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Full Stack Engineer - Trust and Safety

Calendly· Engineering
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Remote$187.7k - $227.4kFull-timePosted 4d ago

About the role

Remote role on Calendly's Trust & Safety team focusing on building systems to detect and prevent abuse, improve deliverability and compliance of messages, and support operations, with on-call responsibilities and collaboration with product, operations, and data.

Responsibilities

  • Building and improving the systems that detect and stop abuse across sign-up, booking, and messaging (spam, phishing, bots, fraudulent SMS traffic).
  • Improving the reliability, deliverability, and compliance of the email and SMS notifications Calendly sends.
  • Shipping new detection carefully: measuring performance on real traffic before acting on accounts, balancing false positives/negatives.
  • Responding to active abuse, including on-call, by stopping damage quickly and replacing quick fixes with durable solutions.
  • Building tools to help Trust & Safety Operations review accounts faster and understand actions taken by the system.
  • Partnering with Product, Operations, and Data to define requirements and measure impact of shipped features.
  • Working with other product teams to add protections to owned flows.
  • Reviewing implementation plans and pull requests, and sharing learnings with the team.

Qualifications

  • 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, and willingness to work across more than one.
  • Comfort with relational databases and SQL, and with using data to check whether a change actually worked.
  • Analytical, curious mindset about potential misuse and system abuse.
  • Good judgment about trade-offs to stop bad actors without adding friction for real customers.
  • Commitment to clean, reliable, maintainable code, thoughtful testing, and shipping in small increments.
  • Clear communication with engineers and non-engineers alike, including Operations and Support partners.
  • Comfort and skill with AI tools in engineering work, including critic al review of outputs.
  • Availability to participate in on-call rotation for critical services.
  • Authorized to work lawfully in the United States of America.

Skills

Required:Backend developmentRailsSQL & relational databases
Nice to have:Node/TypeScriptGo
Last updated Oct 21, 2026. Interested? Apply on the company site.

About Calendly

Free Online Appointment Scheduling Software | Calendly

Calendly is the modern scheduling platform that makes “finding time” a breeze. When connecting is easy, your teams can get more done.

scheduling automationmeeting notetakercalendar integrationsvideo conferencingenterprise software
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