end-to-end. Work side by side with the CEO on roadmap, demos, and sales. What you need to bring: Backend/API experience at scale. Database & infrastructure background (Postgres, Elasticsearch, scraping). Front end (React/Next.js) ideal. Startup grit, passion & exciting to build something special! What’s in it for you: 20%+ vested equity as milestones are More ❯
surface AI insights driven by cutting-edge data-science techniques and our valuable datasets. The most important parts of our stack: TypeScript React Express (Node) Event-driven processing (RabbitMQ) PostgreSQL Databases Docker Kubernetes Jenkins CI/CD Key Skills & Experience Expert-level programming with NodeJS (preferably TypeScript) Moderate-level programming with ReactJS Strong awareness of secure coding standards (e.g., OWASP … CWE). Docker & Kubernetes SQL (preferably Postgres or Oracle) Skilled in identifying and refactoring anti-patterns and managing technical debt. Proficient in CI/CD practices and tooling (e.g., Jenkins). Strong background in test strategy and execution—from unit and integration tests to performance and regulatory testing. Responsibilities Design and build scalable applications and services, following best practices for More ❯
surface AI insights driven by cutting-edge data-science techniques and our valuable datasets. The most important parts of our stack: TypeScript React Express (Node) Event-driven processing (RabbitMQ) PostgreSQL Databases Docker Kubernetes Jenkins CI/CD Key Skills & Experience Expert-level programming with NodeJS (preferably TypeScript) Moderate-level programming with ReactJS Strong awareness of secure coding standards (e.g., OWASP … CWE). Docker & Kubernetes SQL (preferably Postgres or Oracle) Skilled in identifying and refactoring anti-patterns and managing technical debt. Proficient in CI/CD practices and tooling (e.g., Jenkins). Strong background in test strategy and execution—from unit and integration tests to performance and regulatory testing. Responsibilities Design and build scalable applications and services, following best practices for More ❯
East London, London, United Kingdom Hybrid / WFH Options
InfinityQuest Ltd,
Engineer (Python focused with trading background) Location: Canary Wharf, UK (Hybrid) (3 days onsite & 2 days remote) Role Type: 6 Months Contract with possibility of extensions Mandatory Skills : Python, Postgres SQL, Azure Databricks, AWS(S3), Git, Azure DevOps CICD, Apache Airflow, Energy Trading experience Job Description:- Data Engineer (Python enterprise developer): 6+ years of experience in python scripting. Proficient in … developing applications in Python language. Exposed to python-oriented Algorithms libraries such as NumPy, pandas, beautiful soup, Selenium, pdfplumber, Requests etc. Proficient in SQL programming, Postgres SQL. Knowledge on DevOps like CI/CD, Jenkins, Git. Experience working with AWS(S3) and Azure Databricks. Have experience in delivering project with Agile and Scrum methodology. Able to co-ordinate with Teams More ❯
collaborate with cross-functional teams to build scalable data pipelines and contribute to digital transformation initiatives across government departments. Key Responsibilities Design, develop and maintain robust data pipelines using PostgreSQL and Airflow or Apache Spark Collaborate with frontend/backend developers using Node.js or React Implement best practices in data modelling, ETL processes and performance optimisation Contribute to containerised deployments … is desirable, not essential Operate within Agile teams and support DevOps practices What We're Looking For Proven experience as a Data Engineer in complex environments Strong proficiency in PostgreSQL and either Airflow or Spark Solid understanding of Node.js or React for integration and tooling Familiarity with containerisation technologies (Docker/Kubernetes) is a plus Excellent communication and stakeholder engagement More ❯
collaborate with cross-functional teams to build scalable data pipelines and contribute to digital transformation initiatives across government departments. Key Responsibilities Design, develop and maintain robust data pipelines using PostgreSQL and Airflow or Apache Spark Collaborate with frontend/backend developers using Node.js or React Implement best practices in data modelling, ETL processes and performance optimisation Contribute to containerised deployments … is desirable, not essential Operate within Agile teams and support DevOps practices What We're Looking For Proven experience as a Data Engineer in complex environments Strong proficiency in PostgreSQL and either Airflow or Spark Solid understanding of Node.js or React for integration and tooling Familiarity with containerisation technologies (Docker/Kubernetes) is a plus Excellent communication and stakeholder engagement More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Noir
Java Developer – Financial Technology – London/Hybrid (INSIDE IR35) (Key skills: Java, Spring Boot, Kubernetes, AWS EKS, Amazon Redshift, PostgreSQL, RESTful APIs, CI/CD, Microservices, iOS/Android Native, Agile, Financial Services) Are you a highly skilled Java Developer with a passion for building scalable, high-performance financial systems? Do you enjoy working with cutting-edge technologies across backend … Kubernetes , and integrated with modern mobile and analytics platforms. As part of a collaborative, Agile development team, you will be responsible for building robust microservices, managing data pipelines across PostgreSQL and Amazon Redshift , and delivering performant, secure RESTful APIs used across web and mobile platforms. You’ll work closely with iOS and Android engineers to ensure seamless end-to-end More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Noir
Java Developer - Financial Technology - London/Hybrid (INSIDE IR35) (Key skills: Java, Spring Boot, Kubernetes, AWS EKS, Amazon Redshift, PostgreSQL, RESTful APIs, CI/CD, Microservices, iOS/Android Native, Agile, Financial Services) Are you a highly skilled Java Developer with a passion for building scalable, high-performance financial systems? Do you enjoy working with cutting-edge technologies across backend … Kubernetes , and integrated with modern mobile and analytics platforms. As part of a collaborative, Agile development team, you will be responsible for building robust microservices, managing data pipelines across PostgreSQL and Amazon Redshift , and delivering performant, secure RESTful APIs used across web and mobile platforms. You'll work closely with iOS and Android engineers to ensure seamless end-to-end More ❯
integration: Connect and orchestrate large language models (OpenAI, Bedrock, etc.), manage prompts, tools, safeguards, and evaluation. Data pipelines: Ingest, clean, and transform structured and unstructured data; design efficient schemas (Postgres/NoSQL) for search and analytics. Frontend (React/Next.js): Deliver user-friendly, performant UIs that make AI-powered features (search, filters, explanations, citations) clear and accessible. Architecture: Shape a … chunking strategies, indexing, precision/recall trade-offs, reranking, and evaluation techniques. Proficient in Python (FastAPI) and React/Next.js . Solid experience with both SQL and NoSQL databases (Postgres, DynamoDB, etc.). Exposure to LLMs, embeddings, and vector search APIs . Strong understanding of data engineering , schema design, ETL, and optimisation. Proficiency with cloud (AWS preferred) and containerised deployments More ❯
Golang Software Backend Engineer Fully Remote/UK Working Hours A couple of Golang Software Backend Engineers are required for an exciting and innovative Software house company based in London and Hong Kong. The company operates at the forefront of More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Venture Up
Golang Software Backend Engineer Fully Remote/UK Working Hours A couple of Golang Software Backend Engineers are required for an exciting and innovative Software house company based in London and Hong Kong. The company operates at the forefront of More ❯
smart-city application. Collaborate with surveyors, architects, and engineers to transform complex data into immersive visualisations and scalable tools . Work with modern technologies such as Unity 2022+, C#, PostgreSQL/PostGIS, Azure DevOps, and Cesium for Unity , delivering solutions that support smarter, more sustainable cities. The Role This position offers the opportunity to design and develop advanced applications that … 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 upgrades, and change management processes. Collaborating with cross-functional teams to deliver robust, future-ready solutions. What They’re Looking For Strong Unity … development experience, including URP/HDRP pipelines, Addressables, and Job System . Skills in C# (.NET 6/8), Cesium for Unity, PostgreSQL/PostGIS, and Entity Framework Core . Familiarity with modern frontend frameworks such as React with TypeScript . Strong Agile, DevOps, and CI/CD experience. An interest in geospatial technologies, CAD workflows, or cloud deployment would More ❯
problems, and wearing multiple hats — this role is for you. You’ll be hands-on with Next.js 15 (App Router), TypeScript, Node.js/Nest.js, and modern tools like Prisma, PostgreSQL, and MongoDB. You’ll also help plan features, manage tasks, and collaborate on building a strong development team. Key Responsibilities Build end-to-end features — from designing APIs to shipping … polished frontends. Own full stack development with Next.js 15 (App Router), TypeScript, and Node.js/Nest.js. Design and integrate RESTful APIs, ensuring scalability, performance, and security. Work with PostgreSQL, MongoDB, Prisma, and Mongoose for data modeling and queries. Apply rendering strategies (SSR, SSG, ISR, PPR) to deliver fast, SEO-friendly apps. Optimize performance across frontend and backend — speed, accessibility, DX. … experience with JavaScript, TypeScript, and Node.js. Proven track record with Next.js (ideally v15 with App Router). Hands-on with backend frameworks (Node.js/Nest.js). Experience with Prisma, PostgreSQL, MongoDB, and Mongoose. Solid grasp of API design, security, and performance optimization. Familiar with state management (Zustand, Redux, useContext). Exposure to project management tools (Jira, Linear, Notion, Trello, etc. More ❯
problems, and wearing multiple hats — this role is for you. You’ll be hands-on with Next.js 15 (App Router), TypeScript, Node.js/Nest.js, and modern tools like Prisma, PostgreSQL, and MongoDB. You’ll also help plan features, manage tasks, and collaborate on building a strong development team. Key Responsibilities Build end-to-end features — from designing APIs to shipping … polished frontends. Own full stack development with Next.js 15 (App Router), TypeScript, and Node.js/Nest.js. Design and integrate RESTful APIs, ensuring scalability, performance, and security. Work with PostgreSQL, MongoDB, Prisma, and Mongoose for data modeling and queries. Apply rendering strategies (SSR, SSG, ISR, PPR) to deliver fast, SEO-friendly apps. Optimize performance across frontend and backend — speed, accessibility, DX. … experience with JavaScript, TypeScript, and Node.js. Proven track record with Next.js (ideally v15 with App Router). Hands-on with backend frameworks (Node.js/Nest.js). Experience with Prisma, PostgreSQL, MongoDB, and Mongoose. Solid grasp of API design, security, and performance optimization. Familiar with state management (Zustand, Redux, useContext). Exposure to project management tools (Jira, Linear, Notion, Trello, etc. More ❯
closely with product, design, and sales teams to shape solutions that matter Engage in code reviews, pair programming, and continuous improvement of Agile processes Help optimize data handling with PostgreSQL and contribute to microservice-based architecture We’re looking for a Python Developer who: Has strong expertise in Python backend development and experience with RESTful API design Is comfortable with … relational databases like PostgreSQL and cloud infrastructure on AWS Thrives in a collaborative environment and communicates technical ideas clearly Brings a problem-solving mindset and a passion for quality and innovation Has exposure or interest in container orchestration and infrastructure tools like Kubernetes and Terraform (a plus, but not required) This Python Developer opportunity is perfect for someone keen on More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Anson McCade
closely with product, design, and sales teams to shape solutions that matter Engage in code reviews, pair programming, and continuous improvement of Agile processes Help optimize data handling with PostgreSQL and contribute to microservice-based architecture We’re looking for a Python Developer who: Has strong expertise in Python backend development and experience with RESTful API design Is comfortable with … relational databases like PostgreSQL and cloud infrastructure on AWS Thrives in a collaborative environment and communicates technical ideas clearly Brings a problem-solving mindset and a passion for quality and innovation Has exposure or interest in container orchestration and infrastructure tools like Kubernetes and Terraform (a plus, but not required) This Python Developer opportunity is perfect for someone keen on More ❯
junior developers, and help define best practices Hybrid working — 3 days per week in South London , with flexibility on other days Tech Stack Backend: Python, Django, REST APIs Database: PostgreSQL Cloud: Heroku, AWS Frontend: HTML, CSS, JavaScript, Bootstrap, HTMX Tooling: GitHub Actions, Notion, Slack, Jira (as the team scales) What They’re Looking For 3–5+ years’ experience developing and … maintaining web applications Strong Python/Django backend skills Solid experience with database schema design, optimisation, and performance (PostgreSQL/MySQL) Confident working with RESTful APIs and cloud deployment (Heroku/AWS) Excellent communication and collaboration skills within fast-paced, agile teams Interest in mentoring junior developers and helping shape an early-stage engineering culture Based in London, UK , eligible More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Harrington Starr
Java, or C# Proven track record of performance tuning in large-scale, distributed systems Expertise in profiling tools, memory management, and debugging complex performance issues Strong database optimisation skills (Postgres, SQL Server, or similar) Experience with containerised and cloud-native environments ( Kubernetes, Docker, AWS, Azure ) Familiarity with load testing tools (e.g. k6, JMeter, Gatling) and monitoring solutions Excellent communication skills … shape system architecture and mentor future engineering leaders Flexible Hybrid working in Central London up to £85,000 basic plus market leading bonus structures Tech Stack: Python, Java, C#, Postgres, Kubernetes, Docker, AWS, Azure, k6, JMeter, Gatling If you’re passionate about pushing the boundaries of performance engineering and building software that scales effortlessly, we’d love to hear from More ❯
Java, or C# Proven track record of performance tuning in large-scale, distributed systems Expertise in profiling tools, memory management, and debugging complex performance issues Strong database optimisation skills (Postgres, SQL Server, or similar) Experience with containerised and cloud-native environments ( Kubernetes, Docker, AWS, Azure ) Familiarity with load testing tools (e.g. k6, JMeter, Gatling) and monitoring solutions Excellent communication skills … shape system architecture and mentor future engineering leaders Flexible Hybrid working in Central London up to £85,000 basic plus market leading bonus structures Tech Stack: Python, Java, C#, Postgres, Kubernetes, Docker, AWS, Azure, k6, JMeter, Gatling If you’re passionate about pushing the boundaries of performance engineering and building software that scales effortlessly, we’d love to hear from More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Digital Waffle
UK What you’ll be doing: Lead the refactor of a large legacy system into a modern, scalable cloud-native product Design and implement new architecture using AWS microservices, PostgreSQL, Node.js, React, and TypeScript Use AI-assisted tools such as OpenAI, LangChain, Claude, or Hugging Face to enhance efficiency, code quality, and testing Establish clean engineering practices, including CI/… future engineering capability What you’ll need: 7+ years’ experience building or refactoring large-scale applications (ERP or SaaS experience ideal) Strong technical background with Python, TypeScript, React, Node.js, PostgreSQL, and AWS Proven experience in greenfield development and system modernisation Interest or hands-on experience with AI-driven development tools Solid understanding of clean architecture, automation, and modern DevOps practices More ❯
UK What you’ll be doing: Lead the refactor of a large legacy system into a modern, scalable cloud-native product Design and implement new architecture using AWS microservices, PostgreSQL, Node.js, React, and TypeScript Use AI-assisted tools such as OpenAI, LangChain, Claude, or Hugging Face to enhance efficiency, code quality, and testing Establish clean engineering practices, including CI/… future engineering capability What you’ll need: 7+ years’ experience building or refactoring large-scale applications (ERP or SaaS experience ideal) Strong technical background with Python, TypeScript, React, Node.js, PostgreSQL, and AWS Proven experience in greenfield development and system modernisation Interest or hands-on experience with AI-driven development tools Solid understanding of clean architecture, automation, and modern DevOps practices More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Harrington Starr
Java, or C# Proven track record of performance tuning in large-scale, distributed systems Expertise in profiling tools, memory management, and debugging complex performance issues Strong database optimisation skills (Postgres, SQL Server, or similar) Experience with containerised and cloud-native environments ( Kubernetes, Docker, AWS, Azure ) Familiarity with load testing tools (e.g. k6, JMeter, Gatling) and monitoring solutions Excellent communication skills … shape system architecture and mentor future engineering leaders Flexible Hybrid working in Central London up to £85,000 basic plus market leading bonus structures Tech Stack: Python, Java, C#, Postgres, Kubernetes, Docker, AWS, Azure, k6, JMeter, Gatling If you’re passionate about pushing the boundaries of performance engineering and building software that scales effortlessly, we’d love to hear from More ❯
Years of Experience: 3- 5+ years Skills: Go, Java, Git, REST Web Services, Jenkins, NoSQL, Postgres/ql Based in London Victoria or Burgess Hill Enthusiastic, diligent Senior Golang Software Engineer to work on the global Loyalty and Benefits platform in American Express. The candidate should have excellent soft skills, strong technical ability with an extensive passion to learn. A … engineering methodology (Agile, incl Scrum, Kanban, SAFe, Test-Driven Development (TDD), Behavior Driven Development (BDD) and Waterfall) Knowledge of any or all of the following technologies is desired: Kafka, Postgres, Golang, Git, gRPC, Docker, GraphQL · Experienced in continuous integration (CI), continuous deployment (CD) and continuous testing (CT), including tools such as Jenkins, Rally and/or JIRA and version control More ❯
Years of Experience: 3- 5+ years Skills: Go, Java, Git, REST Web Services, Jenkins, NoSQL, Postgres/ql Based in London Victoria or Burgess Hill Enthusiastic, diligent Senior Golang Software Engineer to work on the global Loyalty and Benefits platform in American Express. The candidate should have excellent soft skills, strong technical ability with an extensive passion to learn. A … engineering methodology (Agile, incl Scrum, Kanban, SAFe, Test-Driven Development (TDD), Behavior Driven Development (BDD) and Waterfall) Knowledge of any or all of the following technologies is desired: Kafka, Postgres, Golang, Git, gRPC, Docker, GraphQL · Experienced in continuous integration (CI), continuous deployment (CD) and continuous testing (CT), including tools such as Jenkins, Rally and/or JIRA and version control More ❯
Years of Experience: 3- 5+ years Skills: Go, Java, Git, REST Web Services, Jenkins, NoSQL, Postgres/ql Based in London Victoria or Burgess Hill Enthusiastic, diligent Senior Golang Software Engineer to work on the global Loyalty and Benefits platform in American Express. The candidate should have excellent soft skills, strong technical ability with an extensive passion to learn. A … engineering methodology (Agile, incl Scrum, Kanban, SAFe, Test-Driven Development (TDD), Behavior Driven Development (BDD) and Waterfall) Knowledge of any or all of the following technologies is desired: Kafka, Postgres, Golang, Git, gRPC, Docker, GraphQL · Experienced in continuous integration (CI), continuous deployment (CD) and continuous testing (CT), including tools such as Jenkins, Rally and/or JIRA and version control More ❯