Associate Software Engineer (RLE)

• We’re hiring an Associate Software Engineer to help build our Reinforcement Learning Environments (RLE) platform—the systems where frontier AI models learn to complete real-world work
• This is a hands-on, growth-oriented role where you’ll contribute to building core systems, learn quickly from senior engineers, and gain exposure to cutting-edge AI infrastructure
• Contribute to building RLE environments and supporting infrastructure
• Implement features across backend systems and frontend interfaces
• Work with senior engineers to improve system reliability and performance
• Help build modular workflow domains (e.g., engineering, finance, legal)
• Support data pipelines that power model training and evaluation
• What Success Looks Like
• Ships reliable features that improve RLE functionality
• Grows into owning small components independently
• Contributes to faster iteration and better developer velocity

Benefits

• Health Insurance: Comprehensive medical , dental, and vision coverage
• Fertility and family forming: Through a partnership, Handshake offers comprehensive family benefits, including infertility treatments and a $15K stipend, to its employees.
• LGTBQ+ coverage: All medical plans cover transgender services.
• Mental health: Discounts on a variety of wellness apps and an Employee Assistance Program with access to five free counseling sessions.
• Tax savings: Tax-advantaged benefits to save money on healthcare, dependent care, and other expenses.
• Life & disability insurance: Essential benefits and automatic coverage with basic life insurance, plus short-term and long-term disability coverage.
• 401k match: Dollar-for-dollar match up to 1% of pay, with a max of $1,200 per year.
• Equity: Our equity program includes grants at hire, refresher grants after two years of tenure, and grants alongside promotions.
• Financial management: Handshake partners to provide free professional financial planning services.
• Learning & development: Employees are provided with an annual stipend to use towards professional development, career development workshops, manager trainings, and 1-on-1 coaching through external partnerships
• Community leader support: Employee Resource Group leaders are compensated with a quarterly bonus for the high-impact work the role requires
• Parental leave: Leaves of 16 weeks for birth-giving parents and 10 weeks for non-birth-giving parents; the policy applies to adoptions as well. Handshake also partners to provide one-on-one coaching on preparing for leave and coming back from leave
• Flexible time off: No accrued time off or waiting period to take vacation. Two paid flexible holiday days off to observe holidays that closely align with religious, cultural, and personal needs
• Sabbatical: Paid six-week sabbatical to recharge and reset beginning at six years of continuous, full-time employment, and every four years thereafter
• Volunteer time off: Two days off for social and civil activism, volunteer work, and/or any related activities, including attending and participating in protests- Familiarity with backend development and APIs
• 0–2 years of experience (internships or full-time) in software engineering
• Working knowledge of ReactJS and TypeScript
• Eagerness to learn and operate in fast-paced environments
• Understanding of databases (e.g., PostgreSQL) and basic system design
• Experience with data pipelines or ML-adjacent systems
• Interest in AI/ML or simulation systems
• Exposure to cloud platforms (AWS, GCP)