Email Infrastructure & Deliverability Engineer

EMPAT is looking for an Email Infrastructure & Deliverability Engineer to own the systems that send email at scale for a fast-growing ecommerce lifecycle marketing platform. The role covers building and operating high-throughput email sending services, managing sender reputation, and ensuring deliverability. The position is remote and full-time.

• Build and operate high-throughput email sending services, queues, and workers
• Implement retries, backpressure, prioritization, rate limits, and adaptive throttling
• Manage shared and dedicated IP pools, domain reputation, warm-up, and traffic routing
• Build domain onboarding for SPF, DKIM, DMARC, return-path, and tracking domains
• Process bounces, complaints, unsubscribes, suppressions, and ISP feedback loops
• Monitor throughput, queue latency, deferrals, bounce rates, complaints, and reputation signals
• Create automated guardrails that throttle, pause, reroute, or block unsafe sending
• Diagnose production issues across SMTP, DNS, providers, queues, and mailbox providers
• Own your systems end to end, including observability and incident response

• Strong backend or infrastructure engineering experience
• Production experience building or operating high-volume email systems, ideally at an ESP or marketing automation platform
• Deep knowledge of SMTP, bounces, complaints, deferrals, throttling, and mailbox-provider behavior
• Hands-on experience managing sender reputation across domains and IP pools
• Strong knowledge of SPF, DKIM, DMARC, DNS, domain alignment, and custom sending domains
• Experience with queues, distributed workers, idempotency, rate limiting, SQL, and Redis
• Ability to diagnose blocklists, spam complaints, authentication failures, and reputation changes
• Understanding of how list quality, engagement, spam traps, and customer abuse affect deliverability
• Clear communication and the ability to work autonomously in a small team

• Interesting project and technical challenges that support both professional and personal growth.
• A long-term project with stability and impact.
• A flexible, results-oriented schedule with hybrid or remote work options.
• A comfortable, modern office in Kyiv with generator and battery backup.
• Competitive salary, medical insurance, and a supportive onboarding/trial period.
• Team-building events, including parties, online activities, picnics, and more.
• The opportunity to work in a Top Employer company (DOU 2025).