Date posted
Commute time
Locations
Type of Company
Job types
Salaries
Locations
Locations
Popular locations
Salaries
Date posted
Type of Company
Job types
Locations
- The City, City (EC4)
- Shoreditch
- The City, City (EC3)
- Southwark
- Hinxton
- Arundel Heights
- Bloomsbury
- Datchet Common
- Euston
- Felbridge
- City of London
- Cambridge
- Central London
- West End
- Reading
- East London
- South East London
- Milton Keynes
- Abingdon
- North West London
- London
- Cambridgeshire
- Berkshire
- Oxfordshire
- Buckinghamshire
- Essex
- Hertfordshire
- Surrey
- Northamptonshire
- West Sussex
- South East
- East Anglia
- East Midlands
- Midlands
19 Contract API jobs in Haslemere Industrial Estate, Welwyn + 20 miles
462 exact matches jobs are outside your preferred location
)
Utilise Fetch API to automate interactions with web services and validate data flows.
Utilise Fetch API to automate interactions with web services and validate data flows.
FEATURED
)
Senior .Net Integration Developer
Senior .Net Integration Developer
Rise Technical
Maidenhead, Berkshire
£50000.00 - £70000.00 per annum + + Training + Holiday
You will use your expertise in C#/.NET and modern APIs (REST, WebAPI, JSON, OAuth2) to build fault-tolerant, event-driven integrations, support customers and partners with API usage, and deliver clear, high-quality documentation while maintaining security, GDPR compliance, and operational reliability. Taking integration leadership, you will design and maintain well-documented financial and third-party integrations built on modern API standards. * Support customers and partners with integration setup and API usage
You will use your expertise in C#/.NET and modern APIs (REST, WebAPI, JSON, OAuth2) to build fault-tolerant, event-driven integrations, support customers and partners with API usage, and deliver clear, high-quality documentation while maintaining security, GDPR compliance, and operational reliability. Taking integration leadership, you will design and maintain well-documented financial and third-party integrations built on modern API standards. * Support customers and partners with integration setup and API usage
)
Senior .Net Integration Developer
Senior .Net Integration Developer
Rise Technical Recruitment Limited
Maidenhead (SL6)
£50000.00 - £70000.00 per annum + + Training + Holiday
You will use your expertise in C#/.NET and modern APIs (REST, WebAPI, JSON, OAuth2) to build fault-tolerant, event-driven integrations, support customers and partners with API usage, and deliver clear, high-quality documentation while maintaining security, GDPR compliance, and operational reliability. Taking integration leadership, you will design and maintain well-documented financial and third-party integrations built on modern API standards. * Support customers and partners with integration setup and API usage
You will use your expertise in C#/.NET and modern APIs (REST, WebAPI, JSON, OAuth2) to build fault-tolerant, event-driven integrations, support customers and partners with API usage, and deliver clear, high-quality documentation while maintaining security, GDPR compliance, and operational reliability. Taking integration leadership, you will design and maintain well-documented financial and third-party integrations built on modern API standards. * Support customers and partners with integration setup and API usage
PREMIUM
)
Technical Delivery Lead – Oracle Fusion & Enterprise Solutions
Technical Delivery Lead – Oracle Fusion & Enterprise Solutions
EFCI Group Ltd
Oxford (OX4)
From £80,000 to £90,000 per annum + £6500 travel allowance + 10% bonus
Oversee integration design and implementation, enforcing best practices across platforms like Oracle Integration Cloud (OIC) and API Gateways. * Expertise in integration technologies such as OIC, API Gateway, MuleSoft, or comparable integration services.
Oversee integration design and implementation, enforcing best practices across platforms like Oracle Integration Cloud (OIC) and API Gateways. * Expertise in integration technologies such as OIC, API Gateway, MuleSoft, or comparable integration services.
Analyse technical capabilities, integrations, and API readiness.
Analyse technical capabilities, integrations, and API readiness.
)
MUST HAVES: Proficient in Flutter / React Native / MAUI, Mobile App Payment Services, strong API consumption, and App security best practices.
MUST HAVES: Proficient in Flutter / React Native / MAUI, Mobile App Payment Services, strong API consumption, and App security best practices.
FEATURED
)
Operating in a rapidly evolving logistics sector, they will leverage cutting-edge Azure PaaS technologies (App Services, Functions, API Management, etc.) to drive efficiency, reliability, and innovation across high-impact national projects. * Experience with microservices architecture and API Management.
Operating in a rapidly evolving logistics sector, they will leverage cutting-edge Azure PaaS technologies (App Services, Functions, API Management, etc.) to drive efficiency, reliability, and innovation across high-impact national projects. * Experience with microservices architecture and API Management.
)
API and SDK automation, metadata ingestion and catalogue enrichment
API and SDK automation, metadata ingestion and catalogue enrichment
)
Strong knowledge of API integration.
Strong knowledge of API integration.
NEW
)
APIs: REST API
APIs: REST API
NEWFEATURED
Azure Cosmos DB (SQL/Mongo API), NoSQL modelling
Azure Cosmos DB (SQL/Mongo API), NoSQL modelling
)
Strong grasp of databases (SQL/NoSQL) and API integrations
Strong grasp of databases (SQL/NoSQL) and API integrations
Act as the champion for TMF ODA and Open API principles across Energy Services Platform. Strong experience designing and implementing solutions using TM Forum Open APIs and a deep understanding of the ODA and Open API frameworks - Proficiency in RESTful API design, JSON, OpenAPI/Swagger specifications, microservices architecture, and cloud-native deployment models (Docker, Kubernetes, public/hybrid cloud platforms)
Act as the champion for TMF ODA and Open API principles across Energy Services Platform. Strong experience designing and implementing solutions using TM Forum Open APIs and a deep understanding of the ODA and Open API frameworks - Proficiency in RESTful API design, JSON, OpenAPI/Swagger specifications, microservices architecture, and cloud-native deployment models (Docker, Kubernetes, public/hybrid cloud platforms)
)
Senior/Lead Full Stack Developer (React / Python) AI Start up!
Senior/Lead Full Stack Developer (React / Python) AI Start up!
Robert Half
City of London (EC1)
Negotiable
API & database experience
API & database experience
)
Skilled in building robust, optimized API endpoints.
Skilled in building robust, optimized API endpoints.
)
Strong Python & C# skills; API and cloud architecture experience (Azure a plus).
Strong Python & C# skills; API and cloud architecture experience (Azure a plus).
FEATURED
)
Applications Support Analyst / Engineer
Applications Support Analyst / Engineer
Kudos Partners
Datchet Common, Slough (SL3), SL3
£75,000 per annum plus 12% bonus - generous benefits package
API support and monitoring tools (e.g., SolarWinds, AzureAppInsights)
API support and monitoring tools (e.g., SolarWinds, AzureAppInsights)
)
Proficiency in API development, integration testing, and cross-platform troubleshooting.
Proficiency in API development, integration testing, and cross-platform troubleshooting.
)
Proven track record delivering ITSM integrations, API development, web services and automation.
Proven track record delivering ITSM integrations, API development, web services and automation.
FEATURED
)
Optimize inference performance and cost (e.g., model compression, quantization, API optimization).
Optimize inference performance and cost (e.g., model compression, quantization, API optimization).
)
3 or more years' experience of technical testing micro services solutions, at a service and API layer specifically * Hands-on understanding and experience with API testing * Ability to develop functional tests, which exercise the UI, API and DB layer
3 or more years' experience of technical testing micro services solutions, at a service and API layer specifically * Hands-on understanding and experience with API testing * Ability to develop functional tests, which exercise the UI, API and DB layer
FEATURED
)
Proficient in automation tooling relevant to SAP & developing scripts (API & UI level)
Proficient in automation tooling relevant to SAP & developing scripts (API & UI level)
)
Develop and maintain high-quality user manuals, installation guides, API documentation, and online help content.
Develop and maintain high-quality user manuals, installation guides, API documentation, and online help content.
FEATURED
)
Collaborate effectively with other technical groupssuch as API teamscontributing to low-level API design decisions
Collaborate effectively with other technical groupssuch as API teamscontributing to low-level API design decisions
)
BMC Helix Technical Delivery Consultant
BMC Helix Technical Delivery Consultant
Vallum Associates Limited
Grazeley, Reading (RG7), RG2
Inside IR35
Familiarity with API development, web services, and data migration strategies.
Familiarity with API development, web services, and data migration strategies.
Related Jobs
Locations
- The City, City (EC4)
- Shoreditch
- The City, City (EC3)
- Southwark
- Hinxton
- Arundel Heights
- Bloomsbury
- Datchet Common
- Euston
- Felbridge
- City of London
- Cambridge
- Central London
- West End
- Reading
- East London
- South East London
- Milton Keynes
- Abingdon
- North West London
- London
- Cambridgeshire
- Berkshire
- Oxfordshire
- Buckinghamshire
- Essex
- Hertfordshire
- Surrey
- Northamptonshire
- West Sussex
- South East
- East Anglia
- East Midlands
- Midlands