Contract API Integration Jobs in the UK

1 to 25 of 37 Contract API Integration Jobs in the UK

API Integration Specialist

Oxfordshire, South East, United Kingdom
Halian Technology Limited
Halian Technology are searching for an Interim API Integrations Specialist to join our client's forward-thinking technology team. Our client is a dynamic and rapidly growing energy supplier based in Oxfordshire, committed to driving business success through smart, reliable energy solutions. Our client challenges the existing marketplace with a tech-driven, customer-focused approach and foster a culture … delivering high-quality solutions, and want to work in a company where your expertise is valued and supportedthis is the role for you. Key Responsibilities: Design, develop, and maintain API integrations between internal systems and external SaaS platforms. Collaborate with product, data, and engineering teams to identify integration requirements and deliver robust solutions. Monitor and troubleshoot integration workflows, ensuring data consistency across platforms. Translate business requirements into technical specifications for system connectivity. Build and maintain API documentation, providing guidance on integration best practices. Ensure all integrations meet compliance, security, and performance standards. Work closely with SaaS vendors and partners to coordinate technical efforts. Key Requirements: Essential: Strong expertise in digital engineering, CMS design and More ❯
Employment Type: Contract
Rate: From £500 to £525 per day
Posted:

Solutions Architect

Bristol, Avon, South West, United Kingdom
Morson Talent
The Solutions Architect should have solid knowledge and experience in the disciplines involved in full lifecycle software and systems Engineering. In particular, you should have good experience in systems integration, with a strong emphasis on software-led integration, API design and implementation, and secure interoperability, alongside basic networking skills. What you will do: The Solutions Architect will … more areas below will be advantageous: • Defining and maintenance of architectural principles, patterns and frameworks • Ensuring adherence to technical and security standards and identifying corrective action • Advanced software architecture, API integration, and design for scalability • Leadership in software-led systems integration, including cross-domain interoperability • Formal methods for analysis and design • Dynamically scaled containerisation such as those More ❯
Employment Type: Contract
Posted:

System Design Authority

Bristol, Gloucestershire, United Kingdom
Hybrid / WFH Options
Matchtech
for: The SDA should have solid knowledge and experience in the disciplines involved in full lifecycle software and systems Engineering. In particular, they should have good experience in systems integration, with a strong emphasis on software-led integration, API design and implementation, and secure interoperability, alongside basic networking skills. The successful candidate will have an outstanding range … more areas below will be advantageous. Defining and maintenance of architectural principles, patterns and frameworks Ensuring adherence to technical and security standards and identifying corrective action Advanced software architecture, API integration, and design for scalability Leadership in software-led systems integration, including cross-domain interoperability Formal methods for analysis and design Dynamically scaled containerisation such as those More ❯
Employment Type: Contract
Rate: GBP 119 Hourly
Posted:

Solutions Architect

Bristol, United Kingdom
ARM
including design reviews, verification, and qualification activities, will also lie with the Client. Ensuring adherence to technical and security standards and identifying corrective action Leadership in software-led systems integration, including cross-domain interoperability Dynamically scaled containerisation such as those managed by Kubernetes Architectures for sharing databases between processes & locking strategies Linux platforms such as RHEL and/or … Systems IT Networking Secure by Design principles Formal methods for analysis and design System Administrator experience including patch management, monitoring e.g. SCOM, mitigating security vulnerabilities. Proven track record in API design, integration and interoperability between complex systems Design and implementation of CI/CD pipelines, with embedded DevSecOps practices Advanced software architecture, API integration, and design … for scalability Able to demonstrate experience in all areas of the software lifecycle from requirements definition through to integration and delivery Experience in the use of NVIDIA for image processing Disclaimer: This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource Managers Engineering Limited ("ARM"). ARM is a specialist More ❯
Employment Type: Contract
Posted:

Solutions Architect

Bristol, Gloucestershire, United Kingdom
ARM
including design reviews, verification, and qualification activities, will also lie with the Client. Ensuring adherence to technical and security standards and identifying corrective action Leadership in software-led systems integration, including cross-domain interoperability Dynamically scaled containerisation such as those managed by Kubernetes Architectures for sharing databases between processes & locking strategies Linux platforms such as RHEL and/or … Systems IT Networking Secure by Design principles Formal methods for analysis and design System Administrator experience including patch management, monitoring e.g. SCOM, mitigating security vulnerabilities. Proven track record in API design, integration and interoperability between complex systems Design and implementation of CI/CD pipelines, with embedded DevSecOps practices Advanced software architecture, API integration, and design … for scalability Able to demonstrate experience in all areas of the software lifecycle from requirements definition through to integration and delivery Experience in the use of NVIDIA for image processing Disclaimer: This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource Managers Engineering Limited ("ARM"). ARM is a specialist More ❯
Employment Type: Contract
Rate: GBP Annual
Posted:

Solutions Architect

Bristol, Avon, England, United Kingdom
Advanced Resource Managers Limited
including design reviews, verification, and qualification activities, will also lie with the Client. Ensuring adherence to technical and security standards and identifying corrective action Leadership in software-led systems integration, including cross-domain interoperability Dynamically scaled containerisation such as those managed by Kubernetes Architectures for sharing databases between processes & locking strategies Linux platforms such as RHEL and/or … Systems IT Networking Secure by Design principles Formal methods for analysis and design System Administrator experience including patch management, monitoring e.g. SCOM, mitigating security vulnerabilities. Proven track record in API design, integration and interoperability between complex systems Design and implementation of CI/CD pipelines, with embedded DevSecOps practices Advanced software architecture, API integration, and design … for scalability Able to demonstrate experience in all areas of the software lifecycle from requirements definition through to integration and delivery Experience in the use of NVIDIA for image processing Disclaimer: This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource Managers Engineering Limited ("ARM"). ARM is a specialist More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

IT Developer

United Kingdom
Randstad Digital
Lead the design, development, testing, and deployment of enterprise applications using Microsoft technologies. Build secure, compliant banking and fintech solutions. Develop iOS applications (Swift or Objective-C) with RESTful API integrations. Integrate AI/ML components, including NLP or recommendation systems, into projects. Collaborate with stakeholders to ensure solutions meet business and technical requirements. Required Skills: Hands-on experience More ❯
Employment Type: Contract
Posted:

Integration Specialist

Ipswich, Suffolk, East Anglia, United Kingdom
Flint Technology Services
AI Integration Specialist - Level 1 Location: Ipswich (Three days onsite, two days remote) About the Role: We are seeking a talented AI Integration Specialist to help bring advanced AI capabilities into production systems and enterprise platforms. In this role, you will collaborate closely with engineers, data scientists, and product managers to design, deploy, and integrate AI-powered features … into business applications. The ideal candidate combines technical expertise in software integration with a strong understanding of AI/ML deployment workflows and API-based architectures. Key Responsibilities: Collaborate with engineering and product teams to define requirements, scope, and technical design for AI-driven features. Deploy machine learning models into production environments, ensuring scalability, performance, and reliability. Transform … ML models into APIs and integrate them into existing enterprise systems and workflows. Work with DevOps and Back End engineers to optimize model deployment pipelines and ensure smooth integration with microservices and cloud infrastructures. Monitor model performance post-deployment and assist in updates or retraining workflows. Document integration processes, APIs, and deployment architectures for cross-team knowledge sharing. More ❯
Employment Type: Contract
Posted:

ServiceNow Developer

City of London, London, United Kingdom
Access Computer Consulting
modules like ITSM, ITOM, HRSD, CSM, and CMDB. ServiceNow Scripting: Client Scripts, Business Rules, Script Includes, UI Policies, and UI Actions is also required. Experience of REST/SOAP API Integration: Building and consuming APIs for third-party integrations. Knowledge of ServiceNow Workflows: Designing and implementing Flow Designer and legacy Workflow Editor and Service Portal Development: Custom widgets More ❯
Employment Type: Contract
Rate: £600 - £700/day
Posted:

SuiteCRM Developer

Coventry, West Midlands, West Midlands (County), United Kingdom
CBSbutler Holdings Limited trading as CBSbutler
and plug-ins in SuiteCRM to meet business requirements. Implement new features and maintain existing functionality with a focus on performance and scalability. Create and manage REST/SOAP API integrations with third-party systems. Collaborate with cross-functional teams (e.g., business analysts, QA, UI/UX designers) to translate requirements into technical solutions. Troubleshoot and resolve technical issues More ❯
Employment Type: Contract
Rate: £425 - £500/day
Posted:

Salesforce Revenue Cloud Developer

North West London, London, United Kingdom
Hybrid / WFH Options
167 Solutions Ltd
automation is scalable and resilient. Act as a technical architect on projects, advising stakeholders on Salesforce best practice and system design. Deliver and document end-to-end solution architecture , integration patterns, and technical specifications. Collaborate with cross-functional teams to ensure seamless integrations with external systems (ERP, finance, payment gateways, middleware). Conduct code reviews, troubleshoot technical issues, and … development, and Salesforce automation tools. Strong understanding of Salesforce architecture principles and ability to design scalable multi-cloud solutions. Solid background in Apex, LWC, SOQL, and REST/SOAP API integration . Experience integrating Salesforce with ERP, billing, or financial systems. Knowledge of data modelling, governance, and deployment processes (DevOps, Git, CI/CD pipelines) . Excellent stakeholder … e.g., Salesforce Revenue Cloud Consultant, Application Architect, System Architect, or Technical Architect ). Previous contract experience within telecoms, fintech, SaaS, or enterprise transformation projects . Familiarity with Middleware/Integration platforms (MuleSoft, Dell Boomi, etc.). This role is fully remote within the UK. Unfortunately, we cannot provide visa sponsorship, so applicants must have the right to work in More ❯
Employment Type: Contract, Work From Home
Rate: From £400 to £600 per day
Posted:

Backend Software Engineer - GenAI

London, South East, England, United Kingdom
Harnham - Data & Analytics Recruitment
They're looking for a Backend Software Engineer to help design and develop backend systems supporting large-scale LLM and GenAI workloads. The role will focus on backend architecture, API integration, and automation across data and compute pipelines. What you'll be doing: Build and maintain Python backend systems for GenAI evaluation Integrate LLM components with data and … FastAPI, Cloud (GCP/AWS), CI/CD, Git/GitHub, automated testing, DevOps fundamentals Ideal for: Engineers with a strong backend foundation and hands-on GenAI or LLM integration experience looking to contribute to applied AI in healthcare. More ❯
Employment Type: Contractor
Rate: £33,600 - £38,400 per annum
Posted:

Lead Project Engineer

Bristol, Avon, South West, United Kingdom
Response Informatics
oversight across engineering disciplines being delivered by another supplier. Support the programme Chief Engineer in developing the required standards and governance for the programme Work closely with the programme integration office Chief Architect and Engineer to support the creation of standards and governance structures for the ISTAR portfolio and the programme. Support and lead the design, integration, and … and internal Defence Digital and Army teams, senior stakeholders, and external partners. Support the development of the software factory roadmap and development requirements for current and future contracts, and integration into other DD Service Executive capabilities Oversee the documentation of engineering processes, designs, and outcomes for audit and review purposes. Manage Risk by identifying and mitigating engineering risks, ensuring … applications and integrations Proficiency in cloud architectures, cybersecurity, software development methodologies, and system integration. Understanding of on-premise and deployable technologies. Deep knowledge of systems engineering, software development, hardware integration, and testing methodologies. Understanding of ISR or ISTAR capabilities advantageous Proficiency in engineering tools and technologies relevant to Defence Digital projects. Understanding of integrated sensor architecture (ISA) advantageous Deep More ❯
Employment Type: Contract
Posted:

Perl Software Engineer

Watford, Hertfordshire, England, United Kingdom
Pontoon
code and collaborating in an agile environment. What you'll be doing: Designing, coding, and delivering well-structured, performant solutions primarily in Perl Working with Oracle databases, APIs, and integration layers Supporting agile ceremonies and collaborating with cross-functional teams Producing automated unit and integration tests Building relationships with stakeholders and ensuring technical solutions meet business needs Supporting … recent experience with Perl programming (essential) Additional knowledge of JavaScript and modern frameworks is advantageous Experience with architectural design patterns Agile delivery experience Oracle database design and development expertise API integration experience Git/version control proficiency Excellent communication and collaboration skills Why join? This is an exciting chance to work for a business at the forefront of More ❯
Employment Type: Contractor
Rate: £675 per day
Posted:

Data Engineer

Coventry, West Midlands, United Kingdom
Expleo Group
documentation for data architecture, workflows, and processes Troubleshoot and resolve data-related issues, ensuring minimal disruption to service operations Support automation of reporting and data delivery Design and implement API integrations to integrate data . Qualifications and skills required for the Data Engineer position: Ideally degree educated in Computer Science, Data Engineering, or a related field Experience as a More ❯
Employment Type: Contract
Posted:

SunSystems Consultant

City of London, London, United Kingdom
James Joseph Associates Limited
latest cloud based versions of their other financial modelling, FP&A, Procurement & payment systems, Financial Systems consolidation and the opportunity to learn & execute code-based automation and/or API integrations between across different systems. This is a fantastic opportunity to join a an actively expanding blue chip Financial Services firm that is poised for further growth and can More ❯
Employment Type: Contract
Rate: From £650 to £850 per day
Posted:

API Integration Specialist

Oxfordshire, United Kingdom
Halian Technology Limited
Halian Technology are searching for an Interim API Integrations Specialist to join our client's forward-thinking technology team. Our client is a dynamic and rapidly growing energy supplier based in Oxfordshire, committed to driving business success through smart, reliable energy solutions click apply for full job details More ❯
Employment Type: Contract
Rate: GBP 500 - 525 Daily
Posted:

Genesys Cloud - Technical Architect

City, London, United Kingdom
Randstad Digital
Techincal Architect will have good solid experience of having work on Genesys Clould projects. The Technical Architect will have experience in; - Genesys Cloud - Genesys Engage - AI/Ml - CRM - API Integration - Java/Pyton Experience Technical Architect - click apply for full job details More ❯
Employment Type: Contract
Rate: GBP 600 - 700 Daily
Posted:

Genesys Cloud - Technical Architect

Central London, London, United Kingdom
Randstad Digital
Techincal Architect will have good solid experience of having work on Genesys Clould projects. The Technical Architect will have experience in; - Genesys Cloud - Genesys Engage - AI/Ml - CRM - API Integration - Java/Pyton Experience Technical Architect - Genesys Cloud - 6 Months - Inside IR35 Randstad Technologies is acting as an Employment Business in relation to this vacancy. More ❯
Employment Type: Contract
Rate: £600 - £700 per day
Posted:

Genesys Cloud - Technical Architect

City, London, United Kingdom
Randstad Technologies Recruitment
Techincal Architect will have good solid experience of having work on Genesys Clould projects. The Technical Architect will have experience in; - Genesys Cloud - Genesys Engage - AI/Ml - CRM - API Integration - Java/Pyton Experience Technical Architect - Genesys Cloud - 6 Months - Inside IR35 Randstad Technologies is acting as an Employment Business in relation to this vacancy. More ❯
Employment Type: Contract
Rate: GBP 600 - 700 Daily
Posted:

Genesys Cloud - Technical Architect

London, Farringdon Without, United Kingdom
Randstad Technologies Recruitment
Techincal Architect will have good solid experience of having work on Genesys Clould projects. The Technical Architect will have experience in; - Genesys Cloud - Genesys Engage - AI/Ml - CRM - API Integration - Java/Pyton Experience Technical Architect - Genesys Cloud - 6 Months - Inside IR35 Randstad Technologies is acting as an Employment Business in relation to this vacancy. More ❯
Employment Type: Contract
Rate: £600 - £700/day
Posted:

Data Analytics Engineer

London, South East, England, United Kingdom
Lorien
for someone who has: A strong engineering background and possibly BI experience. Solid proficiency in SQL and Python as core programming skills. Proven experience in building data pipelines, including API integrations. Knowledge of Power BI semantic models (focused on table modelling; visualisation skills not required for the role). Familiarity or hands-on experience with Google BigQuery, GCP services More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

Senior Android Developer

Leeds, West Yorkshire, Yorkshire, United Kingdom
Infoplus Technologies UK Ltd
Architectural Patterns, with a focus on Clean Architecture, which is frequently used in modern Android development. oExpertise in Dependency Injection frameworks. oStrong knowledge and working experience with Retrofit for API integration. oHands-on experience with Dagger for dependency management and scalable application development. 3.Experience Requirement We are looking for an experienced Android Developer with 710 years of expertise in More ❯
Employment Type: Contract
Rate: £400 per day
Posted:

Product Owner - FinTech

London, South East, England, United Kingdom
Hybrid / WFH Options
Morgan McKinley
product and platform. Oversee product releases and ensure features deliver on their intended outcomes. What we're looking for: A technical mindset, with experience in data-driven development and API integrations. Previous experience as a Product Owner (or similar - Business/Systems Analyst) in a consumer-facing product. Strong problem-solving skills and the ability to balance priorities in More ❯
Employment Type: Contractor
Rate: £500 - £550 per day
Posted:

Senior EUC Mac Support Engineer - Active SC required

South West London, London, United Kingdom
Skillsbay Limited
endpoint security, Zero Trust, access control, and vulnerability management. Demonstrable experience in large-scale projects such as hardware refreshes, migrations, or UEM deployments. Current SC clearance required. Desirable skills: API integration experience. Microsoft or VMware certifications. Familiarity with ISO 27001 environments. More ❯
Employment Type: Contract
Rate: £350 per day inside IR35
Posted:
API Integration
10th Percentile
£350
25th Percentile
£409
Median
£500
75th Percentile
£611
90th Percentile
£688