51 to 75 of 114 API Design Jobs in England

Lead Software Engineer (MongoDB / Node.js / JavaScript)

Hiring Organisation
Adria Solutions
Location
Manchester, North West, United Kingdom
Employment Type
Permanent
Salary
£75,000
support junior and senior engineers Conduct code reviews and uphold engineering best practices Backend Engineering Build and maintain scalable backend services and RESTful APIs Design and optimise MongoDB database solutions Improve and maintain existing backend infrastructure Troubleshoot production issues and implement robust solutions Collaboration & Delivery Work closely with cross … have experience with: MongoDB (data modelling, indexing, aggregation, performance tuning) Node.js and the wider JavaScript/TypeScript ecosystem Express.js and/or Fastify RESTful API design AWS or similar cloud platforms Microservices architecture Testing frameworks (Vitest, Jest, Mocha, etc.) CI/CD pipelines & DevOps practices GitHub workflows Observability ...

SAP BTP Lead

Hiring Organisation
DXC
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Youll collaborate with business and technical teams to drive innovation, modernize architectures, and maximize value from SAPs cloud technologies. What Youll Do: Lead architecture, design, and implementation of solutions using SAP BTP services such as SAP Build, Integration Suite, Event Mesh, AI Core, and HANA Cloud. Define clean-core … Guide teams in building custom apps, workflows, automations, and side-by-side extensions using CAP/RAP and low-code tools. Own integration and API strategies leveraging BTP Integration Suite (APIs, OData, REST/SOAP, event-driven patterns). Provide technical leadership, mentoring developers and ensuring adherence to coding ...

Senior Full-Stack Developer

Hiring Organisation
Goodman Masson
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £70,000 per annum
work across frontend and backend systems, help shape technical solutions, and ensure best practices are followed throughout the development lifecycle. Key Responsibilities Design, develop, and maintain high-quality software solutions across the full stack Build and integrate APIs, ensuring secure and efficient data exchange Develop user interfaces using modern … Requirements Proven experience as a full-stack developer Strong proficiency in .NET (C#), JavaScript, and modern frontend frameworks Solid experience with SQL databases and API design and integration Excellent problem-solving, communication, and organisational skills Ability to work proactively on independent projects and collaboratively within a team Familiarity ...

Junior DevOps/Backend Developer

Hiring Organisation
Viewture
Location
Pulborough, England, United Kingdom
Haves ✨ Knowledge of containerisation technologies (Docker) Familiarity with Infrastructure as Code (ARM templates, Bicep, Terraform) Exposure to PowerShell or Python scripting Experience with API design principles and RESTful services Knowledge of security best practices and OWASP guidelines Previous experience in fintech, SaaS, or high-growth startups Benefits ✅ Hybrid ...

Net/Azure Architect

Hiring Organisation
WeDoTech
Location
Remote work, Farringdon, Greater London, United Kingdom
Employment Type
Permanent
Salary
£85000 - £90000/annum
will be exclusively Microsoft focussed and expand their offering to encompass the Azure ecosystem. Tech:- C#/.Net Expert Azure - Platform and Software Architecture Design Patterns - HLD and LLD Messaging/Queueing - Service Bus Data Ingestion - NoSQL/Postgres API Design and Development - RESTFul Cloud agnostic mindset ...

Solutions Architect

Hiring Organisation
Addition
Location
Milton Keynes, Buckinghamshire, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £71,000 per annum
high-impact transformation programs that drive innovation and business success. In this dynamic, full-time position based in Milton Keynes, you will lead the design and delivery of cutting-edge architecture solutions across strategic initiatives such as Contract Management Transformation, Fleet Programmes, and Digital Innovation. Collaborate with global teams … enterprise integration, messaging models, and Agile/Lean practices Experience with EA tools (LeanIX, Alfabet, Bizzdesign, Sparx EA) Cloud platform expertise (AWS, Azure) API design, event-driven and microservices architectures Understanding of SOAP, REST, and modern integration patterns Ability to produce detailed technical designs for diverse audiences Experience ...

Solutions Architect

Hiring Organisation
Method-Resourcing
Location
St. Albans, Hertfordshire, South East, United Kingdom
Employment Type
Permanent
Salary
£95,000
Solutions Architect (Integration | API Design) St Albans (Hybrid) Compensation: £95,000 +Bonus +Equity Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They're seeking a Solutions Architect to lead the end-to-end technical … design of mission-critical platforms and services. The Role: We're seeking an experienced Solution Architect to design scalable, secure, and efficient technology solutions that support a major systems consolidation and migration programme. You will be responsible for planning and documenting the decommissioning of up to 30 disparate ...

Senior .Net Developer

Hiring Organisation
ISR RECRUITMENT LIMITED
Location
South West, United Kingdom
Employment Type
Permanent
Salary
£55000 - £65000/annum (plus excellent company benefits)
locally) c£55,000 to £65,000 per year Pension, Bonuses, Training and Development, etc. Skills and Experience: Expertise in C#, .NET Core, REST API design and backend architecture. Strong SQL skills with the ability to create performant, reliable database logic. Strong understanding of ORM patterns, data mapping … product and offshore teams. Experience integrating services into CI/CD pipelines (GitHub Actions or Azure DevOps). Familiarity with clean architecture, domain-driven design, or similar engineering patterns. Understanding of containerisation workflows (Docker) and AKS operational concepts. Mentoring experience or leadership within engineering teams. Exposure to API ...

Senior Backend Engineer

Hiring Organisation
THE IDOLS GROUP LIMITED
Location
London, United Kingdom
Employment Type
Permanent
systems problems. Skills and experience Strong expertise in Python and modern backend frameworks Deep knowledge of relational databases, particularly PostgreSQL Strong understanding of RESTful API design and microservices patterns Experience working with cloud platforms and containerised environments (Docker, Kubernetes) Experience with CI/CD pipelines, automated testing ...

Senior Platform Software Engineer

Hiring Organisation
Caresoft Global Ltd
Location
Stratford, London, England, United Kingdom
Employment Type
Contractor
Contract Rate
£73.18 per hour
PubSub, Secret Manager). Observability: Experience implementing and utilizing observability and monitoring tools (e.g., Grafana, Splunk) to maintain system health and diagnose issues. API Design: Experience designing and developing REST APIs and associated QA tools. Engineering Practices: Passion for Software Craftsmanship with experience in Pair Programming, Mobbing ...

Junior Back-end Engineer

Hiring Organisation
ivee
Location
London Area, United Kingdom
maintain server-side logic using modern backend frameworks (e.g. Node.js, Python, Go) Work with APIs — designing, integrating, and maintaining RESTful endpoints Support database design and optimisation (e.g. PostgreSQL, MongoDB) Collaborate with front-end and product teams to deliver full-stack features Write clean, testable, and maintainable code Help improve ...

Senior AI Engineer

Hiring Organisation
Chambers and Partners
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
drive smarter decisions and greater efficiency across Chambers and Partners. In this brand new role, role, as part of our Data team, you’ll design and implement intelligent systems that enhance how we use data, streamline operations, and power innovation across our digital platforms. You’ll play … Main Duties and Responsibilities Data & Retrieval Build robust ingestion pipelines for PDFs/Word/Excel/Audio/JSON and semi-structured sources. Design RAG systems: chunking strategies, document schemas, metadata, hybrid/dense retrieval, re-ranking, and grounding. Manage vector/keyword indexes (e.g., Azure AI Search ...

(Senior) Full Stack Engineer

Hiring Organisation
BioTalent
Location
City of London, London, United Kingdom
with potential leadership options A high-autonomy role within a technically rigorous environment Your Responsibilities Own and evolve the React and Next.js application architecture Design and implement scalable UI patterns for complex workflows and data visualisation Define state management strategies for long-running jobs and asynchronous systems Build clean … years of experience building production React applications - React, Next.js, TypeScript Experience deploying and managing applications on AWS using Infrastructure as Code and containerized workflows API Design experience UX/UI & Design systems Experience with state management at scale (e.g. React Query, Zustand, Recoil) Knowledge of authentication, authorisation ...

Staff Software Engineer

Hiring Organisation
Classic Football Company Ltd
Location
Manchester Area, United Kingdom
collaborative Agile environment. You will take ownership of complex Magento and front-end initiatives, influence technical direction, and work closely with Product, Design, and Operations to ensure our platforms remain scalable, secure, and high-performing. Location: Hybrid/Remote flexibility Hours: The role is a full-time position … Responsibilities: Lead the design, development, and maintenance of Magento 2 (PHP) features, modules, and integrations, including REST and GraphQL APIs. Drive front-end development using React (JavaScript/TypeScript), consuming Magento GraphQL endpoints to deliver high-quality customer experiences. Own technical solutions from concept through to production, ensuring quality ...

Senior PHP Full Stack Software Engineer - Supply Chain / Sustainability. Hybrid

Hiring Organisation
RecruitmentRevolution.com
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
want to expand this further - so you’ll help define best practice for AI-enabled engineering across the team. Key Responsibilities: • Lead the design, build and maintenance of custom Moodle plugins, themes and core feature enhancements • Write high-quality, secure, reusable PHP and deliver robust front-end experiences • Architect … across application + infrastructure layers and drive resolution • Lead performance optimisation and scalability improvements • Ensure compliance with accessibility standards, GDPR, and data protection by design • Strengthen QA processes and data integrity (including release readiness) Collaboration & Stakeholder Management: • Work closely with product and design to shape solutions (not just ...

Senior PHP Full Stack Software Engineer - Sustainability

Hiring Organisation
RecruitmentRevolution.com
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 - 80,000 Annual
want to expand this further - so you ll help define best practice for AI-enabled engineering across the team. Key Responsibilities: • Lead the design, build and maintenance of custom Moodle plugins, themes and core feature enhancements • Write high-quality, secure, reusable PHP and deliver robust front-end experiences • Architect … across application + infrastructure layers and drive resolution • Lead performance optimisation and scalability improvements • Ensure compliance with accessibility standards, GDPR, and data protection by design • Strengthen QA processes and data integrity (including release readiness) Collaboration & Stakeholder Management: • Work closely with product and design to shape solutions (not just ...

Senior PHP Full Stack Software Engineer - Sustainability

Hiring Organisation
RecruitmentRevolution.com
Location
EC1V, Bunhill, Greater London, Old Street, United Kingdom
Employment Type
Permanent
Salary
£70000 - £80000/annum + Benefits
want to expand this further - so you’ll help define best practice for AI-enabled engineering across the team. Key Responsibilities: • Lead the design, build and maintenance of custom Moodle plugins, themes and core feature enhancements • Write high-quality, secure, reusable PHP and deliver robust front-end experiences • Architect … across application + infrastructure layers and drive resolution • Lead performance optimisation and scalability improvements • Ensure compliance with accessibility standards, GDPR, and data protection by design • Strengthen QA processes and data integrity (including release readiness) Collaboration & Stakeholder Management: • Work closely with product and design to shape solutions (not just ...

.NET Developer

Hiring Organisation
SYSTEM C HEALTHCARE LIMITED
Location
Liverpool, Merseyside, North West, United Kingdom
Employment Type
Permanent
Salary
£35,000
squad, youll translate user needs into well-designed, well-tested services and APIs, collaborating closely with Product, QA, DevOps and DBAs. What youll do Design, develop and unit-test new features; improve and support existing modules Build and version RESTful APIs using C#/.NET with strong dependency injection …/CD pipelines and test automation with Azure DevOps/TeamCity/Octopus What youll bring Commercial experience in C# .NET and SQL, with API design and versioning know-how Familiarity with REST, dependency injection, JSON and git-based workflows Exposure to Azure (App Services, Functions, Service ...

Senior .NET Developer ASP.NET Core / MAUI

Hiring Organisation
Partnerscale Limited
Location
Bicester, Oxfordshire, South East, United Kingdom
Employment Type
Permanent
Salary
£65,000
Core (MVC and APIs) and Entity Framework Core, alongside cross platform Android apps developed in .NET MAUI. The role involves full lifecycle delivery including design, development, testing and deployment within an agile environment. Youll work with RESTful APIs, JSON based integrations, SQL Server and Azure SQL databases, ensuring performance … improving standards across the team. Required experience: Strong commercial experience with C# and .NET Core/.NET 8+ ASP.NET Core web development and API design .NET MAUI or Xamarin mobile development, ideally Android focused Entity Framework Core including migrations and optimisation SQL Server or Azure SQL database design ...

Full Stack Web Developer

Hiring Organisation
LM RECRUITMENT SOLUTIONS LTD
Location
Stroud, Gloucestershire, South West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
full-stack technologies. Develop new features and functionality for both front-end and back-end components in following best practices. Implement and maintain robust API integrations with internal and third-party systems. Assist in monitoring, troubleshooting, and resolving production issues to maintain system reliability and data integrity. Participate … reviews, testing, and documentation to maintain high standards of code quality. Required Skills & Experience Strong full-stack development experience with Laravel/PHP for API development and front-end frameworks such as Vue.js (or similar). Familiarity with Node.js for working on an existing LoopBack application. Experience with ...

Backend Engineer (TypeScript/Ruby)

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
experiences at scale. Package 💷 £70–90k + 5% bonus 🏢 Hybrid (2 days onsite, London) What you’ll do Own the full lifecycle of services: API design, architecture, deployment, and production Build an internal platform delivering consistent, real-time communications across multiple digital touchpoints Collaborate with Product, Data, Marketing ...

Senior Software Engineer

Hiring Organisation
Fynity
Location
London Area, United Kingdom
senior individual-contributor role within a high-performing engineering team, building asynchronous, message-driven systems designed for scale, resilience, and near-zero downtime. Design and implement high-throughput, low-latency systems processing millions of real-time payment events Build event-driven architectures using modern Java and reactive frameworks Work … extensively with non-blocking I/O, asynchronous flows, back-pressure, and concurrency Contribute to system and API design, focusing on scalability, fault tolerance, and observability Collaborate closely with architects, engineers, and client teams across Europe Operate in Agile environments (Scrum/Kanban) with a strong engineering culture ...

Backend Engineer – Build Scalable, High‐Impact Financial Infrastructure

Hiring Organisation
Albert Bow
Location
London Area, United Kingdom
+ mobile applications Building and maintaining high‐performance APIs and distributed microservices Solving problems around scalability, reliability, security, and automation Working with modern API protocols including GraphQL and gRPC Enhancing the platform that connects both traditional and on‐chain financial services Must‐have experience: Strong backend engineering background with …/or Golang Solid understanding of microservices, event‐driven systems & distributed architecture Strong knowledge of PostgreSQL and/or Redis Understanding of web semantics, API design & backend web standards Proficiency with Git and version control workflows Experience with CI/CD, build automation and modern engineering pipelines Excellent ...

Software Developer

Hiring Organisation
Reed
Location
Wellington, Somerset, England, United Kingdom
Employment Type
Full-Time
Salary
£41,000 - £51,000 per annum, Inc benefits
Type: Full-time Salary: Up to £51,000 Join our clients innovative Research & Development team as a Full-Stack Developer, where you will design, build, and maintain applications using Angular on the frontend and .NET (C#) on the backend. This role involves close collaboration with the Product and Testing … C#), asynchronous programming, and dependency injection. Quality-focused with experience in unit testing (Jest/NUnit or similar) and code review. Knowledge of RESTful API design, OpenAPI/Swagger, and NoSQL databases. Excellent collaboration skills, with experience working closely with product teams, platform teams, developers, and testers. Strong ...

Senior Node/AWS Developer

Hiring Organisation
Method-Resourcing
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£80,000
impact The skills and experience my client are looking for: 5+ years of experience in software engineering, with expertise in Node.js and REST API design. Strong knowledge of AWS and serverless architecture. Strong experience with TypeScript, ensuring clean, efficient, and maintainable code. Experience with CI/CD pipelines using ...