# Cohort 0

**Company:** [Replit](https://hotfix.jobs/companies/replit)
**Location:** Foster City, CA
**Role:** AI Research
**Experience:** 0+ years
**Skills:** Artificial Intelligence, Machine Learning, Mathematics, Optimization, Systems Engineering, Quantitative Research, Python, Developer Tooling
**Posted:** 2026-09-05

> Paid internship for quantitative students contributing to AI-powered software creation, systems optimization, and developer tooling. Candidates should demonstrate strong mathematical ability, curiosity about AI, and autonomous cross-functional collaboration.

## Job Description

## Responsibilities
- Contribute to engineering problems involving AI-powered software creation.
- Collaborate with engineers, designers, and product managers on platform infrastructure.
- Prototype novel approaches in AI, systems, or tooling using mathematical rigor.
- Ship work that impacts developers globally.

## Requirements
- Currently pursuing a bachelor's, master's, or PhD in Mathematics, Computer Science, Computer Engineering, Statistics, Physics, or a related quantitative field.
- At least one semester of school remaining after the internship.
- Demonstrated excellence in competitive mathematics, quantitative research, or advanced coursework.
- Curiosity about AI, agent systems, company building, or developer tooling.
- Strong first-principles thinking and mathematical intuition.
- Ability to work autonomously and collaborate cross-functionally.
- Strong communication skills for explaining quantitative concepts to technical and non-technical audiences.
- Curiosity, speed, and willingness to iterate quickly.

## Nice-to-haves
- Experience with competitive mathematics such as IMO or IOI.
- Projects built on the Replit platform.

## Benefits
- Competitive salary and equity.
- 401(k) program with a 4% match for US employees.
- Health, dental, vision, and life insurance.
- Short- and long-term disability coverage.
- Paid parental, medical, and caregiver leave.
- Flexible time off and holidays.
- Commuter benefits for in-office US employees.
- Monthly wellness stipend.
- Autonomous work environment.
- In-office setup reimbursement.
- Quarterly team gatherings.
- In-office amenities.

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**Canonical:** https://hotfix.jobs/jobs/0ee57580-5746-41e4-8219-f4e2c76dd74c