Junior Data Scientist (f/m/d)

Ten Square Games; Wrocław; Hybrid; PLN 60,000 - 100,000; Full time

Benefits offered by this job

Relocation package

Free breakfast

In-office massage

Concierge service

Job summary

Ten Square Games in Wroclaw invites a Junior Data Scientist to join as a full‑fledged team member, impacting game analytics from day one. You’ll own parts of the data journey—from gathering requirements to delivering visual insights—while receiving strong mentorship.

You’ll build dashboards, design ELT workflows with our data engineers, set KPIs and run A/B tests to optimize player engagement, using Python for exploratory analyses on large datasets and game features.

Qualifications

• Degree in quantitative field (data science, maths, CS, econ analytics)
• University projects, internships, or first commercial experience
• Knowledge of SQL with Postgres/Vertica
• Working knowledge of Python and analytical libraries
• Basic statistics knowledge
• Availability for full‑time work
• Data‑driven, analytical thinker
• Proactive and results‑driven
• Strong problem‑solving with large datasets
• Passion for games
• Fluent in English and Polish

Responsibilities

• Own the data journey from requirements to ELT design and final visualizations
• Shine insights to game teams and suggest analytics process improvements
• Collaborate with data engineers to build and maintain game data pipelines
• Learn to gather requirements, plan end-to-end processes
• Develop and maintain user-friendly dashboards and support their use
• Set KPIs and run A/B tests to optimize player income
• Use Python for exploratory analyses on product problems like matchmaking and segmentation

Skills

SQL

Python

Statistics

Data analysis

English

Polish

Education

Bachelor's degree in a quantitative field

Tools

Postgres

Vertica

Job description

HYBRID WORK MODEL: 3 DAYS PER WEEK (60%) IN OUR WROCLAW OFFICE AND 2 DAYS REMOTE

About us

Hi, we are Ten Square Games, and we live games! No, not a typo - but a level up from loving! We are on a mission of giving players excellent outdoor experiences on their mobiles. With global hits, such as Fishing Clash, we know how to make the best of technology, fun, and fair play. With 77 million registered players in 2025 and 300+ people on board, we keep growing and learning, having the insatiable hunger for the next success. If you also like to explore the unknown and know how to own it, we want to work with you!

What is this job all about?

By joining TSG as a Junior Data Scientist, you’ll become a full‑fledged member of the team, which means you’ll have a real impact on our products from day one. Don’t worry, though! We’ll make sure you have our support every step of the way. Do you want to Unlock Excitement? Check out what we have in store for you.

This position may not be right for you if you:

• Come from different academic backgrounds than data science, mathematics, computer science, economic analysis, or econometrics;
• Lack a solid foundation in statistics;
• Have no experience with SQL or databases;
• Are not comfortable analyzing large datasets;
• Are not interested in games;
• Are not available full-time.

What will you be doing?

• We work as “full-stack” analysts. You will be responsible for the entire data journey - from gathering requirements and designing ELT workflows to delivering final visualizations;
• You will play an active role in shaping the future of the game title by proactively sharing insights with the game team, suggesting process improvements, and shaping analytics practices;
• You will work closely with our data engineers to design, build, and maintain game data pipelines, aligning them with specific reporting and analytics requirements;
• More specifically, in this role, you will learn how to:
• understand product and data-related needs, and effectively collect requirements, then plan the end-to‑end process;
• learn how to develop and maintain user-friendly dashboards and support others in using them effectively;
• set KPIs and implement A/B tests to optimize player income throughout the game lifecycle;
• use Python to conduct exploratory and statistical analyses and tackle product problems such as matchmaking, player segmentation, and more.

What are we looking for?

• Academic background in a quantitative field such as data science, mathematics, computer science, economic analytics, econometrics, or a related field;
• Hands‑on experience through university projects, internships, or first commercial experience;
• Knowledge of SQL (we use Postgres and Vertica);
• Working knowledge of Python, including analytical libraries;
• Basic statistical knowledge;
• Availability for full‑time work;
• A data‑driven critical thinker with analytical experience;
• Proactive and results‑driven;
• Strong problem‑solving skills, with the ability to analyze large datasets;
• Passion for games;
• Fluent in English and Polish.

Amaze us with:

• Olympiad achievements (e.g., in mathematics or computer science);
• Exposure to A/B testing;
• Exposure to Python.

What do we offer in return?

• Real impact on the product through analytical work that delivers quickly measurable results;
• Hands‑on experience with a modern technology stack and large‑scale data (tens of terabytes and millions of active players);
• Strong learning opportunities through close mentoring and collaboration with experienced senior analysts, combined with a supportive and collaborative R&D team environment (20 people).

We believe that work is much more than the benefits that you receive, although we have quite a few of those:

• Clear career path & internal mobility;
• Tailored language lessons;
• Individual and team training budget;
• Relocation package;
• Choice of hardware - win or mac – take your pick;
• Stay in the game - program for moms;
• Free breakfast;
• Concierge service - to make your life easier;
• In-office massage;
• Psychological support;
• Worksmile cafeteria of benefits - individual fit;
• ESG impact activities.

At Ten Square Games, sustainability is at the heart of how we play.

We’re not just here to make games – we’re here to make a difference. From inspiring climate awareness among players to supporting nonprofits and putting actions that mitigate our climate impact into place, we’re all in. We’ve built an inclusive workspace where every voice counts, bringing fresh ideas to the table and shaping the future of gaming for all. With a merit-based recruitment approach, we welcome everyone ready to help us level up.

Dive into exciting projects, make an impact, and be part of the future with us!