Senior Full-Stack Engineer

PostQ; United States; Hybrid; USD 120,000 - 150,000; Full time

Job summary

PostQ is seeking an expert TypeScript engineer to own features across the stack, from the public PQC scanner to the customer dashboard and the Fastify REST API.

You will design endpoints used by JS/Python/.NET SDKs and a Go CLI, while shaping data models in Supabase and Postgres with row-level security. The role covers the full product surface and emphasizes API ergonomics and test-driven development.

Qualifications

• Expert TypeScript across the stack (front-end and back-end).
• Strong React/Next.js experience and Node.js backend familiarity.
• Solid SQL skills with data modeling and multi-tenant patterns.

Responsibilities

• Ship features across the Next.js 16 dashboard and Fastify API.
• Design REST endpoints consumed by SDKs and Go CLI.
• Own data modeling in Supabase/Postgres with row-level security.
• Keep scanner, inventory, vault, ledger, and policy flows fast and reliable.

Skills

TypeScript

React/Next.js

Node.js

API design

Tools

Supabase

Postgres

Turborepo

pnpm

Job description

Build the scanner, dashboard, and REST API end-to-end with Next.js 16, TypeScript, and Fastify.

You'll work across the whole product surface: the public PQC scanner, the customer dashboard, the Fastify REST API, and the SDKs that wrap it.

We care about clean contracts — the API is the source of truth for three SDKs and a Go CLI, so the interfaces you design ripple everywhere.

What you'll do

• Ship features across the Next.js 16 / React 19 dashboard and the Fastify 5 + Zod API
• Design REST endpoints that the JS/Python/.NET SDKs and Go CLI consume
• Own data modeling in Supabase/Postgres with row-level security
• Keep the scanner, inventory, vault, ledger, and policy flows fast and reliable

What we're looking for

• Expert TypeScript across the stack (React/Next.js on the front, Node on the back)
• Solid SQL and experience with row-level security or multi-tenant data models
• You write tests as you go and care about API ergonomics
• Comfortable owning a feature from schema to UI

Nice to have

• Experience with Supabase, Turborepo, or pnpm monorepos
• Interest in security / cryptography tooling

PostQ is remote-first. We evaluate candidates on demonstrated ability, not credentials — if you can do the work, we want to hear from you, regardless of background. We do not collect more than the application below needs, and resumes are stored privately.