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Devang Gupta — Software Engineer

I build things that do things.

Mobile.Systems.AI.

Available now for full-time engineering roles. Based in Mumbai, India, open to remote or on-site.

Autonomous agents & production platformsScroll to explore
Builds
Multi-agent AI products, real-time voice agents, Android apps and native audio drivers.
Stack
TypeScript, Next.js, React Native, Python, FastAPI, Kotlin and C++.
Shipped
An Android app on Google Play, a voice agent you can call from the browser, and an open-source USB audio driver.
Status
Available now for full-time roles. Mumbai, India, open to remote or on-site.
STARZ Mobile Application Overview

01 / 04STARZ AI EngineFLAGSHIP SUITE

The Agent Architecture

01 / 04

The suite on a phone, whole

Engineered a synchronized ecosystem of AI agents that independently manage local search ranking, web presence, and customer conversation from a single unified interface.

02 / 04

Three agents, each running on its own card

Architected multi-agent orchestration layer

03 / 04

Onboarding into the workspace

Built the mobile client and shipped it to Google Play

04 / 04

Shared telemetry, read across every agent

Integrated cross-agent shared telemetry state

  • Next.js
  • Python
  • FastAPI
  • Meta Graph API
  • Tailwind CSS
STARZ AI Rank Dashboard

01 / 04STARZ AI EngineLOCAL SEARCH AGENT

AI Rank Optimization

01 / 04

The local search audit console, whole

Audits Google Business Profile health, tracks local search visibility, and generates the keyword and content changes that move a listing up the local pack.

02 / 04

Profile health scored, with monthly reach

Implemented DIBIL profile health score and audit view

03 / 04

Keyword audit against ranked competitors

Built geo-ranking keyword audit and competitor grid

04 / 04

Map queries and action telemetry

Integrated map and action telemetry metrics

  • Next.js
  • FastAPI
  • Maps API
STARZ AI Pages Generator

01 / 04STARZ AI EngineWEB AGENT

AI Landing Page Generator

01 / 04

The page generator, whole

Generates complete conversion-focused landing pages from a business profile, with integrated lead capture and mobile-first layouts, ready to publish.

02 / 04

A landing page generated on the canvas

Built landing page generation and visual builder canvas

03 / 04

Leads landing in the capture rail

Constructed integrated lead capture telemetry

04 / 04

The mobile-first preview container

Engineered responsive preview container

  • Next.js
  • Tailwind CSS
  • FastAPI
STARZ WhatsApp and Review Automation Panel

01 / 04STARZ AI EngineCONVERSATIONAL AGENT

WhatsApp & Review Automation

01 / 04

The conversation console, whole

Answers inbound WhatsApp conversations automatically and posts replies to Google Business Profile reviews and comments, keeping every thread handled and scored without a human in the loop.

02 / 04

Inbound WhatsApp, answered as it streams

Built WhatsApp automation with streaming generated replies

03 / 04

Review and comment replies posted back to Google

Automated Google Business Profile review and comment responses

04 / 04

Lead qualification, scored 85 out of 100

Constructed lead qualification scoring across both channels

  • Next.js
  • WhatsApp API
  • WebSockets
  • FastAPI
Starz ecosystem — conclusion

Three AI systems. One product ecosystem.

From Google Business Profile ranking to generated landing pages to automated WhatsApp and review replies — all unified in one full-stack architecture.

Built as part of Starz Ventures. All rights reserved by the company.

AI Calling Agent workspace with live voice demo, campaign lead upload and lead pipeline

02 / 04AI Calling AgentREAL-TIME VOICE AI

A Voice Agent That Books Meetings

01 / 04

The calling workspace, whole

An outbound voice agent that calls leads, finds out what their business needs, and books a 20-minute strategy call through Calendly when they're interested. It runs live, so anyone can talk to it.

02 / 04

A live voice call, straight from the browser

Streamed full-duplex audio between Twilio, the browser and Gemini Live over WebSockets

03 / 04

A CSV of leads becoming a call queue

Built CSV lead ingestion that turns a list into an outbound call queue

04 / 04

Every call's outcome, written back to the pipeline

Wrote each call's business, need, interest and booking back into the pipeline

  • FastAPI
  • Python
  • Twilio
  • Pipecat
  • Gemini Live
  • WebSockets

03 / 04ReadoraMOBILE ARCHITECTURE

Engineered For Pure Reading

01 / 04

The reader running, whole

Built an offline-first mobile reading experience with SQLite local storage, fast EPUB/PDF document indexing with PyMuPDF, and seamless theme inversion.

02 / 04

A local library, parsed and indexed on device

Engineered offline document parsing pipeline with PyMuPDF & FastAPI

03 / 04

State held in SQLite, no network in the loop

Implemented local library state synchronization using Zustand & SQLite

04 / 04

Gestural page turns and theme inversion

Built smooth gestural reading interface in React Native & Expo

  • React Native
  • Expo
  • TypeScript
  • Zustand
  • SQLite
  • FastAPI
  • Python
  • MongoDB Atlas
  • PyMuPDF
TrueSample Player now-playing screen with the source, rate, DSP and DAC signal path

04 / 04TrueSample PlayerNATIVE AUDIO

Bit-Perfect Audio, No Root

01 / 04

The player, whole

Android resamples every app's audio to one fixed rate before a USB DAC ever sees it. TrueSample Player takes the DAC over USB itself and streams each file at its real sample rate and bit depth.

02 / 04

The DAC, claimed over USB

Wrote a USB audio driver in C++ on libusb that claims the DAC without root

03 / 04

A DAC mode for every song

Parsed UAC1 and UAC2 descriptors to pick the DAC's best mode for every song

04 / 04

An EQ that never clips

Built the signal path view, hardware volume and graphic and parametric EQ in Jetpack Compose

  • Kotlin
  • Jetpack Compose
  • C++
  • JNI
  • libusb
  • FFmpeg
  • USB Audio Class
MORE BUILDS

Experiments, prototypes and everything in between.

About — philosophy

Engineering systems that operate with autonomy, speed and craft.

I build mobile applications, real-time voice and telephony pipelines, coordinated multi-agent AI systems, and the native code underneath when the platform gets in the way.

Offline-first mobile databases, full-duplex conversational voice, a USB audio driver that bypasses Android's mixer — different problems, one habit: direct execution and clean interfaces.

Get in touch

Have something worth building? Let's talk.

Available now for full-time engineering roles. Based in Mumbai, India, open to remote or on-site. Email is the fastest way to reach me.

© 2026 Devang Gupta. All rights reserved.