18 of 18 Contract OAuth2 Jobs in the UK

Senior Full Stack Engineer

Hiring Organisation
MarkIT Placements
Location
Didcot, Oxfordshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
From £500 to £700 per day
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 permissions. Design and maintain event-driven architectures and background processing pipelines (e.g. Celery, Redis Streams, Kafka) to enable ...

GIS Integration Architect

Hiring Organisation
Stackstudio Digital Ltd
Location
Reading, Berkshire, South East, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £500 to £550 per day
flows (feature services, map/geoprocessing services, geo-event streams, ETL pipelines) with robust retry, idempotency, and error handling Implement identity federation (SAML/OAuth2/OpenID Connect, SCIM), role-based access control, and service security Utility Network (Preferred) Guide ArcGIS Utility Network integration patterns: subnetwork updates, network topology validation ...

Senior Engineer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Spring Boot Experience building and supporting distributed systems React/Next.js AWS and/or Azure experience Experience Identity & Access Management standards (OAuth 2.0, OIDC, SAML) Microsoft Azure services (application deployment, integration, identity management) Observability and monitoring practices (Dynatrace experience advantageous) Key Responsibilities Contribute to delivery across Identity-focused ...

API Security Architect

Hiring Organisation
Hays Specialist Recruitment Limited
Location
Parkgate Industrial Estate, Knutsford, Cheshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
£700 - £750 per day
Proven experience in API security architecture within large-scale environments. Expertise in API gateways (Apigee, Azure API Management, Kong, Mulesoft). Strong knowledge of OAuth2.0, OIDC, JWT, mTLS, TLS, and Zero Trust principles. Deep understanding of OWASP API Security Top 10 and secure design patterns. Experience designing security controls ...

SharePoint Developer (SC Clearance Required)

Hiring Organisation
Cpl Life Sciences
Location
Stratford, London, England, United Kingdom
Employment Type
Contractor
Contract Rate
£350 - £450 per day
. Experience with Microsoft Graph APIs and SharePoint REST API. Familiarity with PnPjs, PnP PowerShell, CLI for Microsoft 365. Understanding of authentication models (OAuth 2.0, Azure AD app registrations). Exposure to services like Azure Functions, Web Jobs, Azure SQL Databases, Logic Apps, etc. Desired Skills Experience delivering digital ...

API Security Architect

Hiring Organisation
Eteam Workforce Limited
Location
Knutsford, Cheshire, North West, United Kingdom
Employment Type
Contract
Contract Rate
£740 per day
Proven experience in API security architecture within large-scale environments. Expertise in API gateways (Apigee, Azure API Management, Kong, Mulesoft). Strong knowledge of OAuth2.0, OIDC, JWT, mTLS, TLS, and Zero Trust principles. Deep understanding of OWASP API Security Top 10 and secure design patterns. Experience designing security controls ...

Azure Platform Engineer

Hiring Organisation
Hays
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600.0 - £690.0 per day + up to £690pd (Inside IR35)
Service Bus. Solid understanding of Azure networking, including VNets, private endpoints, Application Gateway, WAF, and load balancers. Strong knowledge of Azure AD, Managed Identities, OAuth2, and OpenID Connect. Proven experience with Docker and containerized workloads. Experience managing and supporting production-grade AKS clusters. Good working knowledge of Helm, Kustomize ...

Software Test Automation Engineer

Hiring Organisation
GlobalTech Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
Actions, Jenkins). Script creation, maintenance, and optimisation. API Testing Using tools like Postman, REST Assured, SoapUI. Validating response codes, payloads, headers, auth flows (OAuth2, tokens). Test Planning & Execution Test planning, strategic development & scope management Translating functional and non-functional requirements into comprehensive, structured test cases. Conducting manual testing ...

Software Test Automation Engineer

Hiring Organisation
GlobalTech Recruitment
Location
SW1A, Westminster Abbey, Greater London, United Kingdom
Employment Type
Contract, Temporary
Actions, Jenkins). Script creation, maintenance, and optimisation. API Testing Using tools like Postman, REST Assured, SoapUI. Validating response codes, payloads, headers, auth flows (OAuth2, tokens). Test Planning & Execution Test planning, strategic development & scope management Translating functional and non-functional requirements into comprehensive, structured test cases. Conducting manual testing ...

IAM Architect (SC Cleared)

Hiring Organisation
Tria Recruitment
Location
Oxfordshire, South East, United Kingdom
Employment Type
Contract
etc.) Integrate with Microsoft Entra ID Build JML processes & automated workflows Configure RBAC, access certifications & SoD controls Integrate HR/authoritative sources Configure SAML, OAuth2, OIDC, SCIM Troubleshoot provisioning & connector issues Must have: Strong IGA implementation experience Microsoft Entra ID integration experience Identity lifecycle & JML automation expertise Experience with ...

Data Engineer

Hiring Organisation
DCV Technologies Limited
Location
London, United Kingdom
Employment Type
Contract, Work From Home
services (MPGW, XML Firewall, WS-Proxy) Expose CICS, IMS, DB2 and MQ services via REST/JSON and SOAP APIs Implement API security including OAuth2, JWT, TLS/mTLS and AAA policies Deliver XSLT and GatewayScript transformations and schema validation Integrate with backend platforms including MQ, Kafka and relational databases ...

Senior Java Engineer - AWS, API - (2 days on site)

Hiring Organisation
Salt
Location
South East, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £700 per day
containerisation technologies (Docker) and orchestration platforms (ECS/EKS). Ensure code quality through unit, integration, and automated testing. Apply secure coding practices, including OAuth2/JWT authentication and general security best practices. Collaborate with cross-functional teams to deliver high-impact features and improvements. Participate in code reviews, architectural … container orchestration fundamentals (ECS, EKS). Experience with unit testing, integration testing, and automation frameworks. Understanding of security best practices, authentication/authorisation standards (OAuth2, JWT). Experience with SOAP/WSDL, JAXB, and legacy service integration. Experience with test automation and Cucumber. Preferred Attributes Strong proficiency in software engineering ...

Mainframe Modernization - IBM DataPower Engineer

Hiring Organisation
DCV Technologies
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£575 - £625/day - Inside IR35
applications with API platforms and cloud. Your responsibilities: Develop and configure DataPower services (MPGW, XML Firewall, WS-Proxy) for protocol mediation and security. Implement OAuth2, JWT, TLS/mTLS, and AAA policies for secure API access. Integrate with CICS, IBM MQ, and DB2 for backend connectivity. Connect to database like ...

Contract) Boomi Integration Engineer

Hiring Organisation
Lynko
Location
Manchester, United Kingdom
Employment Type
Contract
based integrations). Design integrations end-to-end: requirements → mapping → error handling → deployment → monitoring. Develop and publish APIs (REST/SOAP) with appropriate security (OAuth2, basic auth, certificates, IP restrictions). Implement data transformations (JSON/XML/CSV), mapping, validation, enrichment, and canonical models. Set up and manage Boomi ...

Front-End Engineer React / TypeScript

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£0 per annum
hydration, SSR/ISR (Next.js). Responsibilities Deliver modular, well-tested SPA components/pages. Integrate with backend APIs (REST/GraphQL), auth flows (OAuth2/OIDC). Collaborate with designers and back-end/AI teams on end-to-end features. Ensure accessibility, performance budgets, and observability (e.g. ...

.Net Developer

Hiring Organisation
DABSTER SYSTEMS UK LIMITED
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
best practices Work with Azure services such as AKS, Azure Functions, App Services, Service Bus, and Event Hub Implement secure authentication and authorization using OAuth2 and SAML Contribute to CI/CD, release processes , and application observability Refactor, debug, test, deploy, and support applications in production Collaborate effectively … design patterns and SOLID principles Good to Have Azure: AKS, Azure Functions, App Services, Service Bus, Event Hub Dapr (Distributed Application Runtime) Authentication & Security: OAuth2, SAML Experience with enterprise frameworks and large-scale systems What We’re Looking For Proven experience working on .NET projects in Agile/Scrum teams ...

Azure Platform Engineer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£600 - £690 per day
scalable networking patterns using VNets, private endpoints, Application Gateway, WAF, and load balancers. Managing identity and access across platforms with Azure AD, Managed Identities, OAuth2, and OpenID Connect. Creating and maintaining containerized microservices using Docker, Helm, Kustomize, or similar tools. Implementing and optimising observability stacks with Prometheus, Grafana, OpenTelemetry … networking and security best practices. Familiarity with service mesh technologies (e.g., Istio, Linkerd, Open Service Mesh). Strong grasp of authentication and authorization standards (OAuth2, OIDC). Experience implementing robust monitoring, logging, and tracing across distributed systems. Ability to work closely with mobile engineering teams and translate app requirements into ...

Full Stack Engineer - Healthcare - Python, React, Fast API

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £500 per day
extend FastAPI services, design clean REST APIs, and work with PostgreSQL and SQLAlchemy to manage structured data. You will also contribute to implementing OAuth2 authentication across the stack to enable secure handling of sensitive patient information. The role also involves integrating existing LLM functionality into the product to support conversational … designing and building REST APIs Experience working from Figma designs and collaborating closely with product and design teams Experience implementing authentication flows such as OAuth2 Comfortable working in a fast-paced, small team environment with ownership of features end to end Nice to haves Experience with SQLAlchemy and PostgreSQL Exposure ...