25 of 25 Permanent OpenAPI Jobs in England

Senior Backend Java Engineer

Hiring Organisation
Sanderson
Location
London, UK
Employment Type
Full-time
Azure DevOps) Comfortable working in agile, cross-functional teams Has current SC clearance, or is willing and eligible to undergo SC clearance Desirable OpenAPI/Swagger Liquibase or Flyway Gradle Kafka Observability/monitoring experience Exposure to Kubernetes Some awareness of React/TypeScript What we need from candidates ...

Java Software Engineer

Hiring Organisation
Tenth Revolution Group
Location
Newcastle Upon Tyne, England, United Kingdom
both technical and non‐technical stakeholders ⭐ Nice to have Kafka, SQS, Serverless (Lambda) Monitoring & logging tools (ELK, Dynatrace, Splunk) JPA/Hibernate, Swagger/OpenAPI, automated testing tools Experience delivering projects from backlog through to production 🌍 Why Us? Work on high‐impact transformation programmes Continuous learning, certifications and career ...

Full Stack Developer

Hiring Organisation
Aimtech Recruitment Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
Power Platform (Power Apps, Power Automate, Power Pages, Power BI) Python, JavaScript, TypeScript, Angular or React ASP.NET Core, Entity Framework, REST APIs, Swagger/OpenAPI SQL Server, PostgreSQL, NoSQL databases, vector databases FastAPI and AI service integrations (OpenAI, Claude, Gemini) Docker, Kubernetes (AKS), Azure App Services Azure DevOps, Azure ...

Senior Java Developer

Hiring Organisation
Hays
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£65,000
Kafka, SQS) Serverless technologies (e.g., AWS Lambda) Monitoring/logging tools (ELK, Splunk, Dynatrace) ORM technologies (JPA, Hibernate) API documentation tools (e.g., Swagger/OpenAPI) Test tools (Postman, Selenium, Axe) Exposure to AI-assisted development tools (e.g., GitHub Copilot) In return, you will be rewarded with a market leading ...

Backend Software Engineer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, UK
Employment Type
Full-time
have: Active Security Clearance (SC) Experience in coding-intensive environments (fintech, payments, digital banking, capital markets/trading) API specification using Swagger/OpenAPI Gradle build systems Liquibase (or similar) for database migrations/versioning Kafka or other event-streaming platforms React and TypeScript If you're interested ...

Solutions Architect

Hiring Organisation
XCEEDANCE LIMITED
Location
City of London, London, United Kingdom
strategies. Experience with Unit Testing tools such as Junit 5. Experience in using coding assistant tools, Gen AI and agentic AI skills Experience with OpenAPI Specification (OAS). Exposure to authentication frameworks like OIDC (Open Id Connect) and Authorisation frameworks OAuth2. Experience using Agile development methodologies. Desirable Skills Understanding ...

Senior Java Software Engineer

Hiring Organisation
Tenth Revolution Group
Location
Newcastle Upon Tyne, England, United Kingdom
innovation and delivering high‐quality solutions Nice to have Kafka, SQS, Serverless (Lambda) Monitoring & logging tools (ELK, Dynatrace, Splunk) JPA/Hibernate, Swagger/OpenAPI, automated testing Mentoring experience 🔐 Security: Willingness to obtain UK SC clearance if required If you’re passionate about modern engineering and want to make ...

Java Software Engineer

Hiring Organisation
Sanderson
Location
London, UK
Employment Type
Full-time
containerisation CI/CD pipelines (Jenkins or similar) Working in agile, multi-disciplinary teams Desirable experience Kafka Liquibase or similar migration tooling Swagger/OpenAPI Gradle React TypeScript Reasonable Adjustments: Respect and equality are core values to us. We are proud of the diverse and inclusive community we have ...

C# Senior Software Developer

Hiring Organisation
Adria Solutions
Location
Preston, Lancashire, North West, United Kingdom
Employment Type
Permanent
Salary
£75,000
Framework Core (DbContext, LINQ, Migrations) Debug and trace request flows from UI Controller API Database Response Maintain and publish API documentation via Swagger/OpenAPI Ensure API security, reliability, and performance (error handling, retry logic, logging, timeouts, CORS) Collaborate with database, infrastructure, and QA teams for portal ...

Manchester or Leeds hybrid - Senior/Lead Java Consultant or Fullstack

Hiring Organisation
Tenth Revolution Group
Location
Manchester Area, United Kingdom
Leeds Nice to have Message queueing systems (Kafka, SQS) Serverless technologies (e.g., AWS Lambda) Monitoring tools (Dynatrace, ELK, Splunk) JPA/Hibernate Swagger/OpenAPI Testing tools (Selenium, Postman, etc.) Experience delivering end-to-end projects Benefits Annual bonus: approx. 5% Work from abroad: up to 4 weeks ...

Full Stack Software Engineer

Hiring Organisation
83zero Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
track record of building solutions end-to-end Experience deploying applications in cloud environments, preferably Microsoft Azure Strong experience in REST API design and OpenAPI standards Extensive experience working with databases, data platforms, and analytical tools Ability to research, propose, and implement solutions with minimal supervision Experience building internal ...

Full Stack Software Engineer

Hiring Organisation
83zero Ltd
Location
London, Lime Street, United Kingdom
Employment Type
Permanent
Salary
£100000 - £130000/annum
track record of building solutions end-to-end Experience deploying applications in cloud environments, preferably Microsoft Azure Strong experience in REST API design and OpenAPI standards Extensive experience working with databases, data platforms, and analytical tools Ability to research, propose, and implement solutions with minimal supervision Experience building internal ...

Software Engineer

Hiring Organisation
17918
Location
Bristol, Gloucestershire, United Kingdom
/SNS. Knowledge of both NoSQL (preferably DynamoDB) and SQL databases for high-performance storage. Understanding of API Gateway management and maintaining clear OpenAPI specifications. Strong problem-solving and debugging skills within complex, distributed environments. Excellent communication skills and a preference for working in collaborative, Agile team structures. ...

Senior Full Stack Developer

Hiring Organisation
Charles Jenson Recruitment Ltd
Location
Brighton, East Sussex, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £70,000 per annum
know when to use a relational schema and when to lean on NoSQL for speed and flexibility. Collaborator: You can design clean, documented APIs (OpenAPI/Swagger) that make life easy for your front-end partner. Agile Mindset: You enjoy a fast-paced environment where you can influence ...

Senior .NET Developer

Hiring Organisation
Charles Jenson Recruitment Ltd
Location
Brighton, East Sussex, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £70,000 per annum
know when to use a relational schema and when to lean on NoSQL for speed and flexibility. Collaborator: You can design clean, documented APIs (OpenAPI/Swagger) that make life easy for your front-end partner. Agile Mindset: You enjoy a fast-paced environment where you can influence ...

AWS Solution Architect - Integration Specialist

Hiring Organisation
Anson Mccade
Location
East London, London, United Kingdom
Employment Type
Permanent
Salary
£75,000
They're Looking For Essential: Strong experience designing and delivering AWS-based integration solutions Expertise in API design and security (API Gateway, OAuth2, JWT, OpenAPI) Experience with event-driven architectures (SQS, SNS, Step Functions) Strong understanding of cloud-native development frameworks (e.g. Flask, FastAPI) Experience with Kubernetes ...

Junior Full Stack Developer - Frontend focused

Hiring Organisation
Wanda Health
Location
City Of Bristol, England, United Kingdom
user flows and acceptance criteria into working application features Implement screens, forms, validation behaviours, state handling and API integrations Work with backend APIs using OpenAPI/Swagger documentation Write frontend tests, component tests and integration checks where appropriate Support light backend/API work where useful and under guidance ...

Senior Software Developer C and Linux

Hiring Organisation
System Recruitment
Location
Lymington, Hampshire, United Kingdom
Employment Type
Permanent
Salary
£250 - £350/day
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 low-level environments, without reliance on full-stack frameworks Designing for defensive input ...

Lead Mulesoft Developer

Hiring Organisation
Hydrogen Group
Location
England, United Kingdom
Employment Type
Permanent
Salary
GBP 60,000 - 70,000 Annual
with MuleSoft Anypoint Platform and Mule 4 Expertise in DataWeave 2.0 Experience with API-led connectivity and building APIs using RAML and/or OpenAPI Background in enterprise integration projects (multi-system environments) Experience with integration patterns (event-driven, batch, streaming, orchestration) Knowledge of CloudHub (v2.0 preferred) and/ ...

AWS Solution Architect - Associate Manager

Hiring Organisation
Anson Mccade
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
Hands-on experience as an AWS Solution Architect (Integration Specialist) with Lambda and Kubernetes (EKS) Strong knowledge of API design and security (API Gateway, OpenAPI, OAuth2, JWT) Experience with cloud-native frameworks such as Flask or FastAPI Solid understanding of Kubernetes security, IAM, encryption, and CI/CD tooling ...

Principal Solutions Consultant

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
technical foundation, including: Knowledge of blockchain data structures, networking principles, Layer 1/Layer 2, and interoperability protocols. Experience designing and integrating RESTful APIs, OpenAPI specifications, and cloud‐based architectures. Familiarity with IT and security protocols (TLS/SSL) and experience with data compliance, governance, and auditability. Proficiency ...

Full Stack Engineer (C# Backend / React .NET Front End)

Hiring Organisation
Lorien
Location
London, UK
Employment Type
Full-time
integration, and UI testing Manage deployments across staging and production environments Collaboration & Ownership Contribute to architectural decisions and code reviews Document APIs (Swagger/OpenAPI), deployments, and runbooks Mentor junior engineers and promote engineering best practices What We're Looking For Strong experience in C#/.NET and React ...

Principal Architect - Intelligent Automation

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
reference architectures for Agentic AI solutions, leveraging Azure AI Foundry as the pro-code platform - including multi-agent orchestration, tool integration (MCP, A2A, OpenAPI), agent memory, and enterprise knowledge grounding (RAG)* Assess opportunities for Intelligent Automation based on technical feasibility and business value, to enable prioritisation of the backlog ...

Senior Backend Engineer

Hiring Organisation
MarkIT Placements
Location
West London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
Focus) Design and evolve scalable backend services in Python using FastAPI for high-availability, high-throughput workloads. Build well-versioned RESTful APIs aligned to OpenAPI/Swagger, with strong conventions for consistency, idempotency, and backward compatibility. Implement authentication and authorization using OAuth2/OIDC, session management, and fine-grained … Palantir Foundry, including working with Foundry APIs, data pipelines, ontologies, or Foundry-based application development. Proven experience designing and operating production REST APIs with OpenAPI/Swagger. Deep understanding of relational database design, indexing, performance tuning, and migrations (PostgreSQL). Proficiency with containerisation (Docker) and Git-based workflows. Experience ...

Software Engineer - Java /Back End

Hiring Organisation
Som3
Location
Basingstoke, Hampshire, United Kingdom
Employment Type
Permanent
Salary
£50000 - £65000/annum
management (Flyway/Liquibase), indexing strategy, and query optimisation. Design, document, and maintain RESTful and/or GraphQL APIs, ensuring consistency, versioning, and thorough OpenAPI/Swagger documentation. Identify, catalogue, and systematically address technical debt in collaboration with the wider Your background and experience will include Great communication skills … design. PostgreSQL skills: schema design, complex query writing, index optimisation, and migration tooling (Flyway or Liquibase). Experience designing and documenting APIs using OpenAPI/Swagger Proficiency with build tools - Maven or Gradle - and a modern Java development workflow. Understanding of software design principles (SOLID, DRY, Clean Architecture) Familiarity ...