'API Design' Job Vacancies

226 to 250 of 481 API Design Jobs

Senior Software Engineer

Leeds, England, United Kingdom
SR2 | Socially Responsible Recruitment | Certified B Corporation™
Proven ability to lead technically by example while remaining hands-on in delivery Strong background in cloud (AWS) and infrastructure as code (Terraform) Solid understanding of SQL and database design Experience with modern frontend stacks and API design Enthusiasm for mentoring, collaboration and delivering software with impact If you’re looking for a role that blends technical More ❯
Posted:

Senior Software Engineer

bradford, yorkshire and the humber, united kingdom
SR2 | Socially Responsible Recruitment | Certified B Corporation™
Proven ability to lead technically by example while remaining hands-on in delivery Strong background in cloud (AWS) and infrastructure as code (Terraform) Solid understanding of SQL and database design Experience with modern frontend stacks and API design Enthusiasm for mentoring, collaboration and delivering software with impact If you’re looking for a role that blends technical More ❯
Posted:

Senior Python Engineer / Lead Developer (Agentic/llm systems)

United Kingdom
Cyfrin
mentorship, and maintaining the highest standards of code quality. Location : Remote Experience Level: Senior (5+ years) Commitment : Full-time Core Responsibilities Technical Leadership Make critical decisions about system architecture, design patterns, and technology choices Establish and enforce coding standards, review practices, and quality benchmarks Define and prioritize technical initiatives aligned with product goals Lead architectural discussions and drive consensus … on complex technical decisions Ensure system performance and scalability for production workloads Feature Development Design and implement core system components using modular, extensible architectures Build and maintain integrations with external APIs and services (LLM providers, databases, etc.) Develop analysis engines and processing pipelines for complex data workflows Implement testing frameworks and validation systems Optimize critical code paths and system … and advanced language features Modern package management (uv, pip, poetry) Testing frameworks (pytest, mocks, fixtures, test-driven development) Software Architecture: Experience designing modular, plugin-based systems with clean abstractions API Design: Creating intuitive interfaces and maintainable code structures Performance: Profiling, optimization, and handling large-scale data processing Version Control: Git workflows, code review practices, and collaborative development LLM More ❯
Posted:

PHP Developer

Newton Aycliffe, England, United Kingdom
Hybrid / WFH Options
NRG
such as Git. Strong problem-solving skills and a detail-oriented mindset. Ability to work independently and as part of a team. Excellent communication skills. Desirable: Experience with RESTful API design and development. Knowledge of cloud platforms like AWS or Azure. Familiarity with Agile/Scrum methodologies. Experience with DevOps tools and practices. Benefits: Excellent opportunities for development More ❯
Posted:

Technology Architect

England, United Kingdom
Harrison Holgate
comprehensive architecture solutions that integrate core business platforms with wider enterprise systems. Establish and maintain architectural standards, best practices, and governance frameworks across the organisation. Assess existing systems and design strategies for optimisation, modernisation, and scalability. Partner with engineering, operations, security, and business teams to ensure technology solutions align with strategic objectives. Provide expert guidance on broking systems, API design, system integration, security frameworks, and user experience. Translate complex business needs into clear, implementable architectural designs. Ensure high availability, security, and performance across hybrid and cloud-based environments. Stay informed on emerging technologies and market developments relevant to the insurance industry. Skills & Experience Proven experience as a Technology Architect, Solutions Architect, or in a senior technology leadership … Experience designing and delivering systems integrations using APIs, middleware, and modern data exchange approaches. Understanding of enterprise architecture frameworks (e.g. TOGAF, Zachman). Strong proficiency with Azure and contemporary design principles such as microservices and event-driven architecture. Excellent communication and stakeholder engagement skills across all levels. Familiarity with DevOps practices (CI/CD pipelines, monitoring, containerisation). Knowledge More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Integration Specialist

Stevenage, England, United Kingdom
Akkodis
shape scalable, next-generation digital ecosystems. Whether delivering sophisticated Big Data platforms, cloud solutions, or advanced infrastructure, our teams will drive innovation and digital excellence across multiple programmes. Responsibilities Design, develop, and implement integrations in AWS and Azure. Some designed for low-code environments Collaborate with business analysts and solution architects to translate business requirements into integration solutions Document … integration designs, data flows, and technical specifications clearly and comprehensively Configure and maintain API-based, event-driven, and batch integrations between SaaS and on-premise systems Ensure integrations are secure, compliant, and performant, following cloud best practices Participate in code reviews, testing, and deployment pipelines (CI/CD) for integration solutions Maintain awareness of low-code platform features and … code/no-code integration platforms such as AWS, Azure, Power Automate, or MuleSoft composer Understanding of cloud services and architectures in AWS and/or Azure Familiarity with API design and management, REST/SOAP services, and event driven architectures Experience in documenting integration solutions, data flows, and technical specifications Strong problem-solving skills and ability to More ❯
Posted:

Senior Integration Specialist

stevenage, east anglia, united kingdom
Akkodis
shape scalable, next-generation digital ecosystems. Whether delivering sophisticated Big Data platforms, cloud solutions, or advanced infrastructure, our teams will drive innovation and digital excellence across multiple programmes. Responsibilities Design, develop, and implement integrations in AWS and Azure. Some designed for low-code environments Collaborate with business analysts and solution architects to translate business requirements into integration solutions Document … integration designs, data flows, and technical specifications clearly and comprehensively Configure and maintain API-based, event-driven, and batch integrations between SaaS and on-premise systems Ensure integrations are secure, compliant, and performant, following cloud best practices Participate in code reviews, testing, and deployment pipelines (CI/CD) for integration solutions Maintain awareness of low-code platform features and … code/no-code integration platforms such as AWS, Azure, Power Automate, or MuleSoft composer Understanding of cloud services and architectures in AWS and/or Azure Familiarity with API design and management, REST/SOAP services, and event driven architectures Experience in documenting integration solutions, data flows, and technical specifications Strong problem-solving skills and ability to More ❯
Posted:

Senior Integration Specialist

watford, hertfordshire, east anglia, united kingdom
Akkodis
shape scalable, next-generation digital ecosystems. Whether delivering sophisticated Big Data platforms, cloud solutions, or advanced infrastructure, our teams will drive innovation and digital excellence across multiple programmes. Responsibilities Design, develop, and implement integrations in AWS and Azure. Some designed for low-code environments Collaborate with business analysts and solution architects to translate business requirements into integration solutions Document … integration designs, data flows, and technical specifications clearly and comprehensively Configure and maintain API-based, event-driven, and batch integrations between SaaS and on-premise systems Ensure integrations are secure, compliant, and performant, following cloud best practices Participate in code reviews, testing, and deployment pipelines (CI/CD) for integration solutions Maintain awareness of low-code platform features and … code/no-code integration platforms such as AWS, Azure, Power Automate, or MuleSoft composer Understanding of cloud services and architectures in AWS and/or Azure Familiarity with API design and management, REST/SOAP services, and event driven architectures Experience in documenting integration solutions, data flows, and technical specifications Strong problem-solving skills and ability to More ❯
Posted:

Senior Full Stack Engineer

Manchester, Lancashire, United Kingdom
Hybrid / WFH Options
UrbanChain
to help lead the next phase of growth. The Role We're looking for an experienced Full Stack Engineer to take ownership of full lifecycle development - from architecture and design through to deployment and optimisation. You'll be working across both the front and back end, collaborating with a multi-disciplinary team to build products that directly impact the … This is a hands-on, high-impact role with real autonomy and room to grow. Key Responsibilities Build and Own Develop scalable web applications using React, Next.js, and Node.js Design and maintain secure, high-performance RESTful APIs Lead architectural decisions across the full stack Own features end-to-end, from planning through to production Collaborate Work closely with UI … current with industry trends and recommend new technologies What We're Looking For Strong commercial experience with React, Next.js, Node.js, and JavaScript Solid understanding of back-end development and API design Experience working with cloud platforms (preferably AWS) Familiarity with both SQL and NoSQL databases (e.g. PostgreSQL, MongoDB) Understanding of Git, CI/CD pipelines, and secure coding More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Full Stack Engineer

Manchester Area, United Kingdom
Hybrid / WFH Options
UrbanChain
to help lead the next phase of growth. The Role We’re looking for an experienced Full Stack Engineer to take ownership of full lifecycle development — from architecture and design through to deployment and optimisation. You’ll be working across both the front and back end, collaborating with a multi-disciplinary team to build products that directly impact the … This is a hands-on, high-impact role with real autonomy and room to grow. Key Responsibilities Build and Own Develop scalable web applications using React, Next.js, and Node.js Design and maintain secure, high-performance RESTful APIs Lead architectural decisions across the full stack Own features end-to-end, from planning through to production Collaborate Work closely with UI … current with industry trends and recommend new technologies What We’re Looking For Strong commercial experience with React, Next.js, Node.js, and JavaScript Solid understanding of back-end development and API design Experience working with cloud platforms (preferably AWS) Familiarity with both SQL and NoSQL databases (e.g. PostgreSQL, MongoDB) Understanding of Git, CI/CD pipelines, and secure coding More ❯
Posted:

Senior Full Stack Engineer

bolton, greater manchester, north west england, united kingdom
Hybrid / WFH Options
UrbanChain
to help lead the next phase of growth. The Role We’re looking for an experienced Full Stack Engineer to take ownership of full lifecycle development — from architecture and design through to deployment and optimisation. You’ll be working across both the front and back end, collaborating with a multi-disciplinary team to build products that directly impact the … This is a hands-on, high-impact role with real autonomy and room to grow. Key Responsibilities Build and Own Develop scalable web applications using React, Next.js, and Node.js Design and maintain secure, high-performance RESTful APIs Lead architectural decisions across the full stack Own features end-to-end, from planning through to production Collaborate Work closely with UI … current with industry trends and recommend new technologies What We’re Looking For Strong commercial experience with React, Next.js, Node.js, and JavaScript Solid understanding of back-end development and API design Experience working with cloud platforms (preferably AWS) Familiarity with both SQL and NoSQL databases (e.g. PostgreSQL, MongoDB) Understanding of Git, CI/CD pipelines, and secure coding More ❯
Posted:

Senior Full Stack Engineer

warrington, cheshire, north west england, united kingdom
Hybrid / WFH Options
UrbanChain
to help lead the next phase of growth. The Role We’re looking for an experienced Full Stack Engineer to take ownership of full lifecycle development — from architecture and design through to deployment and optimisation. You’ll be working across both the front and back end, collaborating with a multi-disciplinary team to build products that directly impact the … This is a hands-on, high-impact role with real autonomy and room to grow. Key Responsibilities Build and Own Develop scalable web applications using React, Next.js, and Node.js Design and maintain secure, high-performance RESTful APIs Lead architectural decisions across the full stack Own features end-to-end, from planning through to production Collaborate Work closely with UI … current with industry trends and recommend new technologies What We’re Looking For Strong commercial experience with React, Next.js, Node.js, and JavaScript Solid understanding of back-end development and API design Experience working with cloud platforms (preferably AWS) Familiarity with both SQL and NoSQL databases (e.g. PostgreSQL, MongoDB) Understanding of Git, CI/CD pipelines, and secure coding More ❯
Posted:

Senior Python Backend Engineer

City of London, London, United Kingdom
Hybrid / WFH Options
Infoplus Technologies UK Limited
based applications that leverage generative AI capabilities. This hands-on position requires deep technical expertise to translate business needs into robust, scalable, and intelligent software solutions. Key responsibilities: Software Design & Development: Design, develop, and maintain high-quality, scalable, and efficient software applications and services. Write clean, well-documented, and maintainable code following established best practices. Translate complex business … requirements into detailed technical specifications, architectural designs, and API contracts. Create and implement microservice architectures via APIs and services, ensuring seamless integration and data flow. GenAI Application Development: Develop and integrate advanced Generative AI models and Agentic AI approaches into new and existing applications. Optimize application code and architecture for performance, scalability, security, and cost-effectiveness. Work with data … engineers, to deliver features iteratively. Participate actively in agile ceremonies (e.g., stand-ups, sprint planning, retrospectives). Create and maintain comprehensive technical documentation, including code documentation, system designs, and API specifications. Security & Compliance (Application Layer): Ensure all software solutions adhere to secure coding practices, data privacy regulations, and compliance standards. Implement robust security measures within the application code, including More ❯
Posted:

Senior Python Backend Engineer

South East, United Kingdom
Hybrid / WFH Options
Infoplus Technologies UK Limited
based applications that leverage generative AI capabilities. This hands-on position requires deep technical expertise to translate business needs into robust, scalable, and intelligent software solutions. Key responsibilities: Software Design & Development: Design, develop, and maintain high-quality, scalable, and efficient software applications and services. Write clean, well-documented, and maintainable code following established best practices. Translate complex business … requirements into detailed technical specifications, architectural designs, and API contracts. Create and implement microservice architectures via APIs and services, ensuring seamless integration and data flow. GenAI Application Development: Develop and integrate advanced Generative AI models and Agentic AI approaches into new and existing applications. Optimize application code and architecture for performance, scalability, security, and cost-effectiveness. Work with data … engineers, to deliver features iteratively. Participate actively in agile ceremonies (e.g., stand-ups, sprint planning, retrospectives). Create and maintain comprehensive technical documentation, including code documentation, system designs, and API specifications. Security & Compliance (Application Layer): Ensure all software solutions adhere to secure coding practices, data privacy regulations, and compliance standards. Implement robust security measures within the application code, including More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Python Backend Engineer

london, south east england, united kingdom
Hybrid / WFH Options
Infoplus Technologies UK Limited
based applications that leverage generative AI capabilities. This hands-on position requires deep technical expertise to translate business needs into robust, scalable, and intelligent software solutions. Key responsibilities: Software Design & Development: Design, develop, and maintain high-quality, scalable, and efficient software applications and services. Write clean, well-documented, and maintainable code following established best practices. Translate complex business … requirements into detailed technical specifications, architectural designs, and API contracts. Create and implement microservice architectures via APIs and services, ensuring seamless integration and data flow. GenAI Application Development: Develop and integrate advanced Generative AI models and Agentic AI approaches into new and existing applications. Optimize application code and architecture for performance, scalability, security, and cost-effectiveness. Work with data … engineers, to deliver features iteratively. Participate actively in agile ceremonies (e.g., stand-ups, sprint planning, retrospectives). Create and maintain comprehensive technical documentation, including code documentation, system designs, and API specifications. Security & Compliance (Application Layer): Ensure all software solutions adhere to secure coding practices, data privacy regulations, and compliance standards. Implement robust security measures within the application code, including More ❯
Posted:

Senior Python Backend Engineer

slough, south east england, united kingdom
Hybrid / WFH Options
Infoplus Technologies UK Limited
based applications that leverage generative AI capabilities. This hands-on position requires deep technical expertise to translate business needs into robust, scalable, and intelligent software solutions. Key responsibilities: Software Design & Development: Design, develop, and maintain high-quality, scalable, and efficient software applications and services. Write clean, well-documented, and maintainable code following established best practices. Translate complex business … requirements into detailed technical specifications, architectural designs, and API contracts. Create and implement microservice architectures via APIs and services, ensuring seamless integration and data flow. GenAI Application Development: Develop and integrate advanced Generative AI models and Agentic AI approaches into new and existing applications. Optimize application code and architecture for performance, scalability, security, and cost-effectiveness. Work with data … engineers, to deliver features iteratively. Participate actively in agile ceremonies (e.g., stand-ups, sprint planning, retrospectives). Create and maintain comprehensive technical documentation, including code documentation, system designs, and API specifications. Security & Compliance (Application Layer): Ensure all software solutions adhere to secure coding practices, data privacy regulations, and compliance standards. Implement robust security measures within the application code, including More ❯
Posted:

Senior Python Backend Engineer

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Infoplus Technologies UK Limited
based applications that leverage generative AI capabilities. This hands-on position requires deep technical expertise to translate business needs into robust, scalable, and intelligent software solutions. Key responsibilities: Software Design & Development: Design, develop, and maintain high-quality, scalable, and efficient software applications and services. Write clean, well-documented, and maintainable code following established best practices. Translate complex business … requirements into detailed technical specifications, architectural designs, and API contracts. Create and implement microservice architectures via APIs and services, ensuring seamless integration and data flow. GenAI Application Development: Develop and integrate advanced Generative AI models and Agentic AI approaches into new and existing applications. Optimize application code and architecture for performance, scalability, security, and cost-effectiveness. Work with data … engineers, to deliver features iteratively. Participate actively in agile ceremonies (e.g., stand-ups, sprint planning, retrospectives). Create and maintain comprehensive technical documentation, including code documentation, system designs, and API specifications. Security & Compliance (Application Layer): Ensure all software solutions adhere to secure coding practices, data privacy regulations, and compliance standards. Implement robust security measures within the application code, including More ❯
Posted:

Full Stack Engineer

City of London, London, United Kingdom
Kureos
SaaS platforms. You’ll help shape architecture, deliver new features end-to-end, and contribute to technical strategy in a lean, high-calibre engineering team. What You’ll Do Design and build scalable backend and fullstack solutions in Node.js, TypeScript, React, AWS Collaborate closely on architecture, data models, and API design (REST, GraphQL, tRPC, WebSockets) Balance speed … in Node.js and React ; strong TypeScript skills Solid understanding of modern DevOps (Docker, AWS, CI/CD, Kubernetes a plus) Pragmatic engineer who values collaboration, clean code, and thoughtful design Join a team where product excellence, autonomy, and technical craftsmanship drive everything. More ❯
Posted:

Full Stack Engineer

London Area, United Kingdom
Kureos
SaaS platforms. You’ll help shape architecture, deliver new features end-to-end, and contribute to technical strategy in a lean, high-calibre engineering team. What You’ll Do Design and build scalable backend and fullstack solutions in Node.js, TypeScript, React, AWS Collaborate closely on architecture, data models, and API design (REST, GraphQL, tRPC, WebSockets) Balance speed … in Node.js and React ; strong TypeScript skills Solid understanding of modern DevOps (Docker, AWS, CI/CD, Kubernetes a plus) Pragmatic engineer who values collaboration, clean code, and thoughtful design Join a team where product excellence, autonomy, and technical craftsmanship drive everything. More ❯
Posted:

Full Stack Engineer

london, south east england, united kingdom
Kureos
SaaS platforms. You’ll help shape architecture, deliver new features end-to-end, and contribute to technical strategy in a lean, high-calibre engineering team. What You’ll Do Design and build scalable backend and fullstack solutions in Node.js, TypeScript, React, AWS Collaborate closely on architecture, data models, and API design (REST, GraphQL, tRPC, WebSockets) Balance speed … in Node.js and React ; strong TypeScript skills Solid understanding of modern DevOps (Docker, AWS, CI/CD, Kubernetes a plus) Pragmatic engineer who values collaboration, clean code, and thoughtful design Join a team where product excellence, autonomy, and technical craftsmanship drive everything. More ❯
Posted:

Full Stack Engineer

london (city of london), south east england, united kingdom
Kureos
SaaS platforms. You’ll help shape architecture, deliver new features end-to-end, and contribute to technical strategy in a lean, high-calibre engineering team. What You’ll Do Design and build scalable backend and fullstack solutions in Node.js, TypeScript, React, AWS Collaborate closely on architecture, data models, and API design (REST, GraphQL, tRPC, WebSockets) Balance speed … in Node.js and React ; strong TypeScript skills Solid understanding of modern DevOps (Docker, AWS, CI/CD, Kubernetes a plus) Pragmatic engineer who values collaboration, clean code, and thoughtful design Join a team where product excellence, autonomy, and technical craftsmanship drive everything. More ❯
Posted:

Full Stack Engineer

slough, south east england, united kingdom
Kureos
SaaS platforms. You’ll help shape architecture, deliver new features end-to-end, and contribute to technical strategy in a lean, high-calibre engineering team. What You’ll Do Design and build scalable backend and fullstack solutions in Node.js, TypeScript, React, AWS Collaborate closely on architecture, data models, and API design (REST, GraphQL, tRPC, WebSockets) Balance speed … in Node.js and React ; strong TypeScript skills Solid understanding of modern DevOps (Docker, AWS, CI/CD, Kubernetes a plus) Pragmatic engineer who values collaboration, clean code, and thoughtful design Join a team where product excellence, autonomy, and technical craftsmanship drive everything. More ❯
Posted:

Software Engineer

London Area, United Kingdom
Hybrid / WFH Options
Anson McCade
is a hands-on position where you’ll take ownership of critical systems, influence architecture, and help drive technical excellence across the stack. You’ll work closely with product, design, and fellow engineers to build clean, reliable, and scalable systems that underpin financial workflows and payment infrastructure. What You’ll Bring 5+ years of commercial software engineering experience Proven … in SaaS or payment systems Strong proficiency in full-stack development using an object-oriented backend language (.NET) and a modern JavaScript framework (ideally React) Solid understanding of databases , API design , and web architecture Experience with cloud platforms (AWS, Azure, or GCP) Strong engineering fundamentals: clean code, testing, CI/CD, version control (Git) A proactive, ownership-driven More ❯
Posted:

Software Engineer

City of London, London, United Kingdom
Hybrid / WFH Options
Anson McCade
is a hands-on position where you’ll take ownership of critical systems, influence architecture, and help drive technical excellence across the stack. You’ll work closely with product, design, and fellow engineers to build clean, reliable, and scalable systems that underpin financial workflows and payment infrastructure. What You’ll Bring 5+ years of commercial software engineering experience Proven … in SaaS or payment systems Strong proficiency in full-stack development using an object-oriented backend language (.NET) and a modern JavaScript framework (ideally React) Solid understanding of databases , API design , and web architecture Experience with cloud platforms (AWS, Azure, or GCP) Strong engineering fundamentals: clean code, testing, CI/CD, version control (Git) A proactive, ownership-driven More ❯
Posted:

Senior Python Backend Engineer

London, United Kingdom
Hybrid / WFH Options
Infoplus Technologies UK Ltd
based applications that leverage generative AI capabilities. This hands-on position requires deep technical expertise to translate business needs into robust, scalable, and intelligent software solutions. Your responsibilities: Software Design & Development: Design, develop, and maintain high-quality, scalable, and efficient software applications and services. Write clean, well-documented, and maintainable code following established best practices. Translate complex business … requirements into detailed technical specifications, architectural designs, and API contracts. Create and implement microservice architectures via APIs and services, ensuring seamless integration and data flow. GenAI Application Development: Develop and integrate advanced Generative AI models and Agentic AI approaches into new and existing applications. Optimize application code and architecture for performance, scalability, security, and cost-effectiveness. Work with data … engineers, to deliver features iteratively. Participate actively in agile ceremonies (e.g., stand-ups, sprint planning, retrospectives). Create and maintain comprehensive technical documentation, including code documentation, system designs, and API specifications. Security & Compliance (Application Layer): Ensure all software solutions adhere to secure coding practices, data privacy regulations, and compliance standards. Implement robust security measures within the application code, including More ❯
Employment Type: Contract, Work From Home
Rate: From £450 to £500 per day
Posted:
API Design
10th Percentile
£52,500
25th Percentile
£61,250
Median
£75,000
75th Percentile
£100,000
90th Percentile
£132,500