1 to 25 of 142 API Design Jobs

Apigee Developer

Hiring Organisation
ARM
Location
Slough, Berkshire, United Kingdom
Employment Type
Contract
market rate Slough based - hybrid working - 3 days a week on site Telecoms sector We are seeking a skilled and motivated Apigee Developer to design, build, and manage API solutions that enable secure, scalable, and high-performing integrations across our clients' digital ecosystems. You will play … role in delivering API-led connectivity strategies using Google Apigee, supporting both internal and external-facing services. This is an exciting opportunity to work in a fast-paced, technology-driven environment, contributing to large-scale transformation programmes and modern API architectures. Key Responsibilities: Design, develop, and deploy ...

AWS API Engineer / Data Architect

Hiring Organisation
Capgemini
Location
Manchester, United Kingdom
Employment Type
Full Time
Data Global Practice, which has seen strong growth and continued success across a variety of projects and sectors. Data Platforms is home to API Engineers, Data Engineers, Platform Engineers, Solutions Architects and Business Analysts focused on driving our customersdigital and data transformation using modern cloud platforms. We specialise … latest frameworks, reference architectures and technologies across AWS, Azure and GCP, including API/microservices patterns and data platforms such as AWS-native analytics services and Snowflake. As an AWS API Engineer/Data Architect at Capgemini, you will design and deliver secure, scalable API ...

Remote Lead Java Developer/Solution Architect (15-week contract)

Hiring Organisation
17918
Location
Chelmsford, Essex, United Kingdom
description gravity9 is seeking a Technical Lead/Solution Architect to lead the design and build of a secure metadata catalogue platform for a UK public sector client. The platform will serve as a centralised index for discovering, governing, and controlling access to data distributed across multiple independent domains … integrates with separate data storage and encryption services provided by other technology partners. Duration 15 weeks Commitment Half-time for the first 4 weeks (design phase); full-time for the remaining 11 weeks (build and integration) Working model Mostly remote with periodic onsite attendance Security clearance BPSS (Baseline Personnel ...

Remote Lead Java Developer/Solution Architect (15-week contract)

Hiring Organisation
17918
Location
Crawley, Sussex, United Kingdom
description gravity9 is seeking a Technical Lead/Solution Architect to lead the design and build of a secure metadata catalogue platform for a UK public sector client. The platform will serve as a centralised index for discovering, governing, and controlling access to data distributed across multiple independent domains … integrates with separate data storage and encryption services provided by other technology partners. Duration 15 weeks Commitment Half-time for the first 4 weeks (design phase); full-time for the remaining 11 weeks (build and integration) Working model Mostly remote with periodic onsite attendance Security clearance BPSS (Baseline Personnel ...

Remote Lead Java Developer/Solution Architect (15-week contract)

Hiring Organisation
17918
Location
Southend-on-Sea, Essex, United Kingdom
description gravity9 is seeking a Technical Lead/Solution Architect to lead the design and build of a secure metadata catalogue platform for a UK public sector client. The platform will serve as a centralised index for discovering, governing, and controlling access to data distributed across multiple independent domains … integrates with separate data storage and encryption services provided by other technology partners. Duration 15 weeks Commitment Half-time for the first 4 weeks (design phase); full-time for the remaining 11 weeks (build and integration) Working model Mostly remote with periodic onsite attendance Security clearance BPSS (Baseline Personnel ...

Remote Lead Java Developer/Solution Architect (15-week contract)

Hiring Organisation
17918
Location
Stoke-on-Trent, Staffordshire, United Kingdom
description gravity9 is seeking a Technical Lead/Solution Architect to lead the design and build of a secure metadata catalogue platform for a UK public sector client. The platform will serve as a centralised index for discovering, governing, and controlling access to data distributed across multiple independent domains … integrates with separate data storage and encryption services provided by other technology partners. Duration 15 weeks Commitment Half-time for the first 4 weeks (design phase); full-time for the remaining 11 weeks (build and integration) Working model Mostly remote with periodic onsite attendance Security clearance BPSS (Baseline Personnel ...

Full Stack - Tech Lead (Node.js, React, Java Script)

Hiring Organisation
Expleo Group
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Permanent
Overview Provide technical leadership across development teams to ensure the design and delivery of high-quality, scalable, and maintainable software solutions. The role combines hands-on development expertise with leadership responsibilities, translating business requirements into robust technical solutions while driving engineering excellence, delivery consistency, and collaboration across onshore … offshore teams. Responsibilities Technical Leadership & Solution Delivery Lead the design and development of key features, components, and services across the application stack Provide hands-on guidance in building scalable applications using React, Node.js, and TypeScript Own critical technical decisions, ensuring alignment with architectural standards and long-term scalability goals ...

Senior Azure AI Platform Engineer | Azure AI Foundry | C# | APIs

Hiring Organisation
Intelligent Talent Solutions Ltd
Location
Birmingham, West Midlands, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
delivering secure, scalable and reusable AI capabilities that can be consumed across digital products, automation platforms, Copilot solutions and wider business services. Key Responsibilities Design and build AI-enabled services using Azure AI Foundry and Azure OpenAI Design, develop and support secure REST APIs using C# and .NET … Build and manage Azure Functions and serverless services Develop and support MCP Servers and AI integration services Design event-driven architectures using Azure Service Bus Manage APIs through Azure API Management Expose AI capabilities through secure, auditable APIs and reusable services Support Copilot Studio and AI-enabled workflows ...

Senior Software Engineer

Hiring Organisation
WTW
Location
Surrey, United Kingdom
Employment Type
Full Time
technical input, guidance and leadership to the team (including code quality, best practices, processes, some aspects of release management, etc.). Assist in the design and documenting of solutions meeting functional and non-functional requirements. Lead by example getting directly involved in the day-to-day delivery of work … control plane engineering Practical experience designing and developing management and controlplane capabilities for line of business or SaaS applications, including stack/environment management, API design for platform services, and developer/operator UX. Experience working with or designing Azure stamp-based or scale‐unit architectures, including multi ...

Principal Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
architectural coherence to decisions made within individual domains Identify technical risks and compounding complexity before they become incidents Set standards for engineering quality — system design, observability, reliability, API design — that every team builds to Be the senior technical voice in cross‐team planning, roadmap discussions, and major … fast‐moving engineering org — and has the range to show for it Can credibly walk into a conversation about data pipeline architecture, RAG evaluation, API design, or system scalability — and add something useful in all of them Owns problems, not just opinions. You're not here to review ...

MuleSoft Developer

Hiring Organisation
EUROPEAN SOFTWARE SOLUTIONS (UK) LIMITED
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£350 per day
maintaining integration solutions within the Energy & Utilities domain . This is an individual contributor role requiring hands-on expertise across the full integration lifecyclefrom design and documentation to deployment and incident handling. Key Responsibilities Design & Architecture Design scalable, secure, and reusable integration solutions using MuleSoft Anypoint Platform … Define API-led connectivity architecture and integration patterns Collaborate with enterprise architects and business stakeholders Development & Implementation Develop APIs and integrations connecting Salesforce, Powercloud , and SAP, Azure & AWS Build, test, and deploy Mule applications using best practices Implement data transformation, orchestration, and real-time/event-driven integrations Documentation ...

Backend Software Engineer - SaaS - Remote (Northern Ireland) JBLE1 NI

Hiring Organisation
VANRATH
Location
Belfast, UK
genuine impact on technical direction, engineering standards, and long-term platform strategy. As a Senior Backend Engineer, you will take ownership of backend architecture, API design, infrastructure, and platform reliability. You will work closely with developers across the business to improve scalability, security, performance, and operational excellence while … experience working with AWS cloud infrastructure including services such as Lambda, RDS, S3, and IAM * Strong understanding of application security, authentication, authorisation, and secure API design * Experience designing, optimising, and scaling relational databases (PostgreSQL preferred) * Experience with CI/CD pipelines, DevOps practices, and production environments * Comfortable leading ...

Integration Tech Lead

Hiring Organisation
Glocomms
Location
Edinburgh, Scotland, United Kingdom
seeking an experienced Senior Technical Lead – Apigee to drive the design, implementation, and migration of enterprise-scale API management platforms. This role will be responsible for leading the delivery of Apigee Hybrid and Apigee X solutions , supporting complex API transformation programs, and guiding organizations through the migration … candidate will act as a senior technical authority, working closely with clients, architects, developers, and infrastructure teams to deliver secure, scalable, and high-performing API ecosystems. This is a highly visible, client-facing position requiring both deep technical expertise and strong leadership capabilities. Key Responsibilities Lead ...

Senior Java Engineer

Hiring Organisation
Tiro Partners Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
development tools (e.g. Claude Code, GitHub Copilot, LLMs) Experience with MCP, AI automation, or agentic AI systems Strong understanding of microservices and API design London 3 days a week in the City Cracow- 3 days per week -7920 Euro Gross Perm Month + Bonus + Bens Poland Remote … Euro Per year + Bonus + Bens The interview process is an algorithmic coding exercise online with client panel. Java/Microservices/API design/LLMs/AI/Claude Code/Copilot/Algo ...

Python FastAPI Developer

Hiring Organisation
Teksystems
Location
Bristol, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £450/day
Python Developer - Onsite in Bristol 3x per week Job Description We are seeking a talented Python Developer with strong experience in backend development and API design using FastAPI. This role involves working with Pydantic for schema validation and SQLite for lightweight relational data storage, requiring an ability … communicate effectively and collaborate with a diverse team. Responsibilities Design and develop Python-based applications and services. Build and maintain REST APIs, backend systems, and integrations. Streamline versioning, release, and packaging processes of the application code. Establish testing strategies including unit, integration, end-to-end, performance, and resilience tests. ...

Technical Architect

Hiring Organisation
SR2
Location
Swindon, Wiltshire, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
experienced Technical Architect looking to shape the future of enterprise technology? We're looking for a technically strong architect to lead the design and evolution of modern, cloud-first solutions within this financial services business! This is a strategic role where you'll define architecture, influence technology decisions … Architect or similar, with strong expertise across Microsoft technologies and modern cloud architecture; Stack: Microsoft Azure and cloud-native architecture Microservices and distributed systems API design, API Management and enterprise integration .NET and Microsoft technology stacks Microsoft Entra ID, Microsoft 365 and Dynamics 365 Desirable: Cloud migration ...

Enterprise Architect

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
govern the architecture of the Digital Backbone – the foundational layer that connects systems, data, and services across the enterprise – while driving adoption of API-first principles, integration best practices, and enterprise-wide governance. The Digital Backbone is Howden Group's foundational technology and integration layer, designed to eliminate fragmented … systems and manual processes, and to enable digital product delivery and innovation at scale. WHAT WILL YOU BE DOING? Architecture Leadership & Design Define, own, and communicate the enterprise architecture of the Digital Backbone, establishing it as the strategic integration platform across Howden Group. Architect and lead the design ...

Tech Practice Principal - Backend Lead

Hiring Organisation
AND Digital
Location
Reading, Berkshire, UK
Employment Type
Full-time
Principal - Backend Lead \n Location: Hybrid: Client Site, AND Digital office, Remote. Proximity to Reading/Thames Valley is key \n Core Tech: Node.js, API Integration, Microservices, Microsoft Azure Cloud \n AND Introduction \n At AND, we accelerate the development of digital capabilities. In practice, that means helping ambitious … support for these backend systems. \n Engineering Culture: Set the "gold standard" for backend engineering routines. Drive a culture of technical pride, ensuring robust API design, secure cloud deployment practices, and insightful code reviews. \n\n Team Leadership & Delivery Management \n \n Delivery Accountability: Operates in "Project Mode ...

Integration Engineer

Hiring Organisation
Searchability NS&D
Location
City of London, London, United Kingdom
Data & API Integration Engineer/Architect Location: London customer site – 1/2 days p/week on site Salary: Up to £105k DoE plus bonus Clearance: Active SC preferred - can sponsor if not currently held (British passport required) To apply, email: henry.clay-davies@searchability.com We’re working with … leading technology consultancy delivering secure, large-scale digital platforms across public sector and enterprise programmes. They’re looking for an experienced AWS API & Integration Engineer to help design and deliver modern, scalable API-led architectures. This is a hands-on engineering role focused on building secure, cloud ...

Lead Solution Architect Endur (ETRM Gas & Power Trading)

Hiring Organisation
BP Energy
Location
South West London, London, United Kingdom
Employment Type
Work From Home
improved valuation,, internal market and others) are architecturally coherent, reusable and aligned with bp's enterprise technology strategy. Establish and chair the GPTI Architecture Design Authority, governing all significant change through structured reviews, design challenges and sign-off gates. Influence and advise VP/SVP-level stakeholders … through risk analytics (VaR, Greeks, Monte Carlo, stress testing), P&L attribution, settlement, invoicing, confirmations and regulatory reporting (REMIT, EMIR, MiFID II, ACER). Design and govern the market connectivity architecture, covering exchange connectivity, broker interfaces, electronic trading platforms, TSO/DSO nomination interfaces and real-time price feeds. ...

Lead Solution Architect Endur (ETRM Gas & Power Trading)

Hiring Organisation
17918
Location
London, United Kingdom
improved valuation,, internal market and others) are architecturally coherent, reusable and aligned with bp's enterprise technology strategy. Establish and chair the GPTI Architecture Design Authority, governing all significant change through structured reviews, design challenges and sign-off gates. Influence and advise VP/SVP-level stakeholders … through risk analytics (VaR, Greeks, Monte Carlo, stress testing), P&L attribution, settlement, invoicing, confirmations and regulatory reporting (REMIT, EMIR, MiFID II, ACER). Design and govern the market connectivity architecture, covering exchange connectivity, broker interfaces, electronic trading platforms, TSO/DSO nomination interfaces and real-time price feeds. ...

E2E IT Architect (Enterprise Systems) (f/m/div.)

Hiring Organisation
KEENFINITY GMBH
Location
Straubing, Bayern, Germany
Employment Type
Permanent
Salary
EUR Annual
integration strategy and ensure the seamless integration, security, scalability, and coherence of our IT architecture. You will act as the ultimate authority on technical design across the enterprise, enabling a flexible, resilient, and future-proof technology stack that supports a wide range of business initiatives, from API-driven … frontends to internal process automation. Architectural Vision & Design Definition and maintenance of the end-to-end technical architecture for all commercial and enterprise systems Design of the central integration strategy and layer (API Gateway, microservices) ensuring seamless data flow between CRM, PIM, PLM, ERP, and consuming applications ...

Software Engineer / Developer (All Levels) - UK Wide

Hiring Organisation
describe.me
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £140,000 per annum
Full Stack positions—for upcoming roles across backend, frontend, full-stack, platform and product engineering. These are hands-on roles where you'll design, build and ship production software that real users depend on. You'll work across the full engineering lifecycle—from technical design and implementation through … software fundamentals with genuine curiosity about the product they're building and the users they're building it for. Key Responsibilities Partner with product, design and stakeholders to scope features and translate them into technical work Design, build and ship production-grade services, APIs, web applications and supporting ...

Principal Platform Engineer

Hiring Organisation
Jobleads-UK
Location
Sunbury-on-Thames, England, United Kingdom
target architecture, and a credible transition path — enabling bp's engineering platforms and SaaS solutions to operate as an integrated whole. Lead architectural design and decision-making at the intersection of internal platforms and enterprise SaaS, establishing integration patterns, data contracts, and governance standards that apply consistently across … platform estate. Act as the principal technical authority for platform engineering across the digital delivery organisation, providing expert guidance on platform design, cloud-native patterns, and systems integration to engineering teams and senior stakeholders. Drive resolution of complex cross-platform integration challenges, including identity, data flow, event-driven architecture ...

Technical Lead

Hiring Organisation
XCEEDANCE LIMITED
Location
London Area, United Kingdom
2+ years leading engineering teams or owning technical delivery Engagement Model: Full-time, Product Engineering Job Responsibilities Own the high-level and low-level design of services on the BPA platform — define service boundaries, integration contracts, data models, and non-functional requirements. Lead architecture and design reviews … enforce engineering standards for code quality, security, performance, and testability across the team. Design and implement RESTful APIs and microservices using Java 17+ and Spring Boot 3.x — this is a hands-on role; expect to spend meaningful time in the codebase on the hardest problems. Drive resilience and scalability ...