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Software Engineer, Trust & Safety

Resend· Engineering
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Remote$150k - $175kFull-timePosted yesterday

About the role

Software Engineer focused on building real-time anti-abuse systems to keep Resend open for good senders and closed to bad actors, including enforcement pipelines, detection rules, ML classifiers, and telemetry for observability.

Responsibilities

  • Build and run the real-time enforcement layer within a latency budget of milliseconds
  • Design pipelines that move from signal to decision to action, across sending, receiving and account activity
  • Build the detection rules and policies that decide when we act, and make them safe to change
  • Detect and contain account takeover and leaked API keys: notice when a trusted account stops acting like itself, and stop the damage without locking out the real owner
  • Close the feedback loop: every block and every reversal carries a reason, so we can measure each detection's precision and retire the ones that hurt good senders
  • Automate manual work such as investigations, appeals and bulk actions, so the team keeps up as volume grows
  • Build and evaluate ML classifiers for spam and phishing, and prove their precision before they enforce anything
  • Implement safeguards and make every action traceable through logs, metrics and audit trails
  • Ensure all enforcement actions are traceable with logs, metrics, and audit trails

Qualifications

  • Bring 5+ years of software engineering experience
  • Are fluent in writing and speaking English
  • Have deep experience with Node.js, TypeScript, React (Hono, Next.js)
  • Write Go, or want to, for latency-sensitive services
  • Have infrastructure and reliability skills (AWS, CDK, Datadog)
  • Are comfortable with APIs, event-driven architectures, queues and stateful services
  • Design systems that fail safe, and treat a false positive as a bug
  • Care deeply about observability: metrics, logs, tracing, error handling
  • Take ownership across the stack, from frontend surfaces down to databases and queues
  • Have proven experience with databases (Postgres, Redis)

Skills

Required:Node.jsTypeScript
Nice to have:React (Hono, Next.js)Go
Last updated Oct 25, 2026. Interested? Apply on the company site.
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About Resend

Email for developers

Resend is the new email API for developers. It's designed for you to build, test, and send transactional emails at scale. If you're using Sendgrid, AWS SES, or Postmark, come talk to us.

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