API Design Jobs in the UK

126 to 150 of 184 API Design Jobs in the UK

Lead Software Developer - OutsideIR35 - Wealth Manager - London

London, South East, England, United Kingdom
Oliver James
Key Responsibilities: Manage, mentor, and motivate a skilled development team across a broad tech stack. Design and develop scalable, secure, and high-quality software in line with architectural standards. Uphold and enhance coding and testing standards through peer reviews and automated/manual testing. Lead initiatives to improve efficiency, reduce technical debt, and modernise systems. Collaborate with Delivery/… improvement. Skills: Relevant degree or equivalent experience. Expert-level proficiency in: .NET Core , C# , Angular , Azure Cloud Terraform , Azure Container Apps , Azure Data Factory , DataVerse SQL Server (T-SQL) , API Design & Development Strong analytical skills with the ability to solve complex technical issues. Proven leadership with excellent stakeholder engagement at all levels. Experience in Agile methodologies. Adaptable and More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

Principal Data Scientist (London)

London, UK
ZipRecruiter
around 20% team leadership. What Youll Do Oversee data science projects, guide junior team members, and drive innovation. Build predictive models for campaign optimisation, customer segmentation, and price elasticity. Design and implement AI-powered solutions to solve complex marketing challenges. Use machine learning and statistical techniques to analyse trends and improve business outcomes. Work with cross-functional teams and … and managing data science teams. Deep knowledge of media measurement techniques, such as media mix modelling. Experience with advanced AI techniques, including NLP, GenAI, and CausalAI. Familiarity with MLFlow, API design (FastAPI), and dashboard building (Dash). If this role looks of interest, reach out to Joseph Gregory. #J-18808-Ljbffr More ❯
Employment Type: Full-time
Posted:

Lead Data Scientist

City of London, London, United Kingdom
Harnham
team leadership. What You’ll Do Oversee data science projects, guide junior team members, and drive innovation. Build predictive models for campaign optimisation, customer segmentation, and price elasticity. Design and implement AI-powered solutions to solve complex marketing challenges. Use machine learning and statistical techniques to analyse trends and improve business outcomes. Work with cross-functional teams and present … and managing data science teams. Deep knowledge of media measurement techniques, such as media mix modelling. Experience with advanced AI techniques, including NLP, GenAI, and CausalAI. Familiarity with MLFlow, API design (FastAPI), and dashboard building (Dash). If this role looks of interest, reach out to Joseph Gregory More ❯
Posted:

Principal Data Scientist

London Area, United Kingdom
Harnham
team leadership. What You’ll Do Oversee data science projects, guide junior team members, and drive innovation. Build predictive models for campaign optimisation, customer segmentation, and price elasticity. Design and implement AI-powered solutions to solve complex marketing challenges. Use machine learning and statistical techniques to analyse trends and improve business outcomes. Work with cross-functional teams and present … and managing data science teams. Deep knowledge of media measurement techniques, such as media mix modelling. Experience with advanced AI techniques, including NLP, GenAI, and CausalAI. Familiarity with MLFlow, API design (FastAPI), and dashboard building (Dash). If this role looks of interest, reach out to Joseph Gregory More ❯
Posted:

Principal Data Scientist

City of London, London, United Kingdom
Harnham
team leadership. What You’ll Do Oversee data science projects, guide junior team members, and drive innovation. Build predictive models for campaign optimisation, customer segmentation, and price elasticity. Design and implement AI-powered solutions to solve complex marketing challenges. Use machine learning and statistical techniques to analyse trends and improve business outcomes. Work with cross-functional teams and present … and managing data science teams. Deep knowledge of media measurement techniques, such as media mix modelling. Experience with advanced AI techniques, including NLP, GenAI, and CausalAI. Familiarity with MLFlow, API design (FastAPI), and dashboard building (Dash). If this role looks of interest, reach out to Joseph Gregory More ❯
Posted:

Software Engineering Manager (Hands-on .Net, AWS)

Maidenhead, Berkshire, South East, United Kingdom
Hays
You'll need working experience with scaled software architecture & domain: performance, redundancy, failover, clustering etc. You'll also need working experience with source code management patterns and proficiency in API design, development & production. They are embracing AWS here, so previous experience in the Cloud and working with pipelines and containers will serve you well. Same goes for an More ❯
Employment Type: Permanent
Salary: £85,000
Posted:

Engineering Manager

London, United Kingdom
Hybrid / WFH Options
Femtech Insider Ltd
development processes (principles, rules) for the team Coach the team to learn and apply engineering best practices in various areas starting from UI standards and CI/CD to API design and Secure SDLC Continue to form and grow your team - hire and onboard new members, perform training activities, help team members to follow their path for professional More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Java Technical Architect

Manchester, North West, United Kingdom
LA International Computer Consultants Ltd
a difference. We have a great opportunity for a Java Technical Architect to join the team. We are looking for a highly skilled Java Technical Architect to lead the design and development of scalable, high-performance applications and solutions. The ideal candidate will have strong technical leadership skills, deep Java & AWS expertise, and a passion for designing clean and … robust architectures. Key Responsibilities: Architect and design scalable, secure, and robust backend systems using Java and related frameworks. Define best practices and coding standards for development teams. Lead technical discussions, code reviews, and mentoring sessions. Collaborate with senior leadership (PM, Product Owners, Engineering/Clouds Lead), external customers, and stakeholders at all levels to translate complex business and technology … of various architectures, including n-tier, micro services-based applications and event-driven architectures on both on-premises and AWS cloud, leveraging various PaaS/SaaS services including Lambda, API Gateway, Step Functions, Event Bridge, Aurora, DynamoDB, ECS, etc., to support large scale, high-throughput applications and enable real-time data processing. Rich experience in Architecture/Designing, while More ❯
Employment Type: Contract
Rate: £550 - £600 per day
Posted:

Senior Data Engineer

London, South East, England, United Kingdom
Moneybox
technical audiences Desirable skills NoSQL databases (eg. Cosmos DB, DynamoDB, MongoDB) Message queues and event streaming platforms (e.g. Service Bus, Event Hub) Infrastructure-as-code (eg. Terraform) Knowledge of API design principles (REST APIs), authentication, and security Our Commitment to DE&I At Moneybox, we promote, support and celebrate inclusion, diversity and equity for all, so that everyone More ❯
Employment Type: Full-Time
Salary: £0 per annum
Posted:

Senior Backend Engineer - Laravel

United Kingdom
SAM AI Solutions LTD
team to provide guidance and execution on the product roadmap. Key Skills Experience with designing persistence and caching models using both SQL and NoSQL. Strong knowledge of PHP and design patterns, components, tools, concepts, best practices, standards and systems of record is strongly desired. Strong knowledge of MongoDB. Strong understanding of RESTful JSON web API design principles. More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Solution Architect

England, United Kingdom
Narvar
you'll play a critical role in delivering exceptional post-purchase experiences for some of the world's most iconic brands. You'll lead the technical strategy and solution design for our most complex and strategic implementations-ensuring our customers realize maximum value from Narvar's platform. This is a high-impact role that requires a mix of technical … depth, customer empathy, and cross-functional leadership. You'll work closely with customers, project managers, engineers, and product teams to design scalable solutions that drive results-bringing Narvar's products to life in unique and sophisticated environments. Day-to-Day Responsibilities: Partner with Sales Engineering and the Professional Services team to validate scope and feasibility for strategic implementations of … Narvar full product suite. Deeply understand each customer's eCommerce and retail operations-including fulfillment, delivery, returns, and customer communication-to design solutions that solve real-world pain points. Develop solution architecture, integration strategies, and technical delivery plans that align Narvar's platform capabilities with each brand's business goals and operational constraints. Lead technical discovery and solution design More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Development Team Leader

London, United Kingdom
Hybrid / WFH Options
SThree Management Services
exposure to cyber security risk is avoided. What skills and knowledge are we looking for? Building web applications on a Java technology stack with a React front end. RESTful API design and implementation. Experience with test-driven development and test automation frameworks and tools. Experience with infrastructure-as-code technologies such as Terraform. Experience of working in Agile … software development teams and across the full software development life cycle. Experience of building solutions using Liferay DXP would be beneficial. Azure Integration Services (API Management, Service Bus, Event Hub). Knowledge of Microsoft Identity Management solutions (Azure AD, Azure AD B2C). Cloud computing architectures and fundamentals like security, performance, and scalability, with experience of working with cloud More ❯
Employment Type: Permanent
Posted:

Development Team Leader

London, South East, England, United Kingdom
Hybrid / WFH Options
Sthree
exposure to cyber security risk is avoided. What skills and knowledge are we looking for? Building web applications on a Java technology stack with a React front end. RESTful API design and implementation. Experience with test-driven development and test automation frameworks and tools. Experience with infrastructure-as-code technologies such as Terraform. Experience of working in Agile … software development teams and across the full software development life cycle. Experience of building solutions using Liferay DXP would be beneficial. Azure Integration Services (API Management, Service Bus, Event Hub). Knowledge of Microsoft Identity Management solutions (Azure AD, Azure AD B2C). Cloud computing architectures and fundamentals like security, performance, and scalability, with experience of working with cloud More ❯
Employment Type: Full-Time
Salary: Competitive salary
Posted:

Javascript Senior Software Engineer (AI SDK)

London, United Kingdom
Hybrid / WFH Options
Tether Operations Limited
of the new and cutting edge Tether AI SDK. Developer-Facing SDKs & APIs Tether is committed to delivering world-class developer experiences through robust and intuitive SDKs. You will design, build, and maintain modular, versioned SDKs that abstract complex backend logic into clean, usable interfaces - enabling seamless integration with Tether's platform across various client environments. Performance & Reliability at … Scale SDKs must be fast, lightweight, and reliable - even when performing heavy and demanding operations. You'll design resilient logic (retry policies, offline handling, batching) and contribute to the scalability of platform-facing interfaces and services powering the SDKs. Security-First Engineering You'll embed best-in-class security practices directly into the SDK architecture, including secure communication, encrypted … working with the Tether ecosystem. +6 years of experience working with Nodejs/JavaScript in production environments. Proven track record in designing and maintaining developer-facing SDKs (npm packages, API clients, or instrumentation libraries) Strong understanding of modular architecture, versioning strategies, and semantic API design Have actively participated in the development of a complex platform Ability to More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Java Developer

Manchester, North West, United Kingdom
InfinityQuest Ltd,
Proficiency in Lombok JUnit Swagger and modern web architecture Experience designing and developing reusable frameworks Strong understanding of microservices distributed systems and cloudnative development Handson experience with Kafka and API design RESTGraphQL Familiarity with CICD tools and containerization technologies More ❯
Employment Type: Permanent
Salary: £70,000
Posted:

.Net Full Stack Developer (React) Remote UK Only

London, South East, England, United Kingdom
Hybrid / WFH Options
Arden Resourcing Limited
on the development ticket logging software and that they are actioned in line with the development processes Upgrade Existing Green field projects Technical Skills: .Net React Typescript PostgreSQL Web Api design Entity Framework Core Benefits Your work will have tangible real-world impact Modern Tech Stack: Develop software using the latest technologies and tools. They invest in modern More ❯
Employment Type: Full-Time
Salary: £35,000 - £45,000 per annum
Posted:

Remote Clojure Tech Lead - Previse

London, United Kingdom
Hybrid / WFH Options
WorksHub
and Systems Developers to develop high-quality, pragmatic solutions Act as Subject Matter Expert by understanding the capabilities and limitations of tools and tech stack and leverage it to design solutions with minimal business interruptions Ensuring QA coverage and automation is fit for purpose enabling continuous development with end to end, smoke testing and test automation designs Providing occasional … 3rd level support for information security enhancements and due diligence responses. Interact with external partners and clients to design solutions Be part of a world class, cross-functional team solving real world problems What you'll need to succeed: Excellent interpersonal skills and stakeholder management are essential Technical experience and up to date knowledge of the modern frameworks, enterprise … independently Desirable skills, experience and knowledge: Python and Clojure/other functional programming language knowledge and experience Strong project and change management skills Proven experience as a technical lead API design/development experience SQL skills and database knowledge Experience of various software development methodologies and best practices - Kanban, Scrum, Waterfall, hybrid, etc Who Are You A self More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

AI Engineer

City, London, United Kingdom
Spinks a trading division of Harvey Nash Plc
experienced Engineer to support and help lay the foundations for their Agentic AI Journey. What you'll do: Architect and deploy robust, multi-agent systems using Google's ADK Design and implement advanced RAG pipelines to provide agents with deep contextual understanding Design, build, and maintain a suite of secure and scalable Model Context Protocol MCP Servers Own … the full life cycle of agent development, from initial design and prototyping to deployment, monitoring, and continuous improvement Experience required: Proven background in similar AI/ML Roles Strong proficiency in Python & SQL Demonstrable experience with RAG, Agentic AI, Googles ADK (Or similar LLM Application frameworks), API Design & Consumption Role details: AI Engineer Hybrid - 3 days p More ❯
Employment Type: Permanent
Salary: GBP 60,000 - 70,000 Annual
Posted:

VP of Engineering

London, United Kingdom
RVU Co UK
solutions for both immediate and long-term impact. Own data governance, the data architecture and champion robust data orchestration and integration across all systems, including complex APIs and system design (internal and external). Develop and execute a comprehensive data infrastructure + strategy, focusing on stitching together SaaS services and data, and managing migrations (e.g., connecting comms together). … and evolving environments. Deep understanding of public cloud environments (e.g., AWS, Azure, GCP) and how to best exploit capabilities and manage execution costs. Expertise in data orchestration, integration, and API design for complex systems. Experience with data infrastructure strategy and managing significant data migrations and Salesforce integrations. A track record of managing technical debt and balancing short-term More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Python Contractor

City of London, London, England, United Kingdom
Ncounter
orchestration tools (e.g., Argo), and message buses like Kafka Practical knowledge of Postgres or similar databases Proven experience building real-time or batch AI/ML pipelines with strong API design (Bonus) Exposure to LLMs, vector databases, transcription pipelines, or RAG systems (Bonus) Prior work in Defence, aerospace, or national security environments Why This Project? This isn’t More ❯
Employment Type: Contractor
Rate: £700 - £800 per day
Posted:

Web Developer

Rossendale, Lancashire, North West, United Kingdom
Hybrid / WFH Options
Chroma Recruitment Ltd
Strong experience with native PHP and MySQL . Understanding of CSS3, SCSS and Tailwind?CSS. Excellent communication skills and a collaborative, enthusiastic mindset. Desirable Skills: Experience with RESTful APIs design and integration. Knowledge of CI/CD pipelines , automated testing , or cloud services (e.g. AWS). If this role is of interest, then please get in touch with Julia More ❯
Employment Type: Permanent, Work From Home
Salary: £35,000
Posted:

Senior iOS Engineer (Inbox)

London, United Kingdom
Hybrid / WFH Options
Proton AG
stack is built upon Alamofire, using a generic interface to easily de-serialise objects of a certain type. Our testing stack comprises of unit tests for business logic, stubbed API tests for pseudo-integration tests, snapshot tests for UI, and XCUITest for testing user input and sequencing. We we are looking for: You have experience in iOS or macOS … interaction, usability, and providing an excellent user experience Demonstrated experience driving change within an organization and leading complex technical projects Extensive experience building maintainable and testable code bases, including API design and unit testing techniques Extensive experience with multithreading programming and mobile memory management A strong grasp of scalable software architecture and software engineering best practices An intuition … for optimal user experience and design Even if you don't meet all the requirements listed above, but feel you could still be a great fit, please still apply. What We Offer Office First: Collaboration is easier and more effective in person, which is why we have offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje, and Taipei. More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

CPQ Engineer - Product Configurator team

Biggleswade, Bedfordshire, United Kingdom
Hybrid / WFH Options
Kramp
easily customize products based on their needs in areas like hydraulics, mechanics, electronics, and drive systems. This position is based in Varsseveld &Utrecht. What will you be busy with: Design and build CPQ configuration models that translate complex product logic into scalable, maintainable solutions using Tacton and SolidWorks. Continuously improve and optimize existing models , ensuring performance, accuracy, and alignment … with evolving business needs. Collaborate with cross-functional teams to gather requirements, understand use cases, and deliver effective CPQ solutions. Take end-to-end ownership of model implementation - from design through testing and validation, to deployment and iteration. Support internal users and stakeholders , helping them understand and effectively use CPQ capabilities. Develop user-facing UI elements to ensure smooth … CPQ engineering or a similar role Proficiency in Scripting languages ( e.g. JavaScript, Powershell or others) Experience with Tacton and Solidworks or readiness to learn them Hands-on experience with API design and implementation. Solid command of SQL and a range of Database technologies. Familiarity with C# is a plus. What do we offer ? We are an ambitious, fast More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead Software Developer - OutsideIR35 - Wealth Manager - London

London, United Kingdom
Oliver James Associates Ltd
Manage, mentor, and motivate a skilled development team across a broad tech stack. Design and develop scalable, secure, and high-quality software in line with architectural standards. Uphold and enhance coding and testing standards through peer reviews and automated/manual testing. Lead initiatives to improve efficiency, reduce technical debt, and modernise systems. Collaborate with Delivery/Project Managers … Support team. Stay current with industry certifications and contribute to strategic development initiatives. Mentor and coach team members, promoting a culture of continuous improvement. Skills: SQL Server (T-SQL) , API Design & Development Strong analytical skills with the ability to solve complex technical issues. Proven leadership with excellent stakeholder engagement at all levels. Experience in Agile methodologies. Adaptable and More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer, Native UI

Cambridge, Cambridgeshire, United Kingdom
Roku, Inc
finding and taking on a feature or project simply because that problem needs to be solved and shipped. But that individual must work together with different engineering teams, UI design, product teams, QA, and business leadership to make things happen, which means that engineers succeed here because they can maintain that independent spirit and motivation within a deeply collaborative … programming experience with C++ and Embedded Linux or Native Application Development In-depth understanding of Linux, tools, libraries, and open source development Proficiency in AI Assisted programming Understanding of API design considerations and tradeoffs Familiarity with tools and libraries such as Boost, PlayReady, ALSA, DIAL a plus Experience with memory management and multi-threaded development Experience with OpenGL More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:
API Design
10th Percentile
£50,000
25th Percentile
£58,125
Median
£75,000
75th Percentile
£87,500
90th Percentile
£109,250