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Backend Developer - Design & Math

Location: poland (krakow)

Job Area: Gaming & Development

About the role

  • Developing the backend and mathematical models for Game in the Box solutions, including implementation of game logic, computational systems, and integration with other system components;
  • Maintaining and developing game designs used in projects;
  • Implementing new game-related functionalities;
  • Preparing and executing unit and integration tests;
  • Designing game functionalities in accordance with licensing regulations;
  • Designing and developing game mechanics and game projects supporting ongoing initiatives;
  • Creating project and technical documentation;
  • Collaborating with project teams and developers on the integration and implementation of game projects;
  • Conceptualizing and implementing new game projects within defined requirements and constraints;
  • Verifying the correctness of game designs, ensuring their alignment and optimization;
  • Analyzing game-related data to identify new mechanics and industry trends;
  • Evaluating game performance after deployment and providing insights into player behavior;
  • Conducting analyses to detect irregularities and proposing corrective solutions.

Key Skills

  • 2–3 years of commercial backend development experience (e.g. Java/Kotlin/TypeScript/Node.js or C#)
  • Strong mathematical skills, including a solid understanding of probability, statistics, and algorithms
  • Mathematical intuition and the ability to build, run, and interpret simulation results
  • Hands-on experience with unit and integration testing
  • Strong collaboration skills and experience working in agile, cross-functional teams
  • Good command of English (written and spoken)
  • Genuine passion for games and commitment to delivering high-quality software

Nice to have:

  • Experience with backend development for online casino / iGaming products
  • Familiarity with video slot mechanics and slot math models (RTP, volatility, hit frequency, pay tables)
  • Experience designing game mechanics or mathematical models for games
  • Ability to test and validate mathematical outcomes using MS Excel, programming, and proprietary tools to guarantee accuracy and quality
  • Understanding of Docker and containerization
  • Understanding of licensing and regulatory requirements in regulated gaming markets
  • Ability to test and validate mathematical outcomes using MS Excel, programming, and proprietary tools to guarantee accuracy and quality

Additional Information

Equal Opportunity:

We are an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

Perks working at Yggdrasil

  • Career
    Progression

  • Gym
    Allowance

  • Fun & Excitement
    In Everything We Do

  • Relocation
    Package

  • Health
    Insurance

  • Work Life
    Balance

  • Who we are

    Yggdrasil is built on passion, creativity and great teamwork. The mix of +15 nationalities from different cultures makes our company dynamic, progressive and unique. The company mindset is fuelled by three fundamental values:

    • Fun and Excitement which represent our passion for gaming which is the foundation of Yggdrasil
    • Responsibility to deliver online entertainment in a safe, reliable and established manner
    • Commitment to offer the best quality product which includes going the extra mile to have the most satisfied clients, partners and players.
  • YGG founded in 2013
    Yggdrasil was founded in 2013 and have since set out on a steady road to industry leadership, innovation and success.
    Yggdrasilians
    We are +160 Yggdrasilians who work across 4 offices in Malta, Poland, Gibraltar and Sweden and deliver incredible things every day!
    Hybrid Working
    We are a modern company and offer our employees a hybrid working mode. It means Yggdrasilians are able to work both in our offices but also remotely.
  • Who we are

    Being part of Yggdrasil means being part of an evolving business and performance driven culture that travels fast. Our employees are our greatest asset and the backbone of the company.

    Their everyday commitment and hard work are what pays off in the long run. The Yggdrasil inclusive mindset and team spirit are what makes our company unique and it transcends into our awesome games, new innovations and market leadership.