Full-Stack Developer (Java) - Open Reply

Reply Ltd; City of Westminster; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading technology company in the UK is seeking a Technical Lead to deliver full-stack development across digital platforms. You'll leverage strong Java and Spring skills, work on both front-end and back-end tasks, and contribute to client projects with a focus on innovative solutions. Minimum of 3 years of experience in full-stack development is required. The role involves hands-on coding, collaboration with technical teams, and occasional UK client travel. This opportunity promotes diversity and inclusion in the workplace.

Qualifications

• Minimum 3 years of hands-on experience as a Full Stack Engineer or Developer.
• Strong back-end development skills with Java and Spring Framework.
• Proficient in building and consuming REST APIs and SQL databases.
• Experience with TDD/BDD, CI/CD pipelines, and collaborative workflows.

Responsibilities

• Hands-on full-stack development across web and digital platforms.
• Design, build, and maintain Java back-end services.
• Develop responsive, accessible UIs using modern JavaScript frameworks.
• Collaborate with Product, Design, and Architecture teams.

Skills

Java

Spring Framework

React

Next.js

React Native

Flutter

TDD

CI/CD

Docker

Terraform

Tools

Jenkins

Azure

AWS

GCP

Job description

Technical Leads to deliver iterative changes across multiple platforms. You'll work across both front-end and back-end development, leveraging strong Java and Spring skills. Experience with React, Next.js, React Native, or Flutter is highly valued, and knowledge of AI-related technologies is a strong differentiator. The role is based in London with occasional UK client travel.

Responsibilities

• Hands‑on full‑stack development across web and digital platforms.
• Design, build, and maintain Java back‑end services and enterprise frameworks.
• Develop responsive, accessible UIs using modern JavaScript frameworks (e.g., React, Angular).
• Implement and integrate RESTful APIs and microservices.
• Collaborate with Product, Design, and Architecture to deliver robust technical solutions.
• Apply TDD/BDD for high‑quality, testable, maintainable code.
• Ensure security, performance, and maintainability; contribute to CI/CD and cloud deployments.
• Support releases, documentation, production fixes/enhancements.
• Drive innovation (including AI).

About the Candidate

• Minimum 3 years of hands‑on experience as a Full Stack Engineer or Developer.
• Strong back‑end development skills with Java, including experience with Spring Framework, JAX‑RS/JAX‑WS, and JPA/Hibernate.
• Proficient in building and consuming REST APIs and working with relational databases using SQL.
• Experience with engineering and DevOps practices, including TDD/BDD, CI/CD pipelines (e.g., Jenkins), and collaborative workflows using Git/GitHub.
• Skilled in deploying and maintaining applications in cloud environments (Azure or AWS required; GCP experience is beneficial).
• Experience with containerisation and infrastructure tools such as Docker and Terraform.
• Familiarity with unit testing frameworks (e.g., Jasmine, Karma).
• Applied knowledge of modern front‑end frameworks such as React or Angular is beneficial.

Equal Opportunity

Reply is an Equal Opportunities Employer and committed to embracing diversity in the workplace. We provide equal employment opportunities to all employees and applicants for employment and prohibit discrimination and harassment of any type regardless of age, sexual orientation, gender, identity, pregnancy, religion, nationality, ethnic origin, disability, medical history, skin colour, marital status or parental status or any other characteristic protected by the Law. Reply is committed to making sure that our selection methods are fair to everyone. To help you during the recruitment process, please let us know of any Reasonable Adjustments you may need.

About Open Reply

Open Reply is the Reply Group company specialising in E‑commerce and Digital Experience. We work with clients who are looking to incorporate E‑commerce solutions, or wanting to migrate from their current platform to something better. As well as our specialist skills in e‑commerce and systems integration, we provide the digital transformation wrap that makes your customer journey a delight. Our experience is drawn from consultants working across multiple industries, platforms and cultures. Working closely with our specialist partners Liferay and Shopware, Open Reply are your tailor‑made solution for cutting‑edge services that are based on the best‑of‑breed across e‑commerce, digital, web, apps and flexible platform design.

Role Overview

As a full‑stack developer, you will join our core delivery team to build and enhance Web, e‑commerce, and Mobile solutions, collaborating with Technical Project Managers, Architects, and.