Deliverability Engineer, Core Sending

Other

• Resend is growing fast, and there are now over 2 million developers using it. As the Core Sending Squad, we are responsible for building and maintaining the core components of Resend that handle sending transactional and marketing emails.
• This role is fully remote-based in Americas time zones, with some expected travel for team off-sites, conferences, meetups, and more.
• Read more about how we work, how we hire, and what we value here .
• Have experience in email deliverability, reputation, mail operations, anti-abuse, or high-volume email systems
• Understand IP reputation, domain reputation, authentication, bounces, complaints, suppressions, and warmup
• Know how major mailbox providers behave and how to diagnose provider-specific delivery issues
• Can turn ambiguous deliverability judgment into metrics, policies, runbooks, dashboards, and systems
• Communicate clearly with engineering, support, product, customers
• Have low ego, strong judgment, and high ownership
• Have operated shared and dedicated IP pools
• Have designed or managed IP warmup programs
• Have recovered from provider blocks, spam-foldering issues, complaint spikes, deferral spikes, or blocklist events
• Have experience with Google Postmaster Tools, Microsoft SNDS/JMRP, Yahoo Sender Hub, feedback loops, or blocklist monitoring
• Understand DKIM, SPF, DMARC, PTR, TLS, DSNs, List-Unsubscribe, suppression, and bounce classification
• Understand IP reputation, domain reputation, authentication, bounces, complaints, suppressions, and warmup
• Have partnered with Trust & Safety, anti-abuse, support, or customer-facing teams
• Have helped build deliverability dashboards, reputation scoring, traffic segmentation, or automated enforcement systems
• Have experience helping engineering teams turn deliverability knowledge into product and infrastructure
• Autonomy to "just ship it"
• 100% remote team with flexible working schedules
• Modern tech stack (AWS, Next.js, Raycast, Notion, etc.)
• Honest and low-ego team
• Ownership of problems and solutions
• Comp: $150,000 - $180,000 USD, commensurate with experience
• We are building the modern email sending platform for developers. We care deeply about quality, craft, and the developer experience.
• Our fully remote team of 45 spans 13 countries and counting. We're backed by a16z, Y Combinator, and others. Meet the humans →