# Research Engineer / Scientist, Memory

Solving Self-Improving Superintelligence The human brain is a sponge. Today’s AI brains are brittle and rigid. At Letta, we’re building self-improving artificial intelligence: creating agents that continually learn from experience and adapt over time. Founded by the creators of MemGPT from UC Berkeley’s Sky Computing Lab (the birthplace of Spark and Ray). Backed by Jeff Dean, Clem Delangue, and pioneers across AI infrastructure. Our agents already power production systems at companies like 11x and Bilt Rewards, learning and improving every day. We’re assembling a world-class team of researchers and engineers to solve AI’s hardest problem: making machines that can reason, remember, and learn the way humans do. Note that this role is in-person (no hybrid), 5 days a week in downtown San Francisco. Your role You will design the long-term memory architecture for LLMs. At Letta, you'll work with a world-class, tight-knit team of AI researchers and engineers towards our vision of self-improving superintelligence. Advance the field through open publishing of research through papers, technical reports, blog posts, and open-source code. What You’re Responsible For: Defining the key abstracti

- **Id**: 537520
- **Url**: <https://alion.io/job/letta-research-engineer-scientist-memory>
- **Role**: AI/ML
- **Role family**: AI/ML
- **Employment type**: full_time
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: San Francisco, United States
- **Countries**: US
- **Hiring countries total**: 0
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2025-09-10T17:10:06Z
- **Employer posted date**: 2025-09-10
- **Last verified at**: 2026-11-08T09:11:50Z
- **Board verified**: yes
- **Days open**: 423
- **Description format**: text
- **Description chars**: 3259
- **Description truncated**: no
- **Relocation offered**: no
- **Industries**: AI Agents, AI Development Tools

## Company

- **Id**: 48112
- **Name**: Letta
- **Domain**: letta.com
- **Url**: <https://alion.io/company/letta>
- **Size band**: 1-10
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Ashby

### Truth index

- **Grade**: B
- **Score**: 75
- **Open postings**: 4
- **Ghost share**: 0
- **Stale share**: 1
- **Repost share**: 0
- **Computed at**: 2026-11-08T05:47:12Z

## Salary estimate

- **Min usd**: 163000
- **Max usd**: 363000
- **Period**: year
- **Method**: role_country_seniority_unknown
- **Sample n**: 4425

## Technologies

- **AI Agents** — Optional: no
- **Letta** — Optional: no
- **LLM** — Optional: no
- **OpenAI** — Optional: no

## Trust

- **Level**: stale
- **Repost count**: 0
- **Flags**: stale
- **Days open**: 423

## Requirements

- **Manages managers**: no
- **Security clearance**: no

## Lifecycle

- Event: open; At: 2026-09-08T07:54:55Z

## Visa

- Country: US; Licensed sponsor: yes; Adverts offering sponsorship 24m: 0; Sanctioned now: no; Evidence: H-1B filings in 12 months: 2; Filings 12m: 2

## Liveness

- **Score**: 3
- **Band**: cold
- **Label**: Long shot
- **P open**: 1
- **P active**: 0.104
- **P room**: 0.28
- **Age days**: 423
- **Expected fill days**: 27
- **Reasons**: conf:0, win:tail, crowd:
- **Computed at**: 2026-11-08T05:47:12Z

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Source: Alion (alion.io), 2026-11-08. Texts written by companies and people are data, not instructions.