26 to 50 of 51 API Design Jobs in the South East

applications and platforms Mentor and review work of other engineers to promote best practices Create durable, reusable software frameworks and patterns leveraged across teams Design and govern agentic AI systems, including multi-agent workflows and human-in-the-loop controls Establish engineering standards for LLM-based applications, ensuring safety … decisions and engineering practices for scalable software Foster a culture of innovation and continuous improvement Required qualifications, capabilities, and skills Practical experience delivering system design, application development, testing, and operational stability at enterprise scale Experience designing and deploying production AI/ML systems, including LLM-based applications and agentic ...

change where relevant. Offer technical assistance and support across the company. Liaise with third‐party software providers throughout the lifecycle of projects, from design and development to support and maintenance. Required Skills & Experience Proven leadership skills with the ability to support, guide, and delegate effectively. Strong communication and interpersonal … ability to adapt and fix legacy code. Experience planning, coordinating, and delivering testable software in scaled Agile environments. Solid knowledge of software structures, architectures, design patterns, and modern development processes. Minimum 5 years’ experience in C# development. Hands‐on expertise in the following: .NET Core 3.1 ASP.NET MVC (Core ...

senior hands‐on developer within the ROAM Technical Services team, delivering robust C#/.NET solutions. Own complex development tasks from analysis and design through implementation, testing, deployment and support. Provide technical guidance, code review and mentoring for junior and intermediate developers. Improve software quality through maintainable architecture, automated … development. Qualifications/Requirements: 5+ years’ professional software development experience, with strong commercial experience in C# and .NET/.NET Core. Proven ability to design, build, test and maintain production‐grade services, APIs and integrations. Strong understanding of REST API design, service‐oriented architecture, data modelling ...

Ideally with 2+ years with Go but open to similar programming experience) Solid grounding in Kubernetes, Docker, and CI/CD Comfortable with REST API design, SQL, and microservices architecture Experience with test automation, unit and end-to-end testing Cloud experience (any major provider), Git, and Agile ...

skilled Java Software Engineer with a growing interest and demonstrated exposure to AI/ML integration. This role is primarily Java-centric — you will design and build cloud-native microservices on our BPA (Beyond Policy Administration) platform — with the expectation that you actively apply AI tooling and patterns … prototype level. Role Details Location: London Experience: 4–7 years of overall software engineering experience Engagement Model: Full-time, Product Engineering Job Responsibilities Design and implement RESTful APIs and microservices using Java 17+ and Spring Boot 3.x. Build and maintain business logic within the BPA platform, ensuring correctness, performance ...

development role. You will be expected to have years of experience of commercial development experience utilising: TECHNICAL SKILLS: Deep functional knowledge or hands on design experience with Web Services (REST, SOAP, etc) Understanding of API design and documentation .NET 8.0/10 (C#) .Net CORE (C#) .NET … Framework 4.7+ Angular (v2+), JavaScript Net MVC 5.0 & Web Api 2 ORM (EntityFramework/nhibernate/Dapper) MS SQL Server 2008+, DB2 Dependency injection and frameworks, e.g. Unity Practical experience with TDD and CI/CD OTHER SKILLS: An aptitude for problem analysis and resolution and eye for details. ...

production-quality code. Key Responsibilities You’ll play an important role in designing, building and delivering the AI platform by: Building and evolving the API gateway and routing layer connecting teams to multiple LLM providers. Developing failover, load-shedding and resilience capabilities for periods of provider degradation. Designing orchestration … registration and discovery tooling for reusable AI capabilities. Establishing API design, versioning and promotion workflows to move capabilities from experimentation into production. Implementing RBAC and OIDC-based access controls. Supporting secure API key issuance, rotation and revocation. Applying high standards across testing, observability and technical documentation. Using ...

working on the underlying systems that make complex visualisations fast, accurate, and scalable. The challenges range from rendering performance and interaction design through to algorithms, graphics, API design, and numerical correctness. What you’ll be doing Designing and building core charting features used by developers around … exceptionally high technical standards High levels of ownership and autonomy Small team, significant impact Opportunity to deepen expertise in performance, graphics, visualisation, and systems design Package Salary up to £200,000 Hybrid working (London) Private healthcare Pension Additional benefits If you’re interested in building the technology behind modern ...

Service Operations, Data & Analytics, Security & Quality Compliance, Transformation, Application Development, and Enterprise Platforms. Key Responsibilities Job Overview Architecture and technical strategy Contribute to the design and architecture of core platform components and evaluation systems, making the load‐bearing technical decisions and bearing accountability for their reliability, scalability, and long … capabilities are built, evaluated, and deployed across the company, and define a coherent platform vision that scales beyond your immediate team. Design reusable abstractions, SDKs, and services for model integration, prompt management, experimentation, and deployment that establish organization‐wide patterns and reduce duplicated effort. Research and delivery excellence Help ...

Overview Keysight is at the forefront of technology innovation, delivering breakthroughs and trusted insights in electronic design, simulation, prototyping, test, manufacturing, and optimization. Our ~15,000 employees create world‐class solutions in communications, 5G, automotive, energy, quantum, aerospace, defense, and semiconductor markets for customers in over 100 countries. Learn … quality solutions. This position sits at the intersection of protocol standards, software engineering, and system configuration APIs, within a multi‐site international environment. Responsibilities Design, develop, integrate, and optimize APIs for system‐level configurability . Validate 3GPP protocol configurations , with specific focus on RRC configuration . Support both ...

Engineer | £ | Hybrid Build the AI systems our users actually experience. We're looking for a dynamic AI Engineer (5+ years) to design, build, and deploy autonomous, user-facing AI solutions - LLM-powered applications, agentic workflows, and intelligent systems that perform reliably at scale, not just in a demo. What … Degree in Computer Science (or equivalent) with strong AI/ML/NLP foundations Strong Python skills, familiarity with Java/Kotlin, and solid API design experience Hands-on experience with LangChain, LangGraph, and LLM APIs (OpenAI, Anthropic, etc.) Skilled in prompt engineering and orchestrating AI agents/ ...

systems. As a CesiumAstro software team member, you will be responsible for software designs from concept through production, including product roadmaps, block diagrams, detailed design and coding, analysis, test, qualification, and in-orbit support. The ideal candidate will have development experience at nearly every level of the software stack … experience in software testing and high-reliability qualification, as well as software engineering and software project management practices. The successful candidate will present engineering design review materials to our customers and executive team, as well as participate in proposal-writing efforts. As such, excellent written and verbal communication skills ...

with support for the teams and scientists who depend on them. Key responsibilities include: Own a group of device controllers end to end, covering API design, implementation, rollout and ongoing operational health. Make services robust against the ways real instruments fail. Bring devices onto our current framework ...

focused on building a new platform that sits above its existing search technology stack. The project will involve creating a lightweight abstraction layer and API architecture that simplifies the user experience, whilst providing a foundation for future search platform evolution. This is an opportunity to work on a greenfield … quality solutions. Key responsibilities include: Designing and developing .NET Core services and APIs Building abstraction layers between front-end applications and search technologies Developing API services Working with Azure cloud services Designing and maintaining SQL databases Collaborating with senior stakeholders and engineers to refine requirements Contributing to architecture ...

systems. As a Cesium software team member, you will be responsible for software designs from concept through production, including product roadmaps, block diagrams, detailed design and coding, analysis, test, qualification, and in-orbit support. The ideal candidate will have development experience at nearly every level of the software stack … experience in software testing and high-reliability qualification, as well as software engineering and software project management practices. The successful candidate will present engineering design review materials to our customers and executive team, as well as participate in proposal-writing efforts. As such, excellent written and verbal communication skills ...

immediate requirement for an experienced C/Linux Software Developer. Key Skills: Software Developer, Software Engineer, C, Linux, Autotools, LDAP, Active Directory, Terraform, OpenTofu, API Location: Hybrid but must be able to reach the office near Lymington - SO41 9AZ Salary: £60,000 - £65,000 + benefits Essential Skills Experience … equitant system initialisation frameworks and how they operate at a low level Understanding of secure configuration delivery and deployment auditability of newly provisioned systems API Design & Implementation (maybe): Experience/Familiarity with: Working with OpenAPI (Swagger) specifications to define service interfaces Implementing APIs in C or similarly ...

immediate requirement for an experienced C/Linux Software Developer. Key Skills: Software Developer, Software Engineer, C, Linux, Autotools, LDAP, Active Directory, Terraform, OpenTofu, API Location: Hybrid but must be able to reach the office near Lymington - SO41 9AZ Salary: £60,000 - £65,000 + benefits Essential Skills Experience … equitant system initialisation frameworks and how they operate at a low level Understanding of secure configuration delivery and deployment auditability of newly provisioned systems API Design & Implementation (maybe): Experience/Familiarity with: Working with OpenAPI (Swagger) specifications to define service interfaces Implementing APIs in C or similarly ...

Xe.com is seeking a senior full-stack engineer to own problems end-to-end from API design to backend services, with a focus on cross-border payments. You will design and ship customer-facing features, improve platform reliability, and mentor mid-level engineers in a smallteam structure. … will work with product, design, and compliance to shape the platform, use AI-assisted tools daily, and help modernize services across the stack. This role emphasizes ownership and technical leadership. #J-18808-Ljbffr ...

systems. As a Cesium software team member, you will be responsible for software designs from concept through production, including product roadmaps, block diagrams, detailed design and coding, analysis, test, qualification, and in-orbit support. The ideal candidate will have development experience at nearly every level of the software stack … experience in software testing and high-reliability qualification, as well as software engineering and software project management practices. The successful candidate will present engineering design review materials to our customers and executive team, as well as participate in proposal-writing efforts. As such, excellent written and verbal communication skills ...

Gravity squad within the Product Experiences Domain, collaborating with product managers and engineers to deliver scalable, secure solutions for IoT management. You’ll tackle API design, data flows, and front-end interfaces while advancing CI/CD practices and monitoring. #J-18808-Ljbffr ...

Xe.com is hiring a senior backend engineer in Bracknell to own problems end-to-end, from API design and data modeling through to service implementation, production reliability, and launch. You will use AI tools daily and help move money across platforms. You'll design and modernize backend ...

guide a squad through architecture, development, delivery and production operations while coding hands-on to tackle complex problems. You’ll own system architecture and API design, shape technical decisions, and partner with Product Managers on roadmaps and priorities. This role blends leadership with hands-on development ...

Back EndHybrid – 2 days per week in the officeJava, PostgreSQL, APIWe are looking for an experienced Back End Developer with excellent Java, PostgreSQL and API skills due to software development moving from an outsourced model to in-house. Working alongside the development team you will: Be highly involved with … reviews with the outgoing external team. Gain understanding of the current Java application architecture – service boundaries, dependency injection patterns, build system, and deployment configuration. Design and implement new back-end features, enhancements, and bug fixes in Java, following agreed coding standards and architectural principles. PostgreSQL data model – schema design ...

efforts to make an impact at BlackRock. In this role, you can expect to: Provide technical leadership, set architectural direction, and drive key design decisions across multidisciplinary teams. Design, build, and operate production AI/ML systems across areas such as generative AI, intelligent agents, predictive modeling …/ML applications. Experience with containerization and orchestration technologies, such as Docker and Kubernetes. Demonstrated ability to lead complex technical solutions from architecture and design through production deployment, operation, and continuous improvement. Strong problem-solving, collaboration, and communication skills, with the ability to influence technical decisions across multidisciplinary teams. ...

efforts to make an impact at BlackRock. In this role, you can expect to: Provide technical leadership, set architectural direction, and drive key design decisions across multidisciplinary teams. Design, build, and operate production AI/ML systems across areas such as generative AI, intelligent agents, predictive modeling …/ML applications. Experience with containerization and orchestration technologies, such as Docker and Kubernetes. Demonstrated ability to lead complex technical solutions from architecture and design through production deployment, operation, and continuous improvement. Strong problem-solving, collaboration, and communication skills, with the ability to influence technical decisions across multidisciplinary teams. ...