Senior Full Stack JavaScript (Next/Node) Engineer

We’re hiring a Full-Stack Engineer to join a growing team working on a modern, multi-tenant SaaS platform. You’ll be responsible for maintaining and extending both backend systems and frontend applications that power core business functionality, support partner integrations, and drive real-time user interactions.

This is a hybrid role focused on both long-term maintainability and iterative feature development. You’ll work across multiple deployments, each with their own configurations and access rules, all supported by a unified codebase and database.

Key Responsibilities

• Maintain and extend a modular multi-tenant backend built with Node.js and Express
• Work on a Next.js-based frontend (App Router) with TypeScript, React, and dynamic configuration per deployment
• Build and maintain secure API integrations with third-party services and infrastructure providers
• Implement and evolve role-based admin panels, user dashboards, and billing views
• Handle real-time data flows, background processes, and scheduled jobs
• Track and process financial transactions, platform-specific pricing, and margin handling
• Write efficient MongoDB queries and manage schema evolution in a shared DB
• Debug production issues and collaborate with the infrastructure team to ensure uptime and reliability

Tech Stack

• Frontend: Next.js (App Router), React, TypeScript, CSS Modules
• Backend: Node.js, Express.js, MongoDB, Mongoose
• APIs: RESTful APIs, third-party integrations, external infrastructure services
• Security: JWT, API key auth, platform-based access controls, secure environment handling
• DevOps: Git, background job queues, logging, cron jobs, basic cloud infra