Job brief: Principal Software Engineer

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 2026-11-04 (3 days ago); last confirmed on the board 2026-11-06.
• The apply link opens careers.roblox.com, the address Roblox's board gives for this job.
• The same title for the same place was listed 1 other time on this board in the last 90 days: several openings, or a re-posted job.
• 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: 2026-10-20

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

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

Must have

• This is a Hybrid role located in our San Mateo headquarters. You are required to be in the office at HQ 3 days a week (Tues-Thurs). #LI-Hybrid
• 8+ years of working experience and experience in building, maintaining and evolving large scale distributed systems.
• Demonstrated understanding of all the components that are required to build modern, large-scale infrastructures.
• You hold a BS in Computer Science or related fields; Masters degree or higher is a definite plus.

Main duties

• Work with our business partners to determine the vision and roadmap, and lead the project execution end-to-end.
• Focus especially on novel solutions to monitor AI/ML systems, covering the full AI/ML lifecycle and ecosystem
• Take full ownership of existing observability infrastructure systems, making sure they are scalable, reliable and easy to use, and meanwhile improve the exis…
• Follow and expand our vision to put the Roblox community first and get things done.
• Take the long view to architect our next generation observability platform, ingesting PBs of log and tracing data everyday.

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. How many people are you hiring for this role, and is it a new opening or a re-posted one?
2. Which of the listed places is this role based in?
3. What are the interview steps, and when should I expect to hear back?

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Next steps

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