Mid .NET Core Backend Developer (Game Engine / Slot Platform) (Remote)

Mid .NET Core Backend Developer (Game Engine / Slot Platform)

Company Overview

We are a startup studio developing online casino games, creating modern iGaming products for the international market. We operate in the B2B segment and focus on quality, strong visual identity, and building a recognisable brand trusted by operators, partners, and players worldwide.

Art of Spin is an ambitious and fast-growing online casino games provider, delivering engaging and visually stunning experiences. Specializing in slots, quick-win formats, and in-game gamification, we combine captivating animation with compelling gameplay to keep players immersed. Innovation, creativity, and a player-first mindset drive everything we do — from building unique gaming content to providing reliable technical solutions. Committed to quality, flexibility, and regulatory compliance, we create lasting partnerships that fuel sustainable growth. Join us in reshaping the future of online casino entertainment — where every spin is a new adventure.18 + | Please Gamble Responsibly | BeGambleAware.org

Job Summary

We are building a modular slot game engine that includes: A core game engine (state-machine–driven game flow), A large gamification module (quests, inventory, in-game shop), An administration module for managing games, content, and configurations.

Architecture: Microservices-based (~15 services), REST & gRPC APIs, Asynchronous workflows, Dockerized environments.

This is a high-impact backend role focused on implementing and validating slot game mathematical logic within our .NET-based engine. You will be the primary owner of math algorithm implementation and validation, directly influencing game fairness, performance, and release readiness. This is not just CRUD backend — it’s algorithm-heavy, logic-critical development.

Role Scope & Impact: Own the implementation and validation of game math logic, Ensure fairness, correctness, and performance of slot mechanics, Influence engineering standards at an early product stage, Work end-to-end on features in a fast-moving, small-team environment.

Tech Stack: .NET Core (C#), PostgreSQL, RabbitMQ, Docker / Docker Compose, gRPC / REST APIs, XUnit, Microservices architecture, State-machine–driven logic.

Key Responsibilities

• Develop and maintain scalable microservices using .NET Core (C#)
• Design and implement RESTful and gRPC APIs
• Work with asynchronous workflows using RabbitMQ
• Integrate with PostgreSQL and optimize complex SQL queries
• Work within Dockerized environments (local & production)
• Implement mathematical algorithms defined by our mathematician (currently written in Java)
• Accurately port game math logic from Java into C# within our state-machine architecture
• Integrate new game math into existing services and pipelines
• Write and maintain RTP unit tests and automated report generation to validate math correctness
• Contribute to internal tooling and test harnesses for large-scale spin simulations
• Support and maintain already implemented games (bug fixes, refactoring, performance optimizations)
• Contribute to architecture decisions
• Participate in code reviews
• Apply clean architecture and SOLID principles
• Collaborate closely with DevOps engineers, QA, and cross-functional teams
• Help shape engineering standards early in the product lifecycle

Requirements / Qualifications

• 3–6+ years of professional experience with C# and .NET Core
• Strong proficiency in PostgreSQL with hands-on query optimization
• Experience working with message brokers (RabbitMQ preferred)
• Solid understanding of microservices architecture and scalability patterns
• Strong knowledge of software design principles (SOLID, DDD, Clean Architecture)
• Experience writing robust unit tests and integrating them into CI/CD pipelines
• Proficiency with Docker
• Ability to read and understand Java code for accurate logic porting
• Strong understanding of algorithms and state machines
• English proficiency sufficient for technical documentation and written communication

Preferred Qualifications

• Kubernetes
• CI/CD (GitLab CI, GitHub Actions)
• Observability tools (ELK, Prometheus, Grafana)

Location

European Union, Remote: True

Salary & Benefits

• Opportunity to work on products used by thousands of players worldwide
• Modern technology stack and flexible development processes
• A friendly, professional team with a strong culture of knowledge sharing
• Opportunities for professional growth and continuous learning
• Competitive compensation and comfortable working conditions (office / hybrid / fully remote options)