1 to 25 of 31 Contract API Integration Jobs in the UK

AI Automation Engineer

Hiring Organisation
McCabe & Barton
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £700 per day
classification, regression, clustering, and NLP tasks. Understanding of model evaluation metrics, hyperparameter tuning, feature engineering, and MLOps practices for production deployment. Generative AI & LLM Integration - Proficient in working with Large Language Models including OpenAI GPT models, Anthropic Claude, Azure OpenAI, and open-source alternatives (Llama, Mistral). Experience with … automation solutions that leverage natural language understanding. Appian BPA Platform - Strong experience with Appian low-code platform including process modelling, interface design, expression rules, integration objects, and data modelling. Skilled in building end-to-end business process applications, configuring workflows, implementing business rules, managing records, and integrating Appian with ...

Full Stack Developer

Hiring Organisation
Stott & May Professional Search Limited
Location
Warwickshire, West Midlands, United Kingdom
Employment Type
Contract
Contract Rate
£460 - £510 per day
contributing to technical strategy and best practice within an Agile environment. Key Responsibilities Design, develop, verify, test, document and refactor complex applications, scripts and integration services Participate in and lead peer code reviews to ensure quality and adherence to standards Select and apply appropriate development methods, tools and techniques … Agile ceremonies and contribute to team culture and delivery excellence Your Profile Essential Skills & Experience Front-End Development: React (including Hooks) SWR for REST API integration Next.js Styled Components HTML, Modern JavaScript & CSS Jest Back-End Development: C# ASP.NET Core (v8+) Entity Framework Core (v8+) xUnit SQL Desirable ...

L3 Support Engineer Dot Net

Hiring Organisation
Stackstudio Digital Ltd
Location
Livingston, West Lothian, Scotland, United Kingdom
Employment Type
Contract
Contract Rate
From £450 to £500 per day
application lifecycle Proficiency with T-SQL and DocumentDB Swift and Kotlin knowledge Advanced SQL troubleshooting and tuning; data-model fluency for application triage REST API integration and debugging Scripting (PowerShell/Shell) for automation and health-check/reporting Observability/SRE: alert tuning, performance and capacity analysis … adherence; clear incident communication and RCA Operations: daily/shift health checks, exception queues, dashboards, runbooks, KEDB Triage and recovery: application errors, data mismatches, API failures, safe reprocessing Change management: UAT, release notes, SOP/runbook updates; regression mindset RCA & systemic improvements: resolve repeat failures, drive optimization, and process ...

AI Engineer

Hiring Organisation
Certain Advantage
Location
South East London, London, United Kingdom
Employment Type
Contract
Central London during the week. We are seeking Engineers skilled in python with a strong focus on GenAI AI and LLMs to lead the integration of cutting-edge language technologies into real-world applications. If youre someone passionate about building scalable, responsible, and high-impact GenAI solutions then this … help make your application as relevant as possible, please ensure your CV demonstrates any prior experience you have relating to the below; System Integration & Deployment Model Deployment: Flask, FastAPI, MLflow Model Serving: Triton Inference Server, Hugging Face Inference Endpoints API Integration: OpenAI, Anthropic, Cohere, Mistral APIs ...

Salesforce Developer

Hiring Organisation
WRK DIGITAL LTD
Location
Leeds, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
£475 per day
Visualforce . Hands-on experience with Salesforce configuration and customisation. Strong understanding of Salesforce data model, security, and sharing rules. Experience with API integrations and middleware tools. Familiarity with Salesforce DX, CI/CD, and deployment best practice. Excellent problem-solving skills and ability to work in an agile ...

Project Manager (eCommerce)

Hiring Organisation
eir evo talent
Location
Rugby, Warwickshire, West Midlands, United Kingdom
Employment Type
Contract, Work From Home
Responsibilities Define Project Scope & Objectives Collaborate with Heads of IT and business stakeholders to establish clear project goals for commerce platform deployment and ERP integration, ensuring technical feasibility and alignment with business needs. Plan & Deliver Integration Projects Develop detailed project plans for end-to-end delivery, covering phases … Engagement Build strong relationships with technology partners and maintain clear communication with business owners throughout the project lifecycle. Documentation & Compliance Maintain comprehensive documentation for integration architecture, workflows, and project governance. Requirements & Skills Experience : 5+ years in IT Project Management with a focus on system integration projects , preferably involving ...

Lead Full-Stack Developer

Hiring Organisation
Experis
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £650 per day
services in cloud environments (AWS, Azure or GCP) Use containerisation tools such as Docker Quality & Collaboration Lead and participate in code reviews Write unit, integration and end-to-end tests (JUnit, Testcontainers, Vitest, Storybook) Maintain clear technical documentation Work closely with product, architecture and delivery teams Embed security best … Commercial expertise in Java plus at least one other back-end language (ideally Python) Solid experience with React and modern front-end tooling Strong API design and integration experience Good working knowledge of Linux and Windows environments Proven problem-solver with strong analytical skills Experience with relational databases ...

Lead Data Engineer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
development and orchestration. Proficient with cloud platforms (Snowflake, AWS fundamentals). Solid understanding of data architecture, warehousing, and modeling. Programming expertise: Python, Spark, SQL, API integration. Knowledge of ML/AI frameworks, MLOps, and advanced analytics concepts. Experience with CI/CD, data testing frameworks, and versioning strategies. Ability ...

Infrastructure Engineer / VMware Consultant

Hiring Organisation
Robert Half
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
Must have: Deep hands-on experience with vRA 8 and vRealize Orchestrator development Strong PowerShell skills Extensive experience with VMware Aria Operations & Logs REST API integration and automation experience Should have: VMware Cloud Foundation (VCF/VCFA) knowledge Python development experience Broad VMware full stack expertise Nice ...

Network Engineer

Hiring Organisation
VANLOQ LIMITED
Location
Edinburgh, Midlothian, Scotland, United Kingdom
Employment Type
Contract, Work From Home
network protocols including TCP/IP, UDP, and DNS. Automation and Scripting: Familiarity with automation and scripting languages (shell, Ansible, VBA, Python, JavaScript, JSON, API integration or development) is advantageous but not mandatory. Agile Experience: Experience working in an Agile team, participating in agile ceremonies, and a working ...

Newtork Engineer

Hiring Organisation
VANLOQ LIMITED
Location
Sheffield, South Yorkshire, Yorkshire, United Kingdom
Employment Type
Contract, Work From Home
network protocols including TCP/IP, UDP, and DNS. Automation and Scripting: Familiarity with automation and scripting languages (shell, Ansible, VBA, Python, JavaScript, JSON, API integration or development) is advantageous but not mandatory. Agile Experience: Experience working in an Agile team, participating in agile ceremonies, and a working ...

Payments Solution Architect

Hiring Organisation
Stackstudio Digital Ltd
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
From £550 to £600 per day
initiative. Desirable (Not Mandatory) 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. What We Do Not Want … Channel, mobile, front-end, or API-only specialists with limited understanding of the execution layer. Engineers or developers without architecture experience at scale. Payments product owners without hands-on architecture or design experience. People whose payments experience is limited to card issuing or eCommerce gateways without knowledge of core ...

Technical Solutions Architect

Hiring Organisation
Hays
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600.0 - £640.0 per day + up to £640pd (Inside IR35)
Technical Solutions Architect - Azure, API, Finance/Pensions Up to £640 per day (Inside IR35) London/Remote 6 months My client is an instantly recognisable consultancy who are looking for a Technical Solutions Architect to define and align high-level design requirements for an end client. Key Requirements … core foundation technologies. Ability to manage high-level (HLD) and low-level (LLD) design processes with full traceability. Knowledge of Enterprise Architecture principles, API integration, and digital strategy alignment. Excellent stakeholder management, facilitation, and conflict resolution skills. Familiarity with technical risk analysis, governance processes, and compliance standards. Strong ...

Python Developer

Hiring Organisation
Cactus IT Solution
Location
Edinburgh, City of Edinburgh, United Kingdom
Employment Type
Contract
Strong Python , Strong React & type script, API integration, Agile, BE troubleshoot, moderate skills in ORM, Agent Frameworks ...

Python Frontend Developer

Hiring Organisation
Adroit People Ltd
Location
Edinburgh, Midlothian, Scotland, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £400 to £450 per day
Python Frontend Developer Edinburgh, UK(2 days a week onsite & 3 days a week remote) Contract Job Description : Strong Python , Strong React & type script, API integration, Agile, BE troubleshoot, moderate skills in ORM, Agent Frameworks ...

IT Engineer - Rubrik Backup and Hybrid Cloud Protection

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600/day
infrastructure. * Experience protecting Azure and Office 365 workloads through Rubrik. * Strong troubleshooting ability and governance understanding. Desirable Skills * Experience with other enterprise backup suites. * API integration exposure. * Disaster recovery planning. Professional Attributes * Methodical and governed by best practice. * Confident decision maker. * High accountability. * Strong interpersonal skills. ...

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. ...

Payment Architect

Hiring Organisation
Stackstudio Digital Ltd
Location
Northampton, Northamptonshire, East Midlands, 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. ...

SC Cleared AWS DevOps Engineer

Hiring Organisation
ECS Resource Group Ltd
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£370 - £375/day
support CI/CD pipelines using GitLab Ensure infrastructure is secure, scalable, and reliable Monitor systems and applications, addressing performance and availability issues Support API integrations and deployments Strong experience with: Terraform AWS GitLab Active SC Clearance (essential, candidates without this will not be considered) Additional experience with ...

Senior Developer - Contract

Hiring Organisation
Nigel Wright Group
Location
Newcastle Upon Tyne, Tyne and Wear, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 per day
system and need additional expertise to get this integrated and developed. Highly skilled in Python development is a most and an expert in API integrations with strong mentoring skills. This role will require you to be onside in Newcastle 2-3 days per week and will be outside … IR35. May be a bit of flex on day rate depending on experience. Essential for the role Integration development and API engineering Strong experience working with third-party APIs Deep knowledge of REST, SOAP and API architectural patterns Significant experience with Python and .NET/C# Strong ...

Workday Project Manager

Hiring Organisation
Context Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£650 - £700 per day
Workday implementation project Work closely with HR and tech teams to implement multiple Workday modules Oversee integrations with COINS and Kronos/UKG (API integration experience essential) Ensure process mapping is clear, accurate and supports a complex rollout Act as the main point of contact for 3rd party … project on track and delivering outcomes Requirements: Proven experience managing Workday implementations Strong process mapping and project management skills Hands-on experience with Workday API integrations Solid, confident personality with excellent clarity in communication 4 days per week onsite (Central London)/1 day WFH. Working hours ...

Integration Engineer

Hiring Organisation
Chroma Recruitment Ltd
Location
Manchester, North West, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £450 per day
Integration Engineer Outside IR35 12 months Remote (occasional travel to London/Manchester office) £400-450 per day Start asap Chroma is currently working with a prominent high street retailer who is looking for an Integration Engineer to join their team, this is an excellent opportunity for someone … involved in the middle of an exciting tech transformation! As an Integration Engineer, youll play a key part in helping the team work faster and smarter. You will play a key role in migrating approximately 50 APIs from MuleSoft to Azure, ensuring a smooth transition with minimal disruption. ...