Backend Engineer, MTA

📋 Description Build, operate, and continuously improve email transport and delivery infrastructure. Develop systems for SMTP delivery, MTA operations, routing, retries, backoff strategies, and Design and maintain throttling mechanisms across domains, providers, customers, and IP addresses. Build infrastructure supporting shared IP pools, dedicated IPs, warmup execution, and Improve the classification and handling of bounces, deferrals, transient failures, hard failures Develop internal tools that make delivery issues easier to investigate across customers, domains 🎯 Requirements Strong professional experience in backend engineering. Experience working with email, messaging, notifications, communications infrastructure, or other Solid understanding of queues, workers, retries, idempotency, rate limits, backpressure, and Experience with, or a strong interest in learning about, SMTP, MTAs, DNS, bounces, deferrals, IP Strong focus on reliability, observability, operational excellence, and minimizing the potential A high level of ownership, low-ego collaboration, and a preference for simple, maintainable systems. 🎁 Benefits Fully remote position with flexible working schedules. Competitive compensation of $150,000–$170,000 USD, depending on experience. Autonomy and ownership to identify problems, develop solutions, and ship improvements. Opportunity to work with a modern technology stack including TypeScript, AWS, Go, PostgreSQL, and Collaborative, honest, and low-ego working environment. Meaningful ownership of critical infrastructure and technical decisions.