ROBLOX Corporation

Senior Software Engineer - NPC Behavior

ROBLOX Corporation$196K — $243K *
Consumer Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5+ years of experience designing and implementing scalable backend systems
  • Hands-on experience with microservices and game engines
  • Proficient in C#, Lua, C++, Go, Python or similar languages
  • Curious about industry trends and new technologies
  • Strong teamwork skills for cross-functional collaboration
  • Long-term mindset for sustainable technical solutions

Responsibilities

  • Solve complex full-stack problems across client, game engine, backend, and ML models
  • Own product areas from design through to execution and feedback iteration
  • Collaborate with product, design, and partner teams to maintain high quality
  • Gather community feedback and adapt products to enhance value

Benefits

  • Eligible for equity compensation
  • Flexible onsite work schedule (Tuesday-Thursday, optional Monday & Friday)
  • Comprehensive benefits package
Full Job Description
The Creator Service NPC team is the heartbeat behind our worldwide gaming experiences. We aim to build the best NPC tools for creators. Our product covers play testing, in game NPC as well as digital players. We are using technologies from LLM, Imitation Learning, Reinforcement Learning, Behavior Trees, Statement Machines. As a Senior Software Engineer, you will design and build highly scalable systems to help creators to continuously deliver experiences that feel native and seamless. You will help us to build and maintain data pipelines, visualisation, feature transformation, annotation tools and work on inference set ups within and on top of our game engine.

Join us if you thrive on cross-functional collaboration, care about building the smartest NPCs and digital players, and want to shape how millions of players experience our worlds, and everywhere in between.

You Will:
  • Tackle and solve challenging full-stack problems that touch the client, game engine, backend services and machine learning models.
  • Own product areas and projects from technical design, execution, launch, and quick iteration based on feedback.
  • Work closely with product, design, and partner teams to maintain high execution quality and pace.
  • Proactively gather community feedback and respond swiftly to their needs, ensuring our products evolve to deliver exceptional value.

You Have:
  • Experience: You have 5+ years of experience and you've designed and led implementation on highly scalable and reliable distributed backend systems. You have hands-on experience in microservices. You have hands-on experience with game engines.
  • Knowledge: You are proficient in one or more programming languages (C#, Lua, C++, Go, Python or similar programming language). Deep understanding of C++ is a plus, familiarity with game engines is a plus, familiarity with machine learning is a plus.
  • Curiosity: You are curious and passionate about industry trends and new technologies, you are able to apply them to practical problems innovatively.
  • Strong Teamwork: You are able to drive cross-functional projects and collaborate with teams to deliver the most curated technical solution.
  • Long-term Mindset: You are willing to take the long-term to build the system, and your design choices and technical solutions are usually still optimal multiple years into the future.


For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page.

Annual Salary Range

$196,750-$243,290 USD

Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted).

About ROBLOX Corporation

Roblox Corporation is a video game company that operates a massively multiplayer online game platform. The platform allows users to create and play games in a virtual world, with a focus on user-generated content. Roblox was founded in 2004 and is headquartered in San Mateo, California. The company has grown rapidly in recent years, and now has over 100 million monthly active users. In 2021, Roblox went public through a direct listing on the New York Stock Exchange.
Learn more about ROBLOX Corporation
Size
960 employees
Market Cap
$15.6 billion
Industry
Net Income
-$242.8 million
Founded
2004
Revenue
$727 million
NASDAQ

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