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Full-Stack Developer Trainee (Internship)

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Onsite

Full-Stack Developer Trainee (Internship)

Threenitas

Full-Stack Developer Trainee (Internship)

Skills

SQL QueriesMobile DevelopmentNodeJava.NETSpring BootPostgreSQLMySQLJavascript

10 months ago

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Important information


Contract type:

Internship

Location:

Greece

Work mode:

Onsite

Published on:

15 October 2026

What they need


We are looking for a Full-Stack Developer to join our team as a trainee. Successful candidates will join our engineering team, a group of people focused on designing, implementing, and delivering amazing products directly to thousands of customers.

You will learn how to build Web based applications such as content-management platforms and Web API's supporting mobile apps and cloud-based solutions.

Requirements

We know that you will be a good fit for our team, if...

  • You have familiarity with Object-Oriented languages and university-level programming skills
  • You simply enjoy coding, regardless of the programming language
  • You have familiarity with any Database Management System( MySQL, PostgreSQL, SQL Server) and SQL
  • You have a special attention to detail and want to understand how technologies work and not just how they are used.
  • You have a problem solver mentality and understand that coding is a skill that requires practice to acquire.
  • You have already experimented with backend frameworks like .NET 5/6, Java Spring Boot, NodeJS and/or Javascript frameworks like Angular.
  • Undergraduate studies in Computer Science, Engineering, Mathematics, Physics or relevant field

Benefits

Threenitas S.A. is a software engineering company based in Athens.

At Threenitas we work directly with our clients to plan, design, and implement digital products & solutions.

Our strength lies in our ability to apply what we know and our eagerness to learn what we haven’t yet practiced. We love technology, gadgets and services, and we rejoice in putting them to the best of use for our client’s projects. We build on top of our deep knowledge of digital media and our solid engineering background, to realize our clients' vision and meet their practical goals.

We move across the digital divide boundary. Our technical expertise supplements our creative thinking, and acts as an amplifying factor, that supports successful delivery of our client's message. Our goal is to build projects that provide the ultimate digital experience for our audiences.

The Environment

All members of our team are professionals passionate with technology, who love exploring new products and services in order to stay on the cutting edge.

Any new team member should be interested in technology and demonstrate a keen interest in applying such technology as a means for improving people’s everyday lives. They will be encouraged to expand on ideas, play around with new technologies, develop themselves as professionals and develop fun applications that will be used by many.

Why interns

We are looking for talented students who aspire to learn and improve, show a strong desire to explore the digital world, and want to leave their mark while working on real-world problems.

Yet we do not limit the scope of our search only to internships. We invest in our people's improvement, and we offer access to structured training and seminars, while keeping everyone interested with challenges on projects that reach thousands of users. Any successful intern showing promise and desire for further development, will be offered a contract for full or part time employment, regardless of any future military service obligations. Our team operates in a flexible manner, and consists of members working either on premise or remotely, so we are open to both options.

If you want to experience a modern company culture, while working with successful professionals who understand your needs and worries, having previously walked in your shoes, do not hesitate to send us your CV.

Based on the company's policy on equality and non-discrimination, you need to avoid adding a photo, age and marital status to your CV or cover letter.

We respect your personal data and we are legal compliant following the General Data Protection Regulation (GDPR). The results of your evaluation, as well as your CV, are strictly confidential.

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