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2 Contract API jobs in Hemel Hempstead + 20 miles
Strong knowledge of data modeling and API integration.
Strong knowledge of data modeling and API integration.
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Experience with infrastructure-as-code, production-grade Linux environments, and API services (Flask/Gunicorn).
Experience with infrastructure-as-code, production-grade Linux environments, and API services (Flask/Gunicorn).
FEATURED
173 exact matches jobs are outside your preferred location
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Workplace Platform Engineer (DocuSign & 365 & API)
Workplace Platform Engineer (DocuSign & 365 & API)
Morson Edge
City of London, London, EC1A 1AA
Market related
We are seeking a Platform Engineer to join the Modern Workplace team at a leading banking client. This team is focused on delivering a flexible, efficient, and seamless digital workplace experience, enabling colleagues to collaborate and perform effectively using enterprise tools such as Microsoft 365 and DocuSign. The successful candidate will be a key contributor to the Productivity Applications portfolio, responsible for configuring, maintaining, and enhancing platforms that support a high-performing digital workplace. Key Responsibilities * Configure, develop, and maintain solutions across the Productivity Applications platform * Contribute to the design and implementation of new digital workplace capabilities * Manage the end-to-end lifecycle of platform solutions, ensuring continuous improvement * Support business-as-usual changes and incremental enhancements
We are seeking a Platform Engineer to join the Modern Workplace team at a leading banking client. This team is focused on delivering a flexible, efficient, and seamless digital workplace experience, enabling colleagues to collaborate and perform effectively using enterprise tools such as Microsoft 365 and DocuSign. The successful candidate will be a key contributor to the Productivity Applications portfolio, responsible for configuring, maintaining, and enhancing platforms that support a high-performing digital workplace. Key Responsibilities * Configure, develop, and maintain solutions across the Productivity Applications platform * Contribute to the design and implementation of new digital workplace capabilities * Manage the end-to-end lifecycle of platform solutions, ensuring continuous improvement * Support business-as-usual changes and incremental enhancements
PREMIUM
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Automation Engineer – Storage & Platform (Python / CI/CD / APIs)
Automation Engineer – Storage & Platform (Python / CI/CD / APIs)
Essential Consulting
South East London (SE1)
Unspecified Competitive Daily Rate - Inside IR35
Engineering API integrations between systems (REST APIs, authentication, error handling, retries, idempotency) * Hands-on experience with API integration and automation
Engineering API integrations between systems (REST APIs, authentication, error handling, retries, idempotency) * Hands-on experience with API integration and automation
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Contract .Net Developer – Insurance claims system
Contract .Net Developer – Insurance claims system
Hireful
Central London, London
£400 per day outside IR35
We’re looking for a proactive, self-sufficient developer with strong experience in .NET, API development, microservices architecture, and database integration.
We’re looking for a proactive, self-sufficient developer with strong experience in .NET, API development, microservices architecture, and database integration.
FEATURED
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Good understanding of API-led, integration-centric architectures and data-flow modelling * Experience with API gateways, middleware, or enterprise integration platforms
Good understanding of API-led, integration-centric architectures and data-flow modelling * Experience with API gateways, middleware, or enterprise integration platforms
PREMIUM
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Designing, building, testing, and deploying integration flows using SAP Integration Suite, with a focus on Cloud Integration (CPI), API Management, and Event Mesh. * Proven experience in designing and deploying integration flows within SAP BTP, especially CPI, API Management, and Event Mesh.
Designing, building, testing, and deploying integration flows using SAP Integration Suite, with a focus on Cloud Integration (CPI), API Management, and Event Mesh. * Proven experience in designing and deploying integration flows within SAP BTP, especially CPI, API Management, and Event Mesh.
FEATURED
Develop and maintain Python code for data processing, API development, and integration with the Azure Databricks environment.
Develop and maintain Python code for data processing, API development, and integration with the Azure Databricks environment.
FEATURED
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You will work across modern cloud-native architectures, contribute to API and microservices development, and help drive best practices across the engineering organisation. * Develop cloud-native solutions using AWS services such as Lambda, API Gateway, DynamoDB, ECS, S3, and others. * Hands-on experience with AWS cloud services (Lambda, API Gateway, DynamoDB, ECS, S3, etc.). * Solid understanding of RESTful API design and exposure to GraphQL.
You will work across modern cloud-native architectures, contribute to API and microservices development, and help drive best practices across the engineering organisation. * Develop cloud-native solutions using AWS services such as Lambda, API Gateway, DynamoDB, ECS, S3, and others. * Hands-on experience with AWS cloud services (Lambda, API Gateway, DynamoDB, ECS, S3, etc.). * Solid understanding of RESTful API design and exposure to GraphQL.
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Lead Integration Architect - 12 Months Contract Outside IR35 £600 to £650 a day - 3 days a week in Dartford Kent - A global powerhouse in the Infrastructure and Built Environment sector is urgently seeking a visionary Integration Architect to spearhead the connectivity for a multi-million-pound Digital Manufacturing Cloud (DMC) transformation. This isn't a maintenance role. You will own the entire integration architecture, acting as the master orchestrator for a complex ecosystem. You will ensure that high-level ERP and HR systems communicate perfectly with the precision-engineered data flows of PLM, MES, and QMS platforms. As an integration Architect you will have the following responsibilities * Define the integration architecture that allows disparate enterprise systems to speak a single, fluent language.
Lead Integration Architect - 12 Months Contract Outside IR35 £600 to £650 a day - 3 days a week in Dartford Kent - A global powerhouse in the Infrastructure and Built Environment sector is urgently seeking a visionary Integration Architect to spearhead the connectivity for a multi-million-pound Digital Manufacturing Cloud (DMC) transformation. This isn't a maintenance role. You will own the entire integration architecture, acting as the master orchestrator for a complex ecosystem. You will ensure that high-level ERP and HR systems communicate perfectly with the precision-engineered data flows of PLM, MES, and QMS platforms. As an integration Architect you will have the following responsibilities * Define the integration architecture that allows disparate enterprise systems to speak a single, fluent language.
FEATURED
Integration and API testing across Salesforce, SAP, and downstream systems
Integration and API testing across Salesforce, SAP, and downstream systems
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Proficiency in API testing tools (Postman, SOAP UI), SQL for data validation, and test management platforms such as Azure DevOps.
Proficiency in API testing tools (Postman, SOAP UI), SQL for data validation, and test management platforms such as Azure DevOps.
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Implement robust state management and API integration * Collaborate with backend teams on API contracts and integration
Implement robust state management and API integration * Collaborate with backend teams on API contracts and integration
FEATURED
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OutSystems Developer (LowCode Orchestration)
OutSystems Developer (LowCode Orchestration)
Infoplus Technologies UK Ltd
London
From £400 to £450 per day
Integration & API Management
Integration & API Management
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API integration
API integration
PREMIUM
API Automation (REST Assured, Karate, Postman)
API Automation (REST Assured, Karate, Postman)
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API first integration, event driven architectures, and data pipelines
API first integration, event driven architectures, and data pipelines
Oracle Fusion HCM Technical Architect
Oracle Fusion HCM Technical Architect
Infoplus Technologies UK Ltd
Crawley (RH10)
From £500 to £600 per day
The Role - We need Oracle Fusion HCM Technical Architect to support our Oracle Fusion related applications and delivery for one of the UKs large airline customer. Collaborate with business stakeholders (HR, Payroll, Benefits teams) to understand and translate requirements into scalable Oracle Fusion HCM solutions. oCore HR - oPayroll (UK) oAbsence Management - oBenefits - oHire-to-retire lifecycle - oPayroll processing, statutory compliance, and reporting - oLeave, accruals, and absence policies - oEmployee benefits enrolment and eligibility - Lead functional and technical design workshops, ensuring best practices and standardization. Review and validate functional design documents (FDDs) and solution designs. Support UAT and business validation, ensuring solutions meet business needs. Act as the key liaison between functional consultants, technical teams, and client stakeholders.
The Role - We need Oracle Fusion HCM Technical Architect to support our Oracle Fusion related applications and delivery for one of the UKs large airline customer. Collaborate with business stakeholders (HR, Payroll, Benefits teams) to understand and translate requirements into scalable Oracle Fusion HCM solutions. oCore HR - oPayroll (UK) oAbsence Management - oBenefits - oHire-to-retire lifecycle - oPayroll processing, statutory compliance, and reporting - oLeave, accruals, and absence policies - oEmployee benefits enrolment and eligibility - Lead functional and technical design workshops, ensuring best practices and standardization. Review and validate functional design documents (FDDs) and solution designs. Support UAT and business validation, ensuring solutions meet business needs. Act as the key liaison between functional consultants, technical teams, and client stakeholders.
API integrations
API integrations
PREMIUM
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Experience of API technologies and writing Restful APIs in JSON
Experience of API technologies and writing Restful APIs in JSON
FEATURED
Backend Developer - Java
Backend Developer - Java
Infoplus Technologies UK Ltd
The City, City of London (EC3), EC4R 9AA
Unspecified
Role: Backend Developer - Java - Location: Edinburgh / London, UK - Duration: Contract - Your Profile * 510 years of overall software development experience, with minimum 4+ years of hands on Java development * Strong experience with Java 9+ * Proven expertise in Spring Framework (Spring Boot, Spring MVC, Spring Core) * Hands on experience building backend services and APIs and Microservices * Solid understanding of object oriented design, design patterns, and clean code principles * Experience working in Agile / Scrum environments * Strong problem solving and debugging skills * Ability to work effectively in distributed, multi team environments * Experience with SaaS based architectures * Exposure to event driven architecture (Kafka, JMS, or equivalent) * Experience with system integration and enterprise messaging * Knowledge of cloud platforms (GCP preferred)
Role: Backend Developer - Java - Location: Edinburgh / London, UK - Duration: Contract - Your Profile * 510 years of overall software development experience, with minimum 4+ years of hands on Java development * Strong experience with Java 9+ * Proven expertise in Spring Framework (Spring Boot, Spring MVC, Spring Core) * Hands on experience building backend services and APIs and Microservices * Solid understanding of object oriented design, design patterns, and clean code principles * Experience working in Agile / Scrum environments * Strong problem solving and debugging skills * Ability to work effectively in distributed, multi team environments * Experience with SaaS based architectures * Exposure to event driven architecture (Kafka, JMS, or equivalent) * Experience with system integration and enterprise messaging * Knowledge of cloud platforms (GCP preferred)
Senior AWS DevOps Engineer (Test & Infrastructure Resilience) Location: Remote Working - Security Clearance: Must be eligible for SC Clearance - 6 Months Contract £400 to £600 a day inside IR35 - A top-tier consultancy firm is looking for an experienced AWS DevOps Engineer with a strong background in testing to help maintain and evolve Critical National Infrastructure (CNI) for a top UK client. This is a pivotal role in maintaining critical national infrastructure where scalability and resilience are essential. We're looking for a highly skilled DevOps engineer with a strong background in testing (including APIs). The ideal candidate should be self-motivated and results-driven, capable of thriving in an Agile team. You'll need to be comfortable with Confluence for documentation and Jira for project tracking and story management.
Senior AWS DevOps Engineer (Test & Infrastructure Resilience) Location: Remote Working - Security Clearance: Must be eligible for SC Clearance - 6 Months Contract £400 to £600 a day inside IR35 - A top-tier consultancy firm is looking for an experienced AWS DevOps Engineer with a strong background in testing to help maintain and evolve Critical National Infrastructure (CNI) for a top UK client. This is a pivotal role in maintaining critical national infrastructure where scalability and resilience are essential. We're looking for a highly skilled DevOps engineer with a strong background in testing (including APIs). The ideal candidate should be self-motivated and results-driven, capable of thriving in an Agile team. You'll need to be comfortable with Confluence for documentation and Jira for project tracking and story management.
FEATURED
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We're looking for a skilled Java Backend Engineer with strong experience in Spring and microservices to join our growing team. It is a UK based, fully remote, outside IR35, initial 6-month contract. * Build and maintain scalable microservices. * Develop REST APIs using Java & Spring. * Collaborate with cross-functional teams. * Write clean, efficient, and testable code. * Strong Java (8+) and Spring experience. * Solid background in microservices architecture. * Experience with REST APIs, Docker, and CI/CD. * Knowledge of databases (SQL). * Knowledge of Azure. Apply now to join a fast-moving, collaborative team.
We're looking for a skilled Java Backend Engineer with strong experience in Spring and microservices to join our growing team. It is a UK based, fully remote, outside IR35, initial 6-month contract. * Build and maintain scalable microservices. * Develop REST APIs using Java & Spring. * Collaborate with cross-functional teams. * Write clean, efficient, and testable code. * Strong Java (8+) and Spring experience. * Solid background in microservices architecture. * Experience with REST APIs, Docker, and CI/CD. * Knowledge of databases (SQL). * Knowledge of Azure. Apply now to join a fast-moving, collaborative team.
Role Summary - Leyton Orient is building a genuinely data-driven recruitment operation one where statistical rigour, AI tooling, and traditional scouting judgement work in concert rather than in tension. This role sits at the centre of that ambition. As Recruitment Data Scientist, you will design and deploy the models, pipelines, and AI-powered workflows that help our Head of Recruitment and Director of Football identify, assess, and prioritise players. You will work with real data from best-in-class providers, have direct access to senior decision-makers, and crucially have genuine scope to build, not just maintain. This is not a research role. The work you produce will directly influence recruitment decisions, shape squad-building strategy, and be presented to coaches and club leadership. If you want to see your work matter, this is the environment for it.
Role Summary - Leyton Orient is building a genuinely data-driven recruitment operation one where statistical rigour, AI tooling, and traditional scouting judgement work in concert rather than in tension. This role sits at the centre of that ambition. As Recruitment Data Scientist, you will design and deploy the models, pipelines, and AI-powered workflows that help our Head of Recruitment and Director of Football identify, assess, and prioritise players. You will work with real data from best-in-class providers, have direct access to senior decision-makers, and crucially have genuine scope to build, not just maintain. This is not a research role. The work you produce will directly influence recruitment decisions, shape squad-building strategy, and be presented to coaches and club leadership. If you want to see your work matter, this is the environment for it.
Your new role - We are looking for an experienced Full Stack C# Web Developer with strong React expertise to support the development and enhancement of a web-based compliance portal for a key programme. Responsibilities * Design, develop, and maintain a secure, scalable compliance web portal * Build and enhance back-end services using C# and .NET / .NET Core * Develop modern, responsive front-end applications using React * Integrate front-end components with RESTful APIs * Work closely with product owners, business analysts, and QA engineers * Ensure high standards of security, performance, and maintainability * Contribute to code reviews, documentation, and technical standards - What you'll need to succeed * Proven experience as a Full Stack Developer * Strong C# and .NET / .NET Core development background * Commercial experience building applications with React
Your new role - We are looking for an experienced Full Stack C# Web Developer with strong React expertise to support the development and enhancement of a web-based compliance portal for a key programme. Responsibilities * Design, develop, and maintain a secure, scalable compliance web portal * Build and enhance back-end services using C# and .NET / .NET Core * Develop modern, responsive front-end applications using React * Integrate front-end components with RESTful APIs * Work closely with product owners, business analysts, and QA engineers * Ensure high standards of security, performance, and maintainability * Contribute to code reviews, documentation, and technical standards - What you'll need to succeed * Proven experience as a Full Stack Developer * Strong C# and .NET / .NET Core development background * Commercial experience building applications with React
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Related Jobs
Locations
- Moorgate
- The City, City (EC3)
- Englefield Green
- Euston
- Granby Industrial Estate
- Harmondsworth
- Hinxton
- Shadwell
- City of London
- Cambridge
- Milton Keynes
- Dartford
- East London
- Wokingham
- Central London
- South West London
- West End
- Camberley
- London
- Cambridgeshire
- Berkshire
- Buckinghamshire
- Kent
- Surrey
- Oxfordshire
- Essex
- Hertfordshire
- West Sussex
- South East
- East Anglia