+ backend + API) from design to production deployment . Hands-on with TypeScript , React , Node/Express , SQL/PostgreSQL , Docker , CI/CD . Building and consuming RESTful APIs ; JSON schemas; integration testing. Comfortable in AWS and modern Infrastructure-as-Code approaches. Strong engineering fundamentals: code reviews, testing, observability, performance tuning . Security Clearance: Active SC or DV More ❯
City of London, Greater London, UK Hybrid / WFH Options
Areti Group | B Corp
+ backend + API) from design to production deployment . Hands-on with TypeScript , React , Node/Express , SQL/PostgreSQL , Docker , CI/CD . Building and consuming RESTful APIs ; JSON schemas; integration testing. Comfortable in AWS and modern Infrastructure-as-Code approaches. Strong engineering fundamentals: code reviews, testing, observability, performance tuning . Security Clearance: Active SC or DV More ❯
City of London, Greater London, UK Hybrid / WFH Options
Bondaval
a senior/lead, you will have built and designed distributed systems and scalable architectures. Experience with relational databases (Postgres) and NoSQL databases (MongoDB, Redis, Cassandra). Experience with RESTful API design and integration. Familiarity with front-end frameworks (VueJS, React, or Angular). Good knowledge of source control (Git) and CI/CD tools. Understanding of infrastructure and deployment More ❯
Python for backend development. Experience with modern frontend frameworks (e.g., React, Vue, Angular). Solid understanding of database technologies (e.g., PostgreSQL, MySQL) and data modeling. Experience designing and building RESTful APIs. Experience with cloud platforms (e.g., AWS, GCP, Azure) and containerization (e.g., Docker). Proven ability to architect and deliver complex features end-to-end. Excellent problem-solving skills and More ❯
engineering, or a related field Proficiency in React.js and its core principles Strong JavaScript, TypeScript HTML5, and CSS3 skills Experience with popular React.js workflows (such as Redux) Familiarity with RESTful APIs and integration Knowledge of modern authorization mechanisms, such as JSON Web Tokens Understanding of front-end build tools and pipelines Excellent problem-solving and communication skills A strong attention More ❯
engineering, or a related field Proficiency in React.js and its core principles Strong JavaScript, TypeScript HTML5, and CSS3 skills Experience with popular React.js workflows (such as Redux) Familiarity with RESTful APIs and integration Knowledge of modern authorization mechanisms, such as JSON Web Tokens Understanding of front-end build tools and pipelines Excellent problem-solving and communication skills A strong attention More ❯
City of London, Greater London, UK Hybrid / WFH Options
X4 Technology
and maintainability are applied throughout Requirements for the Contract Python Developer (Commodities) 8+ years of software engineering experience, with 4-6 years of professional Python development Strong experience building RESTful APIs and working with frameworks such as Django, Flask, or FastAPI Familiarity with containerisation (Docker), CI/CD pipelines, and infrastructure-as-code tools Exposure to cloud platforms (preferably AWS More ❯
GitHub Actions). Familiarity with containerization and orchestration (e.g., Docker, Kubernetes) is a plus. Proficiency with Linux-based systems , server configuration, and deployment automation. Understanding of modern API design , RESTful services, and microservices architecture. Ability to write clean, maintainable, and well-tested code following best practices. Excellent problem-solving skills, attention to detail, and a proactive approach to challenges. Strong More ❯
City of London, Greater London, UK Hybrid / WFH Options
Provide
/Scrum/Kanban environment. Requirements Proficiency in React, React Native, and Next.js is a strongly required. Proficiency in Frontend technology i.e. Javascript, Typescript, HTML, and CSS. Familiar with RESTful APIs and GraphQL Experience with Backend such as Python and mySQL or similar. Experience architecting web applications and supporting underlying CI/CD platforms. Consider the reusability of code, components More ❯
Role This position offers the opportunity to design and develop advanced applications that drive urban innovation. Responsibilities include: Designing and developing backend, desktop, and web applications. Building and maintaining RESTful APIs and microservices. Writing clean, efficient, and scalable code in Unity, C#, JavaScript, and TypeScript. Developing spatial databases and optimised queries using PostgreSQL/PostGIS. Supporting full testing cycles, product More ❯
City of London, Greater London, UK Hybrid / WFH Options
MNRecruit
Role This position offers the opportunity to design and develop advanced applications that drive urban innovation. Responsibilities include: Designing and developing backend, desktop, and web applications. Building and maintaining RESTful APIs and microservices. Writing clean, efficient, and scalable code in Unity, C#, JavaScript, and TypeScript. Developing spatial databases and optimised queries using PostgreSQL/PostGIS. Supporting full testing cycles, product More ❯
maintain complex full-stack applications across both front-end and back-end. Cloud & Database Management : Build scalable, cloud-based solutions using AWS , PostgreSQL , and DynamoDB . API Development : Integrate RESTful APIs and GraphQL to enable smooth data flow between services. Software Design Patterns : Apply TDD (Test Driven Development) and DDD (Domain Driven Design) best practices to ensure maintainable, efficient code. More ❯
maintain complex full-stack applications across both front-end and back-end. Cloud & Database Management : Build scalable, cloud-based solutions using AWS , PostgreSQL , and DynamoDB . API Development : Integrate RESTful APIs and GraphQL to enable smooth data flow between services. Software Design Patterns : Apply TDD (Test Driven Development) and DDD (Domain Driven Design) best practices to ensure maintainable, efficient code. More ❯
maintain complex full-stack applications across both front-end and back-end. Cloud & Database Management : Build scalable, cloud-based solutions using AWS , PostgreSQL , and DynamoDB . API Development : Integrate RESTful APIs and GraphQL to enable smooth data flow between services. Software Design Patterns : Apply TDD (Test Driven Development) and DDD (Domain Driven Design) best practices to ensure maintainable, efficient code. More ❯
City of London, Greater London, UK Hybrid / WFH Options
Areti Group | B Corp
maintain complex full-stack applications across both front-end and back-end. Cloud & Database Management : Build scalable, cloud-based solutions using AWS , PostgreSQL , and DynamoDB . API Development : Integrate RESTful APIs and GraphQL to enable smooth data flow between services. Software Design Patterns : Apply TDD (Test Driven Development) and DDD (Domain Driven Design) best practices to ensure maintainable, efficient code. More ❯
and API Management. Good exposure to MuleSoft, Solace, SAP BTP, and hybrid integration scenarios. Technical Skills Strong understanding of cloud-native architecture, microservices, and integration design patterns. Proficient in RESTful APIs, JSON, XML, and messaging protocols. Familiarity with DevOps practices and CI/CD pipelines using Azure DevOps. Experience with C#, .NET, and scripting languages like PowerShell. Preferred Certifications Microsoft More ❯
and API Management. Good exposure to MuleSoft, Solace, SAP BTP, and hybrid integration scenarios. Technical Skills Strong understanding of cloud-native architecture, microservices, and integration design patterns. Proficient in RESTful APIs, JSON, XML, and messaging protocols. Familiarity with DevOps practices and CI/CD pipelines using Azure DevOps. Experience with C#, .NET, and scripting languages like PowerShell. Preferred Certifications Microsoft More ❯
Tech Stack: Extensive React UI Development. Solid JavaScript programming Experience with Typescript Experience with Data Visualisation development. HTML and C55 Experience in Real Time trading application. Experience with GraphQL RESTful API development. BSc with Computer Science, Engineering or Mathematics. Experience with Financial Services, Fintech or Trading environment. With a generous Basic Salary there is also a very healthy bonus scheme More ❯
Tech Stack: Extensive React UI Development. Solid JavaScript programming Experience with Typescript Experience with Data Visualisation development. HTML and C55 Experience in Real Time trading application. Experience with GraphQL RESTful API development. BSc with Computer Science, Engineering or Mathematics. Experience with Financial Services, Fintech or Trading environment. With a generous Basic Salary there is also a very healthy bonus scheme More ❯
of Focus : Next-Gen Execution Management Systems (EMS) Trade lifecycle tools: booking, intraday PnL, ops workflows STP-by-exception reconciliation and integration with affirmation platforms Broader Tech Strategy Involves: RESTful API architecture to expose middle office services across the firm Migration of core systems to the cloud Deep integration with global data platforms: market, trade, static, PnL, and risk Strategic More ❯
of Focus : Next-Gen Execution Management Systems (EMS) Trade lifecycle tools: booking, intraday PnL, ops workflows STP-by-exception reconciliation and integration with affirmation platforms Broader Tech Strategy Involves: RESTful API architecture to expose middle office services across the firm Migration of core systems to the cloud Deep integration with global data platforms: market, trade, static, PnL, and risk Strategic More ❯
