Backend Engineer (MTA), Core Sending
Resend $150K - $170K/year Posted about 2 months ago
About the role
Resend is growing fast, and there are now over 2 million developers using it. As the Core Sending Squad, we are responsible for building and maintaining the core components of Resend that handle sending transactional and marketing emails.
This role is fully remote-based in Americas or European time zones, with some expected travel for team off-sites, conferences, meetups, and more.
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
- Help design systems that make sending behavior safer, more observable, and easier to operate
- Be on-call for critical services
You will be a great fit if you...
- Have strong backend engineering experience
- Have worked on email, messaging, notifications, communications, infrastructure, or other high-volume delivery systems
- Understand queues, workers, retries, idempotency, rate limits, backpressure, and distributed systems
- Have experience or strong interest in SMTP, MTAs, DNS, bounces, deferrals, IP pools, and mailbox-provider behavior
What it means to join the team:
- 100% remote team with flexible working schedules
- Modern tech stack (Typescript, AWS, Go, Postgres, Datadog)
- Comp: $150,000 - $170,000 USD, commensurate with experience
Skills
How to apply
Apply directly on the employer's application page. Your application goes straight to them.
Republished listing
This opportunity was discovered on Resend's public careers page and is republished here for discovery purposes. Applications are handled by the employer.
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