Backend Developer Junior

4 days ago

Belgrade, Central Serbia Red Black Tree Full time €70,000 - €120,000 per year

Red Black Tree is a Serbia-based software development company with over 10 years of experience, delivering custom software solutions to clients across the EU and the USA.

We specialize in end-to-end software development, covering every phase of a project—from concept and architecture to development, testing, maintenance, and IT consulting. Our solutions are scalable, secure, and tailored to business needs.

With expertise across diverse industries, we deliver impactful solutions in Energy & EV Charging, Healthcare, Automotive, AI & ML, and EdTech.

Today, with a team of approximately 70 dedicated professionals, we have expanded our presence with offices in Belgrade and Čačak, and we continue to grow.

We're Hiring: Backend Developer Junior (Python)

If you're eager to grow your backend skills, enjoy solving technical challenges, and are excited about working with Python, this could be the ideal role for you

What We're Looking For:

  • University degree in computer science (or equivalent experience).
  • At least 1 year of professional experience as a Backend Python developer.
  • Experience with relational and NoSQL databases.
  • Experience with building REST APIs.
  • Experience with Linux/Unix operating systems.
  • Experience with code versioning tools (e.g. Git).
  • Familiarity with Backend standards and Web technologies.
  • Interest or experience in artificial intelligence, machine learning, or LLM applications is considered a strong asset.
  • Understanding of data processing, ETL pipelines, and modern data warehousing concepts is considered a strong asset.
  • Experience with a Flask framework is a plus.
  • Proactivity and self-determination in every aspect of work.
  • Readiness to learn new skills and grow with the company.

Your Responsibilities:

  • Write efficient, scalable, and maintainable Backend code using Python.
  • Communicate effectively about any issues, challenges, or potential problems, ensuring timely and transparent problem-solving.
  • Maintain a broad perspective on project goals, ensuring that your work aligns with the overall objectives of the team and the company.
  • Collaborate closely with Frontend developers and other team members to create a seamless user experience.
  • Participate in code reviews, offering constructive feedback to improve code quality and maintain high standards.

What We Offer:

  • Remote & Hybrid Work – Choose what works best for you.
  • Flexible Working Hours – Work at your most productive time.
  • Cutting-edge Equipment – The tools you need to succeed.
  • Health & Wellbeing – We care about your work-life balance.
  • Support for New Parents – Because family comes first.

How to apply:

Now that you know about us and the position we are trying to fill, we would like to learn more about you. Send us your CV at and we will quickly reply.

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