51 to 75 of 220 API Design Jobs in the UK excluding London

a standard backend role. We are seeking a foundational engineer to own our single greatest strategic asset: our unique, privileged access to network-level intelligence via the GSMA CAMARA API standard. This is our “right to win”, and you will be the engineer responsible for building the bridge to it. You will be the Critical Path Owner for Track … Key Responsibilities Telco Integration & Architecture Own and build the Security Signal Ingestion path, the secure, low-latency, and out-of-band data channel connecting to our founding members' network API gateways. Architect and implement a carrier-agnostic, vendor-agnostic connector layer to consume RESTful APIs from a heterogeneous global landscape of telco partners and IMS vendors (e.g., Nokia, Ericsson … technical liaison to the engineering teams at our telco founders (Deutsche Telekom, Singtel, SKT, etc.), working “hand-in-glove” to navigate, validate, and productionize their new CAMARA network APIs. Design and build the high-throughput microservices that will query, ingest, normalize, and cache network signals (e.g., sim-swap, device-roaming-status) to be used in our real-time Scam More ❯

a standard backend role. We are seeking a foundational engineer to own our single greatest strategic asset: our unique, privileged access to network-level intelligence via the GSMA CAMARA API standard. This is our “right to win”, and you will be the engineer responsible for building the bridge to it. You will be the Critical Path Owner for Track … Key Responsibilities Telco Integration & Architecture Own and build the Security Signal Ingestion path, the secure, low-latency, and out-of-band data channel connecting to our founding members' network API gateways. Architect and implement a carrier-agnostic, vendor-agnostic connector layer to consume RESTful APIs from a heterogeneous global landscape of telco partners and IMS vendors (e.g., Nokia, Ericsson … technical liaison to the engineering teams at our telco founders (Deutsche Telekom, Singtel, SKT, etc.), working “hand-in-glove” to navigate, validate, and productionize their new CAMARA network APIs. Design and build the high-throughput microservices that will query, ingest, normalize, and cache network signals (e.g., sim-swap, device-roaming-status) to be used in our real-time Scam More ❯

We’re Looking For A strong communicator and a true team player, you'll bring experience in most of the following: Tech Stack C# .NET Core React & TypeScript Web API Docker/Kubernetes AWS or Azure Git SQL/NoSQL Ways of Working Agile/Scrum TDD, CI/CD, DevOps SOLID principles RESTful API design What More ❯

different stages of the Software Development Life Cycle including Requirements Elicitation, Application Architecture definition and Design. You will play an important role in creating the Architecture and high level design artifacts. You will guide the team technically and work closely with offshore team acting as a communication medium between the client and offshore. You will be part of a … teamwork and collaboration are encouraged, excellence is rewarded, and diversity is respected and valued. Define architecture and technical standards for Angular-based web applications and related component libraries. Architect, design and review .NET Core microservices (API design, messaging, resiliency, CI/CD) deployed to Azure (App Services, Containerization, Functions, Service Bus, Cosmos/SQL, APIM). Specify … native mobile app architecture patterns and guidelines for SwiftUI (iOS) and Jetpack Compose (Android), including shared data, offline sync, feature flagging, and CI pipelines. Own and evolve the design system: components, tokens, theming, versioning, and cross-platform implementation patterns. Ensure WCAG 2.2 accessibility compliance across web and mobile UIs; Drive browser performance strategy: metrics (LCP, CLS, FID, TTFB), profiling More ❯

developer who will work to develop new greenfield applications and also to support existing applications along with assisting Creditsafe in their transformation to a new cloud based web and API platform. The team uses Agile methodologies (Scrum and Kanban) to deliver products and services efficiently and to high standard. The successful candidate will be a skilled and enthusiastic developer … building scalable solutions to help deliver productized solutions that surface this data. KEY RESPONSIBILITIES & DUTIES Play a hands-on role as part of a Scrum or Kanban team to design, develop, test and maintain high quality web applications and backend services that fulfil business needs. Working collaboratively to design, develop and test solutions. Help support the team in … and you may be requested to take on additional responsibilities deemed as reasonable by their direct line manager. SKILLS AND QUALIFICATIONS Knowledge of Node.JS or Python. Experience of RESTFul API design and development. Designing and building microservices. Experience in the Public Cloud Platforms, AWS. Cloud Based Database Systems. DynamoDb, Aurora, MySQL. Knowledge and experience of Agile development methodologies. More ❯

SDLC. What We’re Looking For A strong communicator and a true team player, you'll bring experience in most of the following: Tech Stack C# .NET Core Web API Docker/Kubernetes AWS or Azure Git SQL/NoSQL Ways of Working Agile/Scrum TDD, CI/CD, DevOps SOLID principles RESTful API design What More ❯

Principal Web Engineer at MHR, you're not just writing code you're architecting the future of software solutions. You'll drive excellence in every aspect, from user interface design to maintaining a high-quality code base, collaborating with like-minded Web Developers, shaping innovative solutions, and coaching the team to tackle complex business challenges head-on. Working hybrid … proof of concepts to de-risk delivery and elucidate intricate concepts. Elevate coding standards by automating processes, ensuring extensive test coverage for sustainable delivery. Provide essential guidance during planning, design reviews, and incident management to empower web engineers. Cultivate consensus among peers on cutting-edge technologies and best practices. Play a vital role in recruitment campaigns, hiring highly skilled … working on and building modern enterprise Angular applications. Solid understanding of HTML/HTML5, JavaScript/Typescript, CSS/SASS Good understanding of the following: Accessibility, Responsive and Adaptive design, working with UX/UI design documents Knowledge of the following: Web security, RESTful Web Services Experience with modern unit testing frameworks and methodologies. Strong understanding of RESTful More ❯

re seeking talented engineers who will help us build and mature our in-house software-engineering capability as we continue this journey together. JOB PURPOSE Lead the in-house design, hands-on development, and technical delivery of high-quality, scalable and secure software solutions by writing and reviewing code, setting engineering standards and guiding architecture in order to enable … engineering excellence this role helps easyJet build the technical capabilities needed to deliver critical operational solutions faster, more securely and at lower cost JOB ACCOUNTABILITIES Lead and drive the design, architecture, and development of high-quality software systems f or airline-operations products. Collaborate with relevant product managers, QE leads and to understand technical direction, project scope, and roadmaps … for relevant mission. Design, develop, and maintain automated test frameworks and tools to ensure high-quality software releases and streamline the development process. Mentor and provide guidance to junior and mid-level engineers, fostering a culture of continuous learning and improvement. Own the technical delivery of key product features, ensuring they meet performance, security, and scalability requirements. Champion modern More ❯

re seeking talented engineers who will help us build and mature our in-house software-engineering capability as we continue this journey together. JOB PURPOSE Lead the in-house design, hands-on development, and technical delivery of high-quality, scalable and secure software solutions by writing and reviewing code, setting engineering standards and guiding architecture in order to enable … engineering excellence this role helps easyJet build the technical capabilities needed to deliver critical operational solutions faster, more securely and at lower cost JOB ACCOUNTABILITIES Lead and drive the design, architecture, and development of high-quality software systems f or airline-operations products. Collaborate with relevant product managers, QE leads and to understand technical direction, project scope, and roadmaps … for relevant mission. Design, develop, and maintain automated test frameworks and tools to ensure high-quality software releases and streamline the development process. Mentor and provide guidance to junior and mid-level engineers, fostering a culture of continuous learning and improvement. Own the technical delivery of key product features, ensuring they meet performance, security, and scalability requirements. Champion modern More ❯

re seeking talented engineers who will help us build and mature our in-house software-engineering capability as we continue this journey together. JOB PURPOSE Lead the in-house design, hands-on development, and technical delivery of high-quality, scalable and secure software solutions by writing and reviewing code, setting engineering standards and guiding architecture in order to enable … engineering excellence this role helps easyJet build the technical capabilities needed to deliver critical operational solutions faster, more securely and at lower cost JOB ACCOUNTABILITIES Lead and drive the design, architecture, and development of high-quality software systems f or airline-operations products. Collaborate with relevant product managers, QE leads and to understand technical direction, project scope, and roadmaps … for relevant mission. Design, develop, and maintain automated test frameworks and tools to ensure high-quality software releases and streamline the development process. Mentor and provide guidance to junior and mid-level engineers, fostering a culture of continuous learning and improvement. Own the technical delivery of key product features, ensuring they meet performance, security, and scalability requirements. Champion modern More ❯

re seeking talented engineers who will help us build and mature our in-house software-engineering capability as we continue this journey together. JOB PURPOSE Lead the in-house design, hands-on development, and technical delivery of high-quality, scalable and secure software solutions by writing and reviewing code, setting engineering standards and guiding architecture in order to enable … engineering excellence this role helps easyJet build the technical capabilities needed to deliver critical operational solutions faster, more securely and at lower cost JOB ACCOUNTABILITIES Lead and drive the design, architecture, and development of high-quality software systems f or airline-operations products. Collaborate with relevant product managers, QE leads and to understand technical direction, project scope, and roadmaps … for relevant mission. Design, develop, and maintain automated test frameworks and tools to ensure high-quality software releases and streamline the development process. Mentor and provide guidance to junior and mid-level engineers, fostering a culture of continuous learning and improvement. Own the technical delivery of key product features, ensuring they meet performance, security, and scalability requirements. Champion modern More ❯

and stakeholders to deliver clean, efficient, and maintainable code that supports business goals and enhances user experience. Key Responsibilities Build and maintain .NET Core/ASP.NET applications and APIs Design and optimize database structures (SQL Server or equivalent) Implement best practices for coding, testing, and deployment Participate in code reviews, sprints, and agile ceremonies Collaborate with a distributed team … solutions on time and to spec What Youll Need 3+ years of professional experience in .NET development Strong proficiency in C#, ASP.NET Core, Entity Framework Solid understanding of RESTful API design and software architecture principles Experience with Azure or other cloud environments preferred Good communication skills and ability to work independently in a remote setup Nice to Have More ❯

the go-to technical voice for engineering and delivery, shaping how apps, services, and systems come together. It’s a varied role that mixes hands-on coding with architectural design and technical leadership. You’ll design and build modern environments, integrate multiple SaaS platforms, and help set the standards for how things are done across the organisation. You … cloud architecture • Infrastructure as code using Terraform and CloudFormation • Docker and Kubernetes • Automation and CI/CD pipelines • GitHub and GitHub Actions Software and Frameworks • React, Node, Next.js, Python • API design and integration • RESTful services and automation Data and Platforms • Salesforce • Google Workspace • Atlassian tools such as Jira and Confluence • Databases including DynamoDB, MongoDB, and RDS Security and … best practice You’ll bring a broad technical background, strong problem-solving ability, and the confidence to define the right approach. If you enjoy combining coding, cloud engineering, and design thinking, and want a role with purpose, autonomy, and impact, then this is for you. More ❯

the go-to technical voice for engineering and delivery, shaping how apps, services, and systems come together. It’s a varied role that mixes hands-on coding with architectural design and technical leadership. You’ll design and build modern environments, integrate multiple SaaS platforms, and help set the standards for how things are done across the organisation. You … cloud architecture • Infrastructure as code using Terraform and CloudFormation • Docker and Kubernetes • Automation and CI/CD pipelines • GitHub and GitHub Actions Software and Frameworks • React, Node, Next.js, Python • API design and integration • RESTful services and automation Data and Platforms • Salesforce • Google Workspace • Atlassian tools such as Jira and Confluence • Databases including DynamoDB, MongoDB, and RDS Security and … best practice You’ll bring a broad technical background, strong problem-solving ability, and the confidence to define the right approach. If you enjoy combining coding, cloud engineering, and design thinking, and want a role with purpose, autonomy, and impact, then this is for you. More ❯

the go-to technical voice for engineering and delivery, shaping how apps, services, and systems come together. It’s a varied role that mixes hands-on coding with architectural design and technical leadership. You’ll design and build modern environments, integrate multiple SaaS platforms, and help set the standards for how things are done across the organisation. You … cloud architecture • Infrastructure as code using Terraform and CloudFormation • Docker and Kubernetes • Automation and CI/CD pipelines • GitHub and GitHub Actions Software and Frameworks • React, Node, Next.js, Python • API design and integration • RESTful services and automation Data and Platforms • Salesforce • Google Workspace • Atlassian tools such as Jira and Confluence • Databases including DynamoDB, MongoDB, and RDS Security and … best practice You’ll bring a broad technical background, strong problem-solving ability, and the confidence to define the right approach. If you enjoy combining coding, cloud engineering, and design thinking, and want a role with purpose, autonomy, and impact, then this is for you. More ❯

with data scientists, product managers, and other engineers to build systems that enable insight, automation, and intelligent data-driven decision-making at scale. Your main responsibilities will be to: •Design, develop, and maintain full-stack web applications with a focus on data pipelines, analytics dashboards, and reporting tools. •Build scalable RESTful APIs and backend services using modern frameworks and … end technologies (HTML/CSS, JavaScript, React or similar). •Experience working with containerised applications (e.g. Docker, Swarm or Kubernetes) in a Linux-based environment. •Solid understanding of RESTful API design, microservices architectures, and asynchronous workflows. •Familiarity with ETL processes, data warehousing and distributed systems. Not necessary for you apply, but would be great if you also have More ❯

with data scientists, product managers, and other engineers to build systems that enable insight, automation, and intelligent data-driven decision-making at scale. Your main responsibilities will be to: •Design, develop, and maintain full-stack web applications with a focus on data pipelines, analytics dashboards, and reporting tools. •Build scalable RESTful APIs and backend services using modern frameworks and … end technologies (HTML/CSS, JavaScript, React or similar). •Experience working with containerised applications (e.g. Docker, Swarm or Kubernetes) in a Linux-based environment. •Solid understanding of RESTful API design, microservices architectures, and asynchronous workflows. •Familiarity with ETL processes, data warehousing and distributed systems. Not necessary for you apply, but would be great if you also have More ❯

with data scientists, product managers, and other engineers to build systems that enable insight, automation, and intelligent data-driven decision-making at scale. Your main responsibilities will be to: •Design, develop, and maintain full-stack web applications with a focus on data pipelines, analytics dashboards, and reporting tools. •Build scalable RESTful APIs and backend services using modern frameworks and … end technologies (HTML/CSS, JavaScript, React or similar). •Experience working with containerised applications (e.g. Docker, Swarm or Kubernetes) in a Linux-based environment. •Solid understanding of RESTful API design, microservices architectures, and asynchronous workflows. •Familiarity with ETL processes, data warehousing and distributed systems. Not necessary for you apply, but would be great if you also have More ❯

with data scientists, product managers, and other engineers to build systems that enable insight, automation, and intelligent data-driven decision-making at scale. Your main responsibilities will be to: •Design, develop, and maintain full-stack web applications with a focus on data pipelines, analytics dashboards, and reporting tools. •Build scalable RESTful APIs and backend services using modern frameworks and … end technologies (HTML/CSS, JavaScript, React or similar). •Experience working with containerised applications (e.g. Docker, Swarm or Kubernetes) in a Linux-based environment. •Solid understanding of RESTful API design, microservices architectures, and asynchronous workflows. •Familiarity with ETL processes, data warehousing and distributed systems. Not necessary for you apply, but would be great if you also have More ❯

decision-making bringing clarity and cohesion to a complex technology landscape. What you ll be doing Designing and delivering enterprise-grade SaaS architectures for performance, scalability, and security. Leading design discussions, setting standards, and ensuring alignment across multiple product teams. Driving the modernisation of legacy systems and enabling reusable, API-first architectures. Partnering with engineering, product, and security … Architect or Principal Engineer within a complex, large-scale software environment. Strong background in .NET, cloud-native development (AWS or Azure) , and event-driven microservices . Deep understanding of API design, containerisation (Docker/Kubernetes) , and SQL/NoSQL database technologies. A passion for simplification, scalability, and pragmatic delivery. Strong stakeholder management and communication skills across technical and … business audiences. Hands-on, delivery-focused approach you take ownership from design through to production. Why join? This is an opportunity to make a tangible impact within an established, well-funded organisation undergoing a significant technical transformation. Our client offers a collaborative, engineering-led culture where architecture has influence, innovation is encouraged, and delivery excellence is expected. If you More ❯

We are seeking a highly skilled and experienced Lead Mulesoft Developer to architect, design, and implement integration solutions using MuleSoft Anypoint Platform. The ideal candidate will have strong experience in Salesforce integration, SaaS platforms, and leading development teams in enterprise environments. Project Start Date : Dec'25/Jan'26 Key Responsibilities: Lead the design and development of integration … solutions using MuleSoft. Collaborate with cross-functional teams including Salesforce developers, architects, and business stakeholders. Develop APIs, orchestrations, and data transformations using MuleSoft Anypoint Studio. Ensure best practices in API design, security, and performance. Manage and mentor junior developers and provide technical guidance. Integrate various SaaS platforms and on-premise systems. Conduct code reviews, unit testing, and performance … documentation and support deployment processes. Required Skills: 8+ years of experience in integration development, with at least 5 years in MuleSoft. Strong hands-on experience with MuleSoft Anypoint Platform , API Manager , and Runtime Manager . Proven experience integrating Salesforce with other systems using MuleSoft. Deep understanding of RESTful APIs , SOAP , RAML , and JSON/XML . Experience with CI More ❯

We are seeking a highly skilled and experienced Lead Mulesoft Developer to architect, design, and implement integration solutions using MuleSoft Anypoint Platform. The ideal candidate will have strong experience in Salesforce integration, SaaS platforms, and leading development teams in enterprise environments. Project Start Date : Dec'25/Jan'26 Key Responsibilities: Lead the design and development of integration … solutions using MuleSoft. Collaborate with cross-functional teams including Salesforce developers, architects, and business stakeholders. Develop APIs, orchestrations, and data transformations using MuleSoft Anypoint Studio. Ensure best practices in API design, security, and performance. Manage and mentor junior developers and provide technical guidance. Integrate various SaaS platforms and on-premise systems. Conduct code reviews, unit testing, and performance … documentation and support deployment processes. Required Skills: 8+ years of experience in integration development, with at least 5 years in MuleSoft. Strong hands-on experience with MuleSoft Anypoint Platform , API Manager , and Runtime Manager . Proven experience integrating Salesforce with other systems using MuleSoft. Deep understanding of RESTful APIs , SOAP , RAML , and JSON/XML . Experience with CI More ❯

Solutions Architect (Integration | API Design)St Albans (Hybrid) Compensation: £95,000 +Bonus +Equity Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They're seeking a Solutions Architect to lead the end-to-end technical design of mission-critical platforms and services. The Role … We're seeking an experienced Solution Architect to design scalable, secure, and efficient technology solutions that support a major systems consolidation and migration programme. You will be responsible for planning and documenting the decommissioning of up to 30 disparate systems, and overseeing their seamless migration to a new, unified platform - ensuring zero downtime throughout. In addition, you'll lead … Review implementations to ensure compliance with technical standards Drive innovation through prototyping and evaluation of emerging technologies What We're Looking For: Proven experience in Solution Architecture or Solution Design, ideally in environments involving systems consolidation or major technology transformations Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP More ❯

Solutions Architect (Integration | API Design) St Albans (Hybrid) Compensation: £95,000 +Bonus +Equity Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They're seeking a Solutions Architect to lead the end-to-end technical design of mission-critical platforms and services. The Role … We're seeking an experienced Solution Architect to design scalable, secure, and efficient technology solutions that support a major systems consolidation and migration programme. You will be responsible for planning and documenting the decommissioning of up to 30 disparate systems, and overseeing their seamless migration to a new, unified platform - ensuring zero downtime throughout. In addition, you'll lead … Review implementations to ensure compliance with technical standards Drive innovation through prototyping and evaluation of emerging technologies What We're Looking For: Proven experience in Solution Architecture or Solution Design, ideally in environments involving systems consolidation or major technology transformations Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP More ❯

Solutions Architect (Integration | API Design) St Albans (Hybrid) £90,000 + Bonus + Lucrative Shares Scheme Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They’re seeking a Solutions Architect to lead the end-to-end technical design of mission-critical platforms and … services. The Role: We’re seeking an experienced Solution Architect to design scalable, secure, and efficient technology solutions that support a major systems consolidation and migration programme. You will be responsible for planning and documenting the decommissioning of up to 30 disparate systems, and overseeing their seamless migration to a new, unified platform — ensuring zero downtime throughout. In addition … Review implementations to ensure compliance with technical standards Drive innovation through prototyping and evaluation of emerging technologies What We’re Looking For: Proven experience in Solution Architecture or Solution Design, ideally in environments involving systems consolidation or major technology transformations Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP More ❯