Varun Veerbhadra

AI Recep — A voice AI that answers, books, and quotes pest control calls.

Voice AI Agent · Completed · LangGraph, FastAPI, ElevenLabs, Claude, React Flow, ServiceM8

When RF Pest Management’s phone rings, an AI agent picks up. It identifies the caller, books or reschedules a technician, quotes the job from the real price list, and texts a confirmation — while a live graph on screen shows exactly which agent is handling the call.

Under the hood

• Four LangGraph agents — triage/CRM, dispatch, quoting, post-call comms — hand off calls via schema-validated tool calls, not prose matching
• ElevenLabs Scribe v2 Realtime transcribes the caller and Flash v2.5 speaks back, both over one WebSocket carrying audio and telemetry
• Claude Sonnet 5 plans triage, dispatch and comms; Opus 5 handles quoting, grounded by a pgvector knowledge base of the real price list
• React Flow renders the live agent graph as the call runs — nodes and edges lit by the backend’s own event stream, not a mock
• Self-hosted in Docker behind a Cloudflare tunnel; a shared access code exchanges for a signed token before the socket ever opens

GitHub

SessionPilot — An AI scribe and check-in caller for therapy practices.

B2B SaaS · Completed · React, Firebase, LangGraph, Gemini, ElevenLabs, Twilio

Therapists lose their evenings to paperwork. SessionPilot listens to the session and drafts the clinical note, then phones clients between appointments to check in — holding a real conversation and flagging anything worrying back to the therapist.

Under the hood

• Two products on one data model — Scribe drafts the note, Calls runs the check-in phone calls
• React 19 and Vite front end on Firebase — Firestore, Cloud Functions and Auth
• LangGraph agents (LangChain + Gemini) plan each call and verify its outcome afterwards
• The ElevenLabs voice agent calls server-side tools mid-call to log findings and escalate risk
• Google Cloud Speech transcribes sessions; Twilio carrier status reconciles missing webhooks

sessionpilot.app

Accustom — Put money on the line to actually finish what you start.

Installable PWA · Building · React Native, Expo, Firebase, Solidity, Polygon, Privy

Habits stick when quitting costs money. You stake cash on a challenge, prove you showed up each day with a photo or a run, and finish to keep your stake — plus a share of what everyone who dropped out left behind.

Under the hood

• One React Native + Expo codebase ships as an installable PWA and a native Android build
• 30+ Firebase Cloud Functions run scheduling, moderation, settlement and payouts
• Stakes held in USDC by an escrow contract on Polygon — a pure vault, all timing in Cloud Scheduler
• Privy embedded wallets, so users never touch a seed phrase; Meld handles the card-to-USDC on-ramp
• Timezone-aware crons close each day from UTC−8 to UTC+14; the 12% fee split is computed server-side

accustom.app

CertiFie — Blockchain certificate issuance and verification.

Web3 / DApp · Completed · React, Solidity, Ethereum, IPFS, Web3.js, Tailwind CSS

A way to prove a certificate is real. An institution issues one, and anybody can check it is genuine by uploading the file or pasting its ID — no phoning the issuer, no waiting. Revoked ones show as revoked instantly.

Under the hood

• Solidity contracts on Ethereum Sepolia record hashes for issuance, verification and revocation
• Documents pinned to IPFS — only the hash ever touches the chain
• React and Web3.js front end verifies by hash, or by re-hashing an uploaded file
• Tailwind CSS interface for both the issuer and verifier flows

GitHub

10" Autonomous FPV Drone — Autonomy-capable airframe with a 2 kg payload.

Hardware · Building · iNav, Raspberry Pi, Autonomous Flight, 2 kg Payload

A drone that flies itself. You hand it a route and it flies the whole thing unattended, carrying up to 2 kg — built for jobs where sending a pilot makes no sense, like moving something across a site or inspecting infrastructure.

Under the hood

• 10-inch FPV airframe sized to carry a 2 kg payload
• iNav flight controller handling autonomous waypoint navigation
• Raspberry Pi companion computer for onboard compute

Airframe & Payload

• 10-inch prop, built for autonomous logistics and inspection use cases
• 2 kg max payload capacity

Autonomy Stack

• iNav flight controller for autonomous waypoint navigation
• Raspberry Pi onboard companion computer for compute

Software Engineer — Accustom

Sep 2025 — Aug 2026 · 1 yr · Self-employed · Melbourne, Australia

Commitment contract app: users stake money on habits and forfeit it on failure

Skills: TypeScript, React Native, Expo, React, Node.js, Solidity, Firebase, Google Cloud, Stripe, RevenueCat, PayPal, CI/CD

• Shipped three TypeScript frontends on one design system (Expo/React Native Web PWA, React/Vite admin, prerendered marketing site) against a Node/TypeScript backend of 68 serverless Cloud Functions and 28 service modules on Google Cloud with real-time Firestore listeners.
• Built the payments layer across Stripe, RevenueCat, and PayPal, reconciling three settlement windows into one idempotent payout ledger. After a processor froze funds mid-operation, wrote and deployed the reentrancy-guarded escrow contract that replaced it (Solidity, OpenZeppelin, Hardhat).
• Designed the stake settlement engine deciding refunds and forfeits across four commit frequencies and group challenge pools, with timezone-aware deadline sweeps on Cloud Scheduler and payout locks that hold when scheduler retries overlap.
• Unified identity providers (Privy, Firebase Auth) into one session model: OAuth bridged between them, sessions recovered mid-redirect, and every callable endpoint behind a shared authorization gate with an admin tier, backed by Firestore and Storage rules enforcing per-user isolation at the data layer.
• Gated every push behind a four-job CI/CD pipeline (GitHub Actions, Netlify): typecheck, lint, deadcode analysis, and 1,277 tests, integration tier running against a real Firestore emulator and local chain rather than mocks.

Contract AI Engineer — Renaissance Systems

Dec 2025 — Feb 2026 · 3 mos · Contract · Melbourne, Australia

Voice automation platform for RF Pest Management

Skills: LangGraph, FastAPI, Python, Docker, PostgreSQL, pgvector, React Flow, React Native, Stripe

• Delivered an autonomous voice receptionist running in production, handling 50–200 calls a month and cutting 4+ hrs/week of manual data entry. Collaborated with a business analyst and a second developer on a three-person team.
• Designed a four-agent LangGraph system (triage/CRM, dispatch, quoting, comms) handing off through schema-validated tool calls for deterministic routing across a live call.
• Built the realtime voice platform: audio and telemetry over a single WebSocket, on a self-hosted FastAPI service in Docker behind a Cloudflare tunnel, gated by a signed-token handshake before the socket opens.
• Backed the platform with PostgreSQL for call records, bookings and quote history, grounded quoting in a pgvector knowledge base built from the client’s real price list, and integrated with ServiceM8 via API, validating every booking and quote before a record was written.
• Built the operator-facing surfaces: a live agent graph in React Flow driven by the backend’s event stream, plus React Native/Expo field and admin apps on Firebase with call monitoring and Stripe recurring billing.

Full Stack Developer Intern — Anyo

Mar 2023 — Jun 2023 · 4 mos · Internship · Remote

Skills: React Native, RASA, Docker, Kubernetes, AWS EC2

• Engineered core features of a React Native application, driving it from concept to functional prototype.
• Containerised a RASA chatbot with Docker and deployed via Kubernetes on AWS EC2, scaling concurrent traffic capacity 50%.
• Paired with a fellow intern on test coverage and pre-release validation, catching integration failures before deployment.

Software Developer Intern — Airlift USA Inc.

Dec 2022 — Feb 2023 · 3 mos · Internship · Coimbatore, India

Skills: Go, OpenAI API, AngularJS, React.js, REST APIs

• Implemented AI-powered input predictions via the OpenAI API in Go, reducing manual data entry and error rates for the sales team.
• Optimised API endpoints and refactored legacy code under senior engineer review, reducing load times 21% while clearing technical debt.

Master of Information Technology — Monash University

Feb 2024 – Dec 2025 · Melbourne, Australia

Graduate studies in advanced computing, software architecture, and intelligent systems.

Ranked 31st — QS World Rankings 2027.

Bachelor of Technology, Computer Science — Vellore Institute of Technology

Jul 2019 – Apr 2023 · Vellore, India

Core curriculum in algorithms, data structures, operating systems, and software engineering.

Ranked 119th — QS by Subject 2026 · Engineering & Tech.