Replit · 2 weeks ago
Software Engineer, Anti-Abuse & Security
Foster City, CA (Hybrid) In office M,W,F
Full-time
Hybrid
Mid, Senior Level
$190K/yr - $240K/yr
4+ years expReplit is a software creation platform that empowers users to build applications using natural language. The Anti-Abuse team is responsible for defending Replit's platform from exploitation by detecting and mitigating various abuse scenarios, utilizing AI-driven detection systems and automated responses to protect users.
Artificial Intelligence (AI)Cloud ComputingDeveloper ToolsInformation TechnologySoftware
Responsibilities
Design and implement LLM guardrails that detect abuse scenarios in AI-generated code and agent interactions
Build AI-powered detection systems that use LLMs to identify malicious patterns, classify threats, and automate response decisions
Build and operate abuse detection systems that identify phishing, cryptomining, account takeover, and financial fraud across millions of daily user actions
Design automated response mechanisms that enforce platform policies without manual intervention
Own the full abuse response lifecycle: detection, investigation, enforcement, and handling appeals alongside Support and Legal
Analyze attack patterns using BigQuery and Hex, turning investigation findings into new detection rules
Maintain and extend internal detection tools (Slurper, Netwatch) that continuously monitor user activity
Integrate and tune security scanners (SAST, SCA) in CI pipelines with tight performance SLAs
Track abuse trends, measure detection effectiveness, and adapt defenses as attack patterns evolve
Qualification
Required
4+ years of experience in security engineering, anti-abuse, trust & safety, or fraud detection
Strong programming skills in Python and/or TypeScript for building detection systems and automation
Experience with SQL and data analysis at scale (BigQuery, Snowflake, or similar)
Experience building or fine-tuning ML/LLM-based classifiers for security or abuse detection
Familiarity with prompt injection, jailbreaking, and other LLM-specific attack vectors
Ability to investigate complex abuse patterns and translate findings into automated defenses
Familiarity with common attack patterns: phishing infrastructure, account takeover, credential stuffing, resource abuse
Clear communication skills for working across Security, Support, Legal, and Engineering teams
Preferred
Experience at a platform company dealing with user-generated content or compute abuse (hosting providers, cloud platforms, developer tools)
Background in fraud detection, payment abuse, or financial crime
Familiarity with device fingerprinting, IP reputation, and email validation services
Experience with CI/CD security tooling (SAST, SCA, Dependabot, Snyk)
Knowledge of container security, Linux internals, or cloud infrastructure (GCP preferred)
Prior work with abuse reporting pipelines, trust & safety tooling, or content moderation systems
Benefits
💰 Competitive Salary & Equity
💹 401(k) Program
⚕️ Health, Dental, Vision and Life Insurance
🩼 Short Term and Long Term Disability
🚼 Paid Parental, Medical, Caregiver Leave
🚗 Commuter Benefits
📱 Monthly Wellness Stipend
🧑💻 Autonoumous Work Environement
🖥 In Office Set-Up Reimbursement
🏝 Flexible Time Off (FTO) + Holidays
🚀 Quarterly Team Gatherings
☕ In Office Amenities
Company
Replit
Replit is the most secure agentic platform for production-ready apps.
51-200 employees
H1B Sponsorship
Replit has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (8)
2024 (5)
2023 (2)
2022 (2)
Funding
Current Stage
Growth StageTotal Funding
$472.02MKey Investors
Prysm CapitalCraft VenturesAndreessen Horowitz
2025-07-30Series C· $250M
2023-11-06Series B· $20M
2023-04-25Series B· $97.4M
Leadership Team
Amjad Masad
CEO
Haya Odeh
Co-Founder
Recent News
2026-01-19
Company data provided by crunchbase