C# Full-stack Developer

2 weeks ago

Ljubljana, Ljubljana, Slovenia Cosylab Full time €104,000 - €130,878 per year

Are you passionate about medical technology and ready to make a real impact on the lives of cancer patients? If you have strong experience in C# programming, enjoy working across both front-end and back-end development, and value the opportunity to work with an authentic and dynamic team, we want you to be a part of our journey towards transforming cancer treatment.

About the role

You will join our core application team, dedicated to developing innovative software solutions for cancer therapy. This groundbreaking projects combines distributed components and complex workflows, giving you a dynamic role where your work directly contributes to meaningful impact in radiation oncology.

Key tasks and responsibilities

  • Full stack development of medical software.
  • Participating in architecture design, risk analysis, code reviews, and overall teamwork.
  • Documenting and thoroughly testing your work.
  • Validating and verifying the work done by the other team members.

Required qualifications and skills

  • Proficiency in C# with 3+ years of professional experience.
  • Solid understanding of software design, programming techniques, relational databases (PostgreSQL), ORM, and computer science fundamentals.
  • Familiarity with source control (Git), CI/CD, code analysis, and other modern programming practices.
  • Developed communication skills and an open mind for discussion and team collaboration.

Education

  • B.Sc. in Computer Science, Physics, Electrical Engineering, Mathematics, or other related technical disciplines.
  • Fluency in spoken and written English.

Bonus points if you have:

  • Hands-on experience in WPF (or similar desktop frameworks) using the MVVM pattern.
  • Knowledge of other programming languages (Python).
  • Experience in AI development.

What we offer

  • Employment contract for an indefinite period with a six-month probationary period.
  • A work environment with flexible working hours and a hybrid work model.
  • Plenty of personal and professional growth opportunities combined with a competitive and periodically updated salary tailored to your skills, experiences, and results.
  • Interesting work full of challenges in an international working environment.
  • Opportunities to work abroad.
  • High-impact learning culture: regular in-house and external training sessions and a team of international professionals eager to help you grow.
  • Many recreational after-work activities, unlimited coffee, soft drinks, fruit, and other well-being goodies.
  • Cosylab events (Teambuilding, New Year's Party, … ).
  • Casual atmosphere with friendly faces where you can completely "be yourself."

You will fit perfectly if you share these values:

  • Think bold
    : We deliver exceptional solutions through courageous thinking, open communication, and the drive to continuously improve.
  • Be modest
    : We set our egos aside in actively listening, respecting one another, and embracing the diversity of experience and perspective across the company.
  • Work smart
    : We know we get more accomplished by working together, being accountable, focusing our efforts, and going the extra mile.
  • Enjoy life
    : We prioritize balance and positivity, nurturing personal wellness and celebrating successes.
  • Do good
    : We support one another and are passionate about solving difficult problems that ultimately help make the world a better place
    .

Apply latest by by Monday, 6 October 2025. Your application should include:

  • CV,
  • brief motivational letter and
  • potential recommendations or references.

We're looking forward to meeting You

The Cosylab Team

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