Staff Software Engineer, Anti-Abuse & Security at Replit

**Who this is for** This role is for a seasoned Staff Software Engineer with a strong security and anti-abuse background, interested in tackling novel challenge

Work type: hybrid

Location: Foster City, CA (Hybrid) In office M,W,F

Salary: $190,000 – $240,000/yr

Type: Full-time

Summary

**Who this is for** This role is for a seasoned Staff Software Engineer with a strong security and anti-abuse background, interested in tackling novel challenges in an AI-native platform. If you are passionate about defending against sophisticated threats and leveraging AI for security, this is an exciting opportunity. **Key highlights** You will be at the forefront of protecting Replit from exploitation, building advanced AI-powered detection systems to combat threats like phishing, cryptomining, and prompt injection. This role offers unique hands-on experience applying AI to security problems in a production environment against real attackers. **You might be a good fit if you...** - Have extensive experience in security engineering, anti-abuse, or fraud detection. - Possess strong programming skills in Python and/or TypeScript. - Are proficient in SQL and analyzing data at scale. - Have experience building or fine-tuning ML/LLM-based classifiers for security.

Job Description

Replit is the agentic software creation platform that enables anyone to build applications using natural language. With millions of users worldwide, Replit is democratizing software development by removing traditional barriers to application creation.

## About the role

The Anti-Abuse team is the front line defending Replit's platform from exploitation. We detect and shut down phishing deployments, prevent cryptomining on free-tier infrastructure, stop LLM token farming, and keep bad actors from weaponizing the platform against our users. This is adversarial work: attackers adapt constantly, and we build the detection systems, heuristics, and automated responses that stay ahead of them.

What makes this role unique is the AI-native nature of Replit's platform. You'll work on problems that barely exist elsewhere: building guardrails for AI-generated code, detecting prompt injection attacks at scale, and using LLMs as a defensive tool against abuse. If you want hands-on experience applying AI to security problems, this is one of the few places you can do it in production with real attackers. You'll own problems end-to-end, from identifying emerging abuse patterns to shipping the systems that stop them at scale.

## In this role you will…










## Required skills and experience:









## Nice to have:







## Tools + Tech Stack for this role







## This role may not be a fit if






This is a full-time role that can be held from our Foster City, CA office. The role has an in-office requirement of Monday, Wednesday, and Friday.Full-Time Employee Benefits Include:

💰 Competitive Salary & Equity

💹 401(k) Program with a 4% match

⚕️ Health, Dental, Vision and Life Insurance

🩼 Short Term and Long Term Disability

🚼 Paid Parental, Medical, Caregiver Leave

🚗 Commuter Benefits

📱 Monthly Wellness Stipend

🧑‍💻 Autonomous Work Environment

🖥 In Office Set-Up Reimbursement

🏝 Flexible Time Off (FTO) + Holidays

🚀 Quarterly Team Gatherings

☕ In Office Amenities

Want to learn more about what we are up to?





Interviewing + Culture at Replit



To achieve our mission of making programming more accessible around the world, we need our team to be representative of the world. We welcome your unique perspective and experiences in shaping this product. We encourage people from all kinds of backgrounds to apply, including and especially candidates from underrepresented and non-traditional backgrounds.

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