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- Moorgate
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136 API jobs in Pentonville + 20 miles
488 exact matches jobs are outside your preferred location
Thats why our clients financial institutions from fintechs and crypto platforms, to banks and credit unions use our API to power their banking infrastructure.
Thats why our clients financial institutions from fintechs and crypto platforms, to banks and credit unions use our API to power their banking infrastructure.
From day one, weve been a cloud-first platform with an open API architecture, leveraging structured data to transform how accountants work.
From day one, weve been a cloud-first platform with an open API architecture, leveraging structured data to transform how accountants work.
You'll lead the development of our platform domain, including capabilities like our form builder, API-driven onboarding, etc. These aren't just internal tools, they're the foundation that will reduce onboarding journey build time from days to minutes, enable true API-first product capabilities, and unlock our ability to scale across new markets and partner channels. Own the development of core platform systems including the form builder, API triggered journeys, and modular micro-frontend components. Write clear specifications that handle the complexity of authorisation systems, multi-tenant architectures, and API integrations whilst maintaining focus on real-world applications. Own the measures that define success for your platform capabilities, from build time reduction to API adoption rates. Familiarity with micro frontends, building systems, authorisation frameworks (e.g., Keycloak), ...
You'll lead the development of our platform domain, including capabilities like our form builder, API-driven onboarding, etc. These aren't just internal tools, they're the foundation that will reduce onboarding journey build time from days to minutes, enable true API-first product capabilities, and unlock our ability to scale across new markets and partner channels. Own the development of core platform systems including the form builder, API triggered journeys, and modular micro-frontend components. Write clear specifications that handle the complexity of authorisation systems, multi-tenant architectures, and API integrations whilst maintaining focus on real-world applications. Own the measures that define success for your platform capabilities, from build time reduction to API adoption rates. Familiarity with micro frontends, building systems, authorisation frameworks (e.g., Keycloak), ...
Deep expertise in one or more core architectural domains: Data Architecture, Cloud Platforms (AWS, Azure, or GCP), Microservices, or API-led architecture.
Deep expertise in one or more core architectural domains: Data Architecture, Cloud Platforms (AWS, Azure, or GCP), Microservices, or API-led architecture.
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Integration with SFTP, API-based connections, and secure channels
Integration with SFTP, API-based connections, and secure channels
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Integrate the productwith client Allegro installations, including API connectivity and database schema mapping * Experience with API testing
Integrate the productwith client Allegro installations, including API connectivity and database schema mapping * Experience with API testing
Hands-on Experience working with Business Rules, Client Scripts, UI Policies, UI Scripts, UI Actions, UI Pages, Script Includes, Access Control Lists, API's, Service Portal etc...
Hands-on Experience working with Business Rules, Client Scripts, UI Policies, UI Scripts, UI Actions, UI Pages, Script Includes, Access Control Lists, API's, Service Portal etc...
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Design scalable, maintainable, and secure automation frameworks for UI, API, performance, and end-to-end testing.
Design scalable, maintainable, and secure automation frameworks for UI, API, performance, and end-to-end testing.
PREMIUM
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Contract Opportunity – Technical Architect - 12 Month Contract
Contract Opportunity – Technical Architect - 12 Month Contract
Stealth IT Consulting Limited
UK
Up to £500 per day Up to £500 (Outside) per day
API Migration | Enterprise Platform Transition - Im supporting a major public-sector digital transformation programme and looking for an experienced Technical Architectto lead a large-scale API migration project. * Lead the architecture for a significant API migration programme - If youre an experienced Technical Architect with proven API migration experience and available for a long-term Outside IR35 engagement, Id be keen to speak with you.
API Migration | Enterprise Platform Transition - Im supporting a major public-sector digital transformation programme and looking for an experienced Technical Architectto lead a large-scale API migration project. * Lead the architecture for a significant API migration programme - If youre an experienced Technical Architect with proven API migration experience and available for a long-term Outside IR35 engagement, Id be keen to speak with you.
FEATURED
Experience with Gurobi Python API (gurobipy)
Experience with Gurobi Python API (gurobipy)
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Practical experience with Azure-based integration tooling, including Logic Apps, API Management, Service Bus, and Event Grid. * Good knowledge of common integration design approaches such as API-centric design, publish/subscribe, event-driven, synchronous, and batch processing patterns. * Awareness of modern security principles including token-based authentication, encryption in transit, and API security standards.
Practical experience with Azure-based integration tooling, including Logic Apps, API Management, Service Bus, and Event Grid. * Good knowledge of common integration design approaches such as API-centric design, publish/subscribe, event-driven, synchronous, and batch processing patterns. * Awareness of modern security principles including token-based authentication, encryption in transit, and API security standards.
PREMIUM
Experience with scripting (JavaScript, Glide API).
Experience with scripting (JavaScript, Glide API).
Magento, SQL, PHP, jQuery, JS, HTML, CSS, Rest/Soap/GraphQL API
Magento, SQL, PHP, jQuery, JS, HTML, CSS, Rest/Soap/GraphQL API
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Work closely with the other teams of the Lead to Order unit and collaborate with architecture and engineering teams to define scalable, API-driven and microservices-based solutions
Work closely with the other teams of the Lead to Order unit and collaborate with architecture and engineering teams to define scalable, API-driven and microservices-based solutions
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Security Engineer (Mobile Security) - 12 Month Contract
Security Engineer (Mobile Security) - 12 Month Contract
Samsung Electronics (UK) Ltd
South East
Competitive
Hands-on experience with Javacard API, crypto engines and crypto libraries.
Hands-on experience with Javacard API, crypto engines and crypto libraries.
Job Title: Solution Architect Platform Modernisation - Location: London, `1`1United Kingdom (Hybrid 2 days per week in office) Job Type: Contract (6 months, Inside IR35) The Role As a Solution Architect within our Platform and Innovation ecosystem, you will play a pivotal role in shaping forward-looking architectures that enable rapid, secure, and scalable delivery. Working on modernisation initiatives that protect customers and the bank from financial threats, you will design microservice and event-driven solutions that are resilient, maintainable, and cloud-native. This role offers the opportunity to influence platform strategy, enable engineering teams to move at pace, and deliver solutions that operate at enterprise scale while supporting innovation labs and product teams. * Shape and deliver solution architecture aligned to strategic objectives across platforms and ...
Job Title: Solution Architect Platform Modernisation - Location: London, `1`1United Kingdom (Hybrid 2 days per week in office) Job Type: Contract (6 months, Inside IR35) The Role As a Solution Architect within our Platform and Innovation ecosystem, you will play a pivotal role in shaping forward-looking architectures that enable rapid, secure, and scalable delivery. Working on modernisation initiatives that protect customers and the bank from financial threats, you will design microservice and event-driven solutions that are resilient, maintainable, and cloud-native. This role offers the opportunity to influence platform strategy, enable engineering teams to move at pace, and deliver solutions that operate at enterprise scale while supporting innovation labs and product teams. * Shape and deliver solution architecture aligned to strategic objectives across platforms and ...
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Job Title: Solutions Architect (Applications and Integration) Location: Remote (occasional travel to London required) Salary: £75,000 - £85,000 (Depending on location) Would you like to work for an organisation plays a pivotal role in safeguarding and improving the quality of health and social care services across England. My client plays a vital role in improving outcomes across health and social care by using data, technology, and insight to drive meaningful change. With a strong focus on innovation and digital transformation, they are investing in modern cloud platforms, artificial intelligence, and advanced analytics to become a truly intelligence-led regulator. Solutions Architect Responsibilities * Define and promote integration patterns and approaches (e.g. APIs, event-driven integration, messaging, batch, data synchronisation) appropriate to business needs.
Job Title: Solutions Architect (Applications and Integration) Location: Remote (occasional travel to London required) Salary: £75,000 - £85,000 (Depending on location) Would you like to work for an organisation plays a pivotal role in safeguarding and improving the quality of health and social care services across England. My client plays a vital role in improving outcomes across health and social care by using data, technology, and insight to drive meaningful change. With a strong focus on innovation and digital transformation, they are investing in modern cloud platforms, artificial intelligence, and advanced analytics to become a truly intelligence-led regulator. Solutions Architect Responsibilities * Define and promote integration patterns and approaches (e.g. APIs, event-driven integration, messaging, batch, data synchronisation) appropriate to business needs.
Job Title: Solutions Architect (AI and Automation) Location: Remote (occasional travel to London required) Salary: £75,000 - £85,000 (Depending on location) Would you like to work for an organisation plays a pivotal role in safeguarding and improving the quality of health and social care services across England. My client plays a vital role in improving outcomes across health and social care by using data, technology, and insight to drive meaningful change. With a strong focus on innovation and digital transformation, they are investing in modern cloud platforms, artificial intelligence, and advanced analytics to become a truly intelligence-led regulator. Solutions Architect Responsibilities * Design scalable, secure, and ethical AI and data solutions using Microsoft Azure technologies. * Translate business requirements into end-to-end solution architecture across AI, ...
Job Title: Solutions Architect (AI and Automation) Location: Remote (occasional travel to London required) Salary: £75,000 - £85,000 (Depending on location) Would you like to work for an organisation plays a pivotal role in safeguarding and improving the quality of health and social care services across England. My client plays a vital role in improving outcomes across health and social care by using data, technology, and insight to drive meaningful change. With a strong focus on innovation and digital transformation, they are investing in modern cloud platforms, artificial intelligence, and advanced analytics to become a truly intelligence-led regulator. Solutions Architect Responsibilities * Design scalable, secure, and ethical AI and data solutions using Microsoft Azure technologies. * Translate business requirements into end-to-end solution architecture across AI, ...
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Contribute to architecture within team scope (API boundaries, data models, messaging patterns, failure handling). * Solid understanding of API design (versioning, idempotency), request/response lifecycles, and integration patterns (REST/JSON, async messaging). * Familiarity with microservice and event-driven architectures (service boundaries, API gateways, asynchronous workflows).
Contribute to architecture within team scope (API boundaries, data models, messaging patterns, failure handling). * Solid understanding of API design (versioning, idempotency), request/response lifecycles, and integration patterns (REST/JSON, async messaging). * Familiarity with microservice and event-driven architectures (service boundaries, API gateways, asynchronous workflows).
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Ful Stack Web Developer | £35,000 - £45,000 | Remote-first | Lancashire HQ (2-3 days onsite per year) I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They're looking for a Web Software Developer to join a collaborative internal engineering team responsible for building and improving these systems. This role offers the opportunity to work on business-critical applications used across the organisation, contributing to the development of modern web-based platforms while learning from experienced engineers in the team. The environment places a strong emphasis on clean code, structured development practices, and quality-focused ...
Ful Stack Web Developer | £35,000 - £45,000 | Remote-first | Lancashire HQ (2-3 days onsite per year) I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They're looking for a Web Software Developer to join a collaborative internal engineering team responsible for building and improving these systems. This role offers the opportunity to work on business-critical applications used across the organisation, contributing to the development of modern web-based platforms while learning from experienced engineers in the team. The environment places a strong emphasis on clean code, structured development practices, and quality-focused ...
I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They are looking for a Senior Web Software Developer to join a small, collaborative internal engineering team responsible for designing and building these systems from the ground up. This role offers the opportunity to work on business-critical applications used across the organisation, helping shape the architecture and development standards as the company transitions to a modern web-based platform. The team places a strong emphasis on clean code, structured development practices, and quality-first engineering, and they are looking for someone who enjoys solving real-world ...
I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They are looking for a Senior Web Software Developer to join a small, collaborative internal engineering team responsible for designing and building these systems from the ground up. This role offers the opportunity to work on business-critical applications used across the organisation, helping shape the architecture and development standards as the company transitions to a modern web-based platform. The team places a strong emphasis on clean code, structured development practices, and quality-first engineering, and they are looking for someone who enjoys solving real-world ...
Full Stack Engineer - Outisde IR35 up to £525 - Intial 4 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Node/Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
Full Stack Engineer - Outisde IR35 up to £525 - Intial 4 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Node/Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
Job Title: Java Developer - Rate: £400 (InsideIR35) Duration: 12 Months - Location: Remote - Clearance: BPSS - Stages: 1 Stage - Must Have Government Experience - Key Responsibilities * Design, develop, and maintain Java applications in line with digital and engineering standards * Build and supportmicroservicesandRESTful APIs * Collaborate with product owners, designers, testers, and DevOps engineers in agile teams * Write clean, maintainable, and well-tested code (TDD/BDD where applicable) * Participate in code reviews and contribute to continuous improvement * Ensure applications meetsecurity, accessibility, and performancestandards * Troubleshoot and resolve defects across development and production environments * Support CI/CD pipelines and automated deployment processes - Essential Skills & Experience * Strong commercial experience withJava (Java 8+)
Job Title: Java Developer - Rate: £400 (InsideIR35) Duration: 12 Months - Location: Remote - Clearance: BPSS - Stages: 1 Stage - Must Have Government Experience - Key Responsibilities * Design, develop, and maintain Java applications in line with digital and engineering standards * Build and supportmicroservicesandRESTful APIs * Collaborate with product owners, designers, testers, and DevOps engineers in agile teams * Write clean, maintainable, and well-tested code (TDD/BDD where applicable) * Participate in code reviews and contribute to continuous improvement * Ensure applications meetsecurity, accessibility, and performancestandards * Troubleshoot and resolve defects across development and production environments * Support CI/CD pipelines and automated deployment processes - Essential Skills & Experience * Strong commercial experience withJava (Java 8+)
Role Details * Role/Job Title: GIS Developer * Work Location: Wokingham (Onsite) * Duration of Assignment: 6 months - Role Summary - We are looking for a skilled Web GIS Developer to design, develop, and maintain GIS-based web applications and services. The candidate will work closely with project teams to build spatial solutions using ESRI technologies, integrate GIS components with enterprise systems, and support geospatial data management and visualization needs. This role requires strong hands on experience in GIS development, spatial databases, web technologies, and ArcGIS Enterprise components. Key Responsibilities * Develop and maintain GIS-based web applications using ESRI technologies. * Build and configure applications using ArcGIS Enterprise components such as ArcGIS Portal, ArcGIS Server, and Data Store.
Role Details * Role/Job Title: GIS Developer * Work Location: Wokingham (Onsite) * Duration of Assignment: 6 months - Role Summary - We are looking for a skilled Web GIS Developer to design, develop, and maintain GIS-based web applications and services. The candidate will work closely with project teams to build spatial solutions using ESRI technologies, integrate GIS components with enterprise systems, and support geospatial data management and visualization needs. This role requires strong hands on experience in GIS development, spatial databases, web technologies, and ArcGIS Enterprise components. Key Responsibilities * Develop and maintain GIS-based web applications using ESRI technologies. * Build and configure applications using ArcGIS Enterprise components such as ArcGIS Portal, ArcGIS Server, and Data Store.
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We are working with a well established engineering group seeking a Senior Fullstack Developer to support the continued development of their core operational and customer facing systems. This is a hands-on, delivery-focused role, where you will be actively building, improving and maintaining live systems used across the business. The role would suit a senior developer who enjoys staying close to the code, while supporting and mentoring a junior developer. You will contribute directly to customer portals, APIs and IoT integrations while contributing to technical decisions and supporting development best practice within the team. Key Duties and Responsibilities * Design, develop and deploy scalable web applications across frontend and backend environments using modern frameworks and cloud platforms.
We are working with a well established engineering group seeking a Senior Fullstack Developer to support the continued development of their core operational and customer facing systems. This is a hands-on, delivery-focused role, where you will be actively building, improving and maintaining live systems used across the business. The role would suit a senior developer who enjoys staying close to the code, while supporting and mentoring a junior developer. You will contribute directly to customer portals, APIs and IoT integrations while contributing to technical decisions and supporting development best practice within the team. Key Duties and Responsibilities * Design, develop and deploy scalable web applications across frontend and backend environments using modern frameworks and cloud platforms.
Related Jobs
Locations
- Moorgate
- Southwark
- St James
- The City, City (EC2)
- The City, City (EC3)
- Canary Wharf
- Charing Cross
- Datchet Common
- Euston
- Farnborough Park
- City of London
- Cambridge
- Central London
- West End
- South East London
- Reading
- Loughton
- Bracknell
- South West London
- Milton Keynes
- London
- Cambridgeshire
- Berkshire
- Essex
- Buckinghamshire
- Oxfordshire
- Surrey
- Hertfordshire
- Hampshire
- Kent
- South East
- East Anglia