Full Stack Engineer
Core
Build and improve systems to detect and stop abuse (spam, phishing, bots, fraudulent SMS) and ensure the reliability and compliance of Calendly's email and SMS notifications.
Role type
Senior Full Stack Engineer (Trust & Safety)
Builds
Abuse detection systems, notification delivery infrastructure, and operational tools for the Trust & Safety team.
Domain
SaaS, Trust & Safety, Fraud Prevention, Messaging Infrastructure
Required skills
Backend development, Service-oriented architecture, Rails/Node/TypeScript/Go, SQL, Data analysis, System design, On-call management, AI tool usage
Preferred skills
Trust & Safety/Fraud prevention, Email/SMS delivery, Bot protection, Rules engines, LLM moderation, GCP/Kubernetes/PostgreSQL/Redis
Responsibilities
Build systems to detect and stop abuse across sign-up, booking, and messaging; Improve reliability and compliance of email/SMS notifications; Ship new detection signals with careful measurement; Respond to active abuse during on-call; Build tools for the Trust & Safety Operations team; Partner with Product, Operations, and Data teams.
Seniority
Senior, hands-on IC
