2 hours ago
Remote, United StatesSenior
Base Salary
$156k - $227k/yr
Responsibilities
- Build and improve systems that detect and stop spam, phishing, bots, fraudulent SMS traffic, and other abuse across sign-up, booking, and messaging flows.
- Improve the reliability, deliverability, and compliance of Calendly’s email and SMS notifications.
- Measure detection performance on real traffic and balance false positives against false negatives before enforcement.
- Respond to active abuse during on-call and replace short-term mitigations with durable solutions.
- Build tools for Trust & Safety Operations to review accounts and understand automated actions.
- Partner with Product, Operations, Data, and other product engineering teams to define requirements, measure impact, and add protections to owned flows.
- Review implementation plans and pull requests and share technical learnings with the team.
Requirements
- 3+ years of professional software development experience at a SaaS or technology company, including building and running production systems.
- Strong backend skills building services, APIs, and data-heavy workflows in a service-oriented architecture.
- Experience with Rails, Node/TypeScript, Go, or a comparable language or framework, with willingness to work across multiple technologies.
- Experience with relational databases and SQL and using data to evaluate whether changes worked.
- Analytical judgment about system misuse, trade-offs between abuse prevention and customer friction, and false positives versus false negatives.
- Commitment to clean, reliable, maintainable code, thoughtful testing, and incremental delivery.
- Clear communication with engineers, Operations, Support, and other non-engineering partners.
- Comfort using AI tools in engineering work and critically reviewing their output.
- Availability to participate in an on-call rotation for critical services.
- Authorized to work lawfully in the United States; Calendly does not engage in immigration sponsorship.
- Preferred experience in trust and safety, fraud, spam or abuse prevention; email or SMS delivery; bot protection, rate limiting or third-party risk services; rules engines, risk scoring or ML-backed production decisions; LLM-based content classification or moderation; GCP, Kubernetes, PostgreSQL or Redis.
Benefits
- Full-time employees working at least 30 hours per week are eligible for equity awards and competitive benefits.
- Remote or hybrid work location determines the applicable geographic salary tier.
- The role may require occasional travel for company events, team collaboration, or offsites.
- Employment is unavailable in Alaska, Delaware, Hawaii, Idaho, Iowa, Montana, Nebraska, North Dakota, Rhode Island, South Dakota, and West Virginia.
Tech Stack
Categories
About Calendly
Calendly builds a scheduling automation platform used by individuals, teams, and enterprises to coordinate meetings, collect payments, and manage pre- and post-meeting workflows. It sells SaaS subscriptions with free and paid tiers, and integrates with Google, Microsoft 365/Outlook, Zoom, and CRM tools to support sales, recruiting, and customer success use cases. Founded in 2013 and headquartered in Atlanta, the privately held company reports more than 50 million users worldwide.