London, South East, England, United Kingdom Hybrid / WFH Options
E.ON
Mid to Senior Software Engineer We're looking for enthusiastic backend software engineers who are passionate about building great products. Now is the time more than ever to revolutionise the energy industry to ensure its stability, affordability, and sustainability. If More ❯
Agentic AI-Powered FinTech Location: London/Hybrid (2 days per week in the office) Up to £130,000 per annum plus stock options Typescript | Node | React | Next.js | AWS | GraphQL Senior Full Stack Engineer - We’re partnering with a well-funded, cutting-edge startup that’s redefining how professionals in the financial services industry interact with artificial intelligence. They’re … as a Full Stack Engineer with JavaScript/TypeScript Strong frontend expertise in React, NextJS, and modern tooling (Tailwind, etc.) Solid backend skills with Node.js, Express, RESTful APIs or GraphQL Experience building production-grade applications and designing clean data models (SQL/NoSQL) Bonus Points For: Familiarity with AI/LLM tools (LangChain, Vercel AI SDK, OpenAI APIs) Experience building … Agentic AI-Powered FinTech Location: London/Hybrid (2 days per week in the office) Up to £130,000 per annum plus stock options Typescript | Node | React | Next.js | AWS | GraphQLMore ❯
City of London, Greater London, UK Hybrid / WFH Options
Burns Sheehan
Agentic AI-Powered FinTech Location: London/Hybrid (2 days per week in the office) Up to £130,000 per annum plus stock options Typescript | Node | React | Next.js | AWS | GraphQL Senior Full Stack Engineer - We’re partnering with a well-funded, cutting-edge startup that’s redefining how professionals in the financial services industry interact with artificial intelligence. They’re … as a Full Stack Engineer with JavaScript/TypeScript Strong frontend expertise in React, NextJS, and modern tooling (Tailwind, etc.) Solid backend skills with Node.js, Express, RESTful APIs or GraphQL Experience building production-grade applications and designing clean data models (SQL/NoSQL) Bonus Points For: Familiarity with AI/LLM tools (LangChain, Vercel AI SDK, OpenAI APIs) Experience building … Agentic AI-Powered FinTech Location: London/Hybrid (2 days per week in the office) Up to £130,000 per annum plus stock options Typescript | Node | React | Next.js | AWS | GraphQLMore ❯
Experience: Strong commercial experience as a Ruby Developer, with a proven track record of delivering complex projects. Demonstrable strong experience working on APIs, including design, development, and integration (RESTful, GraphQL). Proficiency in Node.js for specific backend services and tooling. Solid understanding of JavaScript for front-end integration and broader development needs. Experience with relational databases (e.g., PostgreSQL, MySQL). More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Talent
Experience: Strong commercial experience as a Ruby Developer, with a proven track record of delivering complex projects. Demonstrable strong experience working on APIs, including design, development, and integration (RESTful, GraphQL). Proficiency in Node.js for specific backend services and tooling. Solid understanding of JavaScript for front-end integration and broader development needs. Experience with relational databases (e.g., PostgreSQL, MySQL). More ❯
City of London, London, United Kingdom Hybrid / WFH Options
IPS Group
highly desirable. At least 5 years’ experience developing enterprise applications using the Microsoft technology stack, including: Proficiency in C# .NET and SQL Server. Solid working knowledge of React, JavaScript, GraphQL, REST and SOAP APIs. A deep understanding of tiered application architectures, cloud infrastructure, and serverless technologies. Hands-on experience with modern UI state management and modular development. Strong background in More ❯
highly desirable. At least 5 years’ experience developing enterprise applications using the Microsoft technology stack, including: Proficiency in C# .NET and SQL Server. Solid working knowledge of React, JavaScript, GraphQL, REST and SOAP APIs. A deep understanding of tiered application architectures, cloud infrastructure, and serverless technologies. Hands-on experience with modern UI state management and modular development. Strong background in More ❯
A Bachelor's degree in computer science, Information Technology, or a related field Mid to senior level experienced developer Experience with APIs and using patterns such as REST and GraphQL Experience with testing frameworks and methodologies, ensuring the delivery of high-quality software Strong problem-solving skills and attention to detail Excellent communication and collaboration skills Desirable(but not essential More ❯
Join a dynamic energy provider dedicated to sustainable solutions in the UK. We seek enthusiastic and resourceful Backend Python Engineers at mid to senior levels who are passionate about crafting exceptional products. Initially it will be a five-month contract More ❯
City of London, London, Farringdon, United Kingdom Hybrid / WFH Options
Rullion - Eon
Join a dynamic energy provider dedicated to sustainable solutions in the UK. We seek enthusiastic and resourceful Backend Python Engineers at mid to senior levels who are passionate about crafting exceptional products. Initially it will be a five-month contract More ❯
IVR integrations, Agent desktop Payments and collection Identity and Authentication Service Mesh (Istio, etc.); Knowledge Background of ESB or SOA; Gradle/Maven/Build tools; GCP/GKE; GraphQL; Splunk/StackDriver/Logging Monitoring Traceability For any Developer focussed on Backend the following skills is essential: Training and working knowledge of relevant tools and systems to perform their … role, e.g., Node.js/Express or other backend frameworks, RESTful and GraphQL APIs, databases (SQL/NoSQL), containerisation tools (Docker, Kubernetes), version control (Git), CI/CD pipelines (e.g., Jenkins, GitHub Actions), cloud services (e.g., GCP, AWS), and monitoring/logging tools (e.g., Datadog, Dynatrace, Grafana). More ❯
City of London, Greater London, UK Hybrid / WFH Options
Superstars
IVR integrations, Agent desktop Payments and collection Identity and Authentication Service Mesh (Istio, etc.); Knowledge Background of ESB or SOA; Gradle/Maven/Build tools; GCP/GKE; GraphQL; Splunk/StackDriver/Logging Monitoring Traceability For any Developer focussed on Backend the following skills is essential: Training and working knowledge of relevant tools and systems to perform their … role, e.g., Node.js/Express or other backend frameworks, RESTful and GraphQL APIs, databases (SQL/NoSQL), containerisation tools (Docker, Kubernetes), version control (Git), CI/CD pipelines (e.g., Jenkins, GitHub Actions), cloud services (e.g., GCP, AWS), and monitoring/logging tools (e.g., Datadog, Dynatrace, Grafana). More ❯
and backend systems—in a mission-led, product-obsessed, high-performance team. 🧑💻 What You’ll Do: Design, build, test, and ship new features across React Native, Node.js, AWS, and GraphQL Work cross-functionally with product, design, and other engineers to deliver high-quality UX Own full lifecycle of development from architecture and coding to deployment and observability Contribute to developer … take turns leading production deployments Work closely with CTO and co-founders in shaping product and tech direction 🛠 Tech Stack: Frontend: React Native (iOS/Android), SwiftUI (Watch), TypeScript, GraphQL (Apollo) Backend: AWS Lambda (Node.js & Python), AppSync, DynamoDB, S3, EventBridge, SNS Tooling: GitHub Actions, Fastlane, Sentry, Mixpanel, Intercom, Maestro E2E, Terraform ✅ What You Bring: 4+ years of software engineering experience More ❯
and backend systems—in a mission-led, product-obsessed, high-performance team. 🧑💻 What You’ll Do: Design, build, test, and ship new features across React Native, Node.js, AWS, and GraphQL Work cross-functionally with product, design, and other engineers to deliver high-quality UX Own full lifecycle of development from architecture and coding to deployment and observability Contribute to developer … take turns leading production deployments Work closely with CTO and co-founders in shaping product and tech direction 🛠 Tech Stack: Frontend: React Native (iOS/Android), SwiftUI (Watch), TypeScript, GraphQL (Apollo) Backend: AWS Lambda (Node.js & Python), AppSync, DynamoDB, S3, EventBridge, SNS Tooling: GitHub Actions, Fastlane, Sentry, Mixpanel, Intercom, Maestro E2E, Terraform ✅ What You Bring: 4+ years of software engineering experience More ❯
problem solve and quickly create awesome prototypes and user based solutions. Implement and maintain our design systems, component libraries and UI frameworks (e.g. ChakraUI, Tailwind). Develop and integrate GraphQL APIs to improve data efficiency and performance. Deploy containers using Docker, contributing to a smooth CI/CD workflow. Open to learning new technologies and best practices as the business … Deep expertise in modern web development technologies: TypeScript, ReactJS, NextJS, and NodeJS. Experience working with CSS, component libraries and design systems (ChakraUI, Tailwind or similar). Some knowledge of GraphQL for API development and integration. Proficiency with Docker and containerisation. A continuous learning mindset and adaptability in a fast-paced, evolving startup environment. Genuine excitement at the opportunity to work More ❯
offered by AWS like DynamoDB. We're big fans of using the right tool for the job. The main product frontend is all Typescript/React that talks to GraphQL backends. Other parts of the business use React/NextJS or even Svelte. We've spent time looking at maturing technologies like Web Components and have some ideas on improving … and Facebook, but we also envision integrations with systems like eBay messages or Apple/Google app stores. We'll be able to process any kind of communication. New GraphQL API backends. More ❯
software engineering. Testing and validation : Develop comprehensive unit and integration tests to ensure the reliability and accuracy of our AI retrieval systems. API development : Build and maintain REST and GraphQL APIs using frameworks like FastAPI and Flask to expose our AI retrieval capabilities to other services and applications. Streaming and cancelable endpoints : Implement streaming responses and cancelable endpoints to support … and performance profiling : Proficient in using tools like tracemalloc and cProfile to identify and optimize memory usage and performance bottlenecks. API development : Experienced in developing and maintaining REST and GraphQL APIs using frameworks like FastAPI and Flask. Streaming responses and cancelable endpoints : Capable of implementing streaming responses and cancelable endpoints to support real-time and interactive use cases. Preferred skills More ❯
of developers Ability to help in coaching and mentoring junior members of the team Desirable - experience with other development languages, frameworks and testing frameworks such as TypeScript, NodeJS, NextJS, GraphQL and Cypress Knowledge and experience with AWS Lambdas More ❯
of developers Ability to help in coaching and mentoring junior members of the team Desirable - experience with other development languages, frameworks and testing frameworks such as TypeScript, NodeJS, NextJS, GraphQL and Cypress Knowledge and experience with AWS Lambdas More ❯
new and emerging technologies Adds to team culture of diversity, equity, inclusion, and respect Design, develop and maintain microservices using Kotlin or Java with Spring Boot Build robust, scalable GraphQL Apis and backend components Deploy, monitor and manage services in AWS, particularly EKS (Kubernetes) Write clean, well-documented, and testable code Required qualifications, capabilities, and skills Formal training or certification More ❯
to reducing customer issue resolution time What You'll Bring Essential Requirements Full-stack development experience with proven ability to ship production applications Strong API development expertise including REST, GraphQL, and third-party integrations Proficiency in JavaScript, HTML, and CSS with modern framework experience Database design and implementation experience (SQL and NoSQL) Experience building and deploying scalable web applications in More ❯
up delivery, reduce risk and provide maximum value to the end users Knowledge of the Trading business domain Knowledge or application of the Scaled Agile Framework (SAFe) Experience of GraphQL and subscription based streaming Actor frameworks like DAPR, AKKA, Orleans Job Band & Level: Not The Perfect Fit? Concerned that you may not meet the criteria precisely? At TP ICAP, we More ❯
The tech stack is React Native mobile app , some React web frontends , and a Serverless Lambda backend on AWS . We're using Typescript top to bottom , and Apollo GraphQL sits in the middle. We keep our data in DynamoDB , Postgres and snowflake for our data-lake using one or the other as best suits a particular workload. You can More ❯
