51 to 75 of 93 OpenAPI Jobs in the UK

Senior Embedded Software Engineer

Hiring Organisation
KO2 Embedded Recruitment Solutions Ltd
Location
Cambridge, Cambridgeshire, Milton, United Kingdom
Employment Type
Permanent
Salary
£75000 - £85000/annum
maintaining board to board and digital interfaces: CAN, SPI, I2C, 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 ...

Principal Software Engineer - Lead Critical Systems & Cloud

Location
Greater London, England, United Kingdom
role requires hands-on experience with React/NextJS, TypeScript, Python and Java REST APIs, plus cloud, containers and CI/CD. Familiarity with OpenAPI, Docker, Kubernetes, Terraform and GitLab is highly valued. #J-18808-Ljbffr ...

Software Engineer

Location
Cheltenham, England, United Kingdom
with backend development languages such as Rust, Python, or Go Solid understanding of software development principles, including MVVM, UDF, web APIs, standards such as OpenAPI, and data structures Experience with Docker for containerisation and deployment Knowledge of DevOps processes, including CI/CD pipelines and automated testing frameworks Strong ...

Sr. Software Engineer

Location
Glasgow, Scotland, United Kingdom
tooling platforms Familiarity with how mobile and native teams consume shared UI artefacts, and the constraints that come with supporting multiple platforms JSON Schema, OpenAPI, or contract-first API design Contributions to open-source projects, design systems, or technical standards You may be assessed on the key critical skills ...

Android Developer (Contract)

Location
Cheltenham, England, United Kingdom
collaborative development. Familiarity with backend development languages such as Rust, or Go. Solid understanding of software development principles (MVVM, UDF), Web APIs, standards (e.g. OpenAPI), and data structures. Knowledge of DevOps processes, including CI/CD pipelines and automated testing frameworks. Strong communication and collaboration abilities within a team ...

Senior MuleSoft Developer: API & Cloud Integrations

Location
Greater London, England, United Kingdom
platform-based integrations across on-premises and cloud systems, shaping API design and deployment strategies. The role emphasizes REST API development with RAML/OpenAPI, DataWeave transformations, and CI/CD deployment. Strong communication and financial services experience are highly valued. #J-18808-Ljbffr ...

Senior Integrations Engineer - Ruby & API Expert

Location
Ruddington, England, United Kingdom
building and consuming REST APIs with JSON and XML, while enforcing strong security with OAuth and Basic Authentication. You will work with Swagger/OpenAPI to design and document APIs, tackle data mapping and connectivity issues, and drive clean code, automated testing, and scalable engineering standards in an Agile ...

Front End Engineer / React Developer

Hiring Organisation
Hays Technology
Location
Telford, Shropshire, United Kingdom
Employment Type
Contract
Contract Rate
£550/day £550 per day INSIDE
Component library and design system development using MUI, Storybook and Figma. Runtime validation and contract-first API integration using technologies such as Zod and OpenAPI-generated types. OAuth 2.0/OpenID Connect authentication, authorisation and secure session management. CI/CD, dependency management and frontend security practices. Experience within ...

Packet Core Test Engineer

Location
Slough, England, United Kingdom
automation.**Proficiency in networking protocols and procedures:*** Core Signalling Protocols: GTPv1/v2, NGAP, Diameter, PFCP, SBI (including HTTP/2, REST/JSON, OpenAPI)* Traffic and Transport: IP (IPv4/IPv6), UDP, TCP, SCTP, GRE* Quality of Service and Policy: 5G QoS Flow, QFI, PCC (Policy and Charging ...

Apigee Consultants (Contract)

Location
Greater London, England, United Kingdom
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 ...

Packet Core Test Engineer

Location
Reading, England, United Kingdom
.**Proficiency in networking protocols and procedures:*** Core Signalling Protocols: GTPv1/v2, NGAP, Diameter, PFCP, SBI (including HTTP/2, REST/JSON, OpenAPI)* Traffic and Transport: IP (IPv4/IPv6), UDP, TCP, SCTP, GRE* Quality of Service and Policy: 5G QoS Flow, QFI, PCC (Policy and Charging ...

User Experience Engineer (React / TypeScript)

Location
Greater London, England, United Kingdom
Experience with writing automated tests and testing frameworks like Vitest and Playwright. Experience consuming and helping shape REST API contracts, including working with an OpenAPI specification. Ability to implement beautiful styles using CSS. Real experience of AI-assisted development, and a clear view on where it helps and where ...

Java Developer

Location
Telford, England, United Kingdom
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 #J-18808-Ljbffr ...

Founding Software Engineer (Senior Software Engineer)

Location
Greater London, England, United Kingdom
shipping fast. Deep experience with AWS, Terraform, CI/CD, observability, and building scalable, reliable production systems. Desirable Harness engineering experience. Experience with OpenAPI, gRPC/Protocol Buffers. Previous early-stage startup experience. #J-18808-Ljbffr ...

DV Implementation Consultant

Location
Cheltenham, England, United Kingdom
synchronous and asynchronous architectures Proven experience in problem solving to a 2/3rd line level. Familiarity with API definitions such as Swagger/OpenAPI 3 Familiarity with shell scripting Solution or systems architecture experience Familiarity with AWS administration and Cloud Formation templates Technical authorship Data engineering experience, such ...

Senior Frontend Engineer, Observability

Location
United Kingdom
tests, reviewing changes, and writing documentation. Nice to Have Build type‐safe integration with backend services using generated API clients from Protocol Buffers and OpenAPI, shared schemas, and consistent error and auth handling. Micro‐Frontend Architecture with hands‐on experience implementing Module Federation (ideally Module Federation 2.0 with Vite ...

Full Stack Developer

Location
City of Westminster, England, United Kingdom
Role Overview We are seeking an experienced Full Stack Developer with strong expertise in Node.js , Next.js , Angular , and cloud-native microservices . The ideal candidate will have a proven track record in designing, developing, and ...

Automation Engineer

Hiring Organisation
Ixceed Solutions Ltd
Location
Telford, West Midlands, United Kingdom
Employment Type
Permanent Contract, Hybrid
Role: Automation Engineer Job Type: Full-Time/Permanent Location: Telford, UK – Hybrid (2 days onsite per week) Job Description: We are looking for an experienced Automation Engineer with strong hands-on automation testing experience ...

Staff Customer Engineer, Cloud AI, Retail

Hiring Organisation
Google
Location
London, England, United Kingdom
within the Consumer Products and Retail sector.Knowledge of observability constructs including distributed tracing, logging, and audit logging for AI applications.Understanding of integration patterns using OpenAPI and Model Context Protocol (MCP) to connect AI agents with business systems and API gateways.When leading companies choose Google Cloud, it's a huge ...

Software Engineer - C#

Location
Greater London, England, United Kingdom
This Role Solid proven experience with .NET and C#, particularly .NET6-10 Familiarity with API development, microservice patterns and practices, ideally including experience of OpenAPI standards Experience with both relational and non-relational databases such as Microsoft SQL Server, Azure Cosmos Knowledge of Microsoft Graph API and Microsoft ...

Founding Product Engineer

Location
Greater London, England, United Kingdom
screen, technical phone screen, and a paid on-site work trial. Target turnaround is under two weeks from first conversation. TypeScript, Node.js, React, Tailwind, OpenAPI, Express, Azure (Container Apps, Service Bus, Front Door, Entra ID), Postgres, Terraform, GitHub Actions, Docker. Anthropic-first AI with in-house evals and scaffolding. ...

Integration Architect

Hiring Organisation
Hackajob Ltd
Location
South West London, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
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 ...

Real-Time Banking Integration Architect (NATS/Kafka)

Location
Greater London, England, United Kingdom
system integrations in a large banking platform. You will lead end-to-end delivery, define target-state architecture, mentor teams and advocate API governance, OpenAPI/AsyncAPI, and AI-assisted development tools across AWS cloud-native stacks. #J-18808-Ljbffr ...

Oracle OCI API Gateway Architect

Location
United Kingdom
management. Proven experience in API performance tuning, throttling, rate limiting, and security implementation. Strong knowledge of OAuth 2.0, JWT, OCI IAM, REST APIs, and OpenAPI/Swagger. Experience with API monitoring, logging, troubleshooting, and distributed tracing. Experience integrating cloud and non-cloud applications using Oracle Integration Cloud (OIC), REST ...

AI Engineer

Location
Greater London, England, United Kingdom
internal business systems. Develop intelligent automation workflows using Power Platform, Power Automate and Dataverse. Integrate AI solutions with enterprise applications using REST APIs, OpenAPI, Microsoft Graph and Azure services. Establish best practices for prompt engineering, knowledge grounding, testing and agent lifecycle management. Implement appropriate security, governance, compliance and responsible ...