Member of Technical Staff - Research
3 months ago- Role family
- Software Engineering
- Location
- San Francisco
- Comp
- -
Explore Trajectory careers: 3 open roles hiring now. Find jobs at Trajectory with direct links to apply. Funding stage: Series A. Headcount: 11-50. Trajectory is a San Francisco research and product lab building a platform for continual learning, letting AI products keep post-training on real production signals (user edits, corrections, retries, rejections) instead of freezing after deployment. Its SDK and dashboards instrument live AI behavior, steer model optimization, and ship improvements continuously. Customers include Clay, Harvey, Decagon, Mercor, Mistral, and Rogo.
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Trajectory is a Series A stage AI startup, founded in 2026, with $55M in total disclosed funding. Its most recent round was a $40M Series A in Aug 2026. It currently lists 3 open roles across San Francisco. Source: Fast AI Jobs company dataset, updated Sep 2026.
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San Francisco · Member of Technical Staff · FullTime
San Francisco · Member of Technical Staff · FullTime
San Francisco · Member of Technical Staff · FullTime
Company profile last updated on Sep 1, 2026.
Trajectory jobs and careers: 3 open roles currently listed here. Review hiring details and apply via the official career page. Official careers page
Trajectory is an ai infrastructure company. Trajectory is a San Francisco research and product lab building a platform for continual learning, letting AI products keep post-training on real production signals (user edits, corrections, retries, rejections) instead of freezing after deployment. Its SDK and dashboards instrument live AI behavior, steer model optimization, and ship improvements continuously. Customers include Clay, Harvey, Decagon, Mercor, Mistral, and Rogo.
Open positions
3 jobs · Newest first
Candidate questions
Trajectory is a San Francisco research and product lab building a platform for continual learning, letting AI products keep post-training on real production signals (user edits, corrections, retries, rejections) instead of freezing after deployment. Its SDK and dashboards instrument live AI behavior, steer model optimization, and ship improvements continuously. Customers include Clay, Harvey, Decagon, Mercor, Mistral, and Rogo.
Yes. Trajectory is hiring and currently has 3 open roles listed on Fast AI Startup Jobs, each with a direct link to the official application page.
Trajectory is currently hiring for roles such as Member of Technical Staff - Research, Member of Technical Staff - Design Eng, Member of Technical Staff - Generalist. See the full list of jobs at Trajectory above.
Trajectory is hiring across San Francisco, and other locations based on its currently open roles.
Trajectory has raised $55M in total. The latest known stage is Series A.
Trajectory reports an employee count of 11-50.
Company context
Trajectory is a Series A stage AI startup, founded in 2026, with $55M in total disclosed funding. Its most recent round was a $40M Series A in Aug 2026. It currently lists 3 open roles across San Francisco. Source: Fast AI Jobs company dataset, updated Sep 2026.