of RESTful API design, including best practices for resource modelling, pagination, and error handling. Proven experience with API versioning strategies, backward compatibility, and lifecycle management. Familiarity with OpenAPI/Swagger specifications and API documentation tooling. Solid understanding of API security, including OAuth2, API keys, scopes, JWT, and rate limiting. Strong testing experience, including contract testing, unit, integration, and end More ❯
Leeds, West Yorkshire, Yorkshire, United Kingdom Hybrid / WFH Options
IO Associates
performance, and delivery. What You'll Be Working With: Azure services such as Functions, Event Grid, Service Bus, SQL, Blob Storage, and DevOps pipelines API design, documentation (OpenAPI/Swagger), and integration with external partners Hands-on coding in C# .NET or Python (with opportunities to explore Node.js/Java) Building and optimising data pipelines and cloud applications CI More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Interquest
testing across distributed systems and cloud platforms. Strong hands-on knowledge of Azure integration services (Logic Apps, Azure Functions, Service Bus, API Management). Experience with REST API testing, Swagger/OpenAPI validation, and API test automation. Solid background in non-functional testing, including performance, security, and resilience testing. Capability in DevOps testing, with the ability to embed test More ❯
across distributed systems and cloud platforms. Hands-on knowledge of Azure integration services such as Logic Apps, Azure Functions, Service Bus, and API Management. Experience with REST API testing, Swagger/OpenAPI validation, and API test automation. Background in non-functional testing, including performance, security, and resilience testing. Ability to embed test automation into CI/CD pipelines using More ❯
monitoring and observability tools like Azure Monitor, Application Insights, and Log Analytics. Awareness of data security, GDPR, and compliance in educational or public sector environments. Exposure to OpenAPI/Swagger, API lifecycle management, and version control best practices. Previous experience working with third-party suppliers in multi-vendor delivery environments. 12-month contract-to start ASAP- Hybrid working More ❯
Overview Currencycloud was acquired by Visa in December 2021. Our Senior Software Engineers are responsible for implementing an industry-leading API that has already processed over 50 billion USD of cross-border transactions for over 5 million end users, and More ❯
Maidenhead, Berkshire, South East, United Kingdom Hybrid / WFH Options
Oscar Associates (UK) Limited
English (spoken and written) as this role is working with colleagues and clients to understand requirements, explain solutions and document clearly. Desired: Experience integrating with financial or ERP systems Swagger/OpenAPI documentation for Open APIs Familiarity with Azure services and automation tools like Power Automate or Zapier Exposure to IoT or Telematics platforms Awareness of ISO 27001, SOC More ❯
Banbury, Oxfordshire, South East, United Kingdom Hybrid / WFH Options
Oscar Associates (UK) Limited
Core Experienced with ASP.NET Core MVC and Web API Experienced with Entity Framework Core and LINQ Proven experience designing and implementing RESTful APIs Understanding of API versioning documentation (e.g. Swagger) Proficient in SQL Solid understanding od Data Modelling and Database architecture Benefits: Competitive base salary Hybrid working Private healthcare 33 days holiday 37.5-hour work weeks This is a More ❯
Nottingham, Nottinghamshire, England, United Kingdom Hybrid / WFH Options
Oscar Technology
years' experience in Automation Testing within a software focused and agile environment Further experience in Manual Testing C#/Selenium/Specflow UI RestSharp JIRA/Confluence Desirables: Swagger, DynamoDB, AWS Visual Studio and C# The Company This company continue to grow from strength to strength, working with clients all over the globe, offering a range of cloud-based More ❯
Oxford, Oxfordshire, England, United Kingdom Hybrid / WFH Options
Opus Recruitment Solutions Ltd
Lead Java Developer | Oxford - £120kJava, Springboot, Rest APIs, Microservices, TDD, DevOps, CI/CDA global leader in scientific publishing and data is hiring a Lead Java Engineer to lead the design and implementation of cloud-native & event-driven systems.With nearly More ❯
Job Title: Lead AI Developer Base Location: London plus network of 20 offices nationally: www.kpmg88careers.co.uk/experienced-professional/#LeBlender.OfficeLocations The KPMG Audit Technology team is dedicated to building cutting-edge solutions in close collaboration with the Audit function. We More ❯
City of London, London, United Kingdom Hybrid / WFH Options
KPMG UK
Job Title: Lead AI Developer Base Location: London plus network of 20 offices nationally: www.kpmg88careers.co.uk/experienced-professional/#LeBlender.OfficeLocations The KPMG Audit Technology team is dedicated to building cutting-edge solutions in close collaboration with the Audit function. We More ❯
london, south east england, united kingdom Hybrid / WFH Options
KPMG UK
Job Title: Lead AI Developer Base Location: London plus network of 20 offices nationally: www.kpmg88careers.co.uk/experienced-professional/#LeBlender.OfficeLocations The KPMG Audit Technology team is dedicated to building cutting-edge solutions in close collaboration with the Audit function. We More ❯
slough, south east england, united kingdom Hybrid / WFH Options
KPMG UK
Job Title: Lead AI Developer Base Location: London plus network of 20 offices nationally: www.kpmg88careers.co.uk/experienced-professional/#LeBlender.OfficeLocations The KPMG Audit Technology team is dedicated to building cutting-edge solutions in close collaboration with the Audit function. We More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
KPMG UK
Job Title: Lead AI Developer Base Location: London plus network of 20 offices nationally: www.kpmg88careers.co.uk/experienced-professional/#LeBlender.OfficeLocations The KPMG Audit Technology team is dedicated to building cutting-edge solutions in close collaboration with the Audit function. We More ❯
As a Senior Software Engineer at Performativ, you'll lead the design and implementation of robust, high-throughput APIs and backend systems. Everything we build is grounded in open web standards -HTTP, JSON, webhooks, OpenAPI -and built for scale, reliability More ❯
Several mid-senior job positions are now open for PHP developers in London ideally with experience working with APIs. We are looking for motivated developers with confidence in the design, development, testing and management of APIs within both server based More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Harrington Boyd
and configure adapters such as JDBC, SAP, MQ, and Flat File for integration with external systems and databases. Create and consume RESTful and SOAP-based web services, including WSDL, Swagger/OpenAPI specifications, and API Gateway configurations. Develop error handling and logging frameworks to support robust system operations. Skills and Experience Proficiency with the webMethods Integration Suite, covering both … Hands-on expertise with webMethods adapters (JDBC, SAP, MQ, Flat File). Skilled in API Management and Web Services, with experience creating and consuming REST and SOAP services, WSDL, Swagger/OpenAPI, and API Gateway. Security Clearance This role requires Security Check (SC) clearance. Applicants must have resided continuously in the UK for the last 5 years and meet More ❯
Hounslow, London, United Kingdom Hybrid / WFH Options
Abel & Cole
friendliness, supportiveness and humour with outstanding levels of achievement at work. Responsibilities Actively participate in the Scrum process; contribute to sprint planning, reviews, and retrospectives. Analyse API requirements and Swagger definitions to design and implement test cases. Develop, maintain and execute automated tests for RESTful .NET APIs. Develop and maintain automated UI tests (Playwright, Selenium, Appium). Extend and … and strategy. Experience and Skills Proven experience in API test automation. Strong hands-on experience automating tests for RESTful APIs using C#. Experience working with API tools such as Swagger, Postman, RestSharp, or similar. Understanding of HTTP methods, status codes, request/response formats, and API authentication (e.g. Bearer tokens, OAuth2). Experience working with JSON and XML formats. More ❯
Configure adapters such as JDBC, SAP, MQ, and Flat File to enable integration with external systems and databases. Create and consume RESTful and SOAP-based web services, including WSDL, Swagger/OpenAPI specifications, and API Gateway configurations. Develop error handling and logging frameworks to support robust system operations. Skills and Experience Strong knowledge of the webMethods Integration Suite, both … Flow Services and custom Java Services. Practical experience with adapters such as JDBC, SAP, MQ, and Flat File. Skilled in API management and web services, including REST, SOAP, WSDL, Swagger/OpenAPI, and API Gateway. Security Clearance This role requires Security Check (SC) clearance. To be eligible, applicants must have resided continuously in the UK for the last More ❯
Manchester, Lancashire, England, United Kingdom Hybrid / WFH Options
Harrington Boyd
Configure adapters such as JDBC, SAP, MQ, and Flat File to enable integration with external systems and databases. Create and consume RESTful and SOAP-based web services, including WSDL, Swagger/OpenAPI specifications, and API Gateway configurations. Develop error handling and logging frameworks to support robust system operations. Skills and Experience Strong knowledge of the webMethods Integration Suite, both … Flow Services and custom Java Services. Practical experience with adapters such as JDBC, SAP, MQ, and Flat File. Skilled in API management and web services, including REST, SOAP, WSDL, Swagger/OpenAPI, and API Gateway. Security Clearance This role requires Security Check (SC) clearance. To be eligible, applicants must have resided continuously in the UK for the last More ❯
the liaison between business stakeholders and technical teams to gather and document functional and non-functional requirements. Translate business needs into detailed specifications, data models, and interface definitions (e.g., Swagger/JSON APIs). Analyze large sets of banking data for insights and trends, supporting data-driven decision-making. Write complex SQL queries for data extraction, transformation, and analysis. … retail, corporate, payments, lending, treasury, or risk. Technical expertise in: SQL, data analysis, and data visualization tools (Power BI/Tableau/Qlik) APIs (knowledge of JSON, RESTful services, Swagger/OpenAPI specs) Excel, ETL tools, and basic scripting (Python is a plus) Experience working in Agile/Scrum environments. Strong documentation and communication skills. Ability to collaborate with More ❯
Primary Function of the Position Reporting to the Network Development Lead, the Senior Software Engineer is responsible for the development, deployment of Network applications for the portfolio including: • Preparing deployment design using gitops approach or pipelines for different projects. • Deployment More ❯