Cardiff, Wales, United Kingdom Hybrid / WFH Options
JR United Kingdom
programming proficiency in Python, C++, and Java (Quant/Trading grade codebases). Expertise in modern web development with React, Node.js, MongoDB, and SQL (Postgres, MySQL). Strong understanding of Git/GitHub, CI/CD workflows, code branching strategies, and code ownership. Prior work in a fintech, hedge fund More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
Aforza Ltd
Google Kubernetes Engine. We use TypeScript across the board in both frontend and backend. Languages: TypeScript, SQL Frontend: React, Redux Backend: Nest.js, MikroORM Databases: PostgreSQL, Firestore Testing: Jest Infrastructure: Google Cloud Platform (GCP), Google Kubernetes Engine What You'll Do Develop new backend features on Aforza Studio Develop APIs in More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
Rocket Science
Experience and proficiency in one or more of the following: Backend Languages: C#, Golang, Java, Python, Kotlin, Rust Frontend Languages: React, NextJS, Typescript Databases: PostgreSQL, MySQL, MongoDB, NoSQL Infrastructure: Terraform, Docker, Kubernetes CI/CD: GitHub Actions, Jenkins, ArgoCD Agile: Experience with SDLC and Agile practices. Improvements: Demonstrated ability to More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
Aforza Ltd
Engine. We use TypeScript across the board in both frontend and backend. Frontend - TypeScript, React, Redux, Styled Components Backend - TypeScript, Nest.js, Node.js, MikroORM Databases - PostgreSQL, Google Cloud Firestore Cloud - GCP, Google Kubernetes Engine What You'll Do Develop new frontend and backend features on Aforza Studio Develop APIs in Node.js More ❯
Cardiff, South Glamorgan, United Kingdom Hybrid / WFH Options
Rocketscience
and proficiency in one or more of the following: Backend Languages: C#, Golang, Java, Python, Kotlin, and Rust Frontend Languages: React, NextJS, Typescript Databases: PostgreSQL, MySQL, MongoDB, and NoSQL Infrastructure: Terraform, Docker, and Kubernetes CI/CD: GitHub Actions, Jenkins, and ArgoCD Agile: Experience with the Software Development Lifecycle (SDLC More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
Rocketscience
hear from candidates who have experience and proficiency in one or more of the following: Languages: C#, Golang, Java, Python, Kotlin, and Rust Databases: PostgreSQL, MySQL, MongoDB, and NoSQL Infrastructure: Terraform, Docker, and Kubernetes CI/CD: GitHub Actions, Jenkins, and ArgoCD Agile: Experience with the Software Development Lifecycle (SDLC More ❯
Cardiff, South Glamorgan, United Kingdom Hybrid / WFH Options
Rocket Science Group
hear from candidates who have experience and proficiency in one or more of the following: Languages: C#, Golang, Java, Python, Kotlin, and Rust Databases: PostgreSQL, MySQL, MongoDB, and NoSQL Infrastructure: Terraform, Docker, and Kubernetes CI/CD: GitHub Actions, Jenkins, and ArgoCD Agile: Experience with the Software Development Lifecycle (SDLC More ❯
as well as internal systems, educational content tools and 3rd party integrations Role requirements At least 4 years' commercial experience in C# TypeScript, JavaScript Postgres Desirables Angular, React or Vue Azure DevOps & Git AWS SQL Server Familiarity with responsive layout and accessible design Unit/Functional Testing The Company The More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
JR United Kingdom
develop, and 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 More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
JR United Kingdom
develop, and 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 More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
JR United Kingdom
develop, and 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 More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
JR United Kingdom
Skills Knowledgeable in Kotlin/Java, Jetpack Compose, and the Android SDK Infrastructure as code (we use Pulumi) Relational databases such as MySQL/PostgreSQL Proficiency in writing and maintaining test suites Monitoring and observability tools, for example Grafana/Crashlytics What we offer A competitive salary and benefits package More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
Starling Bank
you do, that's great! Python Java, which makes up the majority of our backend codebase JavaScript, particularly React, which makes up our frontend Postgres and SQL AWS & GCP - we're cloud-native TeamCity for CI/CD (lots of teams are releasing code 15-20 times per day!) Terraform More ❯
DevSecOps principles (Shift Left, SCA, SAST) Experience with Linux, Bash scripting, and containerization tools (Docker, Kubernetes, OpenShift) Bonus Points If You Have: Familiarity with PostgreSQL Cybersecurity experience Why Join Us? Wellness & fitness packages Continuous education & certifications Paid time off & holidays Professional conferences & training Global team-building activities Access to co More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
JR United Kingdom
For Strong Java Expertise – 5-7 years of Java 11+ experience (currently using Java 21). SQL Database Proficiency – Strong experience with SQL databases (PostgreSQL preferred). Microservices & Cloud – Deep knowledge of microservices architecture, API design, and AWS . Betting, Gaming, or Big Data Background – Experience in real-time data More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
JR United Kingdom
architectures support observability, fault tolerance, and high availability. Guide the engineering team in data modelling, data access patterns, and efficient use of databases (MSSQL, PostgreSQL, MySQL). Work with data engineers to enable secure, efficient data movement between systems, including real-time and batch processing pipelines. Support analytics and reporting More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
JR United Kingdom
ll support with key tech decisions, architecture, project delivery and mentoring other Engineers in the team. Requirements: Deep experience with Python, TypeScript, React, AWS, PostgreSQL, and GenAI + Any experience with any other backend languages: Go, Elixir, Clojure, Ruby, C++, Haskell etc. Proven ability to lead projects (and teams) in More ❯
focus on backend development. Experience building analytics and marketing tools (e.g., dashboards, tracking systems, attribution models). Strong experience with Django (or Flask) and PostgreSQL . Solid understanding of data pipelines, event tracking, and API integrations . Proficiency in React, TypeScript, and frontend visualization frameworks (e.g., D3.js, Chart.js, Recharts) . More ❯
Windows Services, Web Services, ORM tools (e.g. Dapper, Entity Framework), Experience in using Git and containers. Strong knowledge of relational databases (Microsoft SQL Server, Postgres) Excellent communication skills, both verbal and written, to effectively convey technical information. A collaborative mindset, thriving in a team environment with constant cooperation and interaction. More ❯
production environments Experience with Linux systems , network configuration, and firewalls Familiarity with CI/CD pipelines and tools (GitOps, ArgoCD, Helm) Experience with MongoDB , PostgreSQL , Redis and secure back-end infrastructure Why Apply? Collaborate on secure, cutting-edge communication platforms Join a critical programme making a real-world impact More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
Mentmore
React, Git, and CI/CD pipelines Experience with .NET MAUI for mobile app development is a plus Strong background in relational databases, particularly PostgreSQLMore ❯
possible and manage it with Terraform. Services are written in C# (.NET 9) and deployed to ECS or Lambda via GitHub Actions. We use Postgres, SNS/SQS and Redis. We have good end-to-end test coverage and are confident in our deployments. What we are looking for: Back More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
JR United Kingdom
or similar) using TypeScript and integrating with APIs Proficient in modern CSS and utilising frameworks such as Tailwind Confidence working across the stack (Node.js, Postgres) all running in AWS Startup or 0→1 experience: ambiguity doesn’t scare you UK-based and able to work full-time Nice-to-Haves More ❯
Cardiff, Wales, United Kingdom Hybrid / WFH Options
Starling Bank
engineers, contribute to critical projects, and develop your skills in a rapidly evolving FinTech environment. You'll gain hands-on experience with Java, AWS, Postgres and other parts of our tech stack and have the chance to make a real impact on our security and customer experience. We're committed More ❯
for the next step in their career. The role would be primarily office based - 4 days per week in central London Key Experience React PostgreSQL or other relational database Experience in any of the following areas would be advantageous but is not a prerequisite Tailwind Node.js Next.js MongoDB EJS SaaS More ❯