10 of 10 Contract API Integration Jobs in the South East

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
deployment, and prompt engineering Agentic workflow development, ideally using AWS AgentCore Multi-agent orchestration frameworks such as AWS Strands Agents, LangGraph, or similar LLM integration and fine-tuning (Claude, GPT-4, or equivalent) Strong prompt engineering skills, including chain-of-thought reasoning RAG & Knowledge Systems Implementation of Retrieval-Augmented … Experience with vector databases such as CockroachDB, Pinecone, or similar 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 ...

AI Engineer

Hiring Organisation
KBC Technologies UK LTD
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
years of total IT experience. Hands-on experience with production-grade AI/ML projects, including at least two successful deployments. Strong expertise in: API integration & inter-service communication (REST, Kafka) Authentication/Authorization (OAuth2, JWT, Azure AD) NLP techniques (NER, classification, chunking, summarization, QA) RAG architectures ...

Payment Architect

Hiring Organisation
Stackstudio Digital Ltd
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Contract
should not exclude otherwise strong candidates: Knowledge of BIAN, TOGAF, ArchiMate or C4. Experience with Avolution Abacus or similar architecture tools. Familiarity with microservices, API integration patterns and cloud concepts such as AWS. Exposure to global banking environments or large scale payment transformations. ...

Payment Architect

Hiring Organisation
Stackstudio Digital Ltd
Location
Luton, Bedfordshire, South East, United Kingdom
Employment Type
Contract
should not exclude otherwise strong candidates: Knowledge of BIAN, TOGAF, ArchiMate or C4. Experience with Avolution Abacus or similar architecture tools. Familiarity with microservices, API integration patterns and cloud concepts such as AWS. Exposure to global banking environments or large scale payment transformations. ...

Payment Architect

Hiring Organisation
Stackstudio Digital Ltd
Location
Watford, Hertfordshire, South East, United Kingdom
Employment Type
Contract
should not exclude otherwise strong candidates: Knowledge of BIAN, TOGAF, ArchiMate or C4. Experience with Avolution Abacus or similar architecture tools. Familiarity with microservices, API integration patterns and cloud concepts such as AWS. Exposure to global banking environments or large scale payment transformations. ...

AI Product Manager - Start Up Experience

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £650 per day
Familiarity with tools like Trulens, HumanLoop, PromptLayer, or similar; experience designing QA approaches for GenAI environments. Knowledge of modern AI architectures (RAG pipelines, embeddings, API integrations such as OpenAI, Azure OpenAI, Anthropic). Experience designing and implementing structured test regimes in fast-evolving contexts. Excellent communication and facilitation skills ...

Data Engineer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
Harmondsworth, West Drayton, Middlesex, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
security across systems. Collaborate with Data Scientists and Analysts to enable advanced analytics. Implement best practices for scalability and performance in cloud environments. Support integration of MRO AI Solutions into business operational workflows. Design data architecture and pipelines that support multi-OpCo deployment, ensuring modularity and interoperability. Required Skills … Experience Expertise in Python, SQL, and modern ETL frameworks. Hands-on experience with cloud platforms (AWS preferred). Strong knowledge of data modelling and API integration. Proven experience in developing, testing, and deploying data solutions into production environments, ensuring reliability, scalability, and maintainability beyond proof-of-concept or prototype ...

Salesforce Tech Lead

Hiring Organisation
Queen Square Recruitment Ltd
Location
Windsor, Royal Borough of Windsor and Maidenhead, Berkshire, United Kingdom
Employment Type
Contract
Contract Rate
£450/day
meeting acceptance criteria. Conduct technical spikes and research into emerging technologies. Perform code reviews and uphold development standards. Collaborate with cross-functional teams on API integrations. Work closely with QA to troubleshoot and resolve issues. Mentor junior developers and support their growth. Required Skills & Experience: 10+ years of overall … Salesforce development (declarative + programmatic). Strong experience with Sales Cloud and Service Cloud. Experience Cloud knowledge. Advantageous: Salesforce Industries (Vlocity) – Omniscripts, EPC, Integration Procedures. Familiarity with Git or equivalent version control tools. Strong background in Agile/SCRUM delivery. Excellent communication, problem-solving, and stakeholder-management skills. Ability ...

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
frontend teams to deliver cohesive solutions across technologies. Implement best practices for scalability, performance, resilience, and security in cloud environments (AWS preferred). Support integration of AI solutions into operational workflows. Define technical standards and frameworks to enable multi-OpCo deployment and interoperability. Translate business and operational requirements into … expertise across programming languages, tools, and modern engineering stacks. Strong experience designing and building cloud-based systems (AWS preferred). Deep knowledge of API design and integration. Proven track record delivering high-value platforms within large, complex enterprise organisations. Demonstrated experience taking data and AI solutions from design through ...

Lead Technical Business Analyst

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
London Market Insurers Advise stakeholders on best practices for system decommissioning and data transition strategies. Define and manage requirements for APIs, data models, and integration points. Collaborate with engineering teams to validate technical feasibility and ensure alignment with business objectives. Develop and maintain detailed documentation for data mapping, transformation … mitigate risks associated with migration and system cutover. Core Skills & Experience: Proven expertise in PAS systems and complex data migration projects. Strong knowledge of API design and integration . Advanced data modelling skills for structured and semi-structured data. Proficiency in XML, JSON, and Excel for data handling ...