Backend Engineer – Infra, Core Sending

Resend

Backend Engineer for Resend, building core email sending infrastructure and ensuring performance. Responsible for defining architecture, scaling systems, and enhancing observability with modern tools.

Posted 5/29/2026full-timeRemote • 🇺🇸 United StatesSeniorLead💰 $150,000 - $170,000 per yearWebsite

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Hard Skills

API architecturecloud infrastructurePostgresClickhousemonitoring toolsDatadogInfrastructure as Code (IaC)CDKTerraformTypescriptGolang

Soft Skills

communicationproblem-solvingcollaborationadaptabilityleadershipmentorshipcritical thinkingtime managementcreativityresilience

Tools & Technologies

AWSKafkaSQSSNSevent-driven systemsasync pipelinesdistributed applicationsdisaster recoveryobservability toolsmonitoring systems

Industry Keywords

high availabilityscalabilityperformance optimizationemail infrastructuredata pipelinesidempotencyretriesdead letter queues (DLQs)large workloadsopen-ended problems

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 they are performant
Enhance observability by using monitoring tools like Datadog
Refine disaster recovery plans to ensure recovery is quick and reliable
Help build infrastructure with IaC frameworks like CDK and TF
Work with Typescript and Golang
Design and operate async pipelines (queues, streams, idempotency, retries, DLQs)

Requirements

What you’ll need

8+ years of back-end engineering with a focus on cloud infrastructure
Fluent in writing and speaking English
Ability to work in the Americas timezone
Ability to thrive in open-ended problems and situations
Experience supporting large workloads on AWS
Passion for helping other developers
Hands-on approach to solving problems
Experience with event-driven systems at scale (Kafka, SQS/SNS, or similar)

Benefits

Comp & perks

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