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Principal Software Engineer - Replication

Roblox

$289,460 - $338,270
Nov 20, 2025
San Mateo, CA, US
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Roblox is looking to solve the problem of ensuring seamless and synchronous game experiences for its users by improving the communication of game state to all players

Requirements

  • 8+ years of industry experience
  • Experienced with Game networking coming from a Game Engine/Studio
  • Amazing at systems-level C++ programming
  • Deep understanding of how high-performance and low-latency networking solutions for a variety of game genres are architected and designed
  • Practical experience with core game networking paradigms, such as client-side prediction and server reconciliation, data serialization and compression
  • Extensive experience with multi-threaded programming, synchronization primitives, and designing thread-safe networking systems
  • Worked on some or all the devices Roblox supports - from desktop clients to mobile phone clients to console clients

Responsibilities

  • Helping the players experience the game as a nearly synchronous world
  • Working in all areas of the game platform to achieve real-time communication of every part of Roblox
  • Ensuring the communication of the game state to all players
  • Coordinating all the computers involved into a smooth experience for the players
  • Reducing waste in network exchanges
  • Improving the performance and latency of the game networking system
  • Designing and implementing high-performance and low-latency networking solutions

Other

  • Leading engineer with 8+ years of industry experience
  • Bachelor's, Master's, or Ph.D. degree in Computer Science or related field (not explicitly mentioned but implied)
  • Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday
  • Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type
  • Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process