Middle Python Backend Developer (FastAPI / iGaming / RGS)

Looking for a Middle Python Developer with commercial experience in iGaming. You will be responsible for developing core slot machine server logic, mathematical simulations, and RGS engine advancement. Fully remote, product-based development, highload.
 

About the project

We are a product company developing next-generation online slot games. Our backend handles the core game mechanics, real-time bet processing, and seamless integration with complex mathematical models. We are scaling our team and looking for an engineer who understands game logic and high-volume data.

That's what you should do:

• Develop and optimize the server-side logic of slot games (spin validation, bonus mechanics, free spins).
• Integrate mathematical models provided by game mathematicians into efficient, scalable Python code.
• Run simulations (millions of spins using Monte Carlo methods) to validate theoretical RTP, hit rates, and volatility.
• Ensure high performance and sub-second response times for real-time betting transactions under highload conditions.

• Maintain and scale our internal RGS (Remote Game Server) architecture.

   

We are looking for current skills:

• 3+ years of professional experience in Python backend development.
• 1.5+ years of proven experience in iGaming - specifically developing slots logic or RGS.
• Strong proficiency with FastAPI (or similar asynchronous frameworks like Sanic/Tortoise ORM/asyncio).
• Solid understanding of slot game math concepts: RTP, Volatility, Hit Rate, RNG.
• Experience with NumPy/Pandas for mathematical simulations and data analysis.
• Production experience with PostgreSQL and Redis (session management, caching game states).
• Familiarity with message brokers (RabbitMQ/Kafka).

• English level: B1+ or higher (technical discussion and documentation).

   

Will be a plus:

• Experience with game certification processes (GLI, iTechLabs, etc.).
• Basic knowledge of probability theory and combinatorics.
• Experience with Docker and CI/CD pipelines.

That's what we offer to you:

• Regular review of the salary.
• The fast growth of the seniority level.
• Ability to work remotely.
• Paid sick leave and working day vacation.
• State holidays, according to the legislation of Ukraine.
• Interesting and challenging projects.
• Friendly team of professionals.

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Questions and Answers:

- Does the position come with a probation period, and if so, how long does it last? 

Yes, there is a three-month probation period.

- What is the expected work schedule?

Full-time, remote, flexible, with start no later than 11:00 (on average 8 hours per day).

- How many vacation and sick days are provided?

Paid vacation – 12 working days; Paid sick leave  – 10 working days.

So don't waste your time, write to us, and let's create some cool things together! :)