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Qualient Technology Solutions UK Limited

Senior Dotnet Developer

Qualient Technology Solutions UK Limited
Austria · Contract · Mid-Senior

We are Looking for Senior Dotnet Developer Based in Vienna, Austria Location.


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

Key Skills

Ranked by relevance

fault tolerance microservices restful apis kubernetes postgresql docker cicd
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Posted
Jan 20, 2026
Type
Contract
Level
Mid-Senior
Location
Vienna

Industries

IT Services IT Consulting

Categories

Information Technology

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