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Uni SystemsUS

Full-Stack Java Developer

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

Luxembourg only

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

What will you be doing in this role?

  • Work with subject matter experts to gather business requirements.
  • Perform analysis of existing processes and applications, and additional/new end user requirements.
  • Design applications and micro-services addressing these requirements.
  • Implement these applications and micro-services considering the technology stack.
  • Support existing microservices applications for different divisions.
  • Perform testing (unit test, integration test, system test, performance test) these applications and microservices.
  • Support the business during user acceptance testing and obtain business signoff.
  • Source code, configuration, and automated unit tests, checked in to the provided versioning system (Git), along with documentation (e.g., Javadoc and Asciidoc).
  • Test results, perform items related to the change management process (ServiceNow).
  • Prepare documentation, reporting, and change management related to these applications and microservices.
  • Engage in active participation in agile ceremonies.
  • Release preparation and release management.
  • Ensure all material is stored on the SharePoint environment for audit purposes.
  • Identify risks and liaise on issues related to changes.
  • Act as a change agent to help facilitate effective deployments/modifications to new and current industry practices.
  • Maintain customer relationships within different divisions to ensure smooth communication.

Requirements

What do you need to succeed in this position?

  • Bachelor’s degree in IT and minimum of 10 years of hands-on Java experience.
  • Experience personally writing and maintaining automated unit and integration tests for Java applications.
  • Hands-on development experience with Spring and Spring Boot, including persistence using JPA and Hibernate.
  • Experience using Git for team-based software development, including branches, pull requests or merge requests, and code review.
  • Experience writing SQL queries for relational databases and using XML, YAML and JSON in application development or configuration.
  • Hands-on experience with AI-agent-driven software development using at least one of GitHub Copilot, Claude Code or Codex. Experience must include agent-led implementation or modification of application code; code completion alone is insufficient.
  • Hands-on experience developing Angular frontend applications using TypeScript/JavaScript.
  • Advanced English (C1) communication skills (written and spoken).

Desirable

  • Experience with Apache Camel.
  • Experience with agile (Scrum) and DevSecOps.
  • Experience with continuous integration and continuous delivery pipelines, e.g., Azure Pipelines.
  • Experience with Infrastructure-as-Code, e.g., Terraform and containerized environments, e.g., Docker.
  • Experience with public cloud architectures, e.g., Microsoft Azure.
  • Experience with the development of microservices.
  • Experience in the financial services industry.
  • Experience with service management following ITIL.

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.

About the job

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Posted on

Job type

Full Time

Experience level

Education

Bachelor degree

Experience

10 years minimum

Location requirements

Hiring timezones

Luxembourg +/- 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.

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