Backend Engineer, MTA
- Where you can live
- Americas · Europe
- Working hours
- Overlap with UTC-1 to UTC+3
- Salary
- USD 150,000 to 170,000 per year
- Posted
- September 30, 2026
Summary from the posting
Build and operate Resend’s email transport infrastructure
Work on SMTP delivery, MTA systems, routing, retries, backoff strategies, and delivery controls
Design systems for domain-level, provider-level, customer-level, and IP-level throttling
Build infrastructure for shared IP pools, dedicated IPs, warmup execution, and reputation-aware routing
Improve how Resend classifies bounces, deferrals, transient failures, hard failures, and delivery outcomes
Build tools that help the team debug delivery issues by customer, domain, mailbox provider, route, IP, message type, and event
Help design systems that make sending behavior safer, more observable, and easier to operate
This is a short summary. The full description, requirements and the application form are on Resend's own career page.