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22 Contract API jobs in Huddersfield + 20 miles
Leading the end-to-end migration of the clientsweb application, API, and databasefrom Azure to AWS.
Leading the end-to-end migration of the clientsweb application, API, and databasefrom Azure to AWS.
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Strong background in API development, cloud adoption frameworks, and modern architectures.
Strong background in API development, cloud adoption frameworks, and modern architectures.
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Document systems integrations, API behaviour, data flows, and authentication patterns * Produce technical documentation: integration guides, sequence diagrams, API specs * Ability to create technical artefacts: sequence diagrams, data flows, API specifications
Document systems integrations, API behaviour, data flows, and authentication patterns * Produce technical documentation: integration guides, sequence diagrams, API specs * Ability to create technical artefacts: sequence diagrams, data flows, API specifications
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The focus is on developing robust APIs using Symfony API Platform alongside performant, user-friendly interfaces built with Next.js and React. * Designing and building API endpoints and business logic using Symfony (PHP) & API Platform
The focus is on developing robust APIs using Symfony API Platform alongside performant, user-friendly interfaces built with Next.js and React. * Designing and building API endpoints and business logic using Symfony (PHP) & API Platform
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Provide architectural guidance on MDM platform selection, cloud vs. on-prem deployment, and integration patterns (API, ETL, messaging).
Provide architectural guidance on MDM platform selection, cloud vs. on-prem deployment, and integration patterns (API, ETL, messaging).
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API Integration - Work with RESTful APIs and third-party services to enhance website functionality.
API Integration - Work with RESTful APIs and third-party services to enhance website functionality.
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Senior Software Engineer
Senior Software Engineer
Beamost Ltd
Leeds (LS1)
From £70,000 to £130,000 per annum depending on experience.
We are looking for an experienced Senior Python Software Engineer to take ownership of an established trading-related application and drive its ongoing development. You will manage and enhance the existing codebase, deliver new features, ensure reliability and performance, and help evolve the system as the business grows. This is an excellent opportunity for someone who enjoys autonomy, technical responsibility, and working on low-latency, high-performance applications. What Youll Do * Maintain, extend, and optimise an existing Python-based trading application * Add new features and improve current capabilities with a focus on performance, reliability and clean architecture * Build and optimise real-time pipelines handling high-frequency data * Improve latency, throughput, and reliability using profiling and performance engineering
We are looking for an experienced Senior Python Software Engineer to take ownership of an established trading-related application and drive its ongoing development. You will manage and enhance the existing codebase, deliver new features, ensure reliability and performance, and help evolve the system as the business grows. This is an excellent opportunity for someone who enjoys autonomy, technical responsibility, and working on low-latency, high-performance applications. What Youll Do * Maintain, extend, and optimise an existing Python-based trading application * Add new features and improve current capabilities with a focus on performance, reliability and clean architecture * Build and optimise real-time pipelines handling high-frequency data * Improve latency, throughput, and reliability using profiling and performance engineering
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Iot Systems Engineer
Iot Systems Engineer
KO2 Embedded Recruitment Solutions LTD
Oakenshaw, Bradford (BD12), BD19 6BU
£40000 - £50000 per annum
Position: IoT Systems Engineer - Location: Thornbury, Bradford - Salary: up to £50,000 + benefits - Employment: Full-time, on-site (limited hybrid flexibility) Our client, a technology company based in Thornbury, Bradford, develops monitoring devices used for refrigeration environments for intracellular fluid. They are seeking an IoT Systems Engineer to support the deployment, integration and operation of their connected monitoring systems. This role is primarily site-based, with occasional customer visits in the UK and abroad. A driving licence and valid passport are required. Key Responsibilities * Deploy and support IoT systems using Node-RED, including building data flows and integrations. * Configure and manage IoT devices and gateways, including LoRaWAN (Chirpstack). * Maintain secure data pathways using HTTP/MQTT, APIs and industrial protocols (Modbus-TCP, OPC-
Position: IoT Systems Engineer - Location: Thornbury, Bradford - Salary: up to £50,000 + benefits - Employment: Full-time, on-site (limited hybrid flexibility) Our client, a technology company based in Thornbury, Bradford, develops monitoring devices used for refrigeration environments for intracellular fluid. They are seeking an IoT Systems Engineer to support the deployment, integration and operation of their connected monitoring systems. This role is primarily site-based, with occasional customer visits in the UK and abroad. A driving licence and valid passport are required. Key Responsibilities * Deploy and support IoT systems using Node-RED, including building data flows and integrations. * Configure and manage IoT devices and gateways, including LoRaWAN (Chirpstack). * Maintain secure data pathways using HTTP/MQTT, APIs and industrial protocols (Modbus-TCP, OPC-
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Tech Lead Software Engineer - eCommerce
Tech Lead Software Engineer - eCommerce
Circle Group
Leeds (LS1)
£75000 - £95000 per annum + remote+bens
Location: Remote - 1 day a month in the office, Manchester, Leeds or Sheffield are a very commutable distance to HQ - If you're the kind of developer who enjoys solving complex problems, building slick digital experiences, and leading from the front - this could be your next challenge. This growing online retailer (we can't name names, but you've almost definitely shopped with them) is looking for a Senior / Tech Lead Software Engineer to help shape the next generation of their eCommerce platform. You'll guide a small talented development team, take ownership of key projects, be no.2 to the Head of Engineering and make a real impact on how millions of customers shop online. * Leading software development projects from concept to delivery. * Designing scalable, high-performing architectures that keep things running smoothly.
Location: Remote - 1 day a month in the office, Manchester, Leeds or Sheffield are a very commutable distance to HQ - If you're the kind of developer who enjoys solving complex problems, building slick digital experiences, and leading from the front - this could be your next challenge. This growing online retailer (we can't name names, but you've almost definitely shopped with them) is looking for a Senior / Tech Lead Software Engineer to help shape the next generation of their eCommerce platform. You'll guide a small talented development team, take ownership of key projects, be no.2 to the Head of Engineering and make a real impact on how millions of customers shop online. * Leading software development projects from concept to delivery. * Designing scalable, high-performing architectures that keep things running smoothly.
Role: ServiceNow Architect - Location: Remote in Europe - Type: Contract (Outside IR35) Summary - We're seeking a seasoned ServiceNow Architect to lead enterprise-scale solution design, platform governance, and integration strategy across core ServiceNow products (ITSM, ITOM, HRSD, CSM). The ideal candidate also brings hands-on Salesforce experience to architect and deliver robust integrations and cross-platform processes. You will drive architectural standards, scalability, security, and value realization while guiding delivery teams and stakeholders. Key Responsibilities * Architecture & Solution Design - o Own end-to-end architecture across ServiceNow modules (e.g., ITSM, ITOM/Discovery/Service Mapping, HRSD, CSM, SPM/App Engine). o Define data models and align with CSDM standards; establish CMDB strategy, health, and governance.
Role: ServiceNow Architect - Location: Remote in Europe - Type: Contract (Outside IR35) Summary - We're seeking a seasoned ServiceNow Architect to lead enterprise-scale solution design, platform governance, and integration strategy across core ServiceNow products (ITSM, ITOM, HRSD, CSM). The ideal candidate also brings hands-on Salesforce experience to architect and deliver robust integrations and cross-platform processes. You will drive architectural standards, scalability, security, and value realization while guiding delivery teams and stakeholders. Key Responsibilities * Architecture & Solution Design - o Own end-to-end architecture across ServiceNow modules (e.g., ITSM, ITOM/Discovery/Service Mapping, HRSD, CSM, SPM/App Engine). o Define data models and align with CSDM standards; establish CMDB strategy, health, and governance.
Essential Skills Core AWS Services: Proficiency / understanding of key AWS services listed below:- S3- Athena- Glue- Lambda- DynamoDB- OpenSearch- CloudFormation- API Gateway- ECS- CloudWatch
Essential Skills Core AWS Services: Proficiency / understanding of key AWS services listed below:- S3- Athena- Glue- Lambda- DynamoDB- OpenSearch- CloudFormation- API Gateway- ECS- CloudWatch
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AWS Services: S3- Athena- Glue- Lambda- DynamoDB- OpenSearch- CloudFormation- API Gateway- ECS- CloudWatch.
AWS Services: S3- Athena- Glue- Lambda- DynamoDB- OpenSearch- CloudFormation- API Gateway- ECS- CloudWatch.
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Contract Software Developer - AWS, React & Next.js
Contract Software Developer - AWS, React & Next.js
WRK DIGITAL LTD
Leeds (LS1)
From £400 to £450 per day OUTSIDE of IR35
The tech stack for this full stack project is React, Next.js, TailwindCSS for the front end, Firebase cloud functions, Next.js API routes for the backend and Cloud Firestore for the database.
The tech stack for this full stack project is React, Next.js, TailwindCSS for the front end, Firebase cloud functions, Next.js API routes for the backend and Cloud Firestore for the database.
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Strong understanding of system integrations, including API-based workflows, data exchange patterns + documentation of data integration specifications.
Strong understanding of system integrations, including API-based workflows, data exchange patterns + documentation of data integration specifications.
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Strong understanding of B2B API integration principles
Strong understanding of B2B API integration principles
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API development experience
API development experience
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As we mature our platform, you'll help formalize our governance, CI/CD pipelines and API-driven integrations (including webhooks, custom connectors and RESTful services). * Power Automate flows (scheduled, instant and event-driven) with HTTP/Webhook triggers, custom connectors and API consumption * Provide L2/L3 support for production applications, reports and automations; troubleshoot C# plugins or API errors. * Experience building custom connectors, Azure Functions, webhooks and REST API integrations.
As we mature our platform, you'll help formalize our governance, CI/CD pipelines and API-driven integrations (including webhooks, custom connectors and RESTful services). * Power Automate flows (scheduled, instant and event-driven) with HTTP/Webhook triggers, custom connectors and API consumption * Provide L2/L3 support for production applications, reports and automations; troubleshoot C# plugins or API errors. * Experience building custom connectors, Azure Functions, webhooks and REST API integrations.
Support developers and third parties with API documentation, test cases, and deployment coordination. * Strong grasp of API-based system integrations and data handling principles.
Support developers and third parties with API documentation, test cases, and deployment coordination. * Strong grasp of API-based system integrations and data handling principles.
Support developers and third parties with API documentation, test cases, and deployment coordination. * Strong grasp of API-based system integrations and data handling principles.
Support developers and third parties with API documentation, test cases, and deployment coordination. * Strong grasp of API-based system integrations and data handling principles.
Description - Were looking for an experienced and proactive Senior Delivery & Product Manager to lead the successful delivery of digital products, AI and IoT technology and complex web apps across our client portfolio. Alongside driving delivery, youll take a strong product ownership role shaping vision and outcomes, clarifying user needs, translating ambiguity into actionable roadmaps, and ensuring the work we deliver genuinely solves the right problems. Youll partner with clients to define product strategy, challenge assumptions, prioritise effectively, and guide teams toward building high-value, user-centred solutions. Youll still own the day-to-day rhythm of delivery: shaping scope, enabling cross-functional teams (Engineering, Design, UX, QA, Data, AI), managing client relationships, and ensuring we execute reliably against outcomes, budgets, and timelines.
Description - Were looking for an experienced and proactive Senior Delivery & Product Manager to lead the successful delivery of digital products, AI and IoT technology and complex web apps across our client portfolio. Alongside driving delivery, youll take a strong product ownership role shaping vision and outcomes, clarifying user needs, translating ambiguity into actionable roadmaps, and ensuring the work we deliver genuinely solves the right problems. Youll partner with clients to define product strategy, challenge assumptions, prioritise effectively, and guide teams toward building high-value, user-centred solutions. Youll still own the day-to-day rhythm of delivery: shaping scope, enabling cross-functional teams (Engineering, Design, UX, QA, Data, AI), managing client relationships, and ensuring we execute reliably against outcomes, budgets, and timelines.
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About The Role - FDM is a global business and technology consultancy seeking a Front-End Developer to work for our client within the healthcare sector. This is initially a 6-month contract with the potential to extend up to 2 years and will be a hybrid role based in London or Leeds. Our client is seeking an experienced Front-End Developer who is skilled in modern JavaScript frameworks. The ideal candidate will be willing to travel to the Leeds office twice a month. Responsibilities * Develop accessible, responsive, as well as performant user interfaces using NextJs and React to meet complex healthcare service needs * Write clean, semantic HTML, CSS, and JavaScript code that strictly adheres to W3C standards and GDS (Government Design System) principles * Collaborate closely with backend engineers to integrate frontend components with Python-based services and APIs
About The Role - FDM is a global business and technology consultancy seeking a Front-End Developer to work for our client within the healthcare sector. This is initially a 6-month contract with the potential to extend up to 2 years and will be a hybrid role based in London or Leeds. Our client is seeking an experienced Front-End Developer who is skilled in modern JavaScript frameworks. The ideal candidate will be willing to travel to the Leeds office twice a month. Responsibilities * Develop accessible, responsive, as well as performant user interfaces using NextJs and React to meet complex healthcare service needs * Write clean, semantic HTML, CSS, and JavaScript code that strictly adheres to W3C standards and GDS (Government Design System) principles * Collaborate closely with backend engineers to integrate frontend components with Python-based services and APIs
Restful API Services experience
Restful API Services experience
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83 exact matches jobs are outside your preferred location
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Lead JavaScript Developer
Lead JavaScript Developer
Bright Purple Resourcing
Manchester, Greater Manchester, M60
£450 p/d - Outside IR35.
Real-world API experience: authentication, REST, RPC, GraphQL, tRPC
Real-world API experience: authentication, REST, RPC, GraphQL, tRPC
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Proven experience building and maintaining API integrations and data pipelines (REST, JSON, XML, JDBC)
Proven experience building and maintaining API integrations and data pipelines (REST, JSON, XML, JDBC)
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Senior Backend Developer
Senior Backend Developer
DCV Technologies Limited
Manchester (M1)
From £400 to £470 per day 6 month contract plus extension
This is a hands-on backend role focused on Java/Kotlin microservices, secure API design, and cloud delivery. * Secure API design, OAuth, authentication/authorisation
This is a hands-on backend role focused on Java/Kotlin microservices, secure API design, and cloud delivery. * Secure API design, OAuth, authentication/authorisation
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