24 of 24 OpenAPI Jobs in England

Senior Java Developer

Hiring Organisation
Intelligent Steps
Location
London, United Kingdom
Employment Type
Permanent
Salary
£85000 - £95000/annum 10% Bonus
operating microservices, with an understanding of service boundaries, timeouts, retries, circuit breakers and eventual consistency. APIs and security : Experience designing REST APIs with OpenAPI documentation, OAuth 2.0 or OpenID Connect, and token-based access control. Messaging : Practical experience with Apache Kafka or a comparable messaging platform, including consumer groups ...

Lead Software Engineer (Node)

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £525 per day + Inside IR-35
/CD best practices Support deployment, containerisation, and platform optimisation activities Essential Skills & Experience Strong commercial experience with Node.js API development using REST and OpenAPI Web application development using HAPI Database expertise across PostgreSQL , MongoDB , and Redis Unit testing with Jest and Lab Source control using Git Cloud platform ...

Senior C# .Net Developer

Hiring Organisation
ARM
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500/day Umbrella Inside IR35
/.NET 8 | ASP.NET Core | REST APIs | SQL Server | Entity Framework | Azure | Azure DevOps | Git | Docker | Kubernetes | Kafka | Redis | JSON/XML | Swagger/OpenAPI Disclaimer: This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource Managers Engineering Limited ...

Senior Technical Architect - Custody & Securities Services

Hiring Organisation
Adecco
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£750 - £850/day
Domain-driven designs Distributed platforms Experience with Kafka, IBM MQ, Solace or similar messaging technologies. Strong API and integration architecture experience, including REST and OpenAPI standards. Exposure to AWS and modern cloud-native architectures. Experience within architecture governance frameworks and technical review boards. Desirable Experience Knowledge of SWIFT Messaging ...

Senior AI & Integration Engineer – C# / .NET / Azure

Hiring Organisation
Adria Solutions Ltd
Location
Manchester, United Kingdom
Employment Type
Permanent
Salary
£70000 - £75000/annum
include: Strong C# and modern .NET development, including ASP.NET Core Web APIs and backend services. Azure development, including Azure Functions. REST APIs, HTTP, JSON, OpenAPI/Swagger and webhooks. Integration patterns covering authentication, pagination, rate limits, retries and exception handling. Microsoft Entra ID, OAuth 2.0, application permissions and secure ...

Senior Solutions Engineer

Location
Westminster, West End, United Kingdom
architecture (EDA), and microservices architecture. Familiarity with Java (Spring), Kubernetes, AWS, and service mesh architectures and technologies such as RESTful APIs, API design, Swagger, OpenAPI, and OAuth2. Familiarity and working experience with relational databases (e.g.MySQL, PostgreSQL) and non-relational databases (e.g., MongoDB, Cassandra). 6+ years in customer-facing ...

Senior Software Engineer

Hiring Organisation
ARC IT Recruitment
Location
Brighton, Sussex, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 Annual
query tuning, indexing and execution plans High-traffic E-commerce or transactional systems Cloud experience, ideally AWS Strong RESTful API design: versioning, idempotency, caching, OpenAPI/Swagger Production ownership: monitoring and profiling .NET apps (eg Datadog, New Relic, CloudWatch) Daily use of AI coding tools (Claude Code, Copilot, Cursor ...

Principal Software Engineer

Hiring Organisation
Hackajob Ltd
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
technical direction within your team Required experience Core Software Engineering such as: JavaScript frameworks (React, NextJS), TypeScript, Python or Java REST API development/OpenAPI/Swagger Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch ...

Quality Engineer

Hiring Organisation
Sanderson Government and Defence
Location
Telford, Shropshire, West Midlands, United Kingdom
Employment Type
Contract
communication skills Agile Scrum experience Quality-driven mindset Desirable Skills Playwright, JUnit, Selenium, Cucumber/Gherkin, OWASP ZAP, SonarQube, Kubernetes, Docker, AWS, Microservices, OpenAPI, WCAG and DevSecOps practices. What We're Looking For A proactive Quality Engineer who thrives in Defence environments, enjoys solving complex technical challenges ...

Senior Solutions Engineer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
driven architecture (EDA), and microservices architecture. Familiarity withJava (Spring), Kubernetes, AWS, and service mesh architectures and technologies such as RESTful APIs, API design, Swagger, OpenAPI, and OAuth2. Familiarity and working experience with relational databases (e.g.MySQL, PostgreSQL) and non-relational databases (e.g., MongoDB, Cassandra). 6+ years in customer-facing ...

Full Stack Software Developer

Hiring Organisation
Data Careers
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
highly regulated environments Additional Experience of Interest Experience with any of the following would be beneficial: Terraform AWS CloudFormation Docker Gatsby REST APIs/OpenAPI GitLab Infrastructure as Code DevOps-focused development practices Scaling and improving existing software products Defence, national security or central government environments Working within blended ...

Full Stack Software Developer

Hiring Organisation
Data Careers
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
highly regulated environments Additional Experience of Interest Experience with any of the following would be beneficial: Terraform AWS CloudFormation Docker Gatsby REST APIs/OpenAPI GitLab Infrastructure as Code DevOps-focused development practices Scaling and improving existing software products Defence, national security or central government environments Working within blended ...

Apigee Engineer: Apigee, GCP, Google Cloud, API

Hiring Organisation
Curo Services
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 349 Daily
proxies, shared flows, policies, API products, applications, KVMs, target Servers, environments and deployment models. Hands-on experience designing and securing REST APIs using OpenAPI, OAuth 2.0, OIDC, JWT, mTLS and certificate-management patterns. Experience with commonly used Apigee policies, including OAuthV2, VerifyAPIKey, AssignMessage, RaiseFault, ServiceCallout, SpikeArrest, Quota and threat ...

IT Specialist, Cloud and Automation.

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
proxies, shared flows, policies, API products, applications, KVMs, target servers, environments and deployment models. Hands-on experience designing and securing REST APIs using OpenAPI, OAuth 2.0, OIDC, JWT, mTLS and certificate-management patterns. Experience with commonly used Apigee policies, including OAuthV2, VerifyAPIKey, AssignMessage, RaiseFault, ServiceCallout, SpikeArrest, Quota and threat ...

Fullstack Engineer

Hiring Organisation
Oscar Associates (UK) Limited
Location
London, United Kingdom
Employment Type
Permanent
interfaces in TypeScript and React, respecting a detailed role-based access model Design services and REST APIs in Python (FastAPI/Django) with clear OpenAPI contracts Model data in PostgreSQL: schema design, migrations, indexing and multi-tenant isolation Build event-driven and background processing, plus real-time features over ...

Apigee Consultants: Apigee, GCP, API, Google Cloud

Hiring Organisation
Curo Services
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 349 - 585 Daily
proxies, shared flows, policies, API products, applications, KVMs, target Servers, environments, and deployment models. Hands-on experience designing and securing REST APIs using OpenAPI, OAuth 2.0, OIDC, JWT, mTLS and certificate-management patterns. Experience with commonly used Apigee policies, including OAuthV2, VerifyAPIKey, AssignMessage, RaiseFault, ServiceCallout, SpikeArrest, Quota and threat ...

Senior Embedded Software Engineer

Hiring Organisation
KO2 Embedded Recruitment Solutions LTD
Location
Cambridge, Cambridgeshire, East Anglia, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
maintaining board to board and digital interfaces: CAN, SPI, IC, UART and RS422 Building networked services and interfaces including REST APIs, SNMP agents and OpenAPI specifications Developing and debugging TCP and UDP communication layers, and getting into the weeds on protocol performance Secure communications: authentication, encryption, secure firmware update ...

Java Developer

Hiring Organisation
Experis
Location
Telford, Shropshire, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £630/day
Developers and QEs to modernise HMRC legacy services. Required Skills : Java Spring Boot Junit Optional Skills: JPA Kibana Maven Mockito AWS GitLab Helm OpenAPI SQL Shell Scripting If you receive suspicious outreach claiming to be from us, please contact us via the ManpowerGroup website. ...

Java Engineer

Hiring Organisation
Henderson Scott
Location
Telford, Shropshire, West Midlands, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £580 per day + Umbrella - inside IR35
work effectively in a Scrum or agile team environment. Experience with any of the following is beneficial: JPA, Kibana, Maven, Mockito, AWS, GitLab, Helm, OpenAPI, SQL, or Shell Scripting. Interested? Apply now for immediate consideration ...

Solutions Engineering Lead

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
technical delivery team. Experience building and designing scalable and performing systems within a microservice architecture Expert on all things API, such as RESTful design, OpenAPI, OAuth2, versioning, etc. Have a strong product mindset and be able to support others to make the right decisions and compromises. Comfortable working ...

Integration Architect

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent, Work From Home
interface/API specifications . Design and govern enterprise APIs using Azure API Management (APIM) . Define API design and governance standards, including OpenAPI/Swagger, versioning, schema management and API lifecycle management . Design APIM Products, subscriptions, throttling and consumption models for internal and external consumers. Establish reusable … Azure Service Bus | Event Grid | Logic Apps | Azure Functions | OAuth2 | OIDC | JWT | Entra ID | Key Vault | Terraform | Bicep | Azure DevOps | CI/CD | APIOps | OpenAPI/Swagger | Azure Monitor | Application Insights Additional Information Why our client? We believe in providing our employees with a comprehensive benefits package that prioritises ...

Software Engineer Consultant

Hiring Organisation
Eden James Consulting Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
We are recruiting for a Software Engineer Consultant on behalf of one of the UK's fastest-growing technology consultancies, ranked in the Financial Times FT1000 Europe's Fastest-Growing Companies list in both 2025 ...

Lead Software Engineer

Hiring Organisation
Hackajob Ltd
Location
Bristol, Avon, South West, United Kingdom
Employment Type
Permanent, Part Time, Work From Home
Salary
£90,000
Our client is a public sector technology consultancy. About our client Our aim at our client is to use human-centred technology to improve our society. We believe putting people at the heart of designing ...

Technical Business Analyst

Hiring Organisation
Deerfoot Recruitment Solutions Limited
Location
Hounslow, London, Stanwell Moor, Surrey, United Kingdom
Employment Type
Contract
Contract Rate
£350 - £420/day Hybrid Working
airline customers, with a real say in how a complex set of connected products behaves. The role is properly technical: you'll read OpenAPI specifications, query databases and contribute to solution design, using Jira, Confluence and GitHub. It's a 12 month contract, hybrid with half your time … stories, business rules, process flows, acceptance criteria and functional specifications Analysing APIs, integrations, data flows and system interactions across interconnected products, reading Swagger and OpenAPI specifications Writing and running database queries to investigate data, validate behaviour and support analysis Contributing to solution design alongside Architects and Engineers Validating requirements ...