U

Uni Systems

European systems integration and ICT services

Java Engineer

Full-TimePosted on 10/16/2026
No salary listed
Mid
Bachelor's
Athens, Greece
Hybrid
Software EngineeringBackend Engineering

About the job

Requirements
  • 3+ years of professional experience in software development, including at least 2 years of hands-on experience with Java-based solutions such as Java EE, Spring Framework, Spring Boot, and Spring Data.
  • Good knowledge of Java, object-oriented programming, and dependency injection.
  • Good understanding of ORM frameworks such as Hibernate or EclipseLink, and JPA.
  • Hands-on experience with RESTful web services.
  • Good understanding of design patterns and software development best practices.
  • Familiarity with authentication and authorization standards such as OAuth2 and JWT.
  • Experience with code quality practices, automated testing, and test coverage.
  • Good knowledge of relational databases, preferably Oracle.
  • Experience with Java EE application servers such as WebLogic or WildFly.
  • A university/college degree in Computer Science or a related field, or equivalent professional experience.
Responsibilities
  • Work as part of a development team on the analysis, design, and implementation of Java-based solutions for customers.
  • Develop, maintain, and enhance existing software applications, identifying areas for improvement and modification.
  • Collaborate with client and internal teams to understand and implement business requirements.
  • Produce and maintain technical and system documentation.
  • Contribute to technical analysis and implementation of solutions, working alongside more experienced team members when needed.
  • Participate in code reviews, testing, and troubleshooting to contribute to the quality of delivered software.
  • Collaborate with the team and share knowledge.
Desired Qualifications
  • Experience with SOAP.
  • Experience with frontend development frameworks such as React.
  • Familiarity with distributed and modular architectures.
  • Familiarity with Elasticsearch.
  • Familiarity with enterprise integration frameworks such as Apache Camel.
  • Familiarity with Jenkins and CI/CD practices.
  • Experience with PL/SQL.

About the company

U

Uni Systems

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Website

Uni Systems provides ICT services with a focus on systems integration for enterprises. It designs and implements technology solutions by coordinating hardware, software, and services to meet client goals, often spanning consulting, deployment, and managed support across end-to-end IT projects. Originating as one of Greece’s first IT firms, it built a long track record in establishing computer systems at universities and expanded through acquisitions and cross-border operations. Today, part of the Quest Group, Uni Systems differentiates itself through its extensive European footprint, history of strategic acquisitions (e.g., Intelli Solutions) and minority stake in Compellio, and its ability to deliver large-scale IT programmes across more than 20 countries. The company’s goal is to be a leading ICT corporation in Europe, helping organizations modernize and connect their technology ecosystems through integrated solutions and services.

Company Size

501-1,000

Company Stage

N/A

Total Funding

N/A

Headquarters

Athens, Greece

Founded

1964

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Simplify Jobs

Simplify's Take

What believers are saying

  • EU Commission’s 326 million euro cybersecurity framework expands recurring services revenue through 2029.
  • NATO’s five-year CSDM selection opens task orders across identity, endpoint, cloud, and analytics.
  • Compellio and PROBOTEK investments deepen blockchain, IoT, and drone offerings for 2026 expansion.

What critics are saying

  • EUCYBERSAFE depends on Unisys-led consortium execution; failure damages Uni Systems’ Brussels credibility by 2029.
  • NATO CSDM awards in 2026 create delivery pressure across five cyber lots immediately.
  • Competing integrators like Wavestone and Unisys can compress margins and marginalize Uni Systems.

What makes Uni Systems unique

  • Quest-backed Uni Systems won EUCYBERSAFE Lot 1, spanning 2025-2029 EU cybersecurity operations.
  • Uni Systems joined Microsoft Fabric Featured Partners on 2025-10-09, signaling enterprise cloud credibility.
  • Uni Systems earned Microsoft Azure AI specialization in 2025, rare among regional integrators.

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Benefits

  • Health Insurance
  • Hybrid Work Options
  • Meal Benefits
  • Training Programs
  • Employee Discounts

Company News

i-Game Project
Apr 9th, 2025
Uni Systems leads the i-Game project to Beyond-Expo 2025

The "i-Game" project was notably presented by its partner Uni Systems at Beyond-Expo 2025, that was held in Athens from April 4th to 6th.

Silicon Luxembourg
Sep 17th, 2024
Uni Systems Acquires Stake In Compellio - Silicon Luxembourg

European IT provider Uni Systems has acquired a minority stake in the Luxembourg deeptech company Compellio to enhance its presence...

Uni Systems
Jul 5th, 2024
Our History | Uni Systems

It was in 1964 when Constantinos Doxiadis, the visionary architect and one of the most prolific and influential postwar urban planners, with international acclaim that extended far beyond Greece and the European borders, introduced computer technology in Athens to support his vision of Ekistics, the interdisciplinary science of human settlements.  Sixty years later, Doxiadis Associates Computer Center has evolved into modern Uni Systems, and, today, we commemorate our heritage while moving forward with a vision to digitally improve societies around us.  Constantinos Doxiadis and his colleagues, the pioneers of their era, worked hard fueled by unwavering determination and commitment to their vision. They managed to always stay one step ahead of their time, introducing new technologies and innovative methods of work, that were later adopted by their competitors. Sixty years of innovation, inspiration, dedication to excellence, and respect for our people, have led to the transformation of DACC into the multinational Uni Systems of today.  This page is dedicated to this exciting journey, highlighting the most significant milestones of the company, in parallel with the major historical events that marked each period. Committed to acknowledging our heritage, we draw upon the lessons of history to address the challenges of tomorrow.

FF News
Mar 14th, 2023
Finastra And Uni Systems Extend Collaboration To Enable Financial Institutions To Meet New Risk Management Regulation

Finastra and Uni Systems have extended their partnership to help financial institutions in the Adriatic, Central and Southeast Europe regions comply with the Basel Committee’s Fundamental Review of the Trading Book (FRTB) reporting requirements, effective in January 2023. Under the new agreement, Uni Systems can offer its customers Vector Risk’s Trading Book Market & Credit Risk Solution, via Finastra’s FusionFabric.cloud and hosted on Microsoft Azure, for cloud-based automation of credit and market risk calculations in the trading book.The FRTB is a comprehensive suite of rules proposed by the Basel Committee on Banking Supervision (BCBS) that capital banks must hold against market risk exposures. It expands the current market risk framework to ensure that internal models used by banks to calculate capital requirements efficiently cover risks, and to simplify comparisons of risk-based capital ratios across banks.“Complying with regulations such as the FRTB is a big undertaking for banks, particularly when timeframes are tight and IT systems cannot support the necessary changes,” said Benoit Riquet, CPO, Treasury & Capital Markets at Finastra. “By partnering with Uni Systems and offering Vector Risk’s solution via our platform, more banks will benefit from ongoing upgrades and regulatory compliance, quickly, with reduced project risk and without the need for new IT infrastructure.”Trading Book Market & Credit Risk is a SaaS solution providing out-of-the-box connectivity with Finastra’s treasury and capital market solutions, standard market data packages and institutions’ internal data. It automates the standardized approach for counterparty credit risk (SA-CCR), Value at Risk (VaR), Potential Future Exposure (PFE), credit valuation adjustment (CVA) and others that will follow. Uni Systems provides strategic guidance, project management and technical execution.“Vector Risk’s solution on Finastra’s platform enables institutions to easily comply with market and credit risk regulations, while improving their regulatory and internal reporting metrics,” said Constantine Serros, Banking & Financial Services Business Unit Director and BoD member at Uni Systems