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TechTree · San Francisco, CA

Core Engineer

seniorfull time$150,000 – $220,000 / yearPosted yesterday
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Stack mentioned

excelsveltetypescriptpostgresqlgithubjavascriptreactnext.jssqlpython

About The Role

Build the AI-native operating system replacing 1980s supply chain infrastructure for defense, aerospace, and industrial distributors. SF, on-site, YC W25.

The mission

America's industrial base runs on systems built in the 1980s. Billions of dollars in critical components — F-35 parts, industrial assemblies, electronics, bolts, hoses — still move through email threads, Excel sheets, and disconnected ERPs.

We're replacing that with an AI-native platform that makes defense, aerospace, and industrial supply-chain operations nearly autonomous. Faster quoting. Faster procurement. Full visibility. Real operational intelligence for the companies our nation depends on.

Quick Facts

YC W25 company — top 5% growth in batch

Raised $10M+ from Paul Graham, SV Angel, Pear VC, and CRV

Team of 20 co-living in SF & Warsaw Hacker Houses

7-figure ARR transacting ~$50M a week through our system

The role

Our Core Engineers work closely with the platform team and customer-facing forward deployed teams to design, build, and maintain robust full-stack systems that integrate with complex legacy environments and support high-value, high-impact supply chain operations.

Full-time, in-person in San Francisco — this is not a remote role

Backend-leaning full-stack using Svelte / TypeScript / Postgres

Design, develop, and maintain full-stack application functionality end-to-end

Organise, track, and deliver multiple projects in parallel

What we're looking for

Absolute grinder — motivated by hard problems, not comfortable processes

Comfortable with ambiguity and rapid change

Track record of shipping fast

Experience architecting systems independently

Motivated by taking an unknown problem, sinking your teeth in, and coming up with a plan of attack

Ready to show at least one full-stack project (GitHub repo, web app, or Loom demo)

Proficiency in TypeScript, JavaScript, and at least one frontend library (React, Svelte, Next.js, etc.)

Strong knowledge of SQL databases — preferably Postgres; proficient at writing, optimising, and troubleshooting complex queries

Strong understanding of software engineering best practices: version control, testing, documentation

Ability to work effectively in fast-paced, high-accountability environments

Low ego, curious, and intellectually honest — focused on outcomes, not "being right"

Any experience level welcome — new grads considered.

The process

Initial call with engineer → Technical screening → Quick call with founder → Fly out to SF HQ for onsite (on us) → Offer

Compensation

$150K–$220K base salary

0.15%–0.20% equity

US citizens / visa holders only

Required Skills

- TypeScript

- Svelte

- PostgreSQL

- Full-stack

- Python

- React

- Next.js

Salary: SalaryCurrency.USD 150K - 220K

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