Backend Engineer, MTA
Core
Build and operate high-volume email transport infrastructure to ensure safe, reliable delivery for developers.
Role type
Senior Backend Engineer (Email Infrastructure)
Builds
Email transport systems, SMTP delivery pipelines, and reputation-aware routing infrastructure
Domain
Cloud Infrastructure / Email Delivery Systems
Required skills
Distributed systems, high-volume delivery systems, SMTP, MTA systems, DNS, queue management, idempotency, rate limiting, observability, incident response
Preferred skills
Typescript, Golang, email best practices, reputation strategy implementation
Technologies
AWS, Go, Postgres, Datadog, Typescript
Responsibilities
Design throttling systems at domain, provider, customer, and IP levels; build shared IP pool and warmup execution infrastructure; improve bounce and failure classification; debug delivery issues across multiple dimensions; partner with Trust & Safety on abuse controls; respond to critical sending incidents.
Seniority
Senior, hands-on IC