1 to 25 of 42 API Design Jobs in the South East

Kong API Gateway Specialist

Hiring Organisation
Infoplus Technologies UK Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£400.00 - £450.00 per day
Summary We are seeking an experienced Kong API Gateway Specialist to lead the development, implementation, and governance of our enterprise API ecosystem. This role will be responsible for establishing API governance standards, designing and managing API lifecycle processes, and driving the adoption of best practices across … integration and middleware platforms. The ideal candidate will possess deep expertise in Kong API Gateway, API management, security, integration architecture, and governance frameworks. They will work closely with enterprise architects, development teams, security teams, and business stakeholders to ensure APIs are secure, scalable, reusable, and aligned with organizational ...

Senior Platform Engineer

Location
Reigate, England, United Kingdom
technical input, guidance and leadership to the team (including code quality, best practices, processes, some aspects of release management, etc.). Assist in the design and documenting of solutions meeting functional and non-functional requirements. Lead by example getting directly involved in the day-to-day delivery of work … bring Platform and controlplane engineering Practical experience designing and developing management and controlplane capabilities for lineofbusiness or SaaS applications, including stack/environment management, API design for platform services, and developer/operator UX. Experience working with or designing Azure stamp-based or scale‐unit architectures, including multi ...

Senior Software Engineer

Hiring Organisation
The Portfolio Group
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 per annum
integration layer behind a new generation of AI-powered products. This is a genuinely full-stack engineering role, combining production-grade backend development, API design, AI integrations and frontend engineering. You'll work across the full application lifecycle, designing the services and interfaces that connect AI capabilities … products customers and colleagues use every day. You'll play a key role in building MCP integrations, agent-to-agent connectivity and robust API services, while also developing responsive, accessible interfaces in React and TypeScript. What you'll be doing Own the application and integration layer of AI products ...

Kong API Management

Hiring Organisation
E-Solutions IT Services UK Ltd
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£400.00 - £450.00 per day
Kong API Management/API Engineer London - 5 days/week onsite Required qualifications, capabilities, and skills · Programming languages: Advanced proficiency in one or more programming languages - Golang or Lua Script. · Cloud-native operations: Practical, hands-on cloud-native experience. · API management: Professional experience with API … management technologies (e.g., Apigee, Kong, or MuleSoft). · API design: Strong understanding of the OpenAPI Specification (OAS) for RESTful APIs. · API security: Hands-on experience securing APIs at the gateway, including OAuth 2.0, OpenID Connect (OIDC), JWT validation, key-auth, and mutual TLS (mTLS). · DevOps toolchain ...

Associate Director, Connectivity

Location
Oxford, England, United Kingdom
level relationships with Restech and Supplier partners, acting as the senior technical face of Tripadvisor in those conversations. Stay genuinely hands‐on: dig into API design, integration architecture, and connectivity issues directly, not just from a distance. Lead, grow and mentor a team of tech leads and engineers … changes in remit, priorities or structure. Excellent communication and management skills, with the technical credibility to match. Data/analytical mindset, ability to design and build relevant reports Practicalities This role is remote in the UK, ideally someone based in or around London You’ll want to build real ...

BTP Integration Architect (SAP)

Hiring Organisation
Vbeyond
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
govern the end-to-end integration strategy for the S/4HANA Bluefield migration, ensuring alignment with enterprise architecture principles. Architect BTP Solutions: Design and architect robust integration scenarios using the full suite of SAP BTP services, with a heavy focus on SAP Integration Suite (Cloud Integration/… API Management, and Event Mesh. Govern Technical Design: Lead design authority sessions to review and approve all integration patterns, ensuring they are standard, reusable, and fit for purpose. Bluefield Migration Expertise: Provide expert guidance on the unique integration challenges of a Bluefield (system conversion) migration, including ...

Senior Software Engineer

Location
Reading, England, United Kingdom
Engineering Lead, and fellow engineers to look after the shared in‐house components consumed by other development squads — including auth, audit, developer portal, and API gateway. You’ll be joining us at a pivotal moment! We're transitioning to a product‐driven culture where your voice and expertise will … networking) Focuses on usability, adoption, reliability, and long‐term evolution As a Senior Software Engineer, you will combine technical depth, product thinking, and systems design to ensure these shared services are robust, scalable and developer‐friendly. Product & Ownership Design, build and evolve shared application services used across multiple ...

Backend Developer

Location
Oxford, England, United Kingdom
role and a brief description of some of the key tasks to be performed. This list is not totally exhaustive. Major Responsibilities Design, develop, and maintain scalable back-end services, APIs, integration platforms, databases, and Microsoft Azure cloud-native solutions to deliver defined requirements across regulated and non-regulated … modern development tooling to maintain code quality and consistency. Develop unit, integration, and automated tests and contribute to verification evidence, code quality, and design reviews. Participate in daily stand-ups, design reviews, and collaborative team activities with internal and external teams, supporting Product Owners and Business Analysts ...

Software Engineer

Location
Milton Keynes, England, United Kingdom
building its Payment Facilitator (PayFac)/Acquiring platform and is looking for a hands-on, experienced Software Engineer to take full ownership across design, build, and delivery. This is not a traditional engineering role — there is no rigid separation between engineering and product. You will work directly alongside … product instinct to define scope and prioritise work independently. Payments or fintech exposure is required; what matters is your ability to design and build reliable, scalable systems and to move fast without sacrificing quality. A generalist mindset — able to deliver in key areas, learn others, outsource/work with ...

Software Architect / Senior Developer

Location
Horsham, England, United Kingdom
software development Strong expertise in .NET development, C#, and Visual Studio Experience developing .NET based web services and distributed systems Demonstrated ability to design and implement scalable, maintainable software architectures Experience with architectural patterns (microservices, event-driven, layered architecture, etc.) Strong understanding of software design principles (SOLID …/CD pipelines Familiarity with security architecture principles and threat modeling Experience in the cybersecurity, forensics, or defense technology sectors Understanding of database design and data architecture patterns Experience with API design and RESTful/GraphQL architectures Knowledge of performance optimization and scalability patterns Formal architecture training ...

Software Architect (UK)

Location
Horsham, England, United Kingdom
negotiable depending on experience) Responsibilities and Duties The Software Architect role requires a professional who combines deep technical expertise with strategic vision to design and guide the implementation of scalable, maintainable software systems. They will be responsible for defining architectural standards, evaluating technology choices, and ensuring development teams have … software development Strong expertise in .NET development, C#, and Visual Studio Experience developing .NET based web services and distributed systems Demonstrated ability to design and implement scalable, maintainable software architectures Experience with architectural patterns (microservices, event‐driven, layered architecture, etc.) Strong understanding of software design principles (SOLID ...

Integration Developer - Technical Lead

Hiring Organisation
Morgan Philips Specialist Recruitment
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 - £100,000 per annum
data services, and cloud platforms. You will own end-to-end integration architecture, champion modern engineering standards, and guide engineers through best practices in API design, cloud-native development, and scalable integration patterns. This is a hands-on leadership role, ideal for someone who enjoys coding, problem-solving … steering technical direction while mentoring engineers and collaborating with product, data, and platform teams. What You'll Be Doing Lead the design, development, and delivery of integration solutions across a diverse technology ecosystem Develop secure, scalable APIs, services, and messaging-based integrations Champion best practices in engineering, DevOps, automation ...

Solution Architect

Hiring Organisation
Sustain Recruit
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 per annum
background and has moved into Solution Architecture over the last few years. You will work at the intersection of business and technology, helping to design practical, scalable and secure solutions across a complex enterprise application landscape. This is a hands-on architecture role where you will work closely with … practical implementation. This role would particularly suit someone with approximately 2–3 years' experience in Solution Architecture, Technical Architecture or a senior technical design role , supported by a previous career in software engineering or development. Key Responsibilities Translate business requirements into clear and practical technical solution designs. Produce architecture ...

C# Developer / Technical Lead

Hiring Organisation
Client Server
Location
Bracknell, Berkshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£95,000
development, delivery and production operations whilst remaining hands-on, writing production code and tackling the most technically complex problems. You'll own system architecture, API design, technical decisions, design reviews and code quality and partner with Product Managers on roadmaps, delivery plans and priorities. Providing technical leadership … within a software engineering team You have strong backend development skills with C# .Net (would also consider other OO languages) You have strong system design experience, particularly distributed systems and microservices You have frontend experience with Vue.js, React or modern Angular You have a good knowledge ...

Software Developer / Team Lead C# .Net

Hiring Organisation
Client Server
Location
Bracknell, Berkshire, UK
Employment Type
Full-time
development, delivery and production operations whilst remaining hands-on, writing production code and tackling the most technically complex problems. You'll own system architecture, API design, technical decisions, design reviews and code quality and partner with Product Managers on roadmaps, delivery plans and priorities. Providing technical leadership … leadership within a software engineering teamYou have strong backend development skills with C# .Net (would also consider other OO languages)You have strong system design experience, particularly distributed systems and microservicesYou have frontend experience with Vue.js, React or modern AngularYou have a good knowledge of SQL and relational databasesYou ...

Senior Software Developer

Hiring Organisation
Young's Employment Services Ltd
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £75,000 per annum, Negotiable
senior engineering role and you'll be joining at a point where the architecture, delivery approach and product direction still matter. You'll design and ship production services, contribute to a structured strangler-fig migration, and use AI-assisted development tools such as Cursor and Claude Code as part … suit an experienced Senior Developer, or a strong Developer ready to step up in a collaborative, senior-led environment. What You'll Be Doing Design, build and support cloud-based services in .NET 10 across Azure API Management, Azure SQL and the wider Azure platform. Help modernise ...

Infrastructure Developer

Hiring Organisation
Ncounter
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£110,000 - £130,000 per annum
services and automation that connect complex infrastructure environments. The wider goal is to remove manual infrastructure processes and replace them with reliable, self-service, API-driven services. You will design and develop integrations across areas including bare-metal compute, networking, storage, cloud and workload platforms. A major part … role will involve building API services around a central CMDB, creating a reliable source of truth that can drive automated provisioning, configuration and infrastructure lifecycle management. Responsibilities will include: • Building production-grade services and automation primarily in Python • Designing REST APIs and integration layers across infrastructure platforms • Developing CMDB ...

Senior Software Engineer (Full Stack)

Location
Farnborough, England, United Kingdom
from me? Software engineering experience, including substantial hands‐on delivery using: Java (Java 8 and modern Java versions such as 17 and 21) REST API design and implementation Modern SPA development experience (required) using React and TypeScript, Angular, or Vue. Strong understanding of design patterns …/C++ experience. Perl, Python, and/or bash scripting experience. Experience contributing to or supporting test automation initiatives (UI and/or API). Clearance Requirements Successful candidates will be required to be willing and able to obtain UK Security Clearances - this requires a minimum of 5 years ...

Software Engineer, React, Node.js, TypeScript

Hiring Organisation
Corriculo Ltd
Location
Reading, Berkshire, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £60,000 per annum
React and high-volume, low-latency web systems at scale Solid hands-on ability across several of the following: Node.js, TypeScript, Express, robust API design, and data stores including SQL, Redis, or Elasticache Demonstrable experience shipping complex software products in a real-world B2B or B2C environment, with ...

Experienced .NET Engineer

Location
Maidstone, England, United Kingdom
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 Developer

Location
Stansted Mountfitchet, England, United Kingdom
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 ...

Python / Fullstack Developers

Hiring Organisation
INTEC SELECT LIMITED
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£650.00 - £750.00 per day
with a Python-based backend. The role is hybrid, with 2 days per week required on-site at the client's London office. Responsibilities Design, build and maintain full stack web applications with a Python backend Develop and consume RESTful APIs Work across both backend services and frontend interfaces … Django or Flask) Experience with JavaScript and Typescript Solid frontend experience (React, Vue or similar JS framework) Experience with relational databases (PostgreSQL, MySQL) and API design Familiarity with cloud platforms (AWS/Azure/GCP) and CI/CD pipelines Comfortable working in an agile environment Experience ...

Full Stack Engineer

Hiring Organisation
Oscar Technology
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
need: The fundamentals to build on the client's tech stack - TypeScript, React/Next.js, Node, PostgreSQL and AWS Strong coding fundamentals - data structures, API design, testing, version control, and the judgement to know when to be rigorous and when to ship To be a fanatic user ...

Senior Software Engineer

Hiring Organisation
Arc IT Recruitment
Location
Brighton, East Sussex, United Kingdom
Employment Type
Full-Time
Salary
£70,000 per annum
platform. You'll build, measure and tune services running in the cloud and at the edge, and you'll own them from design through to production. You'll be part of a multi-disciplinary team of engineers, SDETs, DevOps, product and UX, releasing several times a day through … Server/T-SQL, including query tuning, indexing and execution plans High-traffic ecommerce or transactional systems Cloud experience, ideally AWS Strong RESTful API design: versioning, idempotency, caching, OpenAPI/Swagger Production ownership: monitoring and profiling .NET apps (e.g. Datadog, New Relic, CloudWatch) Daily use of AI coding ...

Senior .NET Developer

Hiring Organisation
Pontoon
Location
Bromley, Kent, United Kingdom
Employment Type
Full-Time
Salary
£700.00 - £750.00 per day
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. ...