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Deliverability Engineer, Core Sending at Resend. Remote Location: Americas / Remote / Full-time. 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. .. You will be a great fit if you.... 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. You will be an exceptional fit if you also.... 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. What it means to join the team:. 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. About Resend. 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 →