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INTERNSHIP - Java Backend Developer

  • REQ-10106966
  • 22/12/2025
  • Trainee
  • Luksemburg, Luksemburg
  • ING Bank


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To strengthen our IT department, ING Luxembourg is looking for a motivated intern to join the Savings & Investments team. This internship offers a unique opportunity to gain hands-on experience in backend development and DevOps practices within an international environment.

About the Internship

You will contribute to the design, development, and maintenance of secure and resilient backend applications. You will work on innovative projects related to our global investment platform and collaborate with experienced engineers using modern technologies and Agile methodologies.

6-month internship beginning in January2026.Please note that only students who can provide a valid internship agreement (school convention) will be considered.

What You’ll Do

  • Design/implement resilient applications with/without the help of an architect
  • Develop/maintain backend applications following ING standards
  • Write clean, tested code and perform unit testing, integration testing & performance testing
  • Collaborate with Ops engineers to manage the full software lifecycle
  • Embed security best practices into every stage of development & keep your assets compliant from a security point of view
  • Troubleshoot and resolve production issues
  • Analyse defects to validate solution design quality
  • Review technical and functional specifications
  • Perform code/security reviews
  • Communicate and escalate issues when necessary

Profile

  • Basic knowledge of Java and ideally Spring Boot.
  • Interest in DevOps, CI/CD, and containerization (Docker, Kubernetes).
  • Strong experience with microservices architecture and API management
  • Familiarity with Azure DevOps, DBMS and SQL (Oracle, PL/SQL) is a plus.
  • Basic knowledge in testing tools (e.g. JUnit, Selenium, JMeter,…) and TDD/BDD
  • Basic Knowledge of Agile methodologies
  • Good command of English (French is a plus).

Soft Skills

  • Passion for technology and innovation
  • Motivation and willingness to learn.
  • Strong execution and result oriented
  • Ability to follow structured tasks and clear instructions
  • Analytical mindset and problem-solving ability.

Your working environment

With over 900 employees in the Grand Duchy and thanks to the combination of our local presence and the strength of a robust multinational like ING, we offer our business customers a wide range of solutions through the channel of their choice.

ING is a global bank with a strong European base. 53,000 employees serve around38.4 million customers, corporateclientsand financial institutions in over 40 countries. Operating in the Grand Duchy of Luxembourg since 1960 as a universal and accessible bank, our products include savings, payments, investments,loansand mortgages for private banking customers, whom we sever serve online and through our network of branches. For our Wholesale Banking clients, we provide lending, sustainable finance, payment & cashmanagementand fund services.

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W ING chcemy, aby każdy mógł w pełni wykorzystać swój potencjał. Tworzymy inkluzywną kulturę, w której każdy ma szansę na rozwój i wpływ na naszych klientów oraz społeczeństwo. Zawsze wspieramy różnorodność, równość i integrację. Nie tolerujemy żadnej formy dyskryminacji, czy to z powodu wieku, płci, tożsamości płciowej, kultury, doświadczenia, religii, rasy, niepełnosprawności, obowiązków rodzinnych, orientacji seksualnej lub czegokolwiek innego. Jeśli potrzebujesz wsparcia lub dostosowania podczas procesu rekrutacji lub rozmowy, skontaktuj się z rekruterem wskazanym w ogłoszeniu. Z przyjemnością pomożemy Ci, aby proces był sprawiedliwy i dostępny. Dowiedz się więcej o naszym zaangażowaniu na rzecz różnorodności i integracji tutaj.

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  • Trainee, Luksemburg, Luxembourg, LuksemburgUsuń

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