City of London, England, United Kingdom Hybrid / WFH Options
ACLED
responsive UI frameworks. Experience building scalable REST APIs using Python, Java, Golang, PHP, Node.js, etc. Knowledge of web performance tools and SEO strategies. Understanding of authentication protocols (OAuth 2.0, JWT, SAML) and security standards. Experience with CI/CD, GitHub workflows, automated deployment. Proficiency in Docker, cloud services (AWS/DigitalOcean), container orchestration. Database experience (PostgreSQL, MySQL, MongoDB). Experience More ❯
London, England, United Kingdom Hybrid / WFH Options
HKT
and PHP JUnit, Mockito, JMockit or any other tools that are used to create automated Unit Test Maven, Git, CI/CD pipeline, and Linux RESTful API, Swagger, JSON, JWT and OpenID Connect/OAuth2/SAML2 Web technologies, such as AngularJS, ReactJS, HTML5, CSS3, and etc. Relational database, such as MySQL, and schema design In-depth knowledge of object More ❯
London, England, United Kingdom Hybrid / WFH Options
Syntensor Group
and applications Knowledge of data visualization libraries such as D3.js or Chart.js Experience with unit and E2E testing (we use Cypress) Knowledge of modern authorization mechanisms, such as JSONWebToken Experience architecturing large cloud-based systems using microservices and serveless paradigm Experience designing pipelines and storage solutions for ML-driven systems with large volume of complex data Experience managing More ❯
real-time messaging and communication. Knowledge of WebSockets, real-time messaging, and event-driven architectures. Background in platform monetisation and payment integration. Strong familiarity with access control, authentication (OAuth, JWT), and data privacy regulations. More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Evermore
real-time messaging and communication. Knowledge of WebSockets, real-time messaging, and event-driven architectures. Background in platform monetisation and payment integration. Strong familiarity with access control, authentication (OAuth, JWT), and data privacy regulations. More ❯
a mix of modern and legacy tech is key Data Handling JSON serialization/deserialization DTOs and model binding Security API authentication and authorization best practices Knowledge of OAuth2, JWT, OpenID Connect Secure coding practices for exposed endpoints Integration & Communication Consuming third-party APIs (REST/SOAP) Async/await, tasks, and non-blocking design Database Integration Hands-on with More ❯
Greater London, England, United Kingdom Hybrid / WFH Options
Futuria
architectures, asynchronous processing, and tools like Celery or Kafka Familiarity with CI/CD pipelines, Docker, and DevOps workflows Experience designing or integrating authentication and authorisation systems (e.g., OAuth2, JWT) Success Metrics Deploy secure, scalable, and maintainable full-stack systems and LLM applications that deliver measurable business value Maintain low latency, high system uptime, and strong performance across APIs and More ❯
South East London, England, United Kingdom Hybrid / WFH Options
Futuria
architectures, asynchronous processing, and tools like Celery or Kafka Familiarity with CI/CD pipelines, Docker, and DevOps workflows Experience designing or integrating authentication and authorisation systems (e.g., OAuth2, JWT) Success Metrics Deploy secure, scalable, and maintainable full-stack systems and LLM applications that deliver measurable business value Maintain low latency, high system uptime, and strong performance across APIs and More ❯
Postman, Stoplight). Familiarity with API management platforms (e.g., Apigee, Azure API Management, AWS API Gateway). Understanding of HTTP methods, response codes, and common API security practices (OAuth, JWT, etc.). Excellent communication skills to interact with both business users and technical teams. Experience working with SDLC tools like Jira , Confluence , Git , and CI/CD pipelines is a More ❯
London, England, United Kingdom Hybrid / WFH Options
Natobotics
Postman, Stoplight). Familiarity with API management platforms (e.g., Apigee, Azure API Management, AWS API Gateway). Understanding of HTTP methods, response codes, and common API security practices (OAuth, JWT, etc.). Excellent communication skills to interact with both business users and technical teams. Experience working with SDLC tools like Jira , Confluence , Git , and CI/CD pipelines is a More ❯
London, England, United Kingdom Hybrid / WFH Options
Appwrite
Kubernetes, serverless environments, and container orchestration (optional but a plus). Experience with Git/GitHub and agile development workflows. Strong understanding of RESTful API design, authentication mechanisms (OAuth, JWT), and security best practices. Excellent problem-solving skills and a proactive mindset. 100% Remote Our entire company is distributed, so we take remote work seriously. If you’d rather not More ❯
expertise in TypeScript and Node.js. Proficiency in backend development with Express and RESTful API design. Experience working with MongoDB or other NoSQL databases. Understanding of authentication and authorization mechanisms (JWT, OAuth, etc.). Strong knowledge of best practices in software development, including testing, CI/CD, and DevOps. Hands-on experience with Docker and containerized environments. Familiarity with gRPC, WebSockets More ❯
London, England, United Kingdom Hybrid / WFH Options
Aker Systems Limited
with server-side rendering (SSR) and static site generation (SSG) in Next.js Experience with testing frameworks like Jest, Cypress, or React Testing Library. Experience with authentication strategies using OAuth, JWT, or Cognito Familiarity with Apache Spark/Flink for real-time data processing is an advantage. Hands-on experience with CI/CD tools Commercial awareness and knowledge of public More ❯
London, England, United Kingdom Hybrid / WFH Options
Liberis Limited
Liberis are on a mission to supercharge the power of small businesses all over the world - delivering the financial products they need to grow. Through their network of global partners, they have funded almost 40,000 small businesses with over More ❯
London, England, United Kingdom Hybrid / WFH Options
Amed Commercial Refrigeration Equipment Co., Ltd
legacy stacks, especially where high-availability and regulatory requirements intersect Architect a unified API gateway strategy that supports internal and external consumers (Example: rate limiting, authentication via OAuth2/JWT, and developer self-service) Define patterns for secure API exposure, traffic shaping, and policy enforcement Guide infrastructure decisions around container orchestration, eventing, and CI/CD (Example: implementing GitOps workflows More ❯
London, England, United Kingdom Hybrid / WFH Options
N Consulting Limited
JS and Java API integration Experience with React frameworks, Java, JPA, JSON, JavaScript, and RESTful API microservices Solid understanding of web and mobile application architecture and security, including OAuth, JWT, Spring Security #J-18808-Ljbffr More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Mackenzie Jones
Frontend Developer. Circa £45k - £50k + Benefits Package. Permanent. Fully Remote. *Must be Eligible to work in the UK. Innovative Data & Insights Research organization providing Insights for leading International Brands requires a talented Front-End Developer. The role will partner More ❯
Frontend Developer. Circa £45k - £50k + Benefits Package. Permanent. Fully Remote. *Must be Eligible to work in the UK. Innovative Data & Insights Research organization providing Insights for leading International Brands requires a talented Front-End Developer. The role will partner More ❯
vanilla JavaScript/TypeScript Understanding of WebAssembly Deep understanding of web security issues Significant hands-on experience with React Experience at developing services (RESTful API) including strong authentication (using JWT, 3rd party identity provider, etc), ORM and SQL or NoSQL (document oriented) databases Commercial experience designing and building CI/CD, CDNs, RESTful APIs Strong experience writing easily testable code More ❯
North West London, London, United Kingdom Hybrid / WFH Options
ByteHire
Communicate clearly, seek clarification when needed. Navigate ambiguity and working with minimal supervision. Develop and maintain backend services using C# and .NET Core. Design and test REST APIs with JWT-based authentication (OAuth is desirable for the future). Write performant SQL for PostgreSQL databases; help design schemas and queries. Build and manage WebSocket connections for real-time features. Build … in Linux-based production environments. Comfortable navigating ambiguity and working with minimal supervision. Strong SQL knowledge, with experience using PostgreSQL in live systems. REST API development experience; understanding of JWT and cookie-based auth. Familiarity with Docker and AWS services, from a developer perspective. Comfortable with WebSockets. Comfortable with building lightweight frontends in Blazor or similar. Strong communicator with a More ❯
Communicate clearly, seek clarification when needed. Navigate ambiguity and working with minimal supervision. Develop and maintain backend services using C# and .NET Core. Design and test REST APIs with JWT-based authentication (OAuth is desirable for the future). Write performant SQL for PostgreSQL databases; help design schemas and queries. Build and manage WebSocket connections for real-time features. Build … in Linux-based production environments. Comfortable navigating ambiguity and working with minimal supervision. Strong SQL knowledge, with experience using PostgreSQL in live systems. REST API development experience; understanding of JWT and cookie-based auth. Familiarity with Docker and AWS services, from a developer perspective. Comfortable with WebSockets. Comfortable with building lightweight frontends in Blazor or similar. Strong communicator with a More ❯
City of London, London, United Kingdom Hybrid / WFH Options
VoxOps AI
Communicate clearly, seek clarification when needed. Navigate ambiguity and working with minimal supervision. Develop and maintain backend services using C# and .NET Core. Design and test REST APIs with JWT-based authentication (OAuth is desirable for the future). Write performant SQL for PostgreSQL databases; help design schemas and queries. Build and manage WebSocket connections for real-time features. Build … in Linux-based production environments. Comfortable navigating ambiguity and working with minimal supervision. Strong SQL knowledge, with experience using PostgreSQL in live systems. REST API development experience; understanding of JWT and cookie-based auth. Familiarity with Docker and AWS services, from a developer perspective. Comfortable with WebSockets. Comfortable with building lightweight frontends in Blazor or similar. Strong communicator with a More ❯
Greater London, England, United Kingdom Hybrid / WFH Options
ByteHire
Communicate clearly, seek clarification when needed. Navigate ambiguity and working with minimal supervision. Develop and maintain backend services using C# and .NET Core. Design and test REST APIs with JWT-based authentication (OAuth is desirable for the future). Write performant SQL for PostgreSQL databases; help design schemas and queries. Build and manage WebSocket connections for real-time features. Build … in Linux-based production environments. Comfortable navigating ambiguity and working with minimal supervision. Strong SQL knowledge, with experience using PostgreSQL in live systems. REST API development experience; understanding of JWT and cookie-based auth. Familiarity with Docker and AWS services, from a developer perspective. Comfortable with WebSockets. Comfortable with building lightweight frontends in Blazor or similar. Strong communicator with a More ❯
like Grafana and CI/CD systems such as GitHub Actions . Experience with secure authentication workflows, including protocols like OAuth2 and OpenID Connect, and token-based authentication (e.g., JWT). Proven experience in designing and implementing secure systems to protect sensitive customer data, including encryption of data at rest and in transit. A proactive approach to solving complex problems More ❯