Senior Backend Engineer

Paper Run is an early-stage startup reinventing how eCommerce brands engage customers through automated direct mail. We’re looking for a Senior Full Stack (Backend) Engineer who thrives on building clean, scalable systems quickly. You’ll play a key role in shaping our backend architecture—from API design and data pipelines to job processing and observability. Design and build robust backend systems Architect scalable infrastructure for job processing, analytics, and event tracking Build internal tooling for rate limiting, quotas, and authentication Design, develop, and maintain APIs and backend services Collaborate closely with product, design, and CX to deliver exceptional features Optimize for performance, security, and scalability Stay current with emerging technologies and apply them thoughtfully Languages: Python, TypeScript Infrastructure: AWS (ECS, SQS, Parameter Store), Docker, GitHub Actions Monitoring: LogFire, Sentry CI/CD: GitHub Actions About You 4+ years of experience building production-grade backend systems Skilled at writing clear, maintainable code with solid abstractions Confident designing databases, APIs, and infrastructure Experience with high-throughput systems or background job queues Strong sense of end-to-end ownership—code, infra, tests, monitoring are deeply about developer experience for your teammates Experience with rate limiting, authentication systems, or quota tracking Familiarity with analytics & attribution engineering (e.g., dbt, Snowflake, event tracking) Experience building WYSIWYG editors Knowledge of PDF generation, render jobs, and image editing. Experience with SSR frameworks (Next.js, Remix) Join the Paper Run squad. Join the Paper Run squad. We're building Paper Run to help e-commerce brands reach and retain customers. Today, Paper Run serves hundreds of your favorite DTC brands. We're a global team and would love to have you help shape the journey with us. #J-18808-Ljbffr