Job brief: Principal Software Engineer, Languages & Compilers

What JoRoute checked · Checked by JoRoute

• Listed on Roblox's own job board. JoRoute does not take listings from job ads or recruiters.
• First seen by JoRoute 2026-11-06 (today); last confirmed on the board 2026-11-06.
• The apply link opens careers.roblox.com, the address Roblox's board gives for this job.
• No other listing with this title and place on this board in the last 90 days.
• No layoff notices (WARN) under this name in the state files JoRoute reads.

What the listing says · Employer's own words, not checked

• Pay: $295,250 to $345,040 a year
• Job type: Not stated
• Where: San Mateo, CA, United States · San Mateo, CA
• Posted: 2026-11-05

What the job asks · Employer's own words, not checked

Level: Lead / staff. The title says "Principal".

Must have

• Over 10+ years of experience developing and deploying user-facing software products
• A minimum of Bachelor's degree in Computer Science

Main duties

• Contribute to the design and development of programming models that improve script performance and scalability
• Develop prototypes to validate designs against realistic use cases, ensuring they meet our performance and functionality standards
• Take ownership of new feature development from concept and prototyping through to deployment and maintenance
• Improve the adaptability and performance of existing components
• Collaborate with engineers across engine and partner teams to build collaborative solutions

Lines copied from the posting, not rewritten. "Preferred" or "nice to have" items are not listed as must-haves.

How it compares · Compared by JoRoute from listings

• Typical listed pay for software engineer jobs in San Mateo, CA: $257k a year (150 listings, 2 employers). This listing is 25% higher.
• Across Roblox's 253 open listings, 42% of those with a posting date were first posted more than 60 days ago. How Roblox hires

What nobody outside the employer knows · Not known

• Whether the role is already filled or on hold: employers often leave listings up.
• How many people applied, and who reads the applications.
• Where in the published range an offer would land.

Ask before you apply

1. Which of the listed places is this role based in?
2. What are the interview steps, and when should I expect to hear back?

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Next steps

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