API Design Jobs in the UK

851 to 875 of 1,109 API Design Jobs in the UK

Senior Application Security Consultant

London, England, United Kingdom
JR United Kingdom
remediation, and integrate Application Security controls within the DevOps pipeline. The focus is on cloud-native development in AWS environments. Key responsibilities include: Embedding secure coding practices and supporting design/code reviews Implementing SAST, DAST, SCA, and other security checks into DevOps workflows Supporting secure API design and cloud-native architecture Serving as a key escalation … Providing developer enablement through workshops and threat modelling What you’ll bring: At least 3 years in application or product security roles Strong understanding of application-level threats, secure design, and remediation strategies Experience with Infrastructure as Code security (Terraform, CloudFormation), container security, and AWS Excellent communication skills and a collaborative approach #J-18808-Ljbffr More ❯
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Integration Developer

Poole, Dorset, South West, United Kingdom
Sanderson Recruitment
programme is driving exciting changes across the business, so they are looking to hire an Integration Developer to support their transition to be more scalable and data-driven. Responsibilities: Design and develop robust APIs to enable seamless data exchange and integration between systems. Create clear documentation and guidelines to support consistent and effective API usage. Collaborate with stakeholders … Support continuous improvement by resolving issues promptly, sharing best practices, and contributing to team learning and ad hoc tasks. Skills & Experience: Previous experience in integration development Strong skills in API design and development Hands-on experience with Microsoft Azure Ability to work independently and manage tasks proactively Excellent communication skills, both written and verbal Strong documentation abilities with More ❯
Employment Type: Permanent
Salary: £45,000
Posted:

Senior Application Security Consultant

London, England, United Kingdom
Senitor Associates
and integrate AppSec controls across the DevOps pipeline. This role is especially focused on cloud-native development in AWS environments. Key responsibilities include: Embedding secure coding practices and supporting design/code reviews Implementing SAST, DAST, SCA, and other security checks into DevOps workflows Supporting secure API design and cloud-native architecture Acting as a key escalation … Delivering developer enablement through workshops and hands-on threat modelling What you’ll bring: 3+ years in application or product security roles Strong grasp of application-level threats, secure design, and remediation strategies Experience with IaC security (Terraform, CloudFormation), container security, and AWS Clear communication skills and a collaborative approach Seniority level Seniority level Mid-Senior level Employment type More ❯
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Technical Lead

London Area, United Kingdom
Hybrid / WFH Options
Talent Connect Group (TCG)
and cloud architecture, combined with the vision to build scalable, secure, and performant systems. Key Responsibilities Architect and lead the development of modern web applications using React and TypeScript Design scalable, secure, and resilient systems on AWS Collaborate closely with product, design, and data teams to deliver high-quality user experiences Mentor and guide a small team of … scale-up or tech-forward company Deep expertise in React , TypeScript , and modern JavaScript frameworks Strong experience designing and deploying web applications on AWS Excellent understanding of application architecture, API design, and cloud-native best practices Comfortable working autonomously and making strategic technical decisions Based in the UK and eligible to work without sponsorship Bonus Skills Experience building More ❯
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Technical Lead

City of London, London, United Kingdom
Hybrid / WFH Options
Talent Connect Group (TCG)
and cloud architecture, combined with the vision to build scalable, secure, and performant systems. Key Responsibilities Architect and lead the development of modern web applications using React and TypeScript Design scalable, secure, and resilient systems on AWS Collaborate closely with product, design, and data teams to deliver high-quality user experiences Mentor and guide a small team of … scale-up or tech-forward company Deep expertise in React , TypeScript , and modern JavaScript frameworks Strong experience designing and deploying web applications on AWS Excellent understanding of application architecture, API design, and cloud-native best practices Comfortable working autonomously and making strategic technical decisions Based in the UK and eligible to work without sponsorship Bonus Skills Experience building More ❯
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Product Manager II (Margin)

Belfast, United Kingdom
Hybrid / WFH Options
Peak6 Investments LLC
of prestigious industry awards, including: 2021, 2020, 2019, and 2018 Best Wealth Management Company - presented by Fintech Breakthrough Awards 2021 Most Innovative Companies - presented by Fast Company 2021 Best API & Best Trading Technology - presented by Global Fintech Awards ABOUT THIS ROLE Apex Fintech Solutions is recognized for disrupting the financial services industry, enabling Fintech standouts like Stash, Robinhood and … should thrive on creating innovative, high-performance, and high-volume solutions that support mission-critical operations across a diverse client base. This role offers the opportunity to spearhead the design and delivery of efficient, scalable, and cost-effective margin-focused products, empowering clients with specialized tools to maintain or gain a competitive advantage. We are seeking a candidate who … Develop and manage the feature team backlog while ensuring alignment with strategic objectives, navigating ambiguities and resolving internal and external team dependencies. Maintain a strong understanding of technical services, API design, database technologies, and operating concepts in fintech industry to ensure robust and scalable product solutions. Education and/or Experience Bachelor's degree in Computer Science, Engineering More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Payments Architect (with Business Analysis Expertise)

Bromley, England, United Kingdom
Ascendion
focusing on SEPA , ISO 20022 , and UK/EU payment systems. As a key player in the architecture and transformation space, you will collaborate with cross-functional teams to design modern, scalable, and compliant payment solutions across the European landscape. Key Responsibilities Lead the solution design and architecture for payment systems across SEPA and UK schemes. Engage in … end-to-end business analysis – from requirement gathering to stakeholder management. Develop high-level and low-level design documents , functional specs, and architecture blueprints. Drive and support SEPA SCT and SEPA Instant Payment implementations . Ensure alignment with ISO 20022 standards and manage migration or enhancement initiatives. Work closely with internal teams, product owners, compliance, and third-party vendors. … Collaborate with technology teams on API designs, message schemas, and payment flows . Contribute to strategy discussions, payment innovation, and future-proofing initiatives. Key Requirements Proven experience as a Payment Solution Architect or Solutions Architect (with Business Analysis Expertise) in banking or financial institutions. Deep understanding of SEPA (Credit Transfer & Instant) – functional and technical. Strong knowledge of ISO More ❯
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C/C++ Senior Software Engineer, Camera & Sensor Software

London, England, United Kingdom
Amazon
deliver the next high-profile Amazon camera & sensor product. Our cross-functional team brings together engineers and scientists with deep expertise in the different worlds of image quality, algorithm design, embedded software, robotics and depth sensing, optics/photogrammetry, graphics and simulation, and machine learning. Together we have built a vast range of different ground-breaking products - from the … Echo Look, Echo Show, Ring security cameras and the Astro home robot. Key job responsibilities As a Senior Software Development Engineer you will: - Design algorithms and write software for our consumer products. - Work closely with camera & sensor experts, product management, computer vision and machine learning experts. - Guide the team to solve complex technical challenges and invent new ways to … more junior engineers as well as managing your own deliverables. BASIC QUALIFICATIONS - Experience programming with at least one modern language such as Java, C++, or C# including object-oriented design - Experience leading the architecture and design (architecture, design patterns, reliability and scaling) of new and current systems - Experience in professional, non-internship software development - Experience as a More ❯
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Payments Architect (with Business Analysis Expertise)

Cray Valley East, England, United Kingdom
Ascendion
focusing on SEPA , ISO 20022 , and UK/EU payment systems. As a key player in the architecture and transformation space, you will collaborate with cross-functional teams to design modern, scalable, and compliant payment solutions across the European landscape. Key Responsibilities Lead the solution design and architecture for payment systems across SEPA and UK schemes. Engage in … end-to-end business analysis – from requirement gathering to stakeholder management. Develop high-level and low-level design documents , functional specs, and architecture blueprints. Drive and support SEPA SCT and SEPA Instant Payment implementations . Ensure alignment with ISO 20022 standards and manage migration or enhancement initiatives. Work closely with internal teams, product owners, compliance, and third-party vendors. … Collaborate with technology teams on API designs, message schemas, and payment flows . Contribute to strategy discussions, payment innovation, and future-proofing initiatives. Key Requirements Proven experience as a Payment Solution Architect or Solutions Architect (with Business Analysis Expertise) in banking or financial institutions. Deep understanding of SEPA (Credit Transfer & Instant) – functional and technical. Strong knowledge of ISO More ❯
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C/C++ Senior Software Engineer, Camera Software

Cambridge, England, United Kingdom
Amazon
and deliver the next high-profile Amazon camera product. Our cross-functional team brings together engineers and scientists with deep expertise in the different worlds of image quality, algorithm design, embedded software, robotics, depth sensing, optics/photogrammetry, graphics and simulation, and machine learning. Together we have built a vast range of different ground-breaking products - from the Echo … Look, Echo Show, Ring security cameras, and the Astro home robot. What will you help us build? Key Job Responsibilities As a Senior Software Development Engineer you will: Design algorithms and write software for our consumer products. Work closely with camera experts, product management, computer vision, and machine learning experts. Guide the team to solve complex technical challenges and … programming with at least one modern language such as Java, C++, or C# including object-oriented design. Experience in professional, non-internship software development. Experience leading the architecture and design (architecture, design patterns, reliability, and scaling) of new and current systems. Experience in hands-on development in the last 3 years. Understanding of building systems and toolchains. Identifying More ❯
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Head of Software Engineering and Operations, Constellation Operations

Glasgow, Scotland, United Kingdom
Hybrid / WFH Options
Spire Global, Inc
Head of Software Engineering and Operations, Constellation Operations Spire’s Constellation Operations group develops the interfaces used by our customers to design, test, deploy and operate space-based software applications. In some cases these applications run on standard Spire hardware, and in some cases on hosted payloads custom-designed by us or our customers. This role reports directly to … exec both internally and externally. Experience developing software for resource constrained environments like embedded ARM devices Experience writing Python Experience writing Rust Previous experience running a team delivering an API-based product or product family Experience with Kubernetes, CI/CD pipelines, and debugging operational application issues. In-depth knowledge of API design principles and best practices More ❯
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Senior UI Architect – Product Experience - AI SaaS Scale-up - UK (Remote)

London, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
a mission to transform the way organisations harness AI for customer support and product operations. They’re looking for a Senior UI Architect who sits at the intersection of design excellence and engineering. This is a hands-on, systems-level leadership role for someone who doesn’t just ship components—they craft cohesive, elegant, ultra-performant experiences. You’ll … are not only beautiful and intuitive, but also scalable and lightning-fast. What You’ll Do Architect performant, low-latency UI systems that feel instantaneous and intuitive Elevate the design system with best-in-class standards for simplicity, extensibility, and polish Drive tight collaboration with product designers—translating vision into crisp, low-friction user flows Mentor and uplift engineers … bundle sizes, animation fluidity) Lead innovation across complex surfaces like search, timelines, real-time dashboards, and data-dense interfaces Define and enforce front-end best practices, including accessibility, interaction design, and motion principles Partner closely with backend and platform teams to influence API design for optimal UX You Might Be a Fit If You Have 10–15+ More ❯
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Senior UI Architect – Product Experience - AI SaaS Scale-up - UK (Remote)

Slough, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
a mission to transform the way organisations harness AI for customer support and product operations. They’re looking for a Senior UI Architect who sits at the intersection of design excellence and engineering. This is a hands-on, systems-level leadership role for someone who doesn’t just ship components—they craft cohesive, elegant, ultra-performant experiences. You’ll … are not only beautiful and intuitive, but also scalable and lightning-fast. What You’ll Do Architect performant, low-latency UI systems that feel instantaneous and intuitive Elevate the design system with best-in-class standards for simplicity, extensibility, and polish Drive tight collaboration with product designers—translating vision into crisp, low-friction user flows Mentor and uplift engineers … bundle sizes, animation fluidity) Lead innovation across complex surfaces like search, timelines, real-time dashboards, and data-dense interfaces Define and enforce front-end best practices, including accessibility, interaction design, and motion principles Partner closely with backend and platform teams to influence API design for optimal UX You Might Be a Fit If You Have 10–15+ More ❯
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Mobile Engineer

Edinburgh, Scotland, United Kingdom
Rockstar
iOS and Android. Develop shared UI for both platforms with Flutter. Work closely with our QA department and the developer teams working on the individual games. Contribute to the design and architecture of new features and improvements for the mobile platform. Troubleshoot and debug complex issues, optimize code, and improve overall stability. Collaborate with other Rockstar technology teams across … Kotlin and the Android development workflow. Strong experience with Flutter for UI/UX. Strong experience with Ruby for build automation. Strong CS fundamentals, including excellent understanding of OO design patterns and concepts. Experience with API design and development. Experience with source control, preferably Git. PLUSES Please note that these are desirable skills and are not required More ❯
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Snr. Frontend Engineer

London, England, United Kingdom
Hybrid / WFH Options
Gendo
seed-stage and seed-stage funding from renowned investors within the space, enabling us to expand our team and deliver on our ambitious vision. What we value At Gendo, design is at the core of our mission- both in the design of our products and also through its power to elevate creative expression, pushing the boundaries of architectural … KPF, and David Chipperfield Architects, and of course within the Gendo team itself. We take an exploratory approach to work, continuously innovating and seeking new ways to enhance the design process for our users. Our ambition is big, we're building a passionate, dedicated, world class team to transform the future of architecture and design, making cutting-edge … with a rich canvas-based UI powered by WebGL and real-time collaboration supported through WebSockets. Given our small team, we value frontend developers with a strong eye for design and a knack for product thinking. The ideal candidate can comfortably fill in gaps when wireframes or detailed designs aren't available, using our design system to maintain More ❯
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Director, Global Connect – Account Linking Product-R-248347

London, England, United Kingdom
Mastercard
provide customization to enhance the user experience. For consumers, Connect enables secure access and management of connected accounts. This role will partner closely with Engineering, Regional Product Leads and Design teams to advance the roadmap for the Global Connect product. The role will oversee the product lifecycle from concept to enhancements with a focus on continuous improvement. This global … Move fast, test, learn, iterate, and scale globally Qualifications & Skills To succeed in this role, you will have: Product Manager experience, with demonstrated ability to launch and scale complex, API-driven solutions; global experience a strong plus. Technical proficiency with a deep understanding of system dynamics, platforms, and API designs to optimize solutions for clients and users. Understanding … organizational, verbal, and written communication skills. A bachelor's degree in business, technology, or a related field. If you thrive in fast-paced environments, enjoy solving complex user experience & design challenges, and want to help shape the future of Open Finance, we want to hear from you! Corporate Security Responsibility All activities involving access to Mastercard assets, information, and More ❯
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Salesforce Developer

London, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
code Required Skills: Strong experience as a Salesforce Developer (Apex, LWC, Flow, configuration) Proven background in Banking, Financial Services, or Insurance Hands-on experience with system integrations and secure API design Able to work in agile teams and regulated environments Salesforce Platform Developer I or II Experience with middleware tools (e.g. MuleSoft, Jitterbit, Boomi) Familiarity with Financial Services More ❯
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Principal Web Engineer (Angular)

Ruddington, England, United Kingdom
Hybrid / WFH Options
MHR
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 … development plans. What you’ll bring to the role and MHR Experience working on and building modern enterprise Angular applications. 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 ❯
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Consulting IAM Architect Professional Multiple Cities

Leicester, Leicestershire, United Kingdom
Avature
Required technical and professional expertise Deep Expertise: Specialist/Engineer in Identity and Access Management (IAM), serving as a Subject Matter Expert (SME) in IBM Security Verify Access. Solution Design and Implementation: Skilled in high-level and low-level design and implementation of complex consumer access management solutions. Technical Proficiency: Expertise in API Design, OAuth/ More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

AI & Data Science Lead

Reading, Berkshire, United Kingdom
Keyloop
and Data Science. Lead the AI Centre of Excellence, managing a growing team of AI engineers. Represent AI in senior product, engineering, and vendor forums. Generative AI Delivery Lead design, prototyping, and deployment of GenAI use cases (e.g. co-pilots, AI agents, RAG systems). Establish scalable LLMOps practices including model evaluation, governance, and lifecycle automation. Maintain awareness of … emerging models and integration strategies. Machine Learning Engineering: Support the ML Engineer in model development, deployment, and monitoring. Contribute to pipelines, experimentation design, and MLOps enablement. Provide code and architectural reviews, as well as technical mentoring. Data Science Enablement Act as Data Scientist to support analytics and decision-making needs. Develop experimentation frameworks, metric definitions, and statistical models. Help … stakeholder management and communication skills. Preferred Qualifications: Familiarity with AWS AI services (e.g. Bedrock, SageMaker, Lambda, Step Functions). Experience with low/no-code GenAI tools. Background in API design, platform development, or DevOps for AI systems. Exposure to ethical AI and data governance frameworks. This is a greenfield opportunity to build a technically excellent AI capability More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer, Backend

London, England, United Kingdom
Duffel
tools to simplify travel distribution, search and booking. What does this actually mean? It's one common and seamless API. This brings huge technical challenges as we need to design and build a beautiful API before integrating to hundreds of airlines. Along with that we need to navigate through the differing needs and systems of each airline whilst … is absolutely fine. What's more important is your general engineering ability rather than your knowledge of a particular language or framework. - A high bar in code quality and API design. - Opinions on what good engineering standards and processes look like as we define ours at Duffel. - Big picture thinking - you can make trade offs on technical work streams More ❯
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Software Engineer (GO), FiveM (Mid/Senior)

London, England, United Kingdom
Rockstar Games
platforms, including server discovery, player authentication, server management, content management and more. RESPONSIBILITIES Develop high volume, highly scalable server-side features utilizing various popular technology stacks. Contribute to the design and architecture of new features and improvements for the modding platform. Troubleshoot and debug complex issues, optimize code, and improve overall system stability. Work closely with other engineers to … Science, relatedfield or equivalent work experience. 4+ years of experience working as a software engineer. SKILLS Strong proficiency in GO. Experience with relational databases and NoSQL datastores. Experience with API design and development. Knowledge of web service scalability, performance, and security practices. Knowledge of Agile software development processes. PLUSES Please note that these are desirable skills and are More ❯
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Member of Technical Staff, AI - Reinforcement Systems

London, United Kingdom
Microsoft
up, discover and diagnose causes of suboptimal performance, and contribute to solving scientific and research challenges. Specifically, they should: Excel in programming (especially parallel/concurrent), software engineering, and API design Have experience in large-scale systems, preferably having built some components from scratch. Thrive in a highly collaborative, fast-paced environment Have a high degree of craftsmanship More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Solutions Architect - Remote - Data, Integration, & Digital Architecture

United Kingdom
Hybrid / WFH Options
Areti Group | B Corp™
Architecture experience with information systems and order architecture. Data - Data Architecture, Data Warehousing & Lakes, ETL/ELT Pipelines, Customer Data Platforms (CDPs), Data Governance & Compliance, or, Analytics & BI. Integration - API Design & Management, Middleware & ESB, Event-Driven Architecture, BSS/OSS Integration, Partner Ecosystem Integration, CI/CD & DevOps. Digital - Customer Portals & Self-Service, UX/UI Collaboration, Personalization More ❯
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Solutions Architect - Remote - Data, Integration, & Digital Architecture

How, Cumbria, UK
Hybrid / WFH Options
Areti Group | B CorpTM
Architecture experience with information systems and order architecture. Data - Data Architecture, Data Warehousing & Lakes, ETL/ELT Pipelines, Customer Data Platforms (CDPs), Data Governance & Compliance, or, Analytics & BI. Integration - API Design & Management, Middleware & ESB, Event-Driven Architecture, BSS/OSS Integration, Partner Ecosystem Integration, CI/CD & DevOps. Digital - Customer Portals & Self-Service, UX/UI Collaboration, Personalization More ❯
Employment Type: Full-time
Posted:
API Design
10th Percentile
£52,500
25th Percentile
£61,563
Median
£76,250
75th Percentile
£93,778
90th Percentile
£118,375