by Gartner and trusted by Fortune 500s and critical infrastructure providers worldwide. Theyre building cutting-edge technology that helps organisations continuously understand how they could be compromised and theyre scaling fast. Now, theyre looking for a Senior Full Stack Engineer to join their Client Facing Applications (CFA) team, where youll help shape the customer experience for some of the worlds largest enterprises. * Designing and developing enterprise-grade SaaS features across backend and frontend systems * Building secure, scalable, and high-performing APIs and services (NestJS, GraphQL, REST) * Creating data-driven dashboards and UIs with React, Next.js, and Chakra UI
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Espire Infolabs is hiring for Front End Developer(React.js) for London, UK location. Role :Front End Developer(React.js) Location: London, UK(3 Days/Week onsite) Desired Industry Experience:5+ years - Relevant Experience:React. Js, Typescript, Azure - Proven experience as a Front-End Developer with a focus on React.js, and Typescript. Familiarity with C# and .Net. Strong proficiency in JavaScript, ES6/ES7, and related front-end technologies. Familiarity with state management libraries such as Redux. Experience with version control systems, such as Git. Experience with the Web Content Accessibility Guidelines. Knowledge of responsive web design principles and CSS frameworks. Understanding of RESTful APIs and asynchronous data retrieval. Experience with unit testing. Strong problem-solving and debugging skills. Excellent teamwork and communication skills.
Espire Infolabs is hiring for Front End Developer(React.js) for London, UK location. Role :Front End Developer(React.js) Location: London, UK(3 Days/Week onsite) Desired Industry Experience:5+ years - Relevant Experience:React. Js, Typescript, Azure - Proven experience as a Front-End Developer with a focus on React.js, and Typescript. Familiarity with C# and .Net. Strong proficiency in JavaScript, ES6/ES7, and related front-end technologies. Familiarity with state management libraries such as Redux. Experience with version control systems, such as Git. Experience with the Web Content Accessibility Guidelines. Knowledge of responsive web design principles and CSS frameworks. Understanding of RESTful APIs and asynchronous data retrieval. Experience with unit testing. Strong problem-solving and debugging skills. Excellent teamwork and communication skills.
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Senior Backend Software Engineer (Python)
Senior Backend Software Engineer (Python)
Plexus Resource Solutions Ltd
EC1A, City of London
From £90,000 to £120,000 per annum
Web3 - London, England £90-£120K - Plexus are working with a company that are building the future of gaming by introducing equitable ownership and compensation models powered by blockchain. Through our suite of Web3 games and DAO-driven products, we create opportunities for players worldwide to share in the value they help create. As a Senior Backend Engineer, youll play a key role in shaping the infrastructure behind Web3 products. From crafting Python-based APIs to building seamless blockchain integrations, youll help power a platform that brings decentralized ownership to the next generation of gaming - Responsibilities * Architect and develop backend systems to power Web3 applications * Build and deploy RESTful APIs using Python * Connect backend services with Web3 protocols, blockchains, DAOs, and smart contracts - What we're looking for
Web3 - London, England £90-£120K - Plexus are working with a company that are building the future of gaming by introducing equitable ownership and compensation models powered by blockchain. Through our suite of Web3 games and DAO-driven products, we create opportunities for players worldwide to share in the value they help create. As a Senior Backend Engineer, youll play a key role in shaping the infrastructure behind Web3 products. From crafting Python-based APIs to building seamless blockchain integrations, youll help power a platform that brings decentralized ownership to the next generation of gaming - Responsibilities * Architect and develop backend systems to power Web3 applications * Build and deploy RESTful APIs using Python * Connect backend services with Web3 protocols, blockchains, DAOs, and smart contracts - What we're looking for
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Backend Engineer Python
Backend Engineer Python
Plexus Resource Solutions Ltd
EC1, City of London
From £90,000 to £120,000 per annum
Backend Engineer - On-Chain Social Network - Remote £90k £120k - Plexus are working with an on-chain social network that empowers people to express themselves, connect with others, and explore the value of imagination. To support our growth and deliver a world-class experience, were looking for a Backend Engineer to join our core product team. Responsibilities * Work closely with the team to design, build, and deliver new product features * Develop and maintain the APIs that power our platform * Contribute to system reliability by taking part in our on-call rotation - Requirements * Solid experience with Python, GraphQL, and MongoDB * Flexibility to move across the stack when needed * Hands-on experience in blockchain development * Strong product intuition with a focus on user experience - Benefits * Competitive salary * Top-quality medical, dental & vision insurance
Backend Engineer - On-Chain Social Network - Remote £90k £120k - Plexus are working with an on-chain social network that empowers people to express themselves, connect with others, and explore the value of imagination. To support our growth and deliver a world-class experience, were looking for a Backend Engineer to join our core product team. Responsibilities * Work closely with the team to design, build, and deliver new product features * Develop and maintain the APIs that power our platform * Contribute to system reliability by taking part in our on-call rotation - Requirements * Solid experience with Python, GraphQL, and MongoDB * Flexibility to move across the stack when needed * Hands-on experience in blockchain development * Strong product intuition with a focus on user experience - Benefits * Competitive salary * Top-quality medical, dental & vision insurance
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ABAP Developer - Break out of the SAP Box
ABAP Developer - Break out of the SAP Box
LJ Recruitment Limited
EC1, City of London
£50000 - £75000 per annum
ABAP Developer ? AI / Startup Role?? Most ABAP roles keep you maintaining the same old codebase. This one lets you take your SAP expertise and plug it straight into a modern AI platform that's transforming how global enterprises run their tech. This London startup is tackling a multi-billion-dollar problem: helping the world's biggest companies turn ERP chaos into clarity. Their AI engine saves millions in IT costs, accelerates project timelines by months, and modernises decades-old systems in ways that have never been done before. This is a role for those who live and breathe tech. Hours run 9am-7pm, and the expectation is clear: hard work and full commitment are what make the difference here. What you'll do * Write and optimise ABAP while shaping how AI agents interpret SAP. * Go beyond SAP, contribute to backend services, APIs, and infrastructure.
ABAP Developer ? AI / Startup Role?? Most ABAP roles keep you maintaining the same old codebase. This one lets you take your SAP expertise and plug it straight into a modern AI platform that's transforming how global enterprises run their tech. This London startup is tackling a multi-billion-dollar problem: helping the world's biggest companies turn ERP chaos into clarity. Their AI engine saves millions in IT costs, accelerates project timelines by months, and modernises decades-old systems in ways that have never been done before. This is a role for those who live and breathe tech. Hours run 9am-7pm, and the expectation is clear: hard work and full commitment are what make the difference here. What you'll do * Write and optimise ABAP while shaping how AI agents interpret SAP. * Go beyond SAP, contribute to backend services, APIs, and infrastructure.
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Embedded Software Manager
Embedded Software Manager
Synergetic Recruitment Group Limited
CB22, Cambridge
From £85,000 to £115,000 per annum
Senior Embedded A/V Manager - Location: Cambridge, UK (4 days a week onsite) Employment Type: Full-time, Permanent - An industry leading global technology company in the digital media and embedded systems space is seeking an experienced Senior Embedded A/V Manager to join its growing engineering team. This is a hands-on leadership role within a highly skilled group working on cutting-edge embedded products used worldwide across multiple sectors. The company designs and manufactures its own hardware, delivering robust, high-performance embedded media solutions that support a wide range of video, audio, and HTML rendering capabilities. * Manage a team of up to 10 embedded software developers working in C and C++ across the companys A/V stack and adjacent areas. * Oversee development and maintenance of embedded system software for high-definition video and complex audio.
Senior Embedded A/V Manager - Location: Cambridge, UK (4 days a week onsite) Employment Type: Full-time, Permanent - An industry leading global technology company in the digital media and embedded systems space is seeking an experienced Senior Embedded A/V Manager to join its growing engineering team. This is a hands-on leadership role within a highly skilled group working on cutting-edge embedded products used worldwide across multiple sectors. The company designs and manufactures its own hardware, delivering robust, high-performance embedded media solutions that support a wide range of video, audio, and HTML rendering capabilities. * Manage a team of up to 10 embedded software developers working in C and C++ across the companys A/V stack and adjacent areas. * Oversee development and maintenance of embedded system software for high-definition video and complex audio.
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Our client, a well-known global brand, is seeking a Systems Analyst to join their IT Application Development Team based in London. This is a key role that will bridge the gap between business analysts and development teams, ensuring business requirements are translated into technically robust and user-focused solutions. * Collaborate with stakeholders to gather and analyse business requirements across internal systems. * Translate requirements into detailed backlog items and technical documentation. * Create wireframes, mock-ups, and prototypes using Figma to support development and stakeholder engagement. * Work closely with developers, testers, and product owners to enhance .NET-based systems and RESTful APIs. * Participate in Agile ceremonies including sprint planning, backlog grooming, and retrospectives. * Maintain documentation throughout the project lifecycle.
Our client, a well-known global brand, is seeking a Systems Analyst to join their IT Application Development Team based in London. This is a key role that will bridge the gap between business analysts and development teams, ensuring business requirements are translated into technically robust and user-focused solutions. * Collaborate with stakeholders to gather and analyse business requirements across internal systems. * Translate requirements into detailed backlog items and technical documentation. * Create wireframes, mock-ups, and prototypes using Figma to support development and stakeholder engagement. * Work closely with developers, testers, and product owners to enhance .NET-based systems and RESTful APIs. * Participate in Agile ceremonies including sprint planning, backlog grooming, and retrospectives. * Maintain documentation throughout the project lifecycle.
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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 a senior engineering team (5 growing to ~10 ) to design, build and run the Customer MDM platform as a durable product with clear ownership. * Own platform engineering: architecture, coding standards, quality, observabil
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 a senior engineering team (5 growing to ~10 ) to design, build and run the Customer MDM platform as a durable product with clear ownership. * Own platform engineering: architecture, coding standards, quality, observabil
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We're looking for an experienced Senior Application Support Engineer to join a growing IT team and play a key role in supporting critical business applications across a modern and complex technology stack. * Investigating and resolving technical incidents, ensuring minimal downtime and effective root cause analysis * Proactively maintaining and optimising applications, performing upgrades and configuration changes * Monitoring system performance, defining service-level objectives, and addressing bottlenecks before they impact users * Collaborating closely with engineering and business teams to drive operational excellence * Enhancing processes, documentation, and tooling to support continuous improvement * Proven experience in an application support or support engineering role, within financial services ideally, or another regulated environment
We're looking for an experienced Senior Application Support Engineer to join a growing IT team and play a key role in supporting critical business applications across a modern and complex technology stack. * Investigating and resolving technical incidents, ensuring minimal downtime and effective root cause analysis * Proactively maintaining and optimising applications, performing upgrades and configuration changes * Monitoring system performance, defining service-level objectives, and addressing bottlenecks before they impact users * Collaborating closely with engineering and business teams to drive operational excellence * Enhancing processes, documentation, and tooling to support continuous improvement * Proven experience in an application support or support engineering role, within financial services ideally, or another regulated environment
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Location: London - 1x a month - Salary: £95,000 - £120,000 + equity + benefits - An established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects from the ground up - architecting scalable, data-driven systems that empower venues to deliver seamless guest experiences and drive long-term innovation. What will I be doing? * Lead the technical vision and architectural direction across complex backend systems, ensuring scalability, reliability, and performance. * Partner closely with engineering leadership to define best practices, coding standards, and long-term technical strategy. * Design, develop, and oversee the delivery of robust, production-grade software built using Python, D
Location: London - 1x a month - Salary: £95,000 - £120,000 + equity + benefits - An established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects from the ground up - architecting scalable, data-driven systems that empower venues to deliver seamless guest experiences and drive long-term innovation. What will I be doing? * Lead the technical vision and architectural direction across complex backend systems, ensuring scalability, reliability, and performance. * Partner closely with engineering leadership to define best practices, coding standards, and long-term technical strategy. * Design, develop, and oversee the delivery of robust, production-grade software built using Python, D
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Principal Software Engineer - Frontend
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
Location: London 1x a month - Salary: £75,000 - £95,000 + equity + benefits - An established, global technology business within the hospitality-tech industry is seeking a talented Backend 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. What will I be doing? * Design, develop, test, and maintain high-performance backend systems supporting real-time hospitality operations. * Take ownership of key features throughout the software development lifecycle - from technical design through to deployment and ongoing optimisation. * Collaborate with cross-functional teams including product, design, and data science to deliver innovative, customer-focused solutions.
Location: London 1x a month - Salary: £75,000 - £95,000 + equity + benefits - An established, global technology business within the hospitality-tech industry is seeking a talented Backend 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. What will I be doing? * Design, develop, test, and maintain high-performance backend systems supporting real-time hospitality operations. * Take ownership of key features throughout the software development lifecycle - from technical design through to deployment and ongoing optimisation. * Collaborate with cross-functional teams including product, design, and data science to deliver innovative, customer-focused solutions.
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Salesforce Technical Lead London - Location: London (Hybrid) Salary: £85,000 per annum + benefits - Type: Permanent | Full-Time - Recruitment Partner: 167 Solutions Ltd - 167 Solutions Ltd is proud to be working in partnership with a forward-thinking organisation that is investing heavily in its digital transformation. We are seeking an experienced Salesforce Technical Lead to take ownership of the platforms technical direction and play a key role in delivering enterprise-grade Salesforce solutions. This is a hands-on leadership role ideal for someone who enjoys both solution architecture and technical delivery, and wants to shape a scalable Salesforce ecosystem within a growing organisation. Key Responsibilities * Lead the technical design, development and implementation of Salesforce solutions. * Translate business requirements into robust and scalable technical arc
Salesforce Technical Lead London - Location: London (Hybrid) Salary: £85,000 per annum + benefits - Type: Permanent | Full-Time - Recruitment Partner: 167 Solutions Ltd - 167 Solutions Ltd is proud to be working in partnership with a forward-thinking organisation that is investing heavily in its digital transformation. We are seeking an experienced Salesforce Technical Lead to take ownership of the platforms technical direction and play a key role in delivering enterprise-grade Salesforce solutions. This is a hands-on leadership role ideal for someone who enjoys both solution architecture and technical delivery, and wants to shape a scalable Salesforce ecosystem within a growing organisation. Key Responsibilities * Lead the technical design, development and implementation of Salesforce solutions. * Translate business requirements into robust and scalable technical arc
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Permanent | Fully Remote (UK) £65,000 - £80,000 + bonus - Key Skills: SQL (T-SQL or PL/SQL) * Unit4 ERP Datasets / Data Dictionary * REST & SOAP Web Services * PowerShell * RERX / ARC / Xtra Reporting - About the Role - We're seeking a technically focused Unit4 Lead Consultant to take ownership of complex solution design, development, and delivery for a leading IT consultancy. This role is hands-on-ideal for someone who thrives on solving technical challenges, building integrations, and optimising data-driven solutions within Unit4 ERP. You'll play a key role in defining technical strategy, developing custom extensions, reports, and integrations, and ensuring solutions are robust, scalable, and high performing. You'll also provide technical direction and guidance to a small team, ensuring best practices and knowledge sharing across projects. What You'll Do
Permanent | Fully Remote (UK) £65,000 - £80,000 + bonus - Key Skills: SQL (T-SQL or PL/SQL) * Unit4 ERP Datasets / Data Dictionary * REST & SOAP Web Services * PowerShell * RERX / ARC / Xtra Reporting - About the Role - We're seeking a technically focused Unit4 Lead Consultant to take ownership of complex solution design, development, and delivery for a leading IT consultancy. This role is hands-on-ideal for someone who thrives on solving technical challenges, building integrations, and optimising data-driven solutions within Unit4 ERP. You'll play a key role in defining technical strategy, developing custom extensions, reports, and integrations, and ensuring solutions are robust, scalable, and high performing. You'll also provide technical direction and guidance to a small team, ensuring best practices and knowledge sharing across projects. What You'll Do
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Senior C# Developer - Finance
Senior C# Developer - Finance
Client Server
The City, EC4
£100000 - £150000 per annum + bonus + benefits
There's a focus on C# .Net backend and API development although you'll also have elements of front end work with JavaScript and React.js.
There's a focus on C# .Net backend and API development although you'll also have elements of front end work with JavaScript and React.js.
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Deep Azure expertise, with M365 ecosystem governance: Power Platform, E5 optimisation, Azure integration services such as Logic Apps, Service Bus, Event Grid, API Management).
Deep Azure expertise, with M365 ecosystem governance: Power Platform, E5 optimisation, Azure integration services such as Logic Apps, Service Bus, Event Grid, API Management).
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Experience with Java and API testing using Postman.
Experience with Java and API testing using Postman.
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RESTful API development
RESTful API development
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Experience with some of the technologies we make use of: Groovy, Python, AWS Serverless (API Gateway, Lambdas), XML, JSON, Open API, virtualisation in general and especially Docker and its eco system, Git, NoSQL products and concepts (Dynamo, column family, etc.)
Experience with some of the technologies we make use of: Groovy, Python, AWS Serverless (API Gateway, Lambdas), XML, JSON, Open API, virtualisation in general and especially Docker and its eco system, Git, NoSQL products and concepts (Dynamo, column family, etc.)
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Software Developer - C# .NetCore, TypeScript
Software Developer - C# .NetCore, TypeScript
Coburg Banks Limited
Birmingham Business Park, B37
£45000 - £50000 per annum + Pension, Healthcare
REST API's are used through the system as the methodology to interact with third party integrations which are key with the system.
REST API's are used through the system as the methodology to interact with third party integrations which are key with the system.
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Software Developer - C# .NetCore, TypeScript
Software Developer - C# .NetCore, TypeScript
Coburg Banks Limited
Birmingham Business Park, B37
£50000 - £60000 per annum + Pension, Healthcare
REST API's are used through the system as the methodology to interact with third party integrations which are key with the system.
REST API's are used through the system as the methodology to interact with third party integrations which are key with the system.
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Software Developer - C# .NetCore, Angular
Software Developer - C# .NetCore, Angular
Coburg Banks Limited
Birmingham Business Park, B37
£45000 - £50000 per annum + Pension, Healthcare
REST API's are used through the system as the methodology to interact with third party integrations which are key with the system.
REST API's are used through the system as the methodology to interact with third party integrations which are key with the system.
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Contribute to backend/API testing and assist with security testing initiatives * Strong knowledge of API testing and backend system validation
Contribute to backend/API testing and assist with security testing initiatives * Strong knowledge of API testing and backend system validation
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Proficiency in API testing (Postman or equivalent) and SQL for data validation.
Proficiency in API testing (Postman or equivalent) and SQL for data validation.
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Build, fine-tune, and evaluate LLM-based Q&A models using frameworks like AWS Bedrock, Langchain, HuggingFace Transformers or OpenAI API.
Build, fine-tune, and evaluate LLM-based Q&A models using frameworks like AWS Bedrock, Langchain, HuggingFace Transformers or OpenAI API.
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- The City, City (EC3)
- Southwark
- Birmingham Business Park
- The City, City (EC4)
- Euston
- Mayfair
- Milton
- Raunds
- Shoreditch
- Thames View Industrial Park
- City of London
- South East London
- Birmingham
- Cambridge
- Northampton
- South West London
- Milton Keynes
- Central London
- West End
- Abingdon
- London
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- Oxfordshire
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