Senior Java & React Fullstack Engineer - Shape the Future

Loop Future; Lisboa; On-site; EUR 60,000 - 90,000; Full time

Job summary

Loop Future is seeking a Senior Fullstack Developer to join a dynamic, international Tech Hub based in Lisbon. You will drive architectural decisions, mentor peers, and ensure quality through testing and best practices across the stack.

As a senior, you will work on back-end services with Java/Spring Boot and REST APIs, and front-end work with React/Next.js, while contributing to CI/CD and documentation. This role is based in Lisbon, with global collaboration and modern tooling.

Qualifications

• 5 to 8 years of professional software development experience.
• Strong back-end development experience with Java and Spring Boot.
• Experience designing and implementing REST APIs.
• Strong SQL knowledge and experience with relational databases such as MS SQL Server or equivalent.

Responsibilities

• Contribute to architecture decisions and technical design processes.
• Act as a technical reference and support high-quality engineering practices across the team.
• Perform code reviews and contribute to troubleshooting, bug fixing and code optimisation.
• Develop and maintain back-end services using Java and Spring Boot, including REST APIs and relational databases.
• Develop front-end solutions using React and Next.js.
• Write unit and integration tests and support testing methodologies across the development lifecycle.
• Contribute to CI/CD practices, GitHub workflows/actions and technical documentation.

Skills

Java

Spring Boot

REST APIs

SQL / Relational Databases

React

Next.js

Git

Unit & Integration Tests

DevOps / CICD

Maven

Documentation

Tools

GitHub

Job description

Loop Future is seeking a Senior Fullstack Developer to join a dynamic, international Tech Hub based in Lisbon. You will drive architectural decisions, mentor peers, and ensure quality through testing and best practices across the stack.

As a senior, you will work on back-end services with Java/Spring Boot and REST APIs, and front-end work with React/Next.js, while contributing to CI/CD and documentation. This role is based in Lisbon, with global collaboration and modern tooling.