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Lead Game Mathematician

Sofia / RemoteFull-time

Math is our edge. You’ll design the models that make our games thrilling, fair and certifiable - and set the standard for every title we ship.

Responsibilities

  • Design and own complete slot math models: RTP, volatility, hit frequency, feature triggers, max-win profiles
  • Build simulations and tooling to validate models across millions of rounds
  • Partner with developers to implement math faithfully and with the Producer to hit certification RTP targets
  • Push mechanical innovation - the kind of high-volatility, streamer-friendly math that defines the category

Must-haves

  • Degree in Mathematics, Statistics, Physics or similar (advanced probability)
  • 7+ years designing slot/casino game math in iGaming
  • Strong programming for simulations (Python/C#/C++ or similar)
  • Track record of shipped, certified titles

Nice-to-haves

  • Experience with lab certification (GLI/BMM/eCOGRA)
  • Novel mechanic design
  • Understanding of player engagement/retention data

What we offer

  • Founding-team equity/phantom shares
  • Top-of-market salary for this rare skill
  • 25+ days leave
  • Private health insurance
  • Multisport
  • Hardware & training budgets
  • Remote-friendly
  • The freedom to invent mechanics, not tweak templates

About us

OpenGames is a new, founder-funded B2B games studio building original, high-volatility online casino games for the real-money iGaming market. We’ll distribute through leading aggregators to operators worldwide, and we’re assembling a small, senior founding team in Bulgaria - offices in Sofia and Plovdiv, remote-friendly across the country. Our plan is deliberate: ship a tight portfolio of genuinely distinctive games, win on math and art, and grow with the people who built us. Join now and you’re not employee #200 at a corporation - you’re a founding voice with real ownership of the product.

Interested? Send a CV and anything you’ve shipped.