Deliverability Engineer, Core Sending

Job description

Accountabilities: In this role, you will be responsible for strengthening and evolving email deliverability systems that support high-volume sending infrastructure. You will translate deliverability expertise into scalable backend systems, policies, and operational tools that ensure message reliability and reputation protection. Design and improve systems for email deliverability, including IP reputation, domain reputation, authentication, and bounce classification Build and maintain frameworks for monitoring sending behavior, including dashboards, metrics, and alerting systems Develop and optimize IP warmup strategies, shared and dedicated IP pools, and traffic segmentation logic Investigate and resolve deliverability issues such as spam-foldering, blocklisting, deferrals, and provider-specific delivery failures Collaborate with engineering and Trust & Safety teams to prevent abuse and enforce sending policies Convert ambiguous deliverability signals into structured systems, runbooks, and automated enforcement mechanisms Support incident response for critical delivery disruptions and ensure system resilience and observability Requirements: The ideal candidate brings strong expertise in email deliverability or high-volume messaging systems, with the ability to turn complex operational signals into structured engineering solutions. You combine technical depth with strong communication skills and ownership mindset. Proven experience in email deliverability, anti-abuse systems, mail operations, or high-scale messaging infrastructure Strong understanding of IP and domain reputation, SPF, DKIM, DMARC, bounce handling, complaints, suppressions, and warmup strategies Experience diagnosing deliverability issues across major mailbox providers and interpreting delivery signals Ability to design metrics, dashboards, policies, and systems from loosely defined deliverability challenges Familiarity with tools such as Google Postmaster Tools, Microsoft SNDS/JMRP, feedback loops, and blocklist monitoring Experience working with engineering, support, and customer-facing teams in cross-functional environments Strong communication skills, analytical thinking, and a high level of ownership and autonomy Bonus: experience with shared/dedicated IP pools, deliverability recovery incidents, or building automated enforcement systems Benefits: Fully remote work with flexible scheduling across Americas time zones Competitive compensation aligned with experience (USD-based package) Modern engineering stack and tools supporting high-performance development High autonomy with ownership over systems, products, and operational decisions Opportunity to work on large-scale email infrastructure used by millions of developers Collaborative, low-ego culture focused on craftsmanship and execution Exposure to cutting-edge challenges in deliverability, trust, and email systems How Jobgether works: We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team. We appreciate your interest and wish you the best! Why Apply Through Jobgether? Data Privacy Notice: By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time. #LI-CL1 This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Deliverability Engineer, Core Sending in Canada. This role sits at the heart of a fast-scaling email infrastructure platform responsible for delivering transactional and marketing emails at massive scale. You will help ensure that messages reliably reach inboxes by designing, operating, and improving systems that govern deliverability, reputation, and trust across sending networks. Working fully remotely with a globally distributed engineering team, you will collaborate closely with engineering, support, and anti-abuse specialists to transform complex deliverability challenges into scalable systems and actionable signals. The environment is highly technical, product-driven, and deeply focused on reliability, transparency, and developer experience. You will play a key role in shaping how sending behavior is monitored, controlled, and optimized across multiple providers and customer segments. This is an opportunity to directly influence the performance and trustworthiness of a modern communication platform used by millions of developers.