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483 Permanent API jobs in South East + 20 miles
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Job Title: Product Security Architect (Contract) Location: UK-based / Remote - Contract: 3 months initially, Outside IR35 - Why Apply? This is an opportunity to play a key role in shaping Product Security for an international technology organisation. The role offers exposure to a federated environment across multiple business units, providing strategic influence and hands on technical impact. * Define, lead, and evolve a group-wide Product Security and Secure SSDLC strategy across all business units. * Assess current AppSec capabilities, identify gaps, and implement practical, scalable improvements. * Collaborate with Product Architects, engineering, and security teams to integrate security into GitHub, CI/CD pipelines, and development workflows. * Provide architecture guidance and implement secure coding practices, threat modelling, and security tooling.
Job Title: Product Security Architect (Contract) Location: UK-based / Remote - Contract: 3 months initially, Outside IR35 - Why Apply? This is an opportunity to play a key role in shaping Product Security for an international technology organisation. The role offers exposure to a federated environment across multiple business units, providing strategic influence and hands on technical impact. * Define, lead, and evolve a group-wide Product Security and Secure SSDLC strategy across all business units. * Assess current AppSec capabilities, identify gaps, and implement practical, scalable improvements. * Collaborate with Product Architects, engineering, and security teams to integrate security into GitHub, CI/CD pipelines, and development workflows. * Provide architecture guidance and implement secure coding practices, threat modelling, and security tooling.
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Location -We are flexible: onsite, hybrid or fully remote, depending on what works for you and the client, UK or Netherlands based. What you will actually be doing - This is not a role where you build clever models that never get used. Your focus is on creating measurable value for clients using data science, machine learning and GenAI, in a consulting and advisory context. You will own work from the very beginning, asking questions like "What value are we trying to create here?" and "Is this the right problem to solve?" through to "It is live, stakeholders are using it and we can see the impact in the numbers." You will work fairly independently and you will also be someone that more junior team members look to for help and direction. A big part of the job is taking messy, ambiguous business and technical problems and turning them into clear, valuable solutions that
Location -We are flexible: onsite, hybrid or fully remote, depending on what works for you and the client, UK or Netherlands based. What you will actually be doing - This is not a role where you build clever models that never get used. Your focus is on creating measurable value for clients using data science, machine learning and GenAI, in a consulting and advisory context. You will own work from the very beginning, asking questions like "What value are we trying to create here?" and "Is this the right problem to solve?" through to "It is live, stakeholders are using it and we can see the impact in the numbers." You will work fairly independently and you will also be someone that more junior team members look to for help and direction. A big part of the job is taking messy, ambiguous business and technical problems and turning them into clear, valuable solutions that
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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Role: Developer - Tech Stack: .NET, C#, AWS, MongoDB - IR35 Status: Outside IR35 - Day Rate: £400.00 - Location: Remote - Contract Length: 3 Months (highly likely to extend to 6 Months+) Start Date: Immediate - We are seeking a Developer to join the agile delivery team supporting the development of a major government digital platform. You will be responsible for developing secure, performant, and maintainable features, working across both front-end and back-end elements of the system. This role is suitable for developers with a strong foundation in .NET and cloud-native engineering, and offers scope to grow technical ownership within a supportive, delivery-focused team. You'll be working in an environment that values collaboration, learning, and continuous improvement. Key Responsibilities * Design, build, test, and deploy robust software components using modern devel
Role: Developer - Tech Stack: .NET, C#, AWS, MongoDB - IR35 Status: Outside IR35 - Day Rate: £400.00 - Location: Remote - Contract Length: 3 Months (highly likely to extend to 6 Months+) Start Date: Immediate - We are seeking a Developer to join the agile delivery team supporting the development of a major government digital platform. You will be responsible for developing secure, performant, and maintainable features, working across both front-end and back-end elements of the system. This role is suitable for developers with a strong foundation in .NET and cloud-native engineering, and offers scope to grow technical ownership within a supportive, delivery-focused team. You'll be working in an environment that values collaboration, learning, and continuous improvement. Key Responsibilities * Design, build, test, and deploy robust software components using modern devel
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
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
PREMIUM
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
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.
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.
Experience of API's
Experience of API's
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
Blue Light Card. Individually great, together unstoppable - The Role and the Team - At Blue Light Card, were opening up multiple opportunities for Full Stack Engineers to join our growing Engineering team. Were committed to building meaningful digital experiences that support millions of frontline workers across the UK. Following our recent replatforming, weve created space for new ideas, greenfield development, and opportunities for engineers who want to genuinely influence the products they build. Youll work within an agile, supportive squad where collaboration is key. Our teams partner closely with Product, Design, and Data to deliver features that enhance personalisation, engagement, and the overall member experience, while giving you room to grow, experiment, and take ownership. What Youll Do * Develop high-quality applications across our modern full-stack enviro
Blue Light Card. Individually great, together unstoppable - The Role and the Team - At Blue Light Card, were opening up multiple opportunities for Full Stack Engineers to join our growing Engineering team. Were committed to building meaningful digital experiences that support millions of frontline workers across the UK. Following our recent replatforming, weve created space for new ideas, greenfield development, and opportunities for engineers who want to genuinely influence the products they build. Youll work within an agile, supportive squad where collaboration is key. Our teams partner closely with Product, Design, and Data to deliver features that enhance personalisation, engagement, and the overall member experience, while giving you room to grow, experiment, and take ownership. What Youll Do * Develop high-quality applications across our modern full-stack enviro
GitLab is an open-core software company that develops the most comprehensive AI-powered DevSecOps Platform, used by more than 100,000 organizations. Our mission is to enable everyone to contribute to and co-create the software that powers our world. When everyone can contribute, consumers become contributors, significantly accelerating human progress. Our platform unites teams and organizations, breaking down barriers and redefining what's possible in software development. Thanks to products like Duo Enterprise and Duo Agent Platform, customers get AI benefits at every stage of the SDLC. The same principles built into our products are reflected in how our team works: we embrace AI as a core productivity multiplier, with all team members expected to incorporate AI into their daily workflows to drive efficiency, innovation, and impact.
GitLab is an open-core software company that develops the most comprehensive AI-powered DevSecOps Platform, used by more than 100,000 organizations. Our mission is to enable everyone to contribute to and co-create the software that powers our world. When everyone can contribute, consumers become contributors, significantly accelerating human progress. Our platform unites teams and organizations, breaking down barriers and redefining what's possible in software development. Thanks to products like Duo Enterprise and Duo Agent Platform, customers get AI benefits at every stage of the SDLC. The same principles built into our products are reflected in how our team works: we embrace AI as a core productivity multiplier, with all team members expected to incorporate AI into their daily workflows to drive efficiency, innovation, and impact.
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Locations
- London
- Surrey
- City of London
- South West London
- Central London
- South East London
- Tunbridge Wells
- East London
- Dorking
- West End
- Scotland
- Birmingham
- Reading
- Hampshire
- Oxford
- Southampton
- Staffordshire
- Slough
- West Sussex
- East Anglia
- County Antrim
- Oxfordshire
- Wales
- Dundee
- Midlothian
- East Sussex
- Poole
- Cochrane Park
- Derby
- Yorkshire
- Bristol
- Greater Manchester
- Cheshire
- Gloucestershire
- Hertfordshire
- West Yorkshire
- Glasgow
- York
- Edinburgh
- Leeds
- Colchester
- North West
- Berkshire
- Merseyside
- Lancashire
- Milton Keynes
- Buckinghamshire
- West Midlands
- Abingdon
- Corsham