Senior/Staff Software Engineer (Platform)

About the Role You'll build the software backbone powering autonomous manufacturing operations at a seed-stage AI supply chain startup. As a Senior or Staff Software Engineer on the Platform team, you'll design scalable backend services, data pipelines, and integrations that coordinate AI-powered agents and high-stakes transactions across complex supply chain workflows, directly enabling physical goods to move reliably through manufacturing systems. What You'll Do • Design and scale backend services using Next.js API routes, background jobs, and serverless functions to handle high-throughput order processing. • Build and productionize LLM-based agents, AI/ML infrastructure, and RAG patterns for intelligent quote analysis and supplier recommendations. • Own the data layer by designing PostgreSQL schemas, migrations, and complex queries for materials, quotes, orders, and supplier relationships. • Architect event-driven systems with reliable pipelines for order state management, notification triggers, and cross-system synchronization. • Implement caching and rate limiting strategies to ensure reliable external API calls at scale. • Establish monitoring, alerting, and observability patterns while owning incident response for backend systems. What We're Looking For • 5 or more years building backend services, data pipelines, or platform infrastructure in production environments. • Strong TypeScript and Next.js hands-on experience, with recent, direct involvement in web development. • Demonstrated experience designing systems with transactional guarantees (ACID semantics, exactly-once processing) and idempotent APIs. • Experience building NLP/ML pipelines for data extraction from unstructured documents, including OCR and information extraction. • Experience designing and scaling PostgreSQL or relational database schemas for transactional workloads. • Experience building event-driven systems, message queues, or reliable pipelines for state management and cross-system synchronization. • Experience integrating with ERP systems (SAP, Oracle, or similar) and third-party APIs, including legacy or poorly documented interfaces. • Direct, recent hands-on AI experience including agentic frameworks alongside web development work. • Professional experience in manufacturing supply chain, procurement, or logistics domains. • Comfort operating on a very small, fast-moving team with flexibility and a generalist mindset. • Experience with Supabase or similar managed PostgreSQL platforms is a plus. • Experience with RAG patterns or similar AI/ML infrastructure is a plus. • Prior experience as a founder or founding engineer at a startup is strongly preferred. • Strong computer science fundamentals. Compensation & Benefits • Salary: $160,000 to $250,000 annually (USD), depending on level and experience. • Visa sponsorship is available. Location Fully remote (United States). Being based in or willing to work in San Francisco, California is preferred.