Backend Engineer – Core Sending

Resend

Backend Engineer working on core components of Resend's email sending platform. Scaling infrastructure and improving availability for millions of API requests and email deliveries.

Posted 5/7/2026full-timeRemote • 🇺🇸 United StatesSeniorLead💰 $120,000 - $140,000 per yearWebsite

Tech Stack

Tools & technologies

AWSCloudGoKafkaPostgresTypeScript

About the role

Key responsibilities & impact

Help define the architecture to support millions of daily API requests
Build and scale infrastructure to send dozens of millions of emails per day
Improve high availability across distributed applications
Scale databases like Postgres and Clickhouse to ensure that they are performant
Enhance observability by using monitoring tools like Datadog
Refine disaster recovery plans to ensure that recovery is quick and reliable
Help to build our infrastructure with IaC frameworks like CDK and TF
Work with Typescript and Golang
Design and operate async pipelines (queues, streams, idempotency, retries, DLQs) that move tens of millions of messages per day
Be on-call rotation for critical services

Requirements

What you’ll need

8+ years of back-end engineering with a focus on cloud infrastructure
Fluent in writing and speaking English
Can consistently work in the Americas timezone
Thrive in open-ended problems and situations
Have supported large workloads on AWS
Love helping other developers
“Default to action” kind of person
Hands-on on solving problems
Experience with event-driven systems at scale (Kafka, SQS/SNS, or similar)
Low ego

Benefits

Comp & perks

Autonomy to "just ship it"
100% remote team with flexible working schedules
Modern tech stack
Honest and low-ego team
Ownership of problems and solutions

ATS Keywords

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Hard Skills & Tools

API architecturecloud infrastructurePostgresClickhousemonitoring toolsDatadogInfrastructure as Code (IaC)CDKTerraformTypescriptGolang

Soft Skills

problem-solvingcommunicationcollaborationadaptabilityproactivitysupportivelow egothrive in open-ended problemson-call readinesshands-on approach