Senior Technical Lead - Network Programming - Rainbow Six Siege

Location: Office-based in Montreal, Canada; Bucharest, Romania; or Kyiv, Ukraine.

Company

hirify.global is a global video game company creating original gaming experiences including Rainbow Six, Assassin’s Creed, and Just Dance.

What you will do

• Define the long-term networking architecture roadmap, including replication, server authority, client prediction, lag compensation, matchmaking, and distributed game services.
• Own the evolution of dedicated servers, session management, backend integrations, and cross-platform multiplayer systems.
• Set performance targets and lead optimization initiatives covering latency, bandwidth, server tick rates, CPU, memory, replication costs, and service response times.
• Improve service resiliency, fault tolerance, uptime, and security while addressing exploits, cheating vectors, packet manipulation, and service abuse.
• Analyze telemetry and production incidents, lead root-cause investigations, and maintain the health of a live-service multiplayer product.
• Lead and mentor network programmers while coordinating technical initiatives across gameplay, engine, quality, SRE, backend, data, security, production, and multiple studios.

Requirements

• 10+ years of professional software engineering experience and 7+ years developing multiplayer systems.
• Proven leadership of technical initiatives for large-scale online games and the ability to influence direction across multiple teams.
• Deep expertise in client/server architecture, real-time networking, replication models, distributed systems, concurrency, multithreading, and performance optimization.
• Very strong C++ expertise and experience developing and operating dedicated game servers.
• Experience supporting live-service products in production, including reliability, monitoring, incident response, and continuous optimization.
• Office-based work in Montreal, Bucharest, or Kyiv is required.

Nice to have

• Experience shipping competitive multiplayer titles and large-scale live-service architectures.
• Backend services and cloud-native systems experience.
• Knowledge of AWS, Azure, GameLift, PlayFab, and service orchestration.
• Experience with telemetry, observability, and production monitoring.
• Experience working across multiple studios and global development organizations.

Culture & Benefits

• Work with multidisciplinary teams across gameplay, engine, online services, security, data, production, and live operations.
• Contribute to a globally distributed game development organization.
• Help shape the technical direction of a high-scale competitive multiplayer experience.