AI-Native Platform Security Engineer at Replit

Setup: Hybrid
Location: Foster City, California
Type: Full-time
Posted: Jan 12, 2026

Description

Replit is seeking a highly skilled individual to join their Anti-Abuse team. This role involves designing and implementing LLM guardrails, building AI-powered detection systems, and operating abuse detection systems to protect the platform from various forms of exploitation. The successful candidate will analyze attack patterns, maintain detection tools, integrate security scanners, and track abuse trends to adapt defenses against evolving threats.

Required Skills

Security Engineering
Anti-Abuse
Trust & Safety
Fraud Detection
Python
TypeScript
SQL
Data Analysis
ML/LLM-Based Classifiers
Prompt Injection
Jailbreaking
Attack Vectors
Investigate Complex Abuse Patterns
Automated Defenses
Common Attack Patterns
Phishing Infrastructure
Account Takeover
Credential Stuffing
Resource Abuse
Communication Skills

Additional Information

Required Previous Experiences: 4+ years of experience in security engineering, anti-abuse, trust & safety, or fraud detection
Preferred Qualifications: 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