Senior Full Stack Engineer - AI-Native Defense Tech Platform

Role: Senior Full Stack Engineer – AI-Native Defense Tech Platform

Location: San Francisco, CA | On-site (5 days) | Full-Time

Compensation: $165K – $235K base + competitive equity (0.15–0.2%)

About the Company

I'm partnering with a fast-growing, YC W25-backed defense tech startup (15 people, $5M funded, backed by CRV and Pair) to find a Senior Full Stack Engineer to join their core platform team in San Francisco. This company builds AI-native supply chain automation software used by defense, aerospace, and industrial distributors — and every client gets a custom-built version of the platform tailored to how their sales team actually works. This isn't generic SaaS. It's precision engineering for a high-stakes sector. Think: close-knit team, zero bureaucracy, high ownership, and a culture that does hibachi dinners with investors on weekends.

About the Role

Building full-stack features across frontend (Svelte/React), backend APIs, and Postgres — end-to-end and independently.

Responsibilities

• Diagnosing and rearchitecting complex problems (slow-loading pages, form logic, system design)
• Collaborating with Forward Deployed Engineers to turn client issues into next-day fixes
• Integrating AI/LLM workflows (Cursor, Claude, Codex) directly into production as part of your daily flow
• Owning multiple projects in parallel with real architectural decision-making power

Qualifications

• 1–4 years in full-stack or product engineering
• TypeScript/JavaScript + PostgreSQL — strong SQL is non-negotiable
• Experience with Svelte, React, or Next.js
• Shipped at least one full-stack project end-to-end (GitHub, live app, or Loom demo required)
• AI-native: you actively use tools like Cursor, Claude, or Codex daily — not just in theory
• Startup experience with real ownership

If you want to know more about this role please apply below and I will be in contact to discuss the role further.