Software Engineer I, RLE
Handshake•San Francisco, CA
•Onsite
About The Position
We’re hiring a Software Engineer to build our Reinforcement Learning Environments (RLE) platform—the interactive systems where frontier AI models learn to complete real-world work. This role owns meaningful components end-to-end and plays a key part in scaling systems that power model training and evaluation.
Requirements
- 2–4 years of experience in backend, distributed systems, or ML-adjacent infrastructure
- Strong proficiency in ReactJS and TypeScript
- Solid experience with relational databases (PostgreSQL) and data modeling
- Experience with cloud infrastructure (AWS/GCP) and CI/CD
- Ability to independently drive projects from design to production
Nice To Haves
- Experience with simulation systems or evaluation platforms
- Exposure to ML systems or working with research teams
- Experience in fast-moving, operations-heavy environments
Responsibilities
- Build and scale core components of RLE environments and infrastructure
- Design and implement backend systems and data pipelines
- Translate ambiguous product and research needs into production systems
- Develop modular, reusable workflow domains
- Improve reliability, observability, and system performance
Benefits
- Equity in a fast-growing company
- 401(k) match, competitive compensation, financial coaching
- Paid parental leave, fertility benefits, parental coaching
- Medical, dental, and vision, mental health support, $500 wellness stipend
- $2,000 learning stipend, ongoing development
- Commuting support, free lunch, and gym in our SF office
- Flexible PTO, 15 holidays + 2 flex days
- Team outings & referral bonuses
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What This Job Offers
Job Type
Full-time
Career Level
Entry Level
Education Level
No Education Listed
Number of Employees
501-1,000 employees
