Full-stack engineer

FAMLY; Region Syddanmark; Remote; DKK 735,000 - 1,002,000; Full time

Job summary

FAMLY is seeking an engineer to ship features across our pnpm monorepo, spanning a Next.js web app, a Fastify API, and shared JavaScript packages used by families. This role works in a real codebase with existing demo mode and live household data.

You will collaborate on calendar, meals, chores, money, co-parenting, and permissions, ensuring multi-user data integrity and offline-friendly behavior across devices, with Capacitor mobile integration when needed.

Qualifications

• Proficient JavaScript across modern frameworks.
• Experience with React/Next.js and a Node API.
• Familiar with Fastify or similar backend tech.
• Comfort working in a pnpm monorepo and shared packages.
• Experience with mobile shells (Capacitor) is a plus.

Responsibilities

• Ship features in the Next.js web app and Fastify API: calendar, meals, chores, money, co-parenting, and permissions.
• Keep household sync, roles, and Kids Mode access correct when more than one person is in the home.
• Work in the monorepo with pnpm and shared packages, and with the Capacitor mobile shell when a change has to reach phones.
• Leave the product calmer than you found it, noting and fixing bugs in a busy home environment.

Skills

JavaScript

React/Next.js

Node.js API

Fastify

pnpm monorepo

Capacitor mobile

Job description

About The Role

You would work across the FAMLY pnpm monorepo: Next.js in the web app, Fastify in the API, and the shared JavaScript packages households rely on. Demo mode and live household data already exist. The work is product in a real codebase, not a greenfield rewrite.

What you'll do

• Ship features in the Next.js app and Fastify API: calendar, meals, chores, money, co-parenting, and permissions.
• Keep household sync, roles, and Kids Mode access correct when more than one person is in the home.
• Work in the monorepo with pnpm and shared packages, and with the Capacitor mobile shell when a change has to reach phones.
• Leave the product calmer than you found it. Families notice bugs at 7:40 on a school morning.

What we're looking for

• Strong JavaScript across React and Next.js, plus a Node API. Fastify experience is a plus.
• Comfort with a pnpm monorepo, shared packages, and product code that already has opinions.
• Care about permissions, offline-friendly paths, and data that more than one adult can edit.
• Based in Europe or South Africa, with overlap across European and SAST hours.