---
title: 'Backend Engineer, MTA at Resend'
canonical: 'https://feeny.ai/job/backend-engineer-mta-resend-europe-v8m8py8ghp9b'
type: 'job'
last_seen: '2026-10-16'
---

# Backend Engineer, MTA at Resend

- **Company:** Resend
- **Location:** Europe
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-09-30
- **Last confirmed live:** 2026-10-16
- **Apply:** https://jobs.ashbyhq.com/resend/c4c5eb8c-e6ac-49f5-9dc7-a68ce0948929

## Job 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
- 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, DNS, IP pools, and mailbox-provider behavior
- Care about reliability, observability, operational excellence, and reducing blast radius
- Have low ego, high ownership, and strong taste for simple systems

You will be an exceptional fit if you also...

- Have experience working on applications with a high workload
- Know about email best practices, or are willing to learn more about this space
- Are experienced in Typescript and Golang

What it means to join the team:

- Autonomy to "just ship it"
- 100% remote team with flexible working schedules
- Modern tech stack (Typescript, AWS, Go, Postgres, Datadog)
- Honest and low-ego team
- Ownership of problems and solutions
- Comp: $150,000 - $170,000 USD, commensurate with location and experience

## About Resend

We are building the modern email sending platform for developers. We care deeply about quality, craft, and the developer experience. Our fully remote team of 50 spans 15 countries and counting. We're backed by a16z, Y Combinator, and others. [Meet the humans →](https://resend.com/humans)

## About Resend

## Company Overview
- **One-liner**: Resend provides a modern email API for developers to build, test, and send transactional and marketing emails at scale.
- **Entity Type**: Private (Series A)
- **Headquarters**: San Francisco, California, USA
- **Founded**: 2023
- **Founders**: Zeno Rocha (CEO), Bu Kinoshita (CTO), Jonni Lundy

## Core Business
- Primary industry: Developer tools / Email infrastructure (Communication API)
- Target customers: B2B, primarily developers and engineering teams at startups, SMBs, and enterprises
- Mission statement: Reimagine email for the modern web — building the best communication platform for developers

## Products & Services
- **Email API**: A RESTful API for sending transactional and marketing emails at scale, with SDKs for Node.js, Python, PHP, Ruby, Go, Java, Laravel, Rust, and .NET.
- **React Email (open source)**: A library (5.1k+ GitHub stars) that lets developers code email templates using React components instead of outdated HTML layouts.
- **Resend CLI**: Command-line tool for sending emails directly from the terminal.
- **Deliverability Engine**: Infrastructure focused on inbox placement and avoiding spam folders, backed by SOC 2 compliance and GDPR adherence.

## Market Standing
- **Valuation/Total Funding**: $18M Series A (announced December 4, 2024)
- **Key Metric**: Total funding raised — $18M Series A
- **Notable Investors/Partners**: Y Combinator (Winter 2023 batch), with backing from "incredible investors" including Diana Hu (YC primary partner)
- **Growth Signals**: Launched in 2023, grew to 45 team members as of mid-2025; Y Combinator backing; open source community traction (React Email); challenger brand in a market dominated by SendGrid, AWS SES, and Postmark

## Competitive Advantages
- **Developer-first experience**: React-based email components, modern API design, and extensive SDK support set them apart from legacy providers.
- **Open source community**: React Email has strong adoption (5.1k+ stars) and creates a natural pipeline to the paid API.
- **Deliverability focus**: Deep investment in inbox placement technology, a known pain point for developers.
- **Challenger mindset**: Actively rethinking email infrastructure from scratch, not just copying incumbents.

## Strategic Focus
- **Default to action**: Company culture emphasizes shipping fast, iterating quickly, and taking initiative without permission.
- **Remote-first**: Fully remote company with async communication, two annual offsites, and timezone overlap within the Americas.
- **Quality obsession**: Focus on craft, attention to detail, and delighting developers — challenging the "good enough" status quo in email.
- **Growth stage**: Post-Series A, actively hiring across engineering (Backend, Security, Product, Deliverability) to scale the platform.

## Why Work Here
- **Remote-first culture**: Fully remote with async communication, no plans for mandatory offices. Two annual in-person retreats.
- **Engineering philosophy**: "Default to action" — makers ship PRs, not wait for permission. Emphasis on speed, iteration, and quality.
- **Benefits (Global)**: 20 PTO days/year, 12-week family leave, unlimited sick days, 10 holidays/year (choose US or local), $2,000 home office allowance, annual retreat.
- **Benefits (US-only)**: 100% employee / 90% family health/dental/vision coverage, 401K account (no matching), life insurance.
- **Team size**: ~45 people (as of mid-2025) — early-stage energy with significant traction.
- **Culture values**: No ego, confident curiosity, challenge the status quo, use resources available — documented in a public handbook.

## Sources
1. [resend.com](https://resend.com/)
2. [resend.com/about](https://resend.com/about)
3. [resend.com/careers](https://resend.com/careers)
4. [resend.com/handbook/people/how-we-work](https://www.resend.com/handbook/people/how-we-work)
5. [ycombinator.com/companies/resend](https://www.ycombinator.com/companies/resend)

## Other roles at Resend

- [Platform Engineer](https://feeny.ai/job/platform-engineer-resend-europe-5y2j59c2jhq0) — Europe
- [Platform Engineer](https://feeny.ai/job/platform-engineer-resend-americas-9sqar9rz4e5s) — Americas
- [Software Engineer, Trust & Safety](https://feeny.ai/job/software-engineer-trust-safety-resend-europe-7qep4b2gg90q) — Europe
- [Software Engineer, Trust & Safety](https://feeny.ai/job/software-engineer-trust-safety-resend-americas-1xch1q3442md) — Americas
- [Software Engineer, Developer Tools](https://feeny.ai/job/software-engineer-developer-tools-resend-europe-r51zeekcwcf0) — Europe
- [Software Engineer, Developer Tools](https://feeny.ai/job/software-engineer-developer-tools-resend-americas-1pz1zhqjk2mw) — Americas
- [Backend Engineer](https://feeny.ai/job/backend-engineer-resend-europe-0hgb8bqh5nx4) — Europe
- [Backend Engineer](https://feeny.ai/job/backend-engineer-resend-americas-c544p6pd99en) — Americas
- [Technical Account Executive](https://feeny.ai/job/technical-account-executive-resend-americas-hhc3a70ks1c0) — Americas
- [Customer Success Engineer](https://feeny.ai/job/customer-success-engineer-resend-americas-8z9m92e7d9f2) — Americas