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- Shadwell
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- The City, City (EC3)
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- Gilwell Park
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- Soho
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27 Permanent API jobs in Addlestone + 20 miles
158 exact matches jobs are outside your preferred location
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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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Trafalgar Talent is recruiting for a progressive, subscription-based tech company thats enhancing how users interact with web platforms through secure, high-performance solutions. As a Senior React Developer, you'll be pivotal in architecting, building, and optimizing advanced web applications using React and TypeScript. You'll take on complex engineering challenges, influence architectural decisions, and contribute directly to the user experience. * Designing and implementing scalable front-end solutions using React, TypeScript, and modern tooling (e.g. Redux, Webpack, Jest). * Breaking down complex, ambiguous problems into clean, testable components. * Performance tuningboost UI responsiveness, decrease load times, and streamline data management. * Selecting and integrating third-party tools and libraries wisely, balancing trade-offs effectively.
Trafalgar Talent is recruiting for a progressive, subscription-based tech company thats enhancing how users interact with web platforms through secure, high-performance solutions. As a Senior React Developer, you'll be pivotal in architecting, building, and optimizing advanced web applications using React and TypeScript. You'll take on complex engineering challenges, influence architectural decisions, and contribute directly to the user experience. * Designing and implementing scalable front-end solutions using React, TypeScript, and modern tooling (e.g. Redux, Webpack, Jest). * Breaking down complex, ambiguous problems into clean, testable components. * Performance tuningboost UI responsiveness, decrease load times, and streamline data management. * Selecting and integrating third-party tools and libraries wisely, balancing trade-offs effectively.
Mid-Level Mobile Developer (iOS) Brighton, 4 days per week in office, £50,000£70,000 DOE - Mid-Level iOS Developer required by a Brighton based Software House. This is a new role which would be perfect for someone looking to build polished, high-performing mobile apps while working in a collaborative, creative environment. * Designing, building, and maintaining iOS applications in Swift * Creating clean, modern UIs with SwiftUI * Applying SOLID principles to write scalable, maintainable code * Working with RESTful APIs to integrate app functionality * Ensuring apps perform smoothly through memory management, multi-threading, and performance optimisation * Collaborating with cross-functional teams on exciting projects * Nice to have: experience with Android development (Kotlin) Our client offers a vibrant office culture and you will have the opportunity to work on dive
Mid-Level Mobile Developer (iOS) Brighton, 4 days per week in office, £50,000£70,000 DOE - Mid-Level iOS Developer required by a Brighton based Software House. This is a new role which would be perfect for someone looking to build polished, high-performing mobile apps while working in a collaborative, creative environment. * Designing, building, and maintaining iOS applications in Swift * Creating clean, modern UIs with SwiftUI * Applying SOLID principles to write scalable, maintainable code * Working with RESTful APIs to integrate app functionality * Ensuring apps perform smoothly through memory management, multi-threading, and performance optimisation * Collaborating with cross-functional teams on exciting projects * Nice to have: experience with Android development (Kotlin) Our client offers a vibrant office culture and you will have the opportunity to work on dive
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Principal Software Engineer
Principal Software Engineer
Rise Technical Recruitment Limited
London
£100000 - £115000.00 per annum + Progression + Training + Pension
London (Office Based) £100,000 - £115,000 + Progression + Training - An excellent opportunity awaits an experienced software engineer with strong Java and Python skills for a hands-on technical leadership position within an innovative ML-driven SaaS firm, in a role offering technical growth, variety and strong development opportunities. The company is a profitable and renowned business delivering a cutting-edge AI-driven platform that helps optimise business processes in heavy industries. In this role, you will take on a hands-on technical leadership position focused on the full stack development and management of the platform. You'll manage solution architecture and APIs, data engineering, and the performance of AWS cloud services. As a technical authority within the team, you will provide technical guidance and mentorship to more junior members of the development te
London (Office Based) £100,000 - £115,000 + Progression + Training - An excellent opportunity awaits an experienced software engineer with strong Java and Python skills for a hands-on technical leadership position within an innovative ML-driven SaaS firm, in a role offering technical growth, variety and strong development opportunities. The company is a profitable and renowned business delivering a cutting-edge AI-driven platform that helps optimise business processes in heavy industries. In this role, you will take on a hands-on technical leadership position focused on the full stack development and management of the platform. You'll manage solution architecture and APIs, data engineering, and the performance of AWS cloud services. As a technical authority within the team, you will provide technical guidance and mentorship to more junior members of the development te
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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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Lead Performance Test Engineer
Lead Performance Test Engineer
Spectrum It Recruitment Limited
SO50, Eastleigh
£60000 - £65000.00 per annum
Practical skills in C#, Web API testing, Azure and modern test methodologies
Practical skills in C#, Web API testing, Azure and modern test methodologies
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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).
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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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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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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Data Engineer II
Data Engineer II
LEXISNEXIS RISK SOLUTIONS UK LIMITED T/a LexisNexis Risk Solutions Group
London
Competitive
Would you like to ensure the successful delivery of the Data Platform and Software Innovations? Do you enjoy creating a collaborative and customer-focused working environment? LexisNexis Intellectual Property, which serves customers in more than 150 countries with 11,300 employees worldwide, is part of RELX, a global provider of information-based analytics and decision tools for professional and business customers. As a Data Engineer at LexisNexis Intellectual Property (LNIP), youll contribute to building and maintaining our next-generation Strategic Data Platform. This platform ingests, enriches, and transforms global patent and IP-related data to power key products like PatentSight+, as well as a growing ecosystem of internal tools and customer-facing solutions. In this early-career role, you will collaborate with senior engineers and technical leads to design robus
Would you like to ensure the successful delivery of the Data Platform and Software Innovations? Do you enjoy creating a collaborative and customer-focused working environment? LexisNexis Intellectual Property, which serves customers in more than 150 countries with 11,300 employees worldwide, is part of RELX, a global provider of information-based analytics and decision tools for professional and business customers. As a Data Engineer at LexisNexis Intellectual Property (LNIP), youll contribute to building and maintaining our next-generation Strategic Data Platform. This platform ingests, enriches, and transforms global patent and IP-related data to power key products like PatentSight+, as well as a growing ecosystem of internal tools and customer-facing solutions. In this early-career role, you will collaborate with senior engineers and technical leads to design robus
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Familiarity with REST API testing using tools like Postman.
Familiarity with REST API testing using tools like Postman.
Leverage knowledge of data analysis, API documentation and payment processing manage, coach, and develop a team of hybrid L1 and L2 associates
Leverage knowledge of data analysis, API documentation and payment processing manage, coach, and develop a team of hybrid L1 and L2 associates
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We are looking for an ambitious, warm and inquisitive individual to join our Development team as a Quadient Inspire Developer for variable omni-channel communications. You will be reporting directly to the Head of Development. Ability to install/setup/maintain and develop Inspire Interactive. 1. Advanced in Inspire Designer - 2. Advanced in Inspire Designer Scripting - 3. Highly knowledgeable in Inspire Interactive - 4. Advanced in Inspire Scaler or Inspire Automation ( Scaler preferable but plenty of crossover and transferable skills from automation) 5. Able to create and setup new tenants / companies in Interactive - 6. Confident in creating and managing base templates within Interactive - 7. Confident in creating and managing templates within Interactive - 8. Confident in managing approval processes (an Interactive approval process) including adding basic forms to
We are looking for an ambitious, warm and inquisitive individual to join our Development team as a Quadient Inspire Developer for variable omni-channel communications. You will be reporting directly to the Head of Development. Ability to install/setup/maintain and develop Inspire Interactive. 1. Advanced in Inspire Designer - 2. Advanced in Inspire Designer Scripting - 3. Highly knowledgeable in Inspire Interactive - 4. Advanced in Inspire Scaler or Inspire Automation ( Scaler preferable but plenty of crossover and transferable skills from automation) 5. Able to create and setup new tenants / companies in Interactive - 6. Confident in creating and managing base templates within Interactive - 7. Confident in creating and managing templates within Interactive - 8. Confident in managing approval processes (an Interactive approval process) including adding basic forms to
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Related Jobs
Locations
- Shadwell
- The City, City (EC2)
- The City, City (EC3)
- The City, City (EC4)
- Gilwell Park
- Holloway
- Pimlico
- Shoreditch
- Soho
- South Kensington
- City of London
- Central London
- West End
- East London
- North West London
- Reading
- South West London
- Southampton
- West London
- Fareham
- London
- Hampshire
- Berkshire
- Buckinghamshire
- East Sussex
- Hertfordshire
- Oxfordshire
- Surrey
- West Sussex
- South East