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FlashKings
Software EngineerFlashKings • newmarket, on, ca
No longer accepting applications
Software Engineer

Software Engineer

FlashKings • newmarket, on, ca
3 days ago
Job type
  • Full-time
Job description

Location

  • Montreal, Canada


We operate a B2B platform in the online gaming space and are looking for a strong engineer to take ownership of key parts of the system. This role focuses on understanding the system, improving reliability, and driving incremental improvements over time.


Looking for a mid-senior engineer with experience modernizing legacy .NET systems and leading architecture decisions.


  • Strong C# / modern .NET experience
  • Experience working with legacy .NET systems and modernization strategies
  • Solid SQL Server skills (querying, performance tuning, data modeling)
  • Experience designing and building REST APIs
  • Understanding of modern frontend frameworks (React or similar)
  • Familiarity with cloud environments (Azure preferred) and deployment workflows
  • Knowledge of authentication, security, and access control best practices
  • Experience with CI/CD pipelines and version control (Git)
  • Ability to assess existing systems and define phased modernization plans
  • Strong understanding of system architecture and performance optimization
  • Comfortable owning projects end-to-end and coordinating with external teams


What You’ll Do

  • Work within an existing backend platform (APIs, integrations, core services)
  • Own and improve system reliability and performance
  • Integrate and manage external providers (casino, sportsbook feeds, payments)
  • Debug and resolve production issues efficiently
  • Drive incremental improvements to architecture and code quality
  • Support new operator integrations and platform configurations


Nice to Have

  • Experience with:
  • fintech, payments, or wallet systems
  • real-time or event-driven systems
  • gaming or betting platforms
  • Experience operating production systems with live users


What You’ll Get

  • High ownership over meaningful parts of the system
  • High opportunity for true career growth
  • Direct impact on a live product
  • Opportunity to grow with the platform as it scales
  • Exposure to complex systems (transactions, integrations, real-time data)


Team

  • Lean, technical-first environment
  • Working directly with leadership on system and technical decisions
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Software Engineer • newmarket, on, ca

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