Job Context
We are seeking an cutting-edge, product-minded Full Stack Engineer with 1 to 3 years of experience and a genuine telecom messaging background to join our core engineering team. This is not a generic web role: you will work directly on the systems that push high volumes of traffic through SMPP binds to carriers and aggregators, and that deliver messages across OTT channels such as WhatsApp Business API, Viber, and Telegram — as well as the React interfaces our customers use to configure, monitor, and troubleshoot that traffic.
The ideal candidate has already shipped or operated an SMS gateway, messaging API, or channel integration in production, understands what breaks at scale (throughput ceilings, DLR mismatches, throttling, retries), and can carry a feature from carrier connection all the way to the customer-facing UI.

Job Responsibilities
• Telecom Messaging Infrastructure: Build, operate, and tune high-throughput SMS gateway services over SMPP v3.4 — bind management (TX/RX/TRX), windowing, throttling, submit/deliver reconciliation,



and routing across multiple carriers and aggregators.
• Channel Integrations: Integrate and maintain OTT messaging channels including the WhatsApp Business (Cloud) API, Viber Business Messages, and Telegram, covering template lifecycle, webhooks, media handling, and delivery/read receipts.
• Throughput & Reliability: Sustain and improve TPS targets under load — back-pressure, queue depth management, idempotent retries, graceful degradation, and instrumentation of submit, delivery, and failure rates.
• Frontend Development: Design and build highly responsive, intuitive Single Page Applications (SPAs) using React, ensuring clean state management and optimal client-side performance.
• Backend Engineering: Develop and maintain scalable server-side architecture using Node.js or Python.
• Asynchronous Workflows: Manage high-volume background jobs and message queues using Bull queue (Node.js) or Celery (Python).
• Real-Time Commun

📌 Full Stack Founding Engineer (India)
🏢 Digital Cloud Communications
📍 India