Full Stack Developer Jobs in Wales, United Kingdom

Innovation Team at Innocraft builds privacy‑first analytics capabilities for Matomo, leveraging AI‑powered tools to prototype and deliver new product features. The Full Stack Engineer designs, prototypes, and ships backend (PHP/Python) and frontend (JavaScript/Node.js) innovations, owns end‑to‑end delivery, and collaborates directly with the CTO and senior engineers.

Full Stack Developer on the UKCLO team at Barclays Capital Securities, driving the modernization of wholesale lending platforms by replacing legacy processes with a streamlined digital workflow. The role involves designing, coding, and testing Java/SpringBoot back‑end services and React/Redux front‑ends, collaborating with product managers, designers, and cross‑functional engineers to deliver secure, high‑performance solutions.

Barclays Capital Securities’ Full Stack Engineer team builds robust backend services and APIs to power financial platforms. The role focuses on designing scalable Python microservices, deploying them on cloud environments, and ensuring secure, high‑performance code.

Design, develop, and improve software for Barclays Capital Securities, focusing on backend with Python or Java, frontend with React, and cloud infrastructure. Collaborate with product managers, designers, and engineers to deliver scalable, secure, and high‑quality solutions.

Full Stack Developer role at Barclays Capital Securities focuses on designing, developing, and improving software solutions that provide business, platform, and technology capabilities for customers and colleagues. Responsibilities include delivering high‑quality software using industry‑aligned programming languages, frameworks, and tools, ensuring code scalability, maintainability, and performance.

Full Stack Engineer role focused on designing, developing, and enhancing software solutions using modern backend and frontend technologies. The position requires strong coding practices, collaboration across teams, and a commitment to secure, scalable, and maintainable code.

Full-Stack Engineer (Vice President) At BNY, our culture allows us to run our company better and enables employees’ growth and success. As a leading global financial services company at the heart of the global financial system, we influence nearly 20% of the world’s investible assets.

Full Stack Developer (18‑Month FTC) at Freshfields in Manchester. Join the Application Platforms team within the IT organisation’s Technology tower, focusing on systems development, integration, and support of key applications such as iManage Work v10, Intapp, CAM, and custom solutions.

Mark43 seeks a Full-Stack Engineer to build resilient software for public safety agencies worldwide. The role focuses on shipping features that help first responders save lives, integrating AI-assisted workflows, and improving core systems.

Custody Engineering Pods at BNY Mellon build secure, scalable financial systems. As a Full Stack Engineer you design and implement Java backend services and micro‑services, contribute to Angular front‑ends, and own end‑to‑end delivery including testing, CI/CD, deployment and observability.

Full Stack Engineer at NatWest Group’s Manchester team, building scalable, observable platform services. The role designs, develops, and tests end‑to‑end software using React, Node.js, and AWS tools, while applying SRE principles and monitoring with Prometheus and Grafana.

Full-Stack Development Team at BNY Mellon, building distributed microservices and AI‑enabled financial solutions. The role leads engineering teams, owns end‑to‑end delivery, and drives observability, security, and cloud adoption.

Full Stack Developer role at Corpay within International Vehicle Payments line, based in Walsall or Swindon. Responsible for end‑to‑end product development using Java, Ruby on Rails, AngularJS, ReactJS, and mobile platforms.

CHEP is a global logistics company moving goods worldwide using a sustainable share‑and‑reuse model. As a Full Stack Developer you will design and build complex software solutions that improve supply‑chain efficiency for Brambles and its customers.

Rocket Science Group builds the platform and server infrastructure that powers global game rollouts. The Full-Stack Engineer will design, implement, and evolve scalable backend solutions, collaborating with cross‑functional teams to ensure high‑performance, resilient services for partner games.

Full Stack Engineer at LDMS, a fintech in Cardiff, hybrid. Own shared foundation: component library, backend modules, SDKs, architecture.

Full Stack Engineer on Monzo’s Engineering team, building the in‑house banking platform that powers personal and business accounts, payments, and financial crime prevention. Day‑to‑day you’ll collaborate with product, design, and data teams to deliver resilient Go services and React web experiences, while scaling distributed systems on Kubernetes and AWS. Based in Cardiff or London with flexible remote options, you’ll work on core banking, payments, or platform squads, contributing to open‑source projects and driving customer‑centric innovation.

We are seeking a versatile Full Stack Engineer to join our team and contribute to both frontend and backend development of our platform. In this role, you will work across the entire technology stack, collaborating with UI/UX designers, architects, and other developers to build cohesive end-to-end features and functionality.

Burendo’s Full Stack Engineer supports and enhances a diverse range of applications and ecosystems, operating within an L2/L3 support function to ensure reliability of business‑critical systems. The role involves owning BAU operations, contributing to incident resolution, and participating in a rostered out‑of‑hours support rota.

UKI Platform and Enablement Super Tribe at Power Leisure Bookmakers Ltd drives AI innovation across Flutter UK & Ireland, building intelligent systems that shape the future of our platform and customer experience. The Full Stack Engineer owns features end‑to‑end, designing Python FastAPI backends, React/TypeScript frontends, and integrating LLM capabilities to deliver AI features users love.