15 of 15 Contract OAuth2 Jobs in London

Java Modernization Technical Architect - SC Clearance

Hiring Organisation
Randstad Technologies Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £500/day Inside IR35 via Umbrella
Azure Container Apps (ACA), ARO, Azure Storage, Azure SQL, and Azure Key Vault. Modernization & Security: Track record in legacy-to-cloud application migration, OAuth2, JWT, REST API architecture, performance tuning, and security hardening. Containerization: Hands-on experience with Docker and Kubernetes for container orchestration. Front-End Fundamentals: Exposure to client ...

Full Stack Developer

Hiring Organisation
MJA (London) Ltd
Location
City, London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
CloudFormation AWS Lambda, API Gateway, SQS, SNS and EventBridge Redis and distributed caching CloudWatch, ELK/OpenSearch, Datadog, Prometheus, Grafana or Splunk OAuth 2.0/JWT and API security AWS certification Experience supporting high-volume, production-grade distributed systems ...

Full Stack Developer

Hiring Organisation
MJA (London) Ltd
Location
EC3, Broad Street, Greater London, United Kingdom
Employment Type
Contract
CloudFormation AWS Lambda, API Gateway, SQS, SNS and EventBridge Redis and distributed caching CloudWatch, ELK/OpenSearch, Datadog, Prometheus, Grafana or Splunk OAuth 2.0/JWT and API security AWS certification Experience supporting high-volume, production-grade distributed systems ...

Dynamics Integration Specialist

Hiring Organisation
Vivo Talent
Location
Kingston Upon Thames, London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 70,000 - 71,000 Annual
performance, investigate failures and resolve data synchronisation issues, carrying out root-cause analysis and implementing preventative fixes. Implement integration security best practices, including OAuth 2.0 authentication, Microsoft Entra ID app registrations, least-privilege access and secure credential management. Manage integration changes across development, test and production environments, maintain technical ...

Full Stack Software Developer

Hiring Organisation
DCV Technologies Limited
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
Up to £450 per day Hybrid / Inside IR35
React Hooks Redux Context API NgRx Experience developing responsive, cross-browser compatible user interfaces. Security & Data Experience implementing authentication and authorization solutions using: JWT OAuth2 Strong SQL database skills with experience in: MySQL PostgreSQL Oracle Ability to write complex queries, joins, indexing strategies, and query optimization. What Were Looking ...

Platform Engineer, AWS, Kubernetes

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £525 per day
platform operations, production readiness, DR testing and incident management. Manage AWS, Kubernetes (EKS), Terraform and GitOps environments. Drive secure integrations using PKI, mTLS and OAuth2/OIDC. Define CI/CD standards, release controls and deployment pipelines. Produce ADRs and present solutions to architecture and governance boards. Manage platform roadmap ...

Full Stack Engineer

Hiring Organisation
DCV Technologies
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £450/day Hybrid / Inside IR35
Context API o NgRx • Experience developing responsive, cross-browser compatible user interfaces. Security & Data • Experience implementing authentication and authorization solutions using: o JWT o OAuth2 • Strong SQL database skills with experience in: o MySQL o PostgreSQL o Oracle • Ability to write complex queries, joins, indexing strategies, and query optimization. What ...

Marketing Cloud Technical Architect

Hiring Organisation
Vertex I.T. Solutions Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 35 Annual
Journey Builder and engineer complex, interactive CloudPages utilising HTML, CSS, JavaScript, and SSJS to support custom applications. Security & Performance: Own platform security protocols (OAuth 2.0, JWT, Encryption at Rest/Transit), manage API rate limits, and troubleshoot performance bottlenecks in massive-scale Automations and queries. Technical Governance: Establish ...

Data 360 Technical Architect

Hiring Organisation
Vertex I.T. Solutions Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 35 Annual
coding experience on the core Salesforce platform, specifically with Apex, SOQL, and Platform Events . API Architecture: Deep understanding of RESTful APIs, JSON, OAuth 2.0 flows, and webhook architecture for managing high-volume data payloads. Identity & Data Modeling: Deep technical understanding of the Customer 360 Data Model, complex Identity ...

Loyalty Management Technical Architect

Hiring Organisation
Vertex I.T. Solutions Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 35 Annual
Components (LWC), and Platform Events . API & Integration Mastery: Extensive hands-on experience designing robust integrations with external transactional systems, managing authentication (OAuth 2.0, JWT), and optimising payloads for low-latency point redemptions. Specialised Loyalty Tools: Deep technical understanding of the Data Processing Engine (DPE), Batch Management ...

Full stack Engineer

Hiring Organisation
DCV Technologies
Location
London, United Kingdom
Employment Type
Contract
responsive, cross-browser compatible applications - APIs: Developing RESTful APIs - Architecture and design: MVC architecture, design patterns, and dependency injection - Security: Authentication and authorization (JWT, OAuth2) - Databases: Hands-on SQL with MySQL, PostgreSQL, or Oracle. This includes complex queries, joins, indexing, and query optimization. ...

Apigee Engineer: Apigee, GCP, Google Cloud, API

Hiring Organisation
Curo Services
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 349 Daily
maintain API proxies, shared flows, policies, target Servers, KVMs, API products, developer applications and environment configurations. Design and implement API security patterns using OAuth 2.0, OIDC, JWT, mTLS, certificates, service accounts and appropriate secrets-management controls. Build reusable API onboarding and deployment patterns that improve developer self-service … 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 protection. ...

JWT/JSON Developer

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £650 per day
role will focus on authentication, authorisation and secure service-to-service communication across a large-scale digital platform. You'll be working on OAuth 2.0 and OpenID Connect (OIDC) implementations, JWT-based authentication, and integrations with identity providers within a modern cloud-native environment. Key Responsibilities Develop and maintain … authentication and authorisation services Implement OAuth 2.0 and OIDC integrations with identity providers Work with JSON Web Tokens (JWTs), including issuance, validation, signing and key management Contribute to CI/CD pipelines and trunk-based delivery practices Write and review technical documentation Collaborate with engineering, security and platform teams ...

Apigee Consultants: Apigee, GCP, API, Google Cloud

Hiring Organisation
Curo Services
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 349 - 585 Daily
maintain API proxies, shared flows, policies, target Servers, KVMs, API products, developer applications and environment configurations. Design and implement API security patterns using OAuth 2.0, OIDC, JWT, mTLS, certificates, service accounts and appropriate secrets-management controls. Build reusable API onboarding and deployment patterns that improve developer self-service … 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 protection. ...

Full Stack Engineer

Hiring Organisation
Gazelle Global Consulting Ltd
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
Full Stack Engineer - Contract | London | Hybrid I'm recruiting for Full Stack Engineers to join an exciting software development programme, building and enhancing scalable applications across web and mobile platforms. This is a hands-on ...