Research Engineer / Scientist, Post-Training
EngineeringOnsiteSan Francisco, California, United States
Letta jobs and hiring trends
Artificial Intelligence25 employeesFounded 2024
Company identity and hiring signals verified from public source listings
- Active roles
- 3
- New in 7 days
- 3
- Hiring velocity
- —
- Top function
- engineering
- Comparable salary
- —
- Remote-friendly
- 0%
3 observed days
3 classified
Needs 5 comparable ranges
0 of 3 classified
Observed daily snapshots
Active-role trend
Latest: 3 roles
Sep 10Sep 14
Observed active listings was unchanged from 3 to 3 across 3 snapshot days. Missing days are left as gaps and are not estimated.
View accessible snapshot table
| Date | Active listings |
|---|---|
| 2026-09-10 | 3 |
| 2026-09-12 | 3 |
| 2026-09-14 | 3 |
Listing recency
Source observation
- Observed by source within 7 days
- 3 of 3
- Latest source observation
- Median posting age
- —
What this company is hiring for
Engineering2
Software1
Based on n=3 classified listings
Seniority mix
Mid3
Based on n=3 classified listings
Work model
Onsite3
Based on n=3 classified listings
Top hiring locations
San Francisco, California, United States3
Based on n=3 classified listings
Verified active listings
Open roles at Letta (3)
About Letta
Developer platform for building persistent AI agents with memory.
- Industry
- Artificial Intelligence
- Company size
- 25 employees
- Founded
- 2024
- Facts checked
- Sep 10, 2026