251 to 275 of 289 API Design Jobs in the UK

within the organisation. Contract details: 700 DR Inside IR35 12 month contract ASAP start date Hybrid - as and when required in London (infrequent travel) Skillset: Background in Software Architecture API design (REST is preferable). ++ Designing for use with User Interfaces would be a plus. Event-driven architecture patterns Familiarity with AWS and Kubernetes (Containers) would be More ❯

within the organisation. Contract details: 700 DR Inside IR35 12 month contract ASAP start date Hybrid - as and when required in London (infrequent travel) Skillset: Background in Software Architecture API design (REST is preferable). ++ Designing for use with User Interfaces would be a plus. Event-driven architecture patterns Familiarity with AWS and Kubernetes (Containers) would be More ❯

within the organisation. Contract details: 700 DR Inside IR35 12 month contract ASAP start date Hybrid - as and when required in London (infrequent travel) Skillset: Background in Software Architecture API design (REST is preferable). ++ Designing for use with User Interfaces would be a plus. Event-driven architecture patterns Familiarity with AWS and Kubernetes (Containers) would be More ❯

within the organisation. Contract details: 700 DR Inside IR35 12 month contract ASAP start date Hybrid - as and when required in London (infrequent travel) Skillset: Background in Software Architecture API design (REST is preferable). ++ Designing for use with User Interfaces would be a plus. Event-driven architecture patterns Familiarity with AWS and Kubernetes (Containers) would be More ❯

This independent tech company on a mission to build products that just work . Our flagship app has been featured in major tech keynotes, nominated for international design awards, and praised for solving a universal problem: helping people look and sound their best online. From individual creators to global tech giants and leading universities, millions rely on our software … You care about the craft of engineering and the details that make software feel effortless Bonus points for Experience with modern front-end frameworks and web technologies Knowledge of API design, CI/CD, or cloud platforms (GCP, Cloudflare, GitHub, Azure) Familiarity with design tools such as Figma Comfort working with leadership or mentoring small teams What More ❯

Technical Product Management Oversee integration and optimization of multiple DSPs, SSPs, and ad-serving technologies. Define technical requirements for real-time bidding systems handling billions of daily requests. Lead API product management across the AdTech/MarTech ecosystem. Design data pipelines and architecture for cross-platform campaign analytics. Ensure sub-100ms response times while maintaining 99.9% platform reliability. … least 3 years focused on programmatic advertising. Deep technical knowledge of: Programmatic ecosystem: DSPs, SSPs, DMPs, CDPs, and ad servers Real-time bidding protocols, header bidding, and auction dynamics API design, data pipelines, and system integrations Attribution methodologies and cross-device identity solutions Technical Platform Expertise Hands-on experience with major DSP platforms (e.g., DV360, The Trade Desk More ❯

days in-office per week, occasional on-site workshops Contract: Initial 6-month contract (potential for extension) Overview: We are seeking an experienced Solution Architect to lead the design and delivery of integration solutions within our Asset Management ecosystem. The successful candidate will play a key role in defining target architectures, delivering integration designs, and ensuring seamless interoperability between … technically adept, business-minded professional who can bridge operational and technology teams, deliver robust integration solutions, and communicate effectively with stakeholders across the organization. Key Responsibilities: Lead the Integration Design for a fault reporting solution, including ServiceNow and IBM Maximo integration. Define and document the Target Architecture for the wider Asset Management ecosystem. Collaborate with business, operational, and technical … years’ experience in Solution Architecture , ideally within large, complex corporate environments. Strong understanding of Asset Management Systems and associated data models. Proven experience with ServiceNow platform and integration design . Experience with IBM Maximo (or alternative EAM platforms such as IFS or Ultimo ). Proficiency in data integration , API design , and user interface considerations . Familiarity with More ❯

Event-Driven Architecture | Performance | Testing Why You’ll Love This Role Tackle large-scale data processing, bulk operations, big file handling, and stream processing Build a new public-facing API powering multiple platforms Collaborate with talented engineers on high-impact projects Work on data-heavy systems where performance really counts Ship solutions quickly in a fast-moving, agile environment … and TypeScript (NestJS or similar frameworks) A proven track record optimising performance for large files, bulk ops, and streaming data Solid understanding of event-driven systems , queues, and scalable API design (REST, OpenAPI/Swagger) Strong testing skills (unit & integration, ideally with Jest) Pragmatic, delivery-focused mindset with clean, maintainable code Bonus: experience working in Agile environments (Scrum More ❯

Event-Driven Architecture | Performance | Testing Why You’ll Love This Role Tackle large-scale data processing, bulk operations, big file handling, and stream processing Build a new public-facing API powering multiple platforms Collaborate with talented engineers on high-impact projects Work on data-heavy systems where performance really counts Ship solutions quickly in a fast-moving, agile environment … and TypeScript (NestJS or similar frameworks) A proven track record optimising performance for large files, bulk ops, and streaming data Solid understanding of event-driven systems , queues, and scalable API design (REST, OpenAPI/Swagger) Strong testing skills (unit & integration, ideally with Jest) Pragmatic, delivery-focused mindset with clean, maintainable code Bonus: experience working in Agile environments (Scrum More ❯

orchestration, APIs, SDKs, integration toolkits) and lead the technical strategy to embed AI-driven orchestration across their software portfolio. This is a hands-on senior leadership role: you will design the platform, own non-functional requirements (reliability, security, scalability, compliance), drive adoption internally and externally, and build a small, high-performing global team that moves fast with a start … up mentality. What you’ll do Define and deliver the Core AI Services platform (orchestration, APIs, SDKs, integration toolkits). Lead the design and delivery of AI-driven orchestration layers across the software portfolio. Own platform non-functional attributes: security, reliability, availability, compliance, and global scale. Lower barriers to integration - deliver an excellent developer experience (APIs, SDKs, documentation, sample … major cloud providers preferred). Solid background in AI/ML technologies, ideally with experience integrating LLMs or advanced AI models into production orchestration layers. Strong knowledge of public API design, service lifecycle management, and developer experience best practices. Familiarity with emerging AI standards and agent protocols. Practical understanding of AI governance and regulation, with demonstrable experience implementing More ❯

integrating systems from acquired entities, ensuring architectural consistency and operational excellence across the group. Key Responsibilities Define and maintain the enterprise architecture vision and roadmap aligned with business strategy. Design and guide the implementation of scalable, integrated technology solutions across ERP, CRM, and financial systems. Lead integration initiatives, ensuring coherence and data integrity across platforms. Evaluate emerging technologies and … stakeholder management and influencing skills across business and technical domains. Proven experience with ERP, CRM, and financial systems (e.g., NetSuite, SAP, Microsoft Dynamics). Solid understanding of systems architecture, API design, and modern integration patterns. Knowledge of data architecture principles, governance frameworks, and integration methodologies. Ability to assess and recommend emerging technologies that drive efficiency and scalability. Experience … equivalent). Experience leading technical teams, external consultants, or project delivery functions. Proven success delivering enterprise transformation or multi-system integration projects exceeding £500k . Hands-on experience with API development , data migration , and system integration projects. Background in legacy system modernisation , particularly ERP transitions. Exposure to M&A technology integration (due diligence and post-acquisition) highly advantageous. Experience More ❯

execution for a core pillar of this new platform. You will operate as the single-threaded owner for a critical domain, working across engineering, AI/ML, research, and design to deliver a seamless and scalable product experience. This role is a rare opportunity to define the strategy for a zero-to-one system—shaping how content is modeled … foundational capability within IDC’s next-gen discovery platform. Define the data models, technical architecture, and platform interfaces that power intelligent, context-aware product experiences. Partner with engineering to design and deliver scalable APIs, system components, and observability layers that enable extensibility and reuse. Collaborate with AI/ML teams to integrate capabilities such as semantic search, LLM-powered … or equivalent technical experience. Proven track record of shipping 0→2 products or scaling platform capabilities in ambiguous, high-accountability environments. Deep technical fluency—you can meaningfully shape architecture, API design, and system trade-offs with engineering teams. Exceptional written and verbal communication skills; able to influence VP- and SVP-level stakeholders. Demonstrated ability to lead cross-functional More ❯

execution for a core pillar of this new platform. You will operate as the single-threaded owner for a critical domain, working across engineering, AI/ML, research, and design to deliver a seamless and scalable product experience. This role is a rare opportunity to define the strategy for a zero-to-one system—shaping how content is modeled … foundational capability within IDC’s next-gen discovery platform. Define the data models, technical architecture, and platform interfaces that power intelligent, context-aware product experiences. Partner with engineering to design and deliver scalable APIs, system components, and observability layers that enable extensibility and reuse. Collaborate with AI/ML teams to integrate capabilities such as semantic search, LLM-powered … or equivalent technical experience. Proven track record of shipping 0→2 products or scaling platform capabilities in ambiguous, high-accountability environments. Deep technical fluency—you can meaningfully shape architecture, API design, and system trade-offs with engineering teams. Exceptional written and verbal communication skills; able to influence VP- and SVP-level stakeholders. Demonstrated ability to lead cross-functional More ❯

and verbal), anticipate potential objections and persuade others to adopt the most appropriate view. Banking (retail) experience is preferred Experience of working in a highly regulated environment. Exposure to API design strategies both for internal and external customer usage Exposure to Cloud technologies. AWS Solution Architect certification - foundation level or higher Experience of working with service management teams More ❯

and deliver the solutions needed to build innovative products Evaluate, appropriately test, and debug your work, striving for high qualityKnowledge, Skills & Abilities: Strong knowledge in C++ Strong understanding of API design Ability to independently execute on medium sized features, taking a few weeks and multiple PRs to complete Ability to understand, debug and improve existing code Strong communications More ❯

University of the Arts London (UAL) is a world-leading creative University for teaching and research in art, design, fashion, communication and performing arts. UAL is made up of six renowned colleges and hosts several centres and institutes that further the University’s mission and social purpose, through the students and ideas we send out into the world and … and Data team, which plays a critical leadership role in shaping and delivering University of the Arts London’s enterprise integration strategy. This role is responsible for driving an API-first approach to system integration, ensuring that UAL’s digital platforms are seamlessly connected, scalable, and aligned with strategic priorities. You will lead a team of integration architects and … developers, overseeing the design, development, and optimisation of APIs that support business outcomes and enhance user experience. This includes managing the full lifecycle of integration services from strategy and architecture to delivery and operational support. The role requires close collaboration with internal stakeholders across Digital & Technology, academic colleges, and external partners to ensure integration solutions are robust, secure, and More ❯

University of the Arts London (UAL) is a world-leading creative University for teaching and research in art, design, fashion, communication and performing arts. UAL is made up of six renowned colleges and hosts several centres and institutes that further the University's mission and social purpose, through the students and ideas we send out into the world and … and Data team, which plays a critical leadership role in shaping and delivering University of the Arts London's enterprise integration strategy. This role is responsible for driving an API-first approach to system integration, ensuring that UAL's digital platforms are seamlessly connected, scalable, and aligned with strategic priorities. You will lead a team of integration architects and … developers, overseeing the design, development, and optimisation of APIs that support business outcomes and enhance user experience. This includes managing the full life cycle of integration services from strategy and architecture to delivery and operational support. The role requires close collaboration with internal stakeholders across Digital & Technology, academic colleges, and external partners to ensure integration solutions are robust, secure More ❯

solving complex technical problems and bringing scalable back-end systems to life? We’re seeking a Mid-Level Full Stack Developer with strong Python/Django expertise to help design and deliver powerful workflow solutions used by customers worldwide. This role leans heavily towards back-end development , where you’ll build business logic, scheduled tasks, and integrations that keep … reliable, and maintainable Python code. You’ll work closely with scientists, product specialists, and fellow developers to ensure our software is robust, scalable, and impactful. What You’ll Do Design, build, and maintain scalable Python/Django back-end systems . Implement customer-specific workflows, automation, and scheduled tasks. Contribute to API design and data modelling to More ❯

solving complex technical problems and bringing scalable back-end systems to life? We’re seeking a Mid-Level Full Stack Developer with strong Python/Django expertise to help design and deliver powerful workflow solutions used by customers worldwide. This role leans heavily towards back-end development , where you’ll build business logic, scheduled tasks, and integrations that keep … reliable, and maintainable Python code. You’ll work closely with scientists, product specialists, and fellow developers to ensure our software is robust, scalable, and impactful. What You’ll Do Design, build, and maintain scalable Python/Django back-end systems . Implement customer-specific workflows, automation, and scheduled tasks. Contribute to API design and data modelling to More ❯

open data space, who are currently seeking an experienced Senior iOS Developer. You will be responsible for building and maintaining new and exciting features while also driving technical discussions, API designs and architecture. 3+ years of commercial experience with iOS development. Good experience with automated testing. If you're a Senior iOS Developer looking to work for a rapidly More ❯

open data space, who are currently seeking an experienced Senior iOS Developer. You will be responsible for building and maintaining new and exciting features while also driving technical discussions, API designs and architecture. You will get the opportunity to make a big impact in a rapidly growing business. Their culture is based on working together, collaboration and being supportive More ❯

open data space, who are currently seeking an experienced Senior iOS Developer. You will be responsible for building and maintaining new and exciting features while also driving technical discussions, API designs and architecture. You will get the opportunity to make a big impact in a rapidly growing business. Their culture is based on working together, collaboration and being supportive More ❯

designing APIs, building responsive front-ends, and will work in close coordination with in-house and client development teams to deliver required updates and improvements. What You'll Do: Design, build, and maintain efficient, reusable, and reliable code using C#, .NET Core/Framework. Develop front-end components using modern JavaScript frameworks (e.g., React, Angular, or Vue). Build … with .NET (Core or Framework), C#, and modern web development. Experience with a front-end framework like React, Angular, or Vue. Solid understanding of HTML, CSS, JavaScript, and RESTful API design. Experience working with SQL and/or NoSQL databases. Familiarity with Git, CI/CD pipelines, and cloud platforms (e.g., Azure ). Strong problem-solving skills and a More ❯

designing APIs, building responsive front-ends, and will work in close coordination with in-house and client development teams to deliver required updates and improvements. What You'll Do: Design, build, and maintain efficient, reusable, and reliable code using C#, .NET Core/Framework. Develop front-end components using modern JavaScript frameworks (e.g., React, Angular, or Vue). Build … with .NET (Core or Framework), C#, and modern web development. Experience with a front-end framework like React, Angular, or Vue. Solid understanding of HTML, CSS, JavaScript, and RESTful API design. Experience working with SQL and/or NoSQL databases. Familiarity with Git, CI/CD pipelines, and cloud platforms (e.g., Azure ). Strong problem-solving skills and a More ❯

and are looking for a skilled and experienced Lead MuleSoft Consultant to join our growing team. The successful candidate will be responsible for leading MuleSoft projects responsible for the design, development and integration solutions that connect Salesforce with enterprise systems, cloud applications and data services. Why Alscient We are experts in digital transformation and are proud to be a … to make an immediate impact by providing solution input when required and able to lead on a variety of customer engagements. Key Responsibilities Include: Lead the end-to-end design and delivery of MuleSoft APIs, integrations, event-driven flows, and orchestration layers, ensuring performance, scalability, error handling and monitoring. Architect robust integration solutions connecting Salesforce (Sales Cloud, Service Cloud … quality throughout. Drive proof of concepts, spike work, technology evaluations, and platform upgrades (MuleSoft versions, connectors). Translate business requirements into integration solutions, ensuring scalability, security and maintainability. Implement API-led connectivity following MuleSoft best practices. Create technical documentation, API specifications (RAML/OAS), and deployment guides. Conduct unit testing, debugging and performance optimisation. Collaborate with Salesforce teams More ❯