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59 Permanent API jobs in Oxfordshire + 20 miles
397 exact matches jobs are outside your preferred location
My client are seeking a talentedScala Developerto join their engineering team and contribute to the design and development ofscalable, high-performance applications. This role involves working on modern distributed systems, building APIs, and collaborating with cross-functional teams to deliver enterprise-grade solutions. * Design, develop and maintain backend services and APIs usingScalaandPlay Framework. * Implement RESTful endpoints, manage request/response lifecycle, and handle authentication/authorization flows. * Write well-structured, idiomatic Scala and use functional programming patterns where appropriate. * Build and maintain automated tests (unit, integration), and support test automation efforts. * Collaborate with product owners, UX, QA, and other engineers in an Agile environment (Scrum/Kanban).
My client are seeking a talentedScala Developerto join their engineering team and contribute to the design and development ofscalable, high-performance applications. This role involves working on modern distributed systems, building APIs, and collaborating with cross-functional teams to deliver enterprise-grade solutions. * Design, develop and maintain backend services and APIs usingScalaandPlay Framework. * Implement RESTful endpoints, manage request/response lifecycle, and handle authentication/authorization flows. * Write well-structured, idiomatic Scala and use functional programming patterns where appropriate. * Build and maintain automated tests (unit, integration), and support test automation efforts. * Collaborate with product owners, UX, QA, and other engineers in an Agile environment (Scrum/Kanban).
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Full Stack - Ruby on Rails, React - Up to £120k DOE - Fully Remote - must be UK based - A fast-growing sports tech company building high-performance, data-driven products for a rapidly expanding global audience is searching for a Lead Full Stack Engineer. This is a pivotal role for an experienced engineer who thrives on shaping architecture, driving technical direction, and still remaining hands-on in the codebase. As a technical leader within a cross-functional Product Team, you'll influence the long-term engineering strategy, guide architectural decisions, and ensure the platform scales reliably as our user base grows. You'll act as a role model for engineering excellence - mentoring others, elevating standards, and collaborating closely with Product, Design, and Customer Success to build tools our customers truly value. Tech Stack: Ruby on Rails, React, React Nativ
Full Stack - Ruby on Rails, React - Up to £120k DOE - Fully Remote - must be UK based - A fast-growing sports tech company building high-performance, data-driven products for a rapidly expanding global audience is searching for a Lead Full Stack Engineer. This is a pivotal role for an experienced engineer who thrives on shaping architecture, driving technical direction, and still remaining hands-on in the codebase. As a technical leader within a cross-functional Product Team, you'll influence the long-term engineering strategy, guide architectural decisions, and ensure the platform scales reliably as our user base grows. You'll act as a role model for engineering excellence - mentoring others, elevating standards, and collaborating closely with Product, Design, and Customer Success to build tools our customers truly value. Tech Stack: Ruby on Rails, React, React Nativ
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Scala Developer - Remote Contract - Immediate Start
Scala Developer - Remote Contract - Immediate Start
Stealth IT Consulting Limited
UK
£380 per day £380 per day (Inside IR35)
Role Overview - We are seeking an experienced Scala Developer to join a dynamic team working on high-impact projects. The ideal candidate will have strong expertise in Scala and Play Framework, with a passion for building robust, scalable backend services and APIs. This is a fully remote contract role with an immediate start. Key Responsibilities * Design, develop, and maintain backend services and APIs using Scala and Play Framework. * Implement RESTful endpoints, manage request/response lifecycle, and handle authentication/authorization flows. * Write clean, idiomatic Scala code and apply functional programming principles where appropriate. * Develop and maintain automated tests (unit and integration) and support test automation initiatives. * Collaborate with product owners, UX designers, QA, and other engineers in an Agile environment (Scrum/Kanban).
Role Overview - We are seeking an experienced Scala Developer to join a dynamic team working on high-impact projects. The ideal candidate will have strong expertise in Scala and Play Framework, with a passion for building robust, scalable backend services and APIs. This is a fully remote contract role with an immediate start. Key Responsibilities * Design, develop, and maintain backend services and APIs using Scala and Play Framework. * Implement RESTful endpoints, manage request/response lifecycle, and handle authentication/authorization flows. * Write clean, idiomatic Scala code and apply functional programming principles where appropriate. * Develop and maintain automated tests (unit and integration) and support test automation initiatives. * Collaborate with product owners, UX designers, QA, and other engineers in an Agile environment (Scrum/Kanban).
Full Stack - Ruby on Rails, React - Up to £120k DOE - Fully Remote - must be UK based - A fast-growing sports tech company building high-performance, data-driven products for a rapidly expanding global audience is searching for a Lead Full Stack Engineer. This is a pivotal role for an experienced engineer who thrives on shaping architecture, driving technical direction, and still remaining hands-on in the codebase. As a technical leader within a cross-functional Product Team, you'll influence the long-term engineering strategy, guide architectural decisions, and ensure the platform scales reliably as our user base grows. You'll act as a role model for engineering excellence - mentoring others, elevating standards, and collaborating closely with Product, Design, and Customer Success to build tools our customers truly value. Tech Stack: Ruby on Rails, React, React Nativ
Full Stack - Ruby on Rails, React - Up to £120k DOE - Fully Remote - must be UK based - A fast-growing sports tech company building high-performance, data-driven products for a rapidly expanding global audience is searching for a Lead Full Stack Engineer. This is a pivotal role for an experienced engineer who thrives on shaping architecture, driving technical direction, and still remaining hands-on in the codebase. As a technical leader within a cross-functional Product Team, you'll influence the long-term engineering strategy, guide architectural decisions, and ensure the platform scales reliably as our user base grows. You'll act as a role model for engineering excellence - mentoring others, elevating standards, and collaborating closely with Product, Design, and Customer Success to build tools our customers truly value. Tech Stack: Ruby on Rails, React, React Nativ
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Palantir Foundry Lead Consultant - Lead architect and hands-on technical owner for Palantir Foundry implementations. You will design and build production-grade data and application workflows on Foundry, own technical decisions end-to-end and work directly with senior stakeholders while mentoring engineering teams. Core Responsibilities - Foundry Solution Architecture & Build - o Data integration (Pipeline Builder/code-based pipelines, connectors, incremental loads). o Ontology modelling (object/relationship design, semantics, versioning). o Application layer (Workshop, Code Repositories, OSDK/APIs, Actions, AIP/agentic workflows). * Define and implement patterns for data modelling, transformation, and lineage tracking. * Design permission models (RBAC/ABAC), object-level security and auditability. * Implement CI/CD and environment promotion strategies for Foundry arte
Palantir Foundry Lead Consultant - Lead architect and hands-on technical owner for Palantir Foundry implementations. You will design and build production-grade data and application workflows on Foundry, own technical decisions end-to-end and work directly with senior stakeholders while mentoring engineering teams. Core Responsibilities - Foundry Solution Architecture & Build - o Data integration (Pipeline Builder/code-based pipelines, connectors, incremental loads). o Ontology modelling (object/relationship design, semantics, versioning). o Application layer (Workshop, Code Repositories, OSDK/APIs, Actions, AIP/agentic workflows). * Define and implement patterns for data modelling, transformation, and lineage tracking. * Design permission models (RBAC/ABAC), object-level security and auditability. * Implement CI/CD and environment promotion strategies for Foundry arte
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£70000 GBP - Remote WORKING Type: Permanent - Location: Ireland preferred | Remote (UK-based, excluding London) Salary: £60,000 - £70,000 - Work Type: Full-flex hybrid - About the Company - This is your chance to join a fast-growing, award-winning SaaS company that's redefining how mobile workforces operate. With over a decade of experience and a strong customer base across industries like construction, safety, and field services, this organisation is a true homegrown success story. As part of a larger tech group, they offer a unique combination of software and hardware solutions, giving clients a comprehensive digital transformation experience. Their platform is trusted by hundreds of businesses to streamline operations and empower teams in the field. Why You'll Want to Work Here * Recognised for product innovation and customer support excellence
£70000 GBP - Remote WORKING Type: Permanent - Location: Ireland preferred | Remote (UK-based, excluding London) Salary: £60,000 - £70,000 - Work Type: Full-flex hybrid - About the Company - This is your chance to join a fast-growing, award-winning SaaS company that's redefining how mobile workforces operate. With over a decade of experience and a strong customer base across industries like construction, safety, and field services, this organisation is a true homegrown success story. As part of a larger tech group, they offer a unique combination of software and hardware solutions, giving clients a comprehensive digital transformation experience. Their platform is trusted by hundreds of businesses to streamline operations and empower teams in the field. Why You'll Want to Work Here * Recognised for product innovation and customer support excellence
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Job Description - Technology Lead - A competitive salary including annual performance bonus, car/travel allowance of £8000 per annum and private medical healthcare. Permanent, Hybrid contract with the requirement to work from the Ashford, Kent office 2-3 times per month. Occasional travel across Europe will also be required. Reporting to the Technology Strategy Director, the European Pricing Functional Lead will be responsible for the development and delivery of the technology roadmap for the Pricing function. The primary objective of this role is to align Pricing capabilities to agreed Technology products/solutions across Sysco Europe and overseeing the associated Pricing Technology product development lifecycles in both large and small-scale change. The role involves partnering with cross-functional stakeholders in both local and European markets, to ensure function
Job Description - Technology Lead - A competitive salary including annual performance bonus, car/travel allowance of £8000 per annum and private medical healthcare. Permanent, Hybrid contract with the requirement to work from the Ashford, Kent office 2-3 times per month. Occasional travel across Europe will also be required. Reporting to the Technology Strategy Director, the European Pricing Functional Lead will be responsible for the development and delivery of the technology roadmap for the Pricing function. The primary objective of this role is to align Pricing capabilities to agreed Technology products/solutions across Sysco Europe and overseeing the associated Pricing Technology product development lifecycles in both large and small-scale change. The role involves partnering with cross-functional stakeholders in both local and European markets, to ensure function
Lead .NET/C# Developer - 12 Month Remote Contract (Inside IR35)
Lead .NET/C# Developer - 12 Month Remote Contract (Inside IR35)
Stealth IT Consulting Limited
UK
£475 per day £475 per day (Inside IR35)
Azure API Management
Azure API Management
Senior Software Developer (BPSS Cleared) - Contract (Remote UK)
Senior Software Developer (BPSS Cleared) - Contract (Remote UK)
Stealth IT Consulting Limited
UK
£380 per day £380 per day
Configure and manage API gateways and reverse proxies using Kong (CE/EE) and Nginx.
Configure and manage API gateways and reverse proxies using Kong (CE/EE) and Nginx.
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A good understanding of API design (REST or GraphQL) and relational databases
A good understanding of API design (REST or GraphQL) and relational databases
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Architect modern EDI, API, and event-driven integration frameworks that leverage AI, LLMs, and automation for intelligent partner connectivity. * Lead solution design and implementation for B2B messaging, EDI, and API-based integrations, supporting business functions such as Procurement, Order Management, Supply Chain, and Finance.
Architect modern EDI, API, and event-driven integration frameworks that leverage AI, LLMs, and automation for intelligent partner connectivity. * Lead solution design and implementation for B2B messaging, EDI, and API-based integrations, supporting business functions such as Procurement, Order Management, Supply Chain, and Finance.
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Implement single sign-on and API authentication in WorkForces suite and on-premises environments.
Implement single sign-on and API authentication in WorkForces suite and on-premises environments.
Expert knowledge of HTML, CSS, JavaScript Experience developing Frontend Application using Modern Javascript frameworks like React/Vue/Svelte/Angular Writing unit tests with modern front end testing frameworks like Jest Experience of consuming and modifying CI/CD pipelines Experience working with API of varying types and integrating with backend data Experience of working with cloud technologies (Azure/AWS) Capable of teaching/mentoring/pair-programming with other members of the team - Experience of Docker Experience of working in a Continuous Delivery or Deployment environment Experience of developing any backend API frameworks * Experience working with API of varying types and integrating with backend data * Experience of developing any backend API frameworks
Expert knowledge of HTML, CSS, JavaScript Experience developing Frontend Application using Modern Javascript frameworks like React/Vue/Svelte/Angular Writing unit tests with modern front end testing frameworks like Jest Experience of consuming and modifying CI/CD pipelines Experience working with API of varying types and integrating with backend data Experience of working with cloud technologies (Azure/AWS) Capable of teaching/mentoring/pair-programming with other members of the team - Experience of Docker Experience of working in a Continuous Delivery or Deployment environment Experience of developing any backend API frameworks * Experience working with API of varying types and integrating with backend data * Experience of developing any backend API frameworks
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Proven experience with API development and integration
Proven experience with API development and integration
You will be an expert in Mulesoft, API design, development and management, demonstrating significant expertise in the terms of integrations within an enterprise environment and fast-moving organisation. * Implement and promote best practices for modern API-led connectivity. * Proven experience with MuleSoft integration technologies, including Mule 4 runtime and DataWeave, and hands-on expertise across the Anypoint Platform encompassing CloudHub 2.0, API Manager, Runtime Manager, Anypoint Exchange, Design Center, Anypoint Studio, and Anypoint Code Builder. * In depth knowledge of best practices in API management in terms of performance and security (e.g. OAuth 2.0, JWT, TLS, encryption)
You will be an expert in Mulesoft, API design, development and management, demonstrating significant expertise in the terms of integrations within an enterprise environment and fast-moving organisation. * Implement and promote best practices for modern API-led connectivity. * Proven experience with MuleSoft integration technologies, including Mule 4 runtime and DataWeave, and hands-on expertise across the Anypoint Platform encompassing CloudHub 2.0, API Manager, Runtime Manager, Anypoint Exchange, Design Center, Anypoint Studio, and Anypoint Code Builder. * In depth knowledge of best practices in API management in terms of performance and security (e.g. OAuth 2.0, JWT, TLS, encryption)
Experience with PlayStation SDK/API, TRC, Network features.
Experience with PlayStation SDK/API, TRC, Network features.
As part of the strategy around GoCompare's acquisition by Future, we're putting in a technology roadmap for re-platforming our domain around an API-first, cloud-based serverless architecture to become the leading PCW service. * Integration Expertise: Experience with integrating SFMC (Marketing cloud connect) with other Salesforce clouds (like Sales Cloud and Service Cloud) and external systems via API and SFTP protocols.
As part of the strategy around GoCompare's acquisition by Future, we're putting in a technology roadmap for re-platforming our domain around an API-first, cloud-based serverless architecture to become the leading PCW service. * Integration Expertise: Experience with integrating SFMC (Marketing cloud connect) with other Salesforce clouds (like Sales Cloud and Service Cloud) and external systems via API and SFTP protocols.
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APIs: Understanding of RESTful API design and development.
APIs: Understanding of RESTful API design and development.
Create and maintain API and data integrations between ServiceNow and other services.
Create and maintain API and data integrations between ServiceNow and other services.
Software Consulting Engineer – T&D Configuration Systems & Software Solutions
Software Consulting Engineer – T&D Configuration Systems & Software Solutions
GE Vernova
UK
Competitive
Drive the integration IEC 61850 engineering workflows (SCL-based ICD, SCD, SSD) into intuitive, automated tooling ecosystems aligned with modern UI/UX, API design, and utility integration requirements. * Knowledge of data modeling, API integration, network communications, and cybersecurity practices.
Drive the integration IEC 61850 engineering workflows (SCL-based ICD, SCD, SSD) into intuitive, automated tooling ecosystems aligned with modern UI/UX, API design, and utility integration requirements. * Knowledge of data modeling, API integration, network communications, and cybersecurity practices.
Define Architectural Strategy: Use strong system and API design skills to make decisive architectural choices, ensuring our solutions are robust, scalable, and efficient
Define Architectural Strategy: Use strong system and API design skills to make decisive architectural choices, ensuring our solutions are robust, scalable, and efficient
AWS API Gateway
AWS API Gateway
Evolving our API layer and backend domain models to support new product features.
Evolving our API layer and backend domain models to support new product features.
In depth experience with Vue.js, React or other modern JavaScript frameworks, with expertise in GraphQL for API integration and data management
In depth experience with Vue.js, React or other modern JavaScript frameworks, with expertise in GraphQL for API integration and data management
Welcome to Haleon. Were a purpose-driven, world-class consumer company putting everyday health in the hands of millions. In just three years since our launch, weve grown, evolved and are now entering an exciting new chapter one filled with bold ambitions and enormous opportunity. Our trusted portfolio of brands including Sensodyne, Panadol, Advil, Voltaren, Theraflu, Otrivin, and Centrum lead in resilient and growing categories. What sets us apart is our unique blend of deep human understanding and trusted science. Now its time to fully realise the full potential of our business and our people. We do this through our Win as One strategy. It puts our purpose to deliver better everyday health with humanity at the heart of everything we do. It unites us, inspires us, and challenges us to be better every day, driven by our agile, performance-focused culture. About the rol
Welcome to Haleon. Were a purpose-driven, world-class consumer company putting everyday health in the hands of millions. In just three years since our launch, weve grown, evolved and are now entering an exciting new chapter one filled with bold ambitions and enormous opportunity. Our trusted portfolio of brands including Sensodyne, Panadol, Advil, Voltaren, Theraflu, Otrivin, and Centrum lead in resilient and growing categories. What sets us apart is our unique blend of deep human understanding and trusted science. Now its time to fully realise the full potential of our business and our people. We do this through our Win as One strategy. It puts our purpose to deliver better everyday health with humanity at the heart of everything we do. It unites us, inspires us, and challenges us to be better every day, driven by our agile, performance-focused culture. About the rol