Om Kumar

I’m a backend-focused software developer with hands-on experience building a federated messaging platform and automation workflows in a live production environment. I enjoy bridging protocol-level fundamentals with practical engineering that actually works for real users.

In my DecentraChat project, I implemented the ActivityPub federation model with WebFinger-based user discovery across independent server instances. I built inbox/outbox endpoints for federated delivery, designed the MongoDB schema for users, messages, and federation metadata, and integrated Socket.io to enable real-time message push.

I also focused on security at the transport layer and beyond. I implemented RSA-based HTTP request signing (Node.js + node-forge) following the HTTP Signatures spec, and built client-side encryption primitives using RSA-OAEP + AES-GCM via the Web Crypto API for future secure delivery.

For automation, I built and deployed UiPath workflows covering Excel processing, Outlook email handling, and PDF data extraction during my Software Developer Trainee (RPA) role. I wrote VB.NET logic inside UiPath, added exception handling and logging for production reliability, and debugged/optimized automations to reduce failures and manual re-runs.