Data Science Intern - Zagreb
Working at Infobip means being part of something truly global. With 75+ offices across six continents, we’re not just building technology — we’re shaping how more than 80% of the world connects and communicates. As employees, we take pride in contributing to the world’s largest and only full-stack cloud communication platform. But it’s not just what we do, it’s how we do it: with curiosity, passion, and a whole lot of collaboration. If you're looking for meaningful work and challenges that grow you in a culture where people show up with purpose, this is your opportunity. Let’s build what’s next, together.
Wintership 2025
Now we are kicking off our 2026 Winter Internship program and are looking for graduate and final-year undergraduate students of technical faculties.
If you value a humble mentality, embrace a learn-by-doing approach, thrive in collaboration with diverse minds, and are ready to let your potential shine, this opportunity is perfect for you!
Being part of the Infobip Engineering department means working on an in-house developed product and delivering solutions globally.
Mentors will guide you through the internship program and after the internship program ends, you can get a chance to land your first job at Infobip.
Visit our internship landing page for more details about the program, or find out more about how we work by checking our Engineering Handbook.
What this role is all about:
Data Science Intern is responsible for analyzing large-scale telecommunications data to uncover patterns, anomalies, and actionable insights. You will explore massive datasets from distributed systems (ClickHouse, PostgreSQL, Elasticsearch), perform statistical analysis in Jupyter Notebooks, and build machine learning models. In this role, you will query billions of records, develop data pipelines, create visualizations that drive insights, and transform promising research into production-ready microservices deployed on multiple data centers
What you’ll do:
Build production-grade machine learning systems for large-scale telecommunications data analysis.
Work with Python, Jupyter Notebooks, and industry-standard libraries including Pandas, Polars, Prophet, Scikit-Learn, sentence-transformers, and Darts for time series forecasting and pattern recognition.
Query and analyze massive datasets from distributed systems including ClickHouse clusters, PostgreSQL databases, DuckDB and Elasticsearch, learning end-to-end data engineering workflows
Contribute to research-to-production pipelines: from exploratory data analysis in notebooks to deploying FastAPI/Flask microservices that process millions of events daily.
Write production-ready, testable code following clean code principles, with emphasis on research reproducibility and service reliability in data science applications.
Deploy your solutions using modern tools like uv/poetry for dependency management, Git for version control, Docker for containerization, and Kafka for real-time event streaming.
You will fit in if:
You are currently studying software engineering (eg. computer science, mathematics)
You are a graduate (MA) or final year undergraduate (BA) student
You have valid student's rights from Studentski centar (can work on the student contract during internship and after)
You are available to start the internship on February 9th, 2026.
You can work full-time or part-time after completing the internship
Nice-to-have qualifications:
Have a GitHub profile with projects to show
Participated in student projects, hackatons, workshops or other similar activities
Already participated in some internship programs
Are fluent in English, speak at a conversational level
Internship timeline:
Application deadline (31st of December)
Imocha online testing (January)
Interview with Mentors & Talent Acquisition and selection process feedback (January)
Start of internship program (February 9th)
Orientation week in Zagreb Infobip campus
Working with the mentor and within a team (February - April)
End of the Internship program (April)
Why you'll love it here:
Orientation week with all interns and a personalized onboarding plan.
Mentor and team support.
Being a part of a growing company in a growing industry – we challenge you not to grow!
Work with people from all over the world. We put the “global” in globalization.
Possibility to stay on after the internship, depending on your performance and business needs.
Why choose internship at Infobip?
Paid internship program
Travel allowance as per city of work
Free lunch
Free Snacks and Beverages
Social Events
Internal Trainings
Free access to Udemy platform
Internship welcome package
Referral Bonus
Equipment
On-Site Amenities
For more details, feel free to contact recruiter Zrinka on LinkedIn.