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5 Contract API jobs in Chelmsford + 20 miles
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API authentication (OAuth 2.0, Azure AD).
API authentication (OAuth 2.0, Azure AD).
NEWFEATURED
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Salary: £35,000 (depending on experience) Job type: Hybrid (Once per week in Feering Office for the first 3-6 months) Please Note: We do not have offer any sponsorship. Youll be hands-on in React most daysworking on our digisuite platform, client websites (Next.js), AI-enhanced tools, and bespoke responsive HTML emails. Youll collaborate closely with designers, developers, and project managers to deliver high-quality, innovative digital products. Annual Leave: 31 days - Progressive Annual Leave: Increases by 1 day each year after your first full year (up to 5 extra days). Birthday Leave: One additional day off on your birthday (post-probation). Social Events: Year-round events organised by our Social Committee. Private Medical Insurance: Optional after 1 year of service. Long Service Awards: Given every 5 years of continuous service.
Salary: £35,000 (depending on experience) Job type: Hybrid (Once per week in Feering Office for the first 3-6 months) Please Note: We do not have offer any sponsorship. Youll be hands-on in React most daysworking on our digisuite platform, client websites (Next.js), AI-enhanced tools, and bespoke responsive HTML emails. Youll collaborate closely with designers, developers, and project managers to deliver high-quality, innovative digital products. Annual Leave: 31 days - Progressive Annual Leave: Increases by 1 day each year after your first full year (up to 5 extra days). Birthday Leave: One additional day off on your birthday (post-probation). Social Events: Year-round events organised by our Social Committee. Private Medical Insurance: Optional after 1 year of service. Long Service Awards: Given every 5 years of continuous service.
Knowledge of Salesforces API
Knowledge of Salesforces API
This role involves creating high-quality documentation, including API integrations, and leveraging your expertise to guide projects to success. * Document and manage API requirements, ensuring alignment with REST/GraphQL principles and system capabilities. * Leverage knowledge of API principles (REST/GraphQL), web technologies (e.g., cookies, HTML, JSON), and authentication protocols (e.g., oAuth2, SAML). * Understanding of API principles such as REST / GraphQL
This role involves creating high-quality documentation, including API integrations, and leveraging your expertise to guide projects to success. * Document and manage API requirements, ensuring alignment with REST/GraphQL principles and system capabilities. * Leverage knowledge of API principles (REST/GraphQL), web technologies (e.g., cookies, HTML, JSON), and authentication protocols (e.g., oAuth2, SAML). * Understanding of API principles such as REST / GraphQL
As an HL7 Integration Analyst, you will be responsible for the development, deployment, analysis, and maintenance of healthcare integration solutions. You will focus on delivering robust interoperability across systems by leveraging standards such as HL7 (v2 and FHIR), Rhapsody Integration Engine, APIs, and custom code solutions. In addition to developing and supporting integration points, you will play a critical role in conducting integration analysis to ensure clinical and operational requirements are accurately interpreted and met through technical delivery. This role requires an exceptionally high level of technical expertise. The post holder is expected to have the skill to routinely analyse and solve highly complex technical problems without the need to call upon others for advice, whilst providing technical guidance and sharing knowledge with other in-house ..
As an HL7 Integration Analyst, you will be responsible for the development, deployment, analysis, and maintenance of healthcare integration solutions. You will focus on delivering robust interoperability across systems by leveraging standards such as HL7 (v2 and FHIR), Rhapsody Integration Engine, APIs, and custom code solutions. In addition to developing and supporting integration points, you will play a critical role in conducting integration analysis to ensure clinical and operational requirements are accurately interpreted and met through technical delivery. This role requires an exceptionally high level of technical expertise. The post holder is expected to have the skill to routinely analyse and solve highly complex technical problems without the need to call upon others for advice, whilst providing technical guidance and sharing knowledge with other in-house ..
466 exact matches jobs are outside your preferred location
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A top-tier defense organization is looking for an experienced Axway API Developer / Administrator to join their team on a 6-month contract. * Axway's core products: Policy Studio, API Gateway, and API Manager. If you are an experienced professional with a background in API, MFT, or secure file transfers, this could be the perfect opportunity for you.
A top-tier defense organization is looking for an experienced Axway API Developer / Administrator to join their team on a 6-month contract. * Axway's core products: Policy Studio, API Gateway, and API Manager. If you are an experienced professional with a background in API, MFT, or secure file transfers, this could be the perfect opportunity for you.
NEWFEATURED
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Senior API Technical Consultant (GraphQL Specialist)
Senior API Technical Consultant (GraphQL Specialist)
Staffworx Limited
London
market rates, outside IR35, 2 days on site
Lead the designand evolution of our API schemas, ensuring they meet the complex demands of a rapidly growing platform. * Expert levelGraphQL, including advanced API design, schema evolution, performance optimisation.
Lead the designand evolution of our API schemas, ensuring they meet the complex demands of a rapidly growing platform. * Expert levelGraphQL, including advanced API design, schema evolution, performance optimisation.
Senior JavaScript Engineer / Developer (Vue.js API) London to £100k - Apply now to find out more about this Senior JavaScript Engineer / Developer (JavaScript Vue.js API) opportunity.
Senior JavaScript Engineer / Developer (Vue.js API) London to £100k - Apply now to find out more about this Senior JavaScript Engineer / Developer (JavaScript Vue.js API) opportunity.
NEWPREMIUM
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skilled with API development, message buses and languages such as C#, Python, or PHP
skilled with API development, message buses and languages such as C#, Python, or PHP
FEATURED
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Lead Python Developer, Backend Developer, GCP, Flask,API
Lead Python Developer, Backend Developer, GCP, Flask,API
Experis UK
London
£70000 - £90000 per annum + Benefits
£70-90k + Benefits - 2 days on site in North London - 3 days remote - I am recruting for a talented and driven Backend Engineer to join a dynamic team, focused on the creation and deployment of innovative software solutions. As a Backend Engineer, you will work closely with cross-functional teams, including engineering, product management, design, and quality assurance, to develop cutting-edge features that power our platform. * Collaborate with cross-functional teams: Contribute to the development of new features by working alongside engineering, product management, design, and QA teams. * Promote best practices: Advocate and enforce coding standards, architectural patterns, and best practices. Your in-depth knowledge of backend technologies will help guide and support your peers, ensuring high-quality code.
£70-90k + Benefits - 2 days on site in North London - 3 days remote - I am recruting for a talented and driven Backend Engineer to join a dynamic team, focused on the creation and deployment of innovative software solutions. As a Backend Engineer, you will work closely with cross-functional teams, including engineering, product management, design, and quality assurance, to develop cutting-edge features that power our platform. * Collaborate with cross-functional teams: Contribute to the development of new features by working alongside engineering, product management, design, and QA teams. * Promote best practices: Advocate and enforce coding standards, architectural patterns, and best practices. Your in-depth knowledge of backend technologies will help guide and support your peers, ensuring high-quality code.
PREMIUM
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Backend Software Engineer Java Kotlin AWS
Backend Software Engineer Java Kotlin AWS
Client Server
Shoreditch, EC2A 2AP
£100000 - £120000 per annum
Backend Software Engineer / Developer (Java Kotlin AWS API) Hybrid WFH to £110k
Backend Software Engineer / Developer (Java Kotlin AWS API) Hybrid WFH to £110k
NEWPREMIUM
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Up to £515 per day (Inside IR35) Remote / must be UK based - 3 months initially (open to extension) My client is an instantly recognisable consultancy who seek a - to lead the design and implementation of robust, secure, and scalable integrations for an end client. * Hands-on experience as a Senior Integration Developer, with D365 Finance integrations. * Deep knowledge of REST APIs, OData, DMF packages, and data mapping (XSLT, XML, JSON, CSV). * Proficiency in tools like Postman, Azure Logic Apps, PowerShell, and C#. * Experience with ETL processes, error handling, idempotency, and throttling. * Strong understanding of secure data handling, encryption, and compliance standards. * Familiarity with monitoring tools like Application Insights and Log Analytics. * Industry experience within financial services * Experience with Microsoft Power Platform (Power Automate, Powe
Up to £515 per day (Inside IR35) Remote / must be UK based - 3 months initially (open to extension) My client is an instantly recognisable consultancy who seek a - to lead the design and implementation of robust, secure, and scalable integrations for an end client. * Hands-on experience as a Senior Integration Developer, with D365 Finance integrations. * Deep knowledge of REST APIs, OData, DMF packages, and data mapping (XSLT, XML, JSON, CSV). * Proficiency in tools like Postman, Azure Logic Apps, PowerShell, and C#. * Experience with ETL processes, error handling, idempotency, and throttling. * Strong understanding of secure data handling, encryption, and compliance standards. * Familiarity with monitoring tools like Application Insights and Log Analytics. * Industry experience within financial services * Experience with Microsoft Power Platform (Power Automate, Powe
NEW
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Integration Architect
Integration Architect
Lynx Recruitment Limited
SW1W, South West London
From £85,000 to £100,000 per annum
Create high-level architectural assets, including API catalogues, application and connectivity models, guiding detailed design - Solid understanding of SOA, REST, and API management principles - Proficient with XSD, XML, XSLT, JSON, API
Create high-level architectural assets, including API catalogues, application and connectivity models, guiding detailed design - Solid understanding of SOA, REST, and API management principles - Proficient with XSD, XML, XSLT, JSON, API
NEW
Work with cloud platforms (AWS, GCP, O365), API integration, containerisation, and microservices
Work with cloud platforms (AWS, GCP, O365), API integration, containerisation, and microservices
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Azure Analytics & Integration stack (e.g., Databricks, Synapse, Logic Apps, API Management) o API frameworks (SOAP, REST, WebSocket)
Azure Analytics & Integration stack (e.g., Databricks, Synapse, Logic Apps, API Management) o API frameworks (SOAP, REST, WebSocket)
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Strong experience with API and event-driven architectures.
Strong experience with API and event-driven architectures.
NEWFEATURED
Previous work in API integration
Previous work in API integration
NEW
Strong knowledge of data modelling, API management, and cloud integration.
Strong knowledge of data modelling, API management, and cloud integration.
NEWFEATURED
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Deep understanding of RESTful API design and integration
Deep understanding of RESTful API design and integration
NEW
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Extensive experience withAWScloud ecosystem services like EC2, S3, Lambda, SNS/SQS, API Gateway, RDS/DynamoDB, CloudFormation, etc.
Extensive experience withAWScloud ecosystem services like EC2, S3, Lambda, SNS/SQS, API Gateway, RDS/DynamoDB, CloudFormation, etc.
NEW
Deep understanding of RESTful API design and integration
Deep understanding of RESTful API design and integration
NEW
Senior Software Developer
Senior Software Developer
Tech 4
E10, East London
From £64,000 to £70,000 per annum + excellent benefits
Assist with the design, implementation, and testing of APIs that adhere to the Open API specification
Assist with the design, implementation, and testing of APIs that adhere to the Open API specification
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Build and maintain an API used by the product as well as external partners.
Build and maintain an API used by the product as well as external partners.
NEW
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Strong understanding of REST API design and backend microservices architecture
Strong understanding of REST API design and backend microservices architecture
NEW
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Provide technical direction on MuleSoft integrations and ensure robust API strategy and lifecycle management.
Provide technical direction on MuleSoft integrations and ensure robust API strategy and lifecycle management.