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Weekday (YC W21)

Founding Full-Stack Engineer

On site

San francisco, United states

$ 300,000 /year

Junior

Full Time

19-02-2026

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Skills

TypeScript GitHub CI/CD Docker react node.js AWS Next.js GCP Redis PostGres

Job Specifications

Location: San Francisco / On-site
Experience: 2–8 years
Stage: Seed → Series B

Compensation: $150k to $300k
Role type: Full-time
This role is for a client of Weekday
Why This Role Exists

You’ll help build the core product from the ground up. This is a hands-on role for someone who loves shipping, thrives in ambiguity, and wants ownership over major product surfaces at an early-stage company.

What You’ll Do

Build end-to-end product features across frontend and backend

Ship quickly in 0→1 environments

Design APIs, schemas, and workflows

Partner closely with founders, product, and design

Improve reliability, performance, and developer experience

Establish engineering best practices

Use modern AI developer tools to move faster (LLM copilots, agent workflows, testing automation)

Requirements

What We’re Looking For

Strong TypeScript, React, and Node.js

Experience shipping production web products

Startup or founding-engineer background (or equivalent)

Product-minded builder with high ownership

Comfortable working independently in small teams

Nice to Have

Next.js

Postgres / Redis

AWS / GCP

Experience integrating LLM APIs or AI tooling

Docker & CI/CD

Active GitHub presence

About the Company

We help companies hire engineers vouched by other techies. We are a sourcing engine on auto-pilot; where startups can not only find candidates and do outreach to them automatically but also get reference checks on them in an instant. After 4 days of signing up, they start getting candidates with ready back channel references on their calendar to interview. We are backed by Y-Combinator and were also ranked #1 on Product Hunt. Know more