Uni Systems S.A. logo

Full-Stack Engineer (Java)

Job Overview

Location

Brussels, Brussels, Belgium

Job Type

Full-time

Category

Full-Stack Engineer

Date Posted

March 11, 2026

Full Job Description

đź“‹ Description

  • • Uni Systems is at the forefront of transforming digital visions into tangible realities, and we are actively seeking a highly skilled and experienced Full-Stack Engineer with a specialization in Java to become an integral part of our dynamic UniQue team.
  • • In this pivotal role, you will be instrumental in the end-to-end design, development, and implementation of sophisticated software components and building blocks. Your expertise will be crucial in crafting robust back-end solutions utilizing established frameworks such as Java Spring and JPA, ensuring the creation of scalable and efficient applications.
  • • A significant aspect of your responsibility will involve the meticulous design of application APIs, employing modern frameworks like REST and Swagger to facilitate seamless communication and integration between different system components. This includes ensuring that APIs are well-documented, versioned, and adhere to industry best practices for maintainability and usability.
  • • You will play a key role in designing and implementing intricate application integrations with corporate Identity and Access Management (IAM) services. This involves ensuring secure and reliable authentication and authorization mechanisms are in place, safeguarding sensitive data and system resources.
  • • The role demands a commitment to modern software delivery practices, with a strong emphasis on leveraging CI/CD pipelines. You will be responsible for ensuring that code is developed, tested, and deployed efficiently and reliably through automated processes, contributing to faster release cycles and improved software quality.
  • • Your day-to-day activities will involve the precise implementation of code based on detailed technical analysis, translating complex requirements into functional and high-quality software solutions. This requires a deep understanding of software architecture, design patterns, and coding best practices.
  • • You will contribute to the entire software development lifecycle, from initial concept and design through to development, testing, deployment, and maintenance. This includes actively participating in code reviews, providing constructive feedback to peers, and mentoring junior engineers.
  • • The position requires a proactive approach to problem-solving, identifying and resolving technical challenges that may arise during the development process. You will collaborate closely with cross-functional teams, including product managers, designers, and other engineers, to ensure the successful delivery of projects.
  • • You will be expected to stay abreast of emerging technologies and industry trends, evaluating their potential application to enhance our existing systems and processes. This includes exploring new frameworks, tools, and methodologies that can improve development efficiency and application performance.
  • • A key focus will be on building maintainable, scalable, and performant web applications. This involves writing clean, well-documented, and efficient code, adhering to established coding standards and architectural guidelines.
  • • You will contribute to the continuous improvement of our development processes and tooling, identifying opportunities for optimization and implementing best practices to enhance team productivity and software quality.
  • • The role offers the opportunity to work on challenging and impactful projects that directly contribute to Uni Systems' mission of turning digital visions into reality, providing a stimulating and rewarding career path for a dedicated Full-Stack Engineer.
  • • You will be involved in the full spectrum of software engineering, from front-end user interface development to back-end logic and database management, ensuring a cohesive and robust application experience.
  • • This position is ideal for an engineer who thrives in a collaborative environment, enjoys tackling complex technical problems, and is passionate about delivering high-quality software solutions.
  • • You will be a key contributor to the technical direction and architectural decisions for various projects, influencing the future of our digital offerings.
  • • The role emphasizes a strong understanding of both user experience and technical implementation, ensuring that the applications we build are not only functional but also intuitive and engaging for end-users.

Skills & Technologies

Java
Angular
Spring
Docker
Jenkins
Full Stack
Onsite
Degree Required

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Uni Systems S.A. logo
Uni Systems S.A.
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About Uni Systems S.A.

Uni Systems is a leading IT solutions and services provider based in Greece. The company specializes in developing and implementing integrated information systems for both the public and private sectors. Their core business areas include digital transformation, cloud services, cybersecurity, and the development of custom software solutions. Uni Systems focuses on delivering innovative and reliable technology solutions that enhance operational efficiency and support the strategic goals of its clients across various industries such as finance, telecommunications, and public administration. They are committed to leveraging cutting-edge technologies to drive digital progress and provide high-value services.

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