Date posted
Commute time
Locations
Type of Company
Job types
Salaries
Locations
Locations
Salaries
Date posted
Type of Company
Job types
There is no job matching your search
Api
Chelmsford
No need to fret! We’re adding new jobs every single day. Find out immediately when we’ve found a match for you.
0 Contract API jobs in Chelmsford + 20 miles
46 exact matches jobs are outside your preferred location
)
Associate Director, Engineering (Education)
Associate Director, Engineering (Education)
IRIS Recruitment
Slough (SL3)
Competitive plus bonus and benefits
Ensure scalable, API-first, cloud-native platform design * Strong understanding of DevOps, SRE, API architecture and AI integration
Ensure scalable, API-first, cloud-native platform design * Strong understanding of DevOps, SRE, API architecture and AI integration
FEATURED
)
Experience with infrastructure-as-code, production-grade Linux environments, and API services (Flask/Gunicorn).
Experience with infrastructure-as-code, production-grade Linux environments, and API services (Flask/Gunicorn).
FEATURED
This is a hands-on quality engineering role responsible for designing, executing, and maintaining automated and manual tests for backend and API-driven systems in a financial services environment. * Working knowledge of test automation frameworks and tools (e.g., API automation, backend test frameworks, or UI automation where applicable).
This is a hands-on quality engineering role responsible for designing, executing, and maintaining automated and manual tests for backend and API-driven systems in a financial services environment. * Working knowledge of test automation frameworks and tools (e.g., API automation, backend test frameworks, or UI automation where applicable).
Design, develop, and maintain automated test frameworks for digital asset platforms, with a strong focus on API and backend testing
Design, develop, and maintain automated test frameworks for digital asset platforms, with a strong focus on API and backend testing
)
The organisation's website operates on a headless architecture using Contentful CMS, with the front-end hosted on Vercel, and integrates with CRM, analytics, and internal systems through API-driven services. * Design and implement API-driven integrations between core systems including CRM, website platforms, marketing tools, analytics environments, and internal databases, ensuring systems operate as a connected digital ecosystem. * Experience building API-driven integrations between enterprise platforms including CRM systems, web platforms, marketing systems, and analytics environments.
The organisation's website operates on a headless architecture using Contentful CMS, with the front-end hosted on Vercel, and integrates with CRM, analytics, and internal systems through API-driven services. * Design and implement API-driven integrations between core systems including CRM, website platforms, marketing tools, analytics environments, and internal databases, ensuring systems operate as a connected digital ecosystem. * Experience building API-driven integrations between enterprise platforms including CRM systems, web platforms, marketing systems, and analytics environments.
PREMIUM
)
Product Management - Private markets, Charles River Development, Assistant Vice President
Product Management - Private markets, Charles River Development, Assistant Vice President
State Street Corporation
London
Competitive
Define and deliver the roadmap for horizontal platform capabilities serving all private markets asset classes including core data services, cross-fund analytics, workflow automation, and API infrastructure. * Familiarity with data architecture concepts: data modeling, ETL pipelines, API design, and event-driven systems. * Experience with API-first product design and developer experience (DX) programs.
Define and deliver the roadmap for horizontal platform capabilities serving all private markets asset classes including core data services, cross-fund analytics, workflow automation, and API infrastructure. * Familiarity with data architecture concepts: data modeling, ETL pipelines, API design, and event-driven systems. * Experience with API-first product design and developer experience (DX) programs.
)
T24 Technical Specialist (Temenos Transact)
T24 Technical Specialist (Temenos Transact)
Hireful
Central London, London
£66K Basic + Bonus + Benefits package
We are seeking an experienced T24 Technical Specialist to join a dynamic international banking technology team in Central London. This is an excellent opportunity for a technically strong professional with deep expertise in Temenos Transact (T24) to play a key role in supporting, enhancing, and evolving a critical core banking platform. This is an in-house, end client role with exceptional career security, progression & stability. Location: Central London (Hybrid: 4 days office / 1 day home) Salary: £66,000 per annum starting salary + bonus & very good corporate bank benefits package - Job title: Temenos Transact (T24) Systems Developer. The Role - You will act as a subject matter expert for T24, ensuring smooth day-to-day operations, driving system improvements, and supporting integrations across the bank’s IT landscape.
We are seeking an experienced T24 Technical Specialist to join a dynamic international banking technology team in Central London. This is an excellent opportunity for a technically strong professional with deep expertise in Temenos Transact (T24) to play a key role in supporting, enhancing, and evolving a critical core banking platform. This is an in-house, end client role with exceptional career security, progression & stability. Location: Central London (Hybrid: 4 days office / 1 day home) Salary: £66,000 per annum starting salary + bonus & very good corporate bank benefits package - Job title: Temenos Transact (T24) Systems Developer. The Role - You will act as a subject matter expert for T24, ensuring smooth day-to-day operations, driving system improvements, and supporting integrations across the bank’s IT landscape.
FEATURED
)
Large Scale Solar Electrician
Large Scale Solar Electrician
Astute Technical Recruitment Ltd
Thetford (IP24)
£38000.00 - £48000.00 per annum + van, fuel card, bonus & more
Astute's Renewables team is very proudly partnered with a huge player in the global solar market. We have a focus on the UK market for them and we're actively looking for a Solar Technician / Field Solar Engineer to join the team. The client delivers varying services, from O&M to full design and system integration. This position is field based and we're looking for a Solar Technician / Solar Engineer with a basic salary of up to £48,000 and you'd also receive a hugely impressive benefits package. Large scale / utility scale solar experience is key in achieving the top end of the salary bracket. If you're a Solar Technician or Solar Engineer looking to work for a key organisation in the market, then submit your CV to apply today. Responsibilities and duties of the Field Solar Engineer role * Planned and reactive works across a variety of ground mount solar assets
Astute's Renewables team is very proudly partnered with a huge player in the global solar market. We have a focus on the UK market for them and we're actively looking for a Solar Technician / Field Solar Engineer to join the team. The client delivers varying services, from O&M to full design and system integration. This position is field based and we're looking for a Solar Technician / Solar Engineer with a basic salary of up to £48,000 and you'd also receive a hugely impressive benefits package. Large scale / utility scale solar experience is key in achieving the top end of the salary bracket. If you're a Solar Technician or Solar Engineer looking to work for a key organisation in the market, then submit your CV to apply today. Responsibilities and duties of the Field Solar Engineer role * Planned and reactive works across a variety of ground mount solar assets
)
Freshfields is undergoing an exciting period of digital transformation, and we are looking for an Innovation Engineer to help us accelerate it. This is a high-impact, hands-on role for someone who loves to build, experiment, and turn innovative ideas into working solutions that make a meaningful difference across our global firm. Working within our Innovation team, you will rapidly prototype, develop, and iterate new tools, workflows, and AI-powered solutions helping our people work smarter, faster, and more effectively. If you thrive in fast-moving environments, enjoy collaborating across teams, and have a passion for creating real, usable technology, wed love to hear from you. Working at Freshfields - Youll join a fast-paced, globally connected team focused on shaping the future of legal work. We work in a hybrid model, collaborating with colleagues across time zones, and ...
Freshfields is undergoing an exciting period of digital transformation, and we are looking for an Innovation Engineer to help us accelerate it. This is a high-impact, hands-on role for someone who loves to build, experiment, and turn innovative ideas into working solutions that make a meaningful difference across our global firm. Working within our Innovation team, you will rapidly prototype, develop, and iterate new tools, workflows, and AI-powered solutions helping our people work smarter, faster, and more effectively. If you thrive in fast-moving environments, enjoy collaborating across teams, and have a passion for creating real, usable technology, wed love to hear from you. Working at Freshfields - Youll join a fast-paced, globally connected team focused on shaping the future of legal work. We work in a hybrid model, collaborating with colleagues across time zones, and ...
)
Position Overview - Job Title Lead Engineer - Location London - Corporate Title Vice President - You will play a key role in the transformation of Rates and Credit Fixed Income technology landscape. As part of our multi-year platform modernisation project, you will be responsible for building a suite of new, real-time, high-performance applications supporting various trading workflows. You will be involved in architecting solutions across the stack, encouraging best practices and working closely with Business stakeholders to build a maintainable, operationally efficient and scalable platform to last the next decade. What well offer you - A healthy, engaged and well-supported workforce are better equipped to do their best work and, more importantly, enjoy their lives inside and outside the workplace. Thats why we are committed to providing an environment with your development and ...
Position Overview - Job Title Lead Engineer - Location London - Corporate Title Vice President - You will play a key role in the transformation of Rates and Credit Fixed Income technology landscape. As part of our multi-year platform modernisation project, you will be responsible for building a suite of new, real-time, high-performance applications supporting various trading workflows. You will be involved in architecting solutions across the stack, encouraging best practices and working closely with Business stakeholders to build a maintainable, operationally efficient and scalable platform to last the next decade. What well offer you - A healthy, engaged and well-supported workforce are better equipped to do their best work and, more importantly, enjoy their lives inside and outside the workplace. Thats why we are committed to providing an environment with your development and ...
)
Summary - Posted: 18 Mar 2026Weekly Hours: 35 - Role Number:200650956-2114Apple is a place where extraordinary people gather to do their best work. Together we create products and experiences people once couldnt have imagined - and now cant imagine living without. If youre motivated by the idea of making a real impact, and joining a team where we pride ourselves in being one of the most diverse and inclusive companies in the world, a career with Apple might be your dream job! You will become a member of the Sales Finance team at Apple. With approximately 150 employees based across 4 regional hubs within EMEIA (Europe, Middle East, India and Africa), we create value, collaborating with many teams to provide outstanding commercial and financial support. We set the bar high; go out of our way to help others; share knowledge; filter out noise to focus on the essential; encourage ...
Summary - Posted: 18 Mar 2026Weekly Hours: 35 - Role Number:200650956-2114Apple is a place where extraordinary people gather to do their best work. Together we create products and experiences people once couldnt have imagined - and now cant imagine living without. If youre motivated by the idea of making a real impact, and joining a team where we pride ourselves in being one of the most diverse and inclusive companies in the world, a career with Apple might be your dream job! You will become a member of the Sales Finance team at Apple. With approximately 150 employees based across 4 regional hubs within EMEIA (Europe, Middle East, India and Africa), we create value, collaborating with many teams to provide outstanding commercial and financial support. We set the bar high; go out of our way to help others; share knowledge; filter out noise to focus on the essential; encourage ...
)
We are seeking an experienced Systems Engineer with strong expertise in enterprise IoT infrastructure, server engineering, and networking to support and implement IoT/OT solutions for a global financial services environment. This is not a traditional Windows Administrator or L1 support role. The position requires L2 to early L3 technical depth, combining architectural understanding with hands-on implementation, troubleshooting, and operational support across devices, networks, servers, SaaS platforms, and security frameworks. The role supports enterprise-grade IoT deployments, including device configuration, patch testing, secure integrations, and rollout activities, while working closely with internal teams, vendors, and stakeholders. Key Responsibilities * Support and implement enterprise IoT/OT device infrastructure, including configuration, maintenance, patching, and ...
We are seeking an experienced Systems Engineer with strong expertise in enterprise IoT infrastructure, server engineering, and networking to support and implement IoT/OT solutions for a global financial services environment. This is not a traditional Windows Administrator or L1 support role. The position requires L2 to early L3 technical depth, combining architectural understanding with hands-on implementation, troubleshooting, and operational support across devices, networks, servers, SaaS platforms, and security frameworks. The role supports enterprise-grade IoT deployments, including device configuration, patch testing, secure integrations, and rollout activities, while working closely with internal teams, vendors, and stakeholders. Key Responsibilities * Support and implement enterprise IoT/OT device infrastructure, including configuration, maintenance, patching, and ...
)
Head of Quality Engineering
Head of Quality Engineering
Infoplus Technologies UK Ltd
City of London (EC3M)
From £650 to £700 per day
API Automation (REST Assured, Karate, Postman)
API Automation (REST Assured, Karate, Postman)
Additional Experience: Experience with microservices architecture and API management.
Additional Experience: Experience with microservices architecture and API management.
Proficient in REST API design and can create endpoints that scale and maintain over time.
Proficient in REST API design and can create endpoints that scale and maintain over time.
Own the integration lifecycle: technical scoping, data flow definition, API setup, configuration, troubleshooting, and delivery.
Own the integration lifecycle: technical scoping, data flow definition, API setup, configuration, troubleshooting, and delivery.
Design and build Automation from scratch, Web Services/API , Performance & Accessibility test frameworks with DevOps CI/CD * API testing with Rest Assured or Postman
Design and build Automation from scratch, Web Services/API , Performance & Accessibility test frameworks with DevOps CI/CD * API testing with Rest Assured or Postman
Architecture & Integration: Distributed systems, microservices, cloud-native (Azure/AWS/GCP); secure API design (REST/GraphQL).
Architecture & Integration: Distributed systems, microservices, cloud-native (Azure/AWS/GCP); secure API design (REST/GraphQL).
Big banks and enterprises use our API, which means our search and validation engines need to be lightning-fast and bulletproof, even when our biggest partners turn on the tap.
Big banks and enterprises use our API, which means our search and validation engines need to be lightning-fast and bulletproof, even when our biggest partners turn on the tap.
Technical working knowledge of API integrations (REST & SOAP).
Technical working knowledge of API integrations (REST & SOAP).
Knowledge of Protocol Buffers schema evolution and API versioning strategies
Knowledge of Protocol Buffers schema evolution and API versioning strategies
Create API-first integration layers for internal teams and external partners * Design and evolve an API-first integration platform enabling internal teams and external partners to build and integrate services efficiently
Create API-first integration layers for internal teams and external partners * Design and evolve an API-first integration platform enabling internal teams and external partners to build and integrate services efficiently
Knowledgeable of REST, API design patterns and microservices.
Knowledgeable of REST, API design patterns and microservices.
Experience managing teams building APIs in TypeScript/Node.js (NestJS, Express, GraphQL/Apollo); the crews API layer is TypeScript-based. * Familiarity with observability tooling (Datadog, Prometheus, Grafana) and API gateway management (Kong). * Experience managing teams serving both internal platform consumers and external API clients (dual-interface API patterns).
Experience managing teams building APIs in TypeScript/Node.js (NestJS, Express, GraphQL/Apollo); the crews API layer is TypeScript-based. * Familiarity with observability tooling (Datadog, Prometheus, Grafana) and API gateway management (Kong). * Experience managing teams serving both internal platform consumers and external API clients (dual-interface API patterns).
Mentor engineers in secure-by-design patterns, client-side security, and secure API design. * Experience with developing and maintaining web-focused tooling and automation (Burp extensions, custom scanners, authenticated API fuzzers, GraphQL mutation explorers, Puppeteer/Playwright scripts).
Mentor engineers in secure-by-design patterns, client-side security, and secure API design. * Experience with developing and maintaining web-focused tooling and automation (Burp extensions, custom scanners, authenticated API fuzzers, GraphQL mutation explorers, Puppeteer/Playwright scripts).