# Backend Engineer, MTA at Resend

- Company: Resend
- Status: Open
- Workplace: Remote
- Location: Europe · Remote
- Level: Mid-level
- Discipline: Backend
- Employment: Full-time
- Posted: 2026-09-30
- Skills: Engineering
- Apply: https://jobs.ashbyhq.com/resend/c4c5eb8c-e6ac-49f5-9dc7-a68ce0948929

## Description

Resend is building the most accessible email platform for developers. As we’ve grown to 4M+ users and continue to onboard thousands of new users every day, the pressure of maintaining a safe place for good senders continues to build.

This role is fully remote-based in Americas or European time zones, with some expected travel for team off-sites, conferences, meetups, and more.

Read more about how we work, how we hire, and what we value here https://resend.com/handbook.




IN THIS ROLE, YOU WILL…

 - 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

 - Translate reputation strategy into backend systems

 - Partner with Trust & Safety and Core Sending to build controls that protect Resend’s sending network from abuse

 - Participate in incident response for sending, provider, and deliverability-sensitive issues

 - Be on-call for critical services




YOU WILL BE A GREAT FIT IF YOU...

 - Have strong backend engineering experience

 - H

More Resend roles: https://deviantjobs.com/companies/resend