Resend

Build and operate email transport infrastructure focusing on SMTP delivery, routing, throttling, and incident response. | Strong backend engineering with distributed systems experience, proficiency in Typescript and Golang, and knowledge of email best practices. | 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 or European 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. In this role, you will… Build and operate Resend’s email transport infrastructure Work on SMTP delivery, MTA systems, routing, retries, backoff strategies, and delivery controls Design systems for domain-level, provider-level, customer-level, and IP-level throttling Build infrastructure for shared IP pools, dedicated IPs, warmup execution, and reputation-aware routing Improve how Resend classifies bounces, deferrals, transient failures, hard failures, and delivery outcomes Build tools that help the team debug delivery issues by customer, domain, mailbox provider, route, IP, message type, and event Help design systems that make sending behavior safer, more observable, and easier to operate Translate reputation strategy into backend systems Partner with Trust & Safety to build controls that protect Resend’s sending network from abuse Participate in incident response for sending, provider, and deliverability-sensitive issues Be on-call for critical services You will be a great fit if you... Have strong backend engineering experience Have worked on email, messaging, notifications, communications, infrastructure, or other high-volume delivery systems Understand queues, workers, retries, idempotency, rate limits, backpressure, and distributed systems Have experience or strong interest in SMTP, MTAs, DNS, bounces, deferrals, DNS, IP pools, and mailbox-provider behavior Care about reliability, observability, operational excellence, and reducing blast radius Have low ego, high ownership, and strong taste for simple systems You will be an exceptional fit if you also... Have experience working on applications with a high workload Know about email best practices, or are willing to learn more about this space Are experienced in Typescript and Golang What it means to join the team: Autonomy to "just ship it" 100% remote team with flexible working schedules Modern tech stack (Typescript, AWS, Go, Postgres, Datadog) Honest and low-ego team Ownership of problems and solutions Comp: $150,000 - $170,000 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 →

Build and operate email transport infrastructure and backend systems for high-volume email delivery. | Strong backend engineering experience with knowledge or interest in SMTP, MTAs, distributed systems, and operational excellence. | 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 or European 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. In this role, you will… • Build and operate Resend’s email transport infrastructure • Work on SMTP delivery, MTA systems, routing, retries, backoff strategies, and delivery controls • Design systems for domain-level, provider-level, customer-level, and IP-level throttling • Build infrastructure for shared IP pools, dedicated IPs, warmup execution, and reputation-aware routing • Improve how Resend classifies bounces, deferrals, transient failures, hard failures, and delivery outcomes • Build tools that help the team debug delivery issues by customer, domain, mailbox provider, route, IP, message type, and event • Help design systems that make sending behavior safer, more observable, and easier to operate • Translate reputation strategy into backend systems • Partner with Trust & Safety to build controls that protect Resend’s sending network from abuse • Participate in incident response for sending, provider, and deliverability-sensitive issues • Be on-call for critical services You will be a great fit if you... • Have strong backend engineering experience • Have worked on email, messaging, notifications, communications, infrastructure, or other high-volume delivery systems • Understand queues, workers, retries, idempotency, rate limits, backpressure, and distributed systems • Have experience or strong interest in SMTP, MTAs, DNS, bounces, deferrals, DNS, IP pools, and mailbox-provider behavior • Care about reliability, observability, operational excellence, and reducing blast radius • Have low ego, high ownership, and strong taste for simple systems You will be an exceptional fit if you also... • Have experience working on applications with a high workload • Know about email best practices, or are willing to learn more about this space • Are experienced in Typescript and Golang What it means to join the team: • Autonomy to "just ship it" • 100% remote team with flexible working schedules • Modern tech stack (Typescript, AWS, Go, Postgres, Datadog) • Honest and low-ego team • Ownership of problems and solutions • Comp: $150,000 - $170,000 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 →

Build and scale core infrastructure for high-volume email sending including distributed applications and asynchronous pipelines. | 8+ years backend engineering with cloud infrastructure focus, proficient in Typescript, Golang, and event-driven systems. | Resend is growing fast, and there are now over 1 million developers using it. We, in the Core Sending team, 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 UTC-5 to UTC0 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. In this role, you will… Help define the architecture to support millions of daily API requests Build and scale infrastructure to send dozens of millions of emails per day Improve high availability across distributed applications Scale databases like Postgres and Clickhouse to ensure that they are performant Enhance observability by using monitoring tools like Datadog Refine disaster recovery plans to ensure that recovery is quick and reliable Help to build our infrastructure with IaC frameworks like CDK and TF Work with Typescript and Golang Design and operate async pipelines (queues, streams, idempotency, retries, DLQs) that move tens of millions of messages per day Be on-call rotation (for critical services) You will be a great fit if you... 8+ years of back-end engineering with a focus on cloud infrastructure Are fluent in writing and speaking English Can consistently work in the Americas timezone Thrive in open-ended problems and situations Have supported large workloads on AWS You love helping other developers “Default to action” kind of person Hands-on on solving problems Experience with event-driven systems at scale. Kafka, SQS/SNS, or similar. Low ego You will be an exceptional fit if you also... Have experience working on applications with a high workload Know about email best practices, or are willing to learn more about this space Are experienced in Typescript and Golang What it means to join the team: Autonomy to "just ship it" 100% remote team with flexible working schedules Modern tech stack Honest and low-ego team Ownership of problems and solutions Comp: $120,000 - $140,000 USD, commensurate with experience Learn more about how we work: Autonomy to “just ship it” 100% remote team with flexible working schedules Honest and low-ego team Ownership of problems and solutions 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 40 spans 11 countries and counting. We're backed by a16z, Y Combinator, and others. Meet the humans →

Manage and automate internal processes, coordinate projects, handle vendor relationships and event planning. | Experience in operations, event planning, stakeholder management, and thriving in ambiguous, fast-growing remote environments. | Job Description: • Document and automate internal processes • Manage travel logistics, budgets, and expense workflows • Manage vendor relationships, renewals, and procurement • Coordinate projects that don't have a natural home on any single team • Plan and execute company events (offsites, build weeks, and Resend Conf) • Handle administrative tasks, from contracts to shipments to onboarding logistics Requirements: • Have managed events end-to-end • Have experience managing external stakeholders • Have a innate ability to simplifying complexity • Thrive in ambiguity and create order from chaos • Have experience in Ops, Finance, or Event Planning • Have a default to action mindset with a close attention to detail • Ready to be the face of the company to new employees, candidates, or vendors • Have worked in operations at a fast-growing, remote-first startup • Have planned international events or offsites for distributed teams Benefits: • 100% remote with flexible working schedules • No-meeting Wednesdays across the whole company • Twice-yearly team offsites (Florence, Barcelona, Lisbon, Cancun, Rio) • Work directly with founders and a small, low-ego team building something truly special

Investigate abuse patterns, analyze behavioral signals, build detection systems, define and monitor key metrics, create dashboards, and collaborate with data engineering and policy teams. | 3+ years in data or analytics roles ideally in security, fraud, or trust and safety, fluent in SQL and BI tools, experience with large datasets, strong measurement skills, and good communication. | Email is unlike any other medium in the world. With just an address, anyone can talk to anyone, no matter their location, status, or class. It’s democratized access, it’s a sacred privilege, and it’s worth protecting at all costs. Resend is building the most accessible email platform for developers. As we’ve grown to over 15K customers and continue to onboard thousands of new users every day, the pressure of maintaining a safe place for good senders continues to build up. As the first Data Analyst on our Trust & Safety squad, you will wear many investigative hats— identifying abuse patterns, analyzing behavioral signals, and developing scalable detection systems that prevent harmful users and enable good senders and scale. In this role, you will… Root-cause investigations of unexpected events or spikes Deeply understand and stay up to date on email abuse vectors and trends Define, instrument, and monitor key metrics: time to detect, false-positive rate, coverage, enforcement latency Build dashboards and reports for real-time and historical visibility into behavior and policy violations Analyze signal effectiveness: precision, recall, drift, overlap, etc Work with data engineering to shape data pipelines (ensuring data correctness, coverage, freshness) Partner with policy & ops to A/B test rule changes, evaluate trade-offs, and iterate Who You Are.. 3+ years in data or analytics roles (ideally in security, fraud, or trust and safety) Fluent in SQL + data tooling (e.g. Looker, Mode, Metabase, BI) Comfortable working with large event/data sets Strong sense of measurement: you build metrics that drive decisions Good communicator—can explain nuanced analytics to non-data folks You thrive in ambiguity, can build frameworks out of thin air Experience with estimation, sampling, statistical validation Learn more about how we work in Trust and Safety: Our Philosophy Our Philosophy for Anti-Abuse Our Tech Stack About Resend We are building the modern email sending platform for developers- we care deeply about quality, creating for everyone and building in the open. What started as an open source project in 2022, now onboard nearly thousands of users every day sending billions of emails. Our fully remote team of over 25 humans spans 7 countries.. and counting. We’re backed by a16z, Y Combinator, Basecase and other top investors. Read about how we work, how we hire, and what we value here.