Senior Dotnet Developer

Job Description: Senior .NET Developer

Role: Senior Developer (.NET/C#), Pool Based Wagering

Location: Vienna, Austria

About the Role:

Client is seeking an experienced Senior Backend Developer to join our engineering team in Vienna. You will be working on a core betting platform for a global leader in the sports betting and gaming industry.

This role focuses specifically on the Pool Based Wagering stream. You will be responsible for developing and optimizing high-performance transaction engines that calculate pool dividends and process complex bets in real-time. This is a high-concurrency environment where accuracy and low latency are non-negotiable.

Key Responsibilities:

• Core Development: Design, build, and maintain scalable backend services using .NET Core (C#) for large-scale pool wagering systems.
• High-Volume Processing: Develop solutions to handle massive spikes in transaction volume during major sporting events (e.g., horse racing festivals), ensuring zero downtime.
• Algorithm Implementation: Implement complex mathematical models for pool calculations (tote betting) and dividend distribution.
• Database Optimization: Write and optimize complex SQL queries to ensure data integrity and speed within a high-transaction database environment.
• System Resilience: Diagnose and resolve production issues in a distributed system architecture, focusing on fault tolerance and recovery.
• Collaboration: Work closely with Product Owners and QAs to translate betting logic into robust technical solutions.

Required Technical Skills:

• Primary Language: Expert proficiency in C# and the .NET Framework / .NET Core.
• Database: Strong experience with SQL Server or PostgreSQL, including stored procedures and performance tuning.
• Architecture: Experience with microservices, RESTful APIs, and distributed systems.
• Concurrency: Deep understanding of multi-threading, asynchronous programming, and handling race conditions.
• Tools: Familiarity with Docker, Kubernetes, and CI/CD pipelines (Azure DevOps/Jenkins).

Preferred Domain Knowledge:

• Experience in Sports Betting, High-Frequency Trading (HFT), or Fintech is strongly preferred.
• Understanding of "Pool" or "Parimutuel" betting mechanics is a distinct advantage.

What We Offer:

• The opportunity to work on systems that process millions of transactions daily.
• A collaborative environment working with a global team of experts.
• Competitive compensation and career growth opportunities within Client.