Full-Stack Engineer (Java)

Uni Systems is a European ICT company founded in 1964, providing a wide range of digital transformation products and services to financial institutions, public organizations, telecom operators, and enterprises. It is a member of the Quest Group of Companies and operates internationally with a significant presence in several European countries.

Uni Systems

Employee count: 1001-5000

Belgium only

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Description

At Uni Systems, we are working towards turning digital visions into reality. We are continuously growing and we are looking for a Full-Stack Engineer (Java) to join our UniQue team.

What will you be doing in this role?

Design and development of software components and building blocks using suitable back-end components and frameworks (Java Spring, JPA).
Design of application APIs using suitable frameworks (REST, Swagger).
Design and implementation of application integration with corporate IAM services for authentication and authorization purposes.
Delivery through a CI/CD pipeline.
Implementation of code according to a technical analysis.

Requirements

What will you be bringing to the team?

Master’s degree in IT with minimum 13 years of relevant experience, including proven and recent coding experience in Java web application development (Java Spring, Hibernate).
At least 6 years of experience with Java web application development, including 3 years with Java Spring and REST API development.
Minimum 3 years of experience in developing complex information systems.
Minimum 3 years of frontend development using Angular or Kendo UI.
Good knowledge of UI/UX for web applications, including responsive design.
At least 2 years of experience with Agile software development practices (refactoring, test-driven development, user story modeling).
Very good knowledge of web application design, in particular Java back-end components and frameworks (Spring Framework, Spring Data, Spring for Web Services, JPA, Spring Security).
Experience with JEE applications.
Experience with CI/CD pipelines, containerization (Docker), Git, Maven, Jenkins.
Familiarity with Atlassian tools (Bitbucket, Jira, Confluence) and development IDEs (VS Code or JetBrains IDEs).
Good knowledge of JUnit.
Good knowledge of Enterprise Architecture, Java application servers (Oracle WebLogic), relational DBMS (Oracle DB), SQL, and UML modeling methods.
Knowledge of interoperability technologies (web services, REST APIs) and security concepts, including OAuth.
Knowledge of SCRUM methodology is an advantage.
Fluent in English (at least B2).

At Uni Systems, we are providing equal employment opportunities and banning any form of discrimination on grounds of gender, religion, race, color, nationality, disability, social class, political beliefs, age, marital status, sexual orientation or any other characteristics. Take a look at our Diversity, Equality & Inclusion Policy for more information.

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About the job

Apply before

Apr 01, 2026

Posted on

Jan 31, 2026

Job type

Full Time

Experience level

Senior

Location requirements

Belgium

Hiring timezones

Belgium +/- 0 hours

About Uni Systems

Learn more about Uni Systems and their company culture.

View company profile

Uni Systems, born in 1964 as the first Greek-owned IT company, embarked on a journey to navigate the evolving landscape of information and communication technology. What began as a pioneering venture by Konstantinos Doxiadis has steadily grown into one of the most dependable ICT solutions and services providers in the European market. Over its extensive history, spanning more than half a century, Uni Systems has consistently demonstrated a commitment to leading the digital transformation for its clients. The company's evolution saw a significant reshaping in 2007 through a merger involving the 'old' Uni Systems, Decision Systems Integration, and Info-Quest's Solution & Business Applications Business Unit, which forged the 'new' Uni Systems with a strategic focus on the Systems Integration marketplace.

Today, Uni Systems stands as a prominent member of the Quest Group of Companies, a testament to its enduring presence and adaptability. The company has significantly invested in its international reach, expanding its operations across various geographies and industries. With a strong foothold in Greece and established business entities in key European locations including Belgium, Luxembourg, Italy, Romania, and Spain, Uni Systems serves a diverse clientele of over 200 customers in more than 20 countries. This international presence is supported by a dedicated workforce of over 1,800 skilled ICT professionals. Uni Systems prides itself on a substantial and successful track record in delivering large-scale, mission-critical, and reliable solutions across vital sectors such as Banking & Finance, Enterprise & Utilities, Public, and Telecommunications, as well as for EU Institutions and Agencies. The company's dynamic portfolio encompasses a wide array of solutions, from enterprise infrastructure to specialized vertical business applications, alongside innovative solutions in emerging technologies. Uni Systems continues to be driven by its mission to stimulate development and accelerate progress by seamlessly connecting business with information technology, aiming to be one of the most reliable ICT systems integrators in the European markets.

Tech stack

Learn about the tools and technologies that Uni Systems uses to build, market, and sell its products.

View tech stack

.NET

JavaScript

Python

Java

PHP

Ubuntu

Linux

IBM Watson

WooCommerce

Font Awesome

Google Analytics

8 more

Uni Systems employees can create an account to update this tech stack.

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