Fullstack Engineer (ReactJS/NodeJS) - Remote

Senior Fullstack Engineer to own, build, and scale core Periskope products across web, mobile, AI, and infrastructure with end-to-end responsibility.

Company Details
Periskope is building Superhuman for WhatsApp, helping businesses manage WhatsApp operations at scale across 100+ countries. Profitable, fast-growing SaaS with strong AI focus.
Website: https://periskope.app/

Requirements

• 3–5 years of fullstack engineering experience

• Strong ownership mindset with ability to work without PMs

• Experience with NextJS, Node.js, Express

• Strong knowledge of Postgres (Supabase preferred)

• Experience with React Native

• Hands-on experience with AI systems and agents

• Familiarity with Claude Code, Gemini, and GCP

• Experience building and scaling production systems

Responsibilities

• Own end-to-end delivery of complex product modules

• Build and deploy AI agents on WhatsApp with tool calling and knowledge bases

• Design and implement usage-based billing with Chargebee

• Refactor and optimize NextJS web and desktop applications

• Launch and scale mobile applications using React Native

• Manage and scale infrastructure on GCP

• Interface directly with customers for bugs and feature feedback

• Mentor and guide junior engineers

Job Details
Remote

Interview Process

• Intro Call

• Technical Round

• System Design Round

• Founder Round

Important Note
ClanX is a recruitment partner, helping Periskope hire a Fullstack Engineer.