10 of 10 Contract API Design Jobs in London

Mulesoft Developer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£470 - £520/day
Project Manager, architects, clients & other stakeholders to implement MuleSoft APIs. This role will require knowledge of MuleSoft's Anypoint Studio & Anypoint Platform, which includes Design Center, Runtime Manager, API Manager, Exchange, etc. You must be capable of understanding business requirements, working with stakeholders & implementing complex integrations. Responsibilities: Designing … stakeholders to understand business requirements & translate them into integration solutions. Required Skills: Good experience of: Integration concepts & technologies. MuleSoft Anypoint Platform & components (Mule ESB, API Manager, CloudHub, etc.) Java programming & experience with other programming languages such as XML, JSON, SQL Agile software development methodologies. Cloud-based integration platforms such ...

AI UX Engineer - £350PD - Remote

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£300 - £350 per day
Embedding model optimisation and semantic search Context window management and chunking strategies MCP & Tool Integration Model Context Protocol (MCP) implementation LLM tool calling and API design AWS Lambda integration with agents AI Safety & Evaluation Guardrail implementation (hallucination detection, toxicity filtering) Response evaluation frameworks and A/B testing … Advanced Python AWS SDK (boto3) Infrastructure as Code awareness (CloudFormation/Terraform) Git and CI/CD for ML systems UX Engineer - Skills & Requirements Design & Prototyping Advanced Figma skills Wireframing, interactive prototyping, and design systems Responsive web and mobile design Conversational UX Chatbot and conversational interface design ...

AI UX Engineer - £350PD - Remote

Hiring Organisation
Tenth Revolution Group
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£300 - £350/day
Embedding model optimisation and semantic search Context window management and chunking strategies MCP & Tool Integration Model Context Protocol (MCP) implementation LLM tool calling and API design AWS Lambda integration with agents AI Safety & Evaluation Guardrail implementation (hallucination detection, toxicity filtering) Response evaluation frameworks and A/B testing … Advanced Python AWS SDK (boto3) Infrastructure as Code awareness (CloudFormation/Terraform) Git and CI/CD for ML systems UX Engineer - Skills & Requirements Design & Prototyping Advanced Figma skills Wireframing, interactive prototyping, and design systems Responsive web and mobile design Conversational UX Chatbot and conversational interface design ...

Cloud Platform Engineering Lead / DevOps Lead

Hiring Organisation
KBC Technologies UK LTD
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
Hybrid Employer: Global Technology Consultancy Mandatory Skill: Google Kubernetes Engine (GKE) Role Purpose We are seeking a hands-on Cloud Platform Engineering Lead to design, build and operate secure, automated cloud platform capabilities. You will enable product teams to deliver API-first services rapidly and reliably, while balancing … deep technical work with coaching and engineering leadership. Key Responsibilities Design, build, and operate platform capabilities using Infrastructure-as-Code and modern CI/CD . Embed secure-by-design principles from architecture to runtime. Define and manage SLOs/SLIs ; drive observability, performance tuning, and automation. Promote ...

Full-Stack Software Developer

Hiring Organisation
Sanderson Government and Defence
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £520 per day
/17+) Deep Spring Boot & microservices experience Strong AWS skills (EC2, S3, Lambda, IAM) Kafka/event-driven systems SQL optimisation REST/JSON API design Docker proficiency Excellent communication skills Nice to Have JavaScript/React Aurora/RDS If you're proactive, outcomes-driven, and thrive ...

Full-Stack Software Developer

Hiring Organisation
Sanderson
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£520 per day
/17+) Deep Spring Boot & microservices experience Strong AWS skills (EC2, S3, Lambda, IAM) Kafka/event-driven systems SQL optimisation REST/JSON API design Docker proficiency Excellent communication skills Nice to Have JavaScript/React Aurora/RDS If you're proactive, outcomes-driven, and thrive ...

Senior Software Engineer

Hiring Organisation
Prorec Solution Ltd
Location
London, United Kingdom
Employment Type
Contract, Work From Home
engage a Senior Software Engineer on a contract basis. This is a hands-on engineering role with a strong emphasis on technical architecture, solution design, and full-stack development. Youll be working within a dynamic, cross-functional team helping to build and evolve scalable enterprise applications used in complex … environments. Key Requirements Proven experience in technical architecture and designing scalable solutions Strong Java and Spring Boot backend development expertise Solid understanding of RESTful API design and integration Experience with ReactJS for frontend development Strong knowledge of SQL and database design Previous experience working in finance ...

Technical Architect - SC Cleared

Hiring Organisation
LA International Computer Consultants Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Daily
digital or enterprise environments. * Strong software engineering foundation, with practical knowledge of modern application architectures (eg, microservices, APIs, distributed systems). * Proven ability to design and document architectures using visual modelling techniques such as C4, UML, and data flow diagrams. * Hands-on experience with at least one major cloud … provider, ideally AWS, including Infrastructure as Code, platform services, networking, and security controls. * Deep understanding of secure and resilient system design, including authentication patterns, threat modelling, performance considerations, and observability. * Familiarity with Ruby, Python, or Java, and modern development practices such as CI/CD, TDD, and containerisation. * Experience ...

Principal Engineer - AI & Data Platforms

Hiring Organisation
ARM
Location
Hounslow, London, Heathrow Villages, United Kingdom
Employment Type
Contract
international organisation in the aviation sector is seeking a Principal Engineer to lead the design and delivery of enterprise-scale engineering solutions supporting AI-driven platforms. This is a senior, hands-on role embedded within a major airline environment, with responsibility for setting technical direction and ensuring solutions scale … role requires consultancy-level technical depth, strong delivery discipline, and the ability to translate complex operational needs into scalable, enterprise-ready solutions. Key Responsibilities Design and own architecture across all layers of the technology stack. Write production-grade code and deliver enterprise-ready solutions at pace. Engineer scalable, modular ...

Principal Engineer - AI & Data Platforms

Hiring Organisation
Advanced Resource Managers Limited
Location
London Heathrow Airport, Hounslow, Middlesex, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
international organisation in the aviation sector is seeking a Principal Engineer to lead the design and delivery of enterprise-scale engineering solutions supporting AI-driven platforms. This is a senior, hands-on role embedded within a major airline environment, with responsibility for setting technical direction and ensuring solutions scale … role requires consultancy-level technical depth, strong delivery discipline, and the ability to translate complex operational needs into scalable, enterprise-ready solutions. Key Responsibilities Design and own architecture across all layers of the technology stack. Write production-grade code and deliver enterprise-ready solutions at pace. Engineer scalable, modular ...