Independent developer Systems & AI engineer
I design and build websites, apps, automations and AI tools for businesses — priced plainly, delivered on time, and yours to keep.
I build local-first apps, offline mesh protocols, code-intelligence tooling for AI agents, and hardware-backed products — end to end, from protocol to Play Store.
Tell me what's slowing your business down. These are the things I build most often — in plain words, with starting prices.
The services I sell, with the stack I usually reach for. Every project is handed over in full — code, accounts and all.
Websites, stores & apps
A fast site people find on Google and contact you from — or a full online store, booking system or Android app you run yourself.
HTML/JS · Next.js · Node · PostgreSQL / Firebase · Razorpay · Capacitor / Flutter
From ₹5,000What's included
WhatsApp & automation
Every form, order and enquiry lands in one place, your team gets an instant WhatsApp alert, and customers get their confirmations — nobody copies data by hand.
n8n · WhatsApp Business (Cloud) API · Google Sheets API · Webhooks
From ₹4,000 per workflowWhat's included
AI assistants
Trained on your prices, services and FAQs, it replies on your website or WhatsApp in seconds — and passes the tricky questions to you.
OpenAI / Gemini / Claude APIs · Retrieval over your documents · Local models via Ollama
From ₹12,000What's included
Smart devices & prototypes
Sensors, automation hardware and working prototypes — from a single device to a small batch — connected to your phone or dashboard.
Raspberry Pi · ESP32 · Arduino · MQTT · BLE
Custom quoteWhat's included
My own products, designed and built end to end. The same skills go into client work — ask me about any of them.
Selected systems. Two are open source; the rest are private and I'm happy to walk through them on a call.
Fact-checks AI coding assistants, so they stop making things up about your code.
Deterministic AST + call-graph evidence for AI coding agents, served over MCP.
A study app that shows each flashcard just before you'd forget it. Works offline.
Local-first spaced repetition on SQLite with FSRS scheduling and a Shadow DOM card sandbox.
Messaging that works with no internet or mobile signal — phones pass messages along until they arrive.
Delay-tolerant encrypted mesh: Rust protocol core, BLE discovery, Wi-Fi Direct bulk transfer, Noise XX.
A focus and productivity system across phone, web and a dedicated desk device, with an AI assistant.
Multi-device focus sessions with a Firestore lease lock, Gemini assistant and a Raspberry Pi kiosk.
A PDF reader for phones with realistic page turns, speed reading and an offline dictionary.
Flutter reader with memory-bounded page-turn recycling and an RSVP engine with ORP alignment.
A personal AI assistant that runs entirely on your own computer — your files never leave it.
Local-first AI workspace: Ollama backend, inspectable markdown memory, multimodal ingestion.
A library of 90+ ready-made buttons, loaders and interface pieces for web projects.
Multi-framework component library — React, Vue, Svelte and vanilla — with a live explorer.
The browser experiment where Lumium's ideas were first tried out.
Offline PWA prototype that validated focus mechanics and audio synthesis before Lumium.
Things that broke, and what I changed. The first design is rarely the one that ships.
BLE ├── discovery (advertisement packets) ├── proximity presence └── Noise XX handshake Wi-Fi Direct ├── opportunistic group-owner negotiation └── bulk bundle transfer (12+ MB/s)
ActiveTimerLease ├── Firestore transaction acquires the lease ├── 15-second heartbeat renewal └── automatic reclaim when a client disappears
source → Tree-sitter → symbol table / call graph
→ MCP tool server → LLM → verification passcard HTML → DOMPurify (strict) → Shadow DOM root
Read from the browser's own Performance APIs — nothing here is estimated or hard-coded. Vanilla HTML, CSS and JavaScript; no framework, no build step, no analytics.
Fixed prices are marked as such; everything else is a starting price, confirmed in writing after a short call about your project.
A short call to understand what you need and what it should do for your business.
A written quote with the scope, final price and timeline. Nothing starts until you agree.
Work begins on the advance. You see progress as it's built and give feedback along the way.
Final payment, go-live, and a full handover of code, files and accounts.
Two fixed-price landing pages for businesses that need to be found and contacted, full websites for businesses that run part of their work online, and Android apps your customers keep on their phones.
For being found and contacted.
For businesses that live on enquiries.
Everything in Starter, plus —
Up to 5 pages with an admin panel to manage one kind of content — products, menu, gallery or listings. Database and secure admin login included.
Product catalogue, cart and Razorpay checkout, with an order dashboard for you. Your first products loaded and ready to sell.
Up to 10 pages with customer accounts, bookings or orders, online payments through Razorpay, and automatic email notifications.
Portals, multi-role dashboards, integrations with your existing tools — anything beyond the above. Scoped together on a call, then quoted in writing.
A clean app for your catalogue, menu, services or content — or your existing website turned into a proper app. Published on the Play Store.
Customer logins, orders or bookings, push notifications, and an admin dashboard to run it all from.
The starting price covers what is described. Your final price depends on the pages and features you need, and is fixed in writing before any work begins.
Domain name, paid hosting if your site needs it, payment gateway fees and the Play Store developer account. You own every account, in your own name.
The repetitive parts of running a business, handled by software — so enquiries, orders and follow-ups never slip.
One trigger and the chain of steps it sets off, like the example above. Larger automation systems are quoted as a project.
Connects the tools you already use so routine work runs by itself — forms, Google Sheets, WhatsApp, email, invoices and reminders. Built on n8n.
The official WhatsApp Business API with auto-replies, order and booking confirmations, and instant alerts to your team.
WhatsApp message charges from Meta are billed to your own account, at actual cost.
Workflows run on accounts in your name, and are handed over in full.
An assistant trained on your prices, services and FAQs that answers customers on your website or WhatsApp, at any hour.
Answers customer questions from your own information — not the internet — and collects details for follow-up. Runs on your website, WhatsApp, or both.
I build the assistant so it answers from your documents rather than guessing — the same idea behind , where AI claims are checked against the source before they're shown. For sensitive data, it can run on a local model on your own machine, like .
AI usage fees (and WhatsApp message charges, if used) are billed to your own accounts, at actual cost.
A short call to list the questions it should handle; the price is fixed in writing before work begins.
Sensors, automation hardware and working prototypes — from a single device to a small batch. Components and hardware billed at actual cost.
A device that measures, controls or displays something — and talks to your phone, a dashboard or WhatsApp.
includes a Raspberry Pi desk device that syncs with the phone and web apps. includes a low-power ESP32 relay-node design.
Fixed prices, final files in your hands.
Each extra revision round beyond those included is ₹500.
Optional. Every project is handed over in full, whether or not you choose a care plan. Plans run month to month.
For Starter and Business landing pages.
For websites, stores and apps.
Everything in Landing page care, plus —
New pages, features or redesigns go beyond care and are quoted separately, at the same rates as the rate card.
Deterministic debugging infrastructure for AI coding agents
AI coding assistants are good at reasoning but often state things about a codebase that aren't true. Unravel reads the code's real structure first, gives the assistant hard evidence, and then checks every claim in its answer against the source.
Instead of asking an LLM to inspect raw files, Unravel builds structural evidence with Tree-sitter AST analysis before the model reasons, and independently verifies whether the model's final claims actually exist in the source.
Most AI coding tools run code → LLM → answer. Unravel runs code → AST/graph engine → verified evidence → LLM → verification engine → answer. The model stays free to reason while being prevented from inventing basic facts about the repository.
Local-first spaced repetition platform
A flashcard app for serious students. It works out when you're about to forget each card and shows it to you right then — so you study less and remember more. Everything stays on your device and works offline.
The power of Anki with a modern interface. Supports basic, reversed, cloze, image-occlusion and formula cards, plus custom HTML/CSS cards isolated inside Shadow DOM with multi-stage sanitisation.
Set how well-learned a card is, then grade your answer. Uses the published FSRS-4.5 default weights, assuming you review exactly on the due date (90% recall).
Offline, encrypted, delay-tolerant mesh communication
Messaging for when there's no internet and no mobile signal — floods, festivals, remote sites. Phones pass encrypted messages to each other over Bluetooth and Wi-Fi, carrying them along until they reach the person they're for. Nobody in between can read them.
No cell towers, internet or cloud servers. Bluetooth Low Energy handles nearby discovery, presence and lightweight handshakes; Wi-Fi Direct carries photos, voice notes and bulk media.
A browser visualisation of the protocol's custody states — it mirrors the architecture but does not run the Rust core.
A connected productivity system spanning software, AI and hardware
A deep-work system: focus timers, soundscapes, tasks and an AI assistant, kept in sync across your phone, the web and a small dedicated desk device — so you can put the phone away and still stay on track.
Phones, browsers and the kiosk all disagree about what time it is. A lease held in a database transaction — renewed every 15 seconds and reclaimed if a device disappears — guarantees exactly one device owns a focus session. Details in the technical view's engineering notes.
An experimental, modern PDF reading experience
What if a PDF reader treated reading itself as the product? Realistic page turns, a speed-reading mode that flashes one word at a time, an offline dictionary and read-aloud — in a Flutter app for phones.
Modular Flutter across application, reader, dictionary and platform modules. Page turning recycles a bounded pool of rendered pages so memory stays flat on long documents; RSVP uses Optimal Recognition Position alignment and punctuation-aware delays.
Local-first personal AI workspace & context engine
An AI assistant that runs entirely on your own computer. Your files, your notes and the model all stay on your machine — nothing is sent to a cloud service. Useful wherever data is too private to upload.
Your files + your memory + your model + your computer, instead of sending private data to cloud AI. Memory lives in plain markdown files you can read and edit, and documents, code and images are ingested locally.
Reusable multi-framework UI component library
A library of more than 90 ready-made buttons, loaders and interface pieces. Designed once, then translated so the same component works in whichever web framework a project uses.
Each component is authored once and translated across React, Vue, Svelte and plain HTML/CSS, with an interactive explorer to preview and copy them.
The experimental foundation that became Lumium
A quick, scrappy web app where I tried out ideas — focus timers, growing-plant visuals, ambient sound — before committing to building them properly in Lumium.
A browser-based lab that validated focus mechanics, plant-growth visualisation, ambient sound synthesis and offline-first storage before they were engineered into the full Lumium ecosystem.