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Senior Software Engineer
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### **About the Role**
We're a Y Combinator–backed, seed\-stage AI startup modernizing procurement and distribution for the defense, aerospace, and industrial sectors. Our small, high\-caliber team of \~15 embeds directly into client operations to build AI\-native systems that bring order to fragmented, legacy\-heavy environments — automating quoting, sourcing, and operational workflows at scale.
We're looking for a **Senior Software Engineer** to join our core platform team. This is a backend\-leaning full\-stack role where you'll design and ship end\-to\-end features across frontend UI, backend services and APIs, AI workflows, and database schemas — all in service of high\-value supply chain operations.
### **What You'll Do**
* Collaborate with the platform team and forward\-deployed customer\-facing engineers to design, build, and maintain robust full\-stack systems. * Integrate with complex legacy environments (ERP, CRM, supplier portals, spreadsheets, shared drives, and more). * Build and maintain backend services and RESTful or GraphQL APIs. * Develop frontend UIs using **Svelte** and **TypeScript**. * Design and optimize **PostgreSQL** schemas and write efficient SQL for data\-intensive workflows. * Contribute to AI workflows and validation systems that power real\-time operational intelligence. * Manage and deliver multiple projects in parallel within a collaborative, co\-located team environment. * Work closely with teammates across SF and Warsaw offices.
### **What We're Looking For**
**Required:**
* Up to 5 years of software development experience (we value depth and demonstrated impact over years alone). * Proficiency with **Svelte** and **TypeScript** for frontend development. * Strong experience with **PostgreSQL**, including schema design and efficient query writing. * Experience designing and implementing backend services and RESTful or GraphQL APIs. * Proven ability to integrate with legacy systems and complex technical environments. * Experience contributing to AI workflows and/or validation systems. * Comfort shipping full\-stack features end\-to\-end in a fast\-paced, ambiguous startup environment. * A collaborative mindset — this team moves fast and works closely together, both in\-person and across time zones.
**Nice to Have:**
* Experience working in or with distributed, multi\-location engineering teams. * Domain knowledge in supply chain, logistics, procurement, defense, or aerospace.
### **Compensation \& Benefits**
* **Salary:** $150,000 – $220,000 USD annually, depending on experience. * Equity participation in a well\-funded, early\-stage company. * Opportunity to work on genuinely hard technical problems with a high\-caliber, mission\-driven team.
*Note: Visa sponsorship is not available for this role.*
### **Location**
This is an **on\-site** role based in **San Francisco, CA**. Candidates must be willing and able to work from our SF office. Relocation to San Francisco is expected.
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