Backend / Email Infrastructure Developer

Domain Management – multiple domains with lifecycle states: Warming, Live, Cooldown, Recovery, Disabled Mailbox Management – health score, daily limits, sending volume, bounce/complaint/engagement metrics IP/IP Pool Management – volume, reputation, associated domains and health monitoring Intelligent Routing – select eligible domain, mailbox and IP based on health, limits and historical performance Warm-up Engine – configurable gradual increase in sending capacity with automatic adjustment based on health Reputation/Health Scoring – 0–100 score for domains, mailboxes and IPs Automatic Recovery – reduce/pause sending and move resources into cooldown/recovery when health deteriorates Monitoring & Reporting – dashboards, alerts, metrics and audit logs Expected Deliverables Complete system architecture Database/schema design Domain, mailbox and IP lifecycle logic Routing engine Warm-up engine Reputation/health scoring algorithm REST API structure Infrastructure & technology recommendations Scalable production architecture