Senior Systems Engineer - Email Deliverability & Infrastructure
Core
Architect and maintain high-availability email transmission infrastructure, focusing on server stability, authentication protocols, and defensive systems to ensure inbox placement and reputation management.
Role type
Senior Systems Engineer (Email Infrastructure & Deliverability)
Builds
High-availability mail server clusters, automated defensive systems, and reputation management pipelines
Domain
Email Infrastructure, Network Engineering, Security
Deliverable
production ML models | product features | infrastructure
Required skills
Linux Systems Administration, MTA configuration (Postfix, Postal, Dovecot), Network Engineering (TCP/IP, BGP, HAProxy), DNS & Authentication (SPF, DKIM, DMARC, BIMI), Security Filtering (Rspamd, Fail2Ban), Log Aggregation (Vector), Database Management (PostgreSQL)
Preferred skills
None stated
Technologies
Postfix, Postal, Dovecot, HAProxy, FRRouting, PostgreSQL, Rspamd, Fail2Ban, Vector, Google Postmaster Tools, Microsoft SNDS, Yahoo Sender Hub
Responsibilities
Maintain and optimize core MTAs and IMAP/POP3 servers for high availability; Architect traffic routing and load balancing mechanisms; Implement automated spam filtering and edge defense systems; Manage DNS authentication protocols and IP warm-up strategies; Monitor ISP infrastructure portals and deliverability metrics; Respond to blocklist listings and security incidents.
Seniority
Senior, hands-on IC