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Backend Engineer

Location: Remote
Compensation: To Be Discussed
Reviewed: Wed, Sep 30, 2026
This job expires in: 30 days

Job Summary

Building and operating email transport infrastructure, the full-time Backend Engineer will work remotely to enhance SMTP delivery systems, develop throttling mechanisms, and improve delivery outcome classifications while collaborating with cross-functional teams.

Key responsibilities
  • Develop and maintain Resend's email transport infrastructure, focusing on SMTP delivery and routing systems
  • Design and implement systems for throttling at various levels, including domain and customer levels
  • Participate in incident response and be on-call for critical services related to sending and deliverability issues
Required qualifications
  • Strong backend engineering experience, particularly with high-volume delivery systems
  • Familiarity with SMTP, MTAs, DNS, and mailbox-provider behavior
  • Understanding of distributed systems, including queues, retries, and rate limits
  • Experience or strong interest in email best practices
  • Proficiency in Typescript and Golang is preferred

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