Replit
Software Development
SeniorSoftwareEngineer,Risk
“Senior Software Engineer, Risk at Replit. Skills: Security Engineering, Anti-Abuse, LLM, Python. Design LLM guardrails. Build AI-powered detection systems”
What You'll Achieve.
Stay ahead of attackers; Ship systems that stop abuse at scale; Enforce platform policies without manual intervention; Measure detection effectiveness
Industry & Context.
Investigate complex abuse patterns; Translate findings into automated defenses; Adapting defenses as attack patterns evolve
In-office requirement of Monday, Wednesday, and Friday
What They're Looking For.
Must Have
4+ years of experience in security engineering, anti-abuse, trust & safety, or fraud detection, 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, Ability to investigate complex abuse patterns and translate findings into automated defenses, Clear communication skills for working across Security, Support, Legal, and Engineering teams
Nice to Have
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
What You'll Do.
Design LLM guardrails
Build AI-powered detection systems
Build abuse detection systems
Design automated response mechanisms
Own abuse response lifecycle
Analyze attack patterns
Maintain detection tools
Integrate security scanners
How You'll Work.
Team & Collaboration
Working across Security, Support, Legal, and Engineering teams; Partnering closely with Support, Legal, and cross-functional teams
Communication Scope
Clear communication skills
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