Senior Next.js Full-Stack Engineer | Remote

Ruby Labs Ltd; Jakarta Pusat; Remote; IDR 1,088,139,000 - 1,813,565,000; Full time

Benefits offered by this job

Remote work

Unlimited PTO

Paid national holidays

MacBook provided

Contractor agreement

Job summary

Ruby Labs Ltd is seeking a disciplined Middle Next.js Developer to build features for a core D2C subscription product. You will own features end to end in a TypeScript monorepo, including Next.js, Fastify + Payload CMS API on PostgreSQL, and Cloudflare Workers at the edge.

You will work with strict conventions, deliver production‑grade code, and escalate architectural decisions to senior engineers. This role emphasizes maximum autonomy and collaboration across the team.

Qualifications

• 2+ years of commercial React experience with 1+ year in Next.js (App Router, Server Components).
• Strong TypeScript skills and a solid understanding of REST APIs and HTTP basics.
• Backend experience with Node.js on a typed framework (Fastify, Nest, or Express) and PostgreSQL.
• Experience with modern client stack and testing: Vitest/Jest, Cypress/Playwright.
• English proficiency at B1+ level.

Responsibilities

• Develop features across Next.js client and Fastify + Payload CMS backend.
• Follow Feature‑Sliced Design conventions and ship behind feature flags.
• Write tests, conduct self‑reviews, and ensure production quality.
• Optimize performance, security, and observability of the product.
• Collaborate with senior engineers on architectural decisions and risks.

Job description

Ruby Labs Ltd is seeking a disciplined Middle Next.js Developer to build features for a core D2C subscription product. You will own features end to end in a TypeScript monorepo, including Next.js, Fastify + Payload CMS API on PostgreSQL, and Cloudflare Workers at the edge.

You will work with strict conventions, deliver production‑grade code, and escalate architectural decisions to senior engineers. This role emphasizes maximum autonomy and collaboration across the team.