# Staff Software Engineer, Trust & Safety

**Company**: Replit
**Location**: Foster City, CA
**Work arrangement**: hybrid
**Experience**: staff
**Job type**: Full time
**Salary**: $250K - $315K
**Category**: Engineering
**Industry**: Technology
**Wikidata**: https://www.wikidata.org/wiki/Q60768699

**Apply**: https://jobs.ashbyhq.com/replit/bd27a146-a100-4eef-80b5-f24a7ddff344?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_df07bf7f-5e2

## Description

We are seeking a Staff Software Engineer to join our Trust & Safety team. As a key member of our team, you will design and implement LLM guardrails that detect abuse scenarios in AI-generated code and agent interactions. You will also build AI-powered detection systems that use LLMs to identify malicious patterns, classify threats, and automate response decisions.

In this role, you will:

- 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

Our ideal candidate will have 8+ years of experience in security engineering, anti-abuse, trust & safety, or fraud detection, with strong programming skills in Python and/or TypeScript, and experience with SQL and data analysis at scale.

We offer a competitive salary and equity, as well as a range of benefits including health, dental, and vision insurance, 401(k) program, paid parental leave, and flexible time off.

## Skills

### Required
- security engineering
- anti-abuse
- trust & safety
- fraud detection
- Python
- TypeScript
- SQL
- data analysis

### Nice to have
- LLM guardrails
- AI-powered detection systems
- automated response mechanisms
- security scanners
- CI pipelines

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Source: [Apply at jobs.ashbyhq.com](https://jobs.ashbyhq.com/replit/bd27a146-a100-4eef-80b5-f24a7ddff344?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)