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Sendblue (YC S23) is hiring senior engineers
We’re looking for a seasoned full-stack engineer to lead feature development across our Node.js, React, and PostgreSQL stack. You'll own projects end-to-end—from schema design to backend APIs—ensuring our platform remains fast, scalable, and reliable. What You’ll Do Ship high-quality code across Node.js/Express backends and React frontends. Architect and optimize PostgreSQL databases: schema design, complex SQL, and performance tuning. Build dynamic, high-performance React components using hooks and modern tooling. Design and implement robust REST and real-time APIs (WebSockets). Incorporate Redis for caching, queues, and high-throughput workflows. Translate product ideas and customer feedback into scalable features. Improve system observability: logs, metrics, and alerts. Contribute to sprint planning and raise the bar on team velocity and code quality. What We’re Looking For 4+ years of experience building and deploying full-stack applications in production. Expertise in PostgreSQL: schema design, window functions, complex joins, query tuning. Solid experience with Redis for caching or pub/sub use cases. Strong system design skills; experience architecting systems independently. Clear, concise communication and a bias for shipping. Nice to Have Experience with Next.js, TypeScript, GraphQL. Familiarity with Docker, Kubernetes, and CI/CD pipelines. Background in real-time messaging or event-driven systems. Startup experience, especially in high-growth environments.
New York, NY, US / Remote (US)Apply to Sendblue and hundreds of other fast-growing YC startups with a single profile. That’s where Sendblue comes in – we provide a virtual iMessage line directly in a business’ CRM which they can use to message their leads and clients. Our goal is to provide an over the top experience for our customers in every way, from giving them technology they can’t access anywhere else to ensuring their workflows and sales processes are actually effective.
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