Selected work
Things I've built & shipped
Mostly real-time voice and telephony systems. The details are abstracted — but everything here runs (or ran) in production.
Real-time voice AI agents
Live in productionSuperfone · 2025 – present
Voice agents that answer live phone calls — speech in, reasoning, speech out, in under a second — for businesses across India's many languages.
StrawGo — a real-time voice AI framework in Go
Open sourcesquare-key-labs · 2025 – present
My open-source Go framework for building real-time conversational voice agents — a frame-based pipeline that fits far more concurrent calls on a machine than the Python tools it learns from.
Cloud telephony platform
Live in productionSuperfone · 2021 – present
The call-control backbone of a virtual business-phone platform — SIP at the edge, call-flow orchestration, billing, and the APIs that tie thousands of businesses' phone numbers together.
The Superfone iOS app
Live on the App StoreSuperfone · 2026
Built the native iOS app from an empty Xcode project to a live App Store release in under three weeks — CallKit, offline-first data, and real SIP/PSTN calling.
Capstrix — a voice-data marketplace
LiveCapstrix · 2026 – present
A product I'm building solo — a marketplace for consented, native-speaker code-switched speech (Hinglish, Tanglish, Banglish) that voice-AI teams can't get anywhere else. Mobile capture app, edge API, admin console, and an automated audio-QA pipeline.
The Superfone Android app
Shipped to the Play StoreSuperfone · 2021 – present
The original Superfone dialer — a business soft-phone that rings real SIP calls, built in Kotlin on the Linphone stack and maintained across thousands of commits since 2021.
VoIP infrastructure foundation
In productionSuperfone · 2021 – 2024
Standing up the telephony backbone — Asterisk for media, Kamailio as the SIP edge, RTPEngine for media relay — from first deployment to a multi-datacenter, multi-carrier setup.
SoftFlow — a React Native softphone
R&D2025
A from-scratch VoIP softphone built in React Native — real SIP calling over WebRTC, with native call UI on the lock screen, hold/mute/audio-routing, and the background plumbing that keeps a call alive.
Browser-based web dialer
BuiltSuperfone · 2026
A SIP soft-phone that runs in the browser — so you can take and make business calls from a web dashboard, no app install required. The third call surface alongside Android and iOS.
WebRTC & real-time comms R&D
Open source / R&D2024 – 2025
A side track exploring WebRTC media servers and cross-platform SIP — open-sourced as a Janus gateway wrapper and a reusable Linphone module for React Native.
E-commerce catalog & inventory backend
Shipped to production2026
Contract work — a backend that ingests a 1GB+ book distributor catalog over SFTP, parses daily deltas, and keeps a storefront's inventory in sync.
Open source
Open source2023 – present
Developer tools I've published — a Claude Max proxy on npm, a collection of agent skills, and native modules pulled out of real VoIP work.