Web platforms, cloud infrastructure, AI features, and the blockchain layer when the project calls for one.
Six years building with React, Node, AWS, Terraform and Solidity — for a state government department, a US asset manager, and startups in Singapore and California.
Worked with
Work with me
Pick the one that matches where you are.
A codebase, cloud setup or contract suite reviewed line by line.
Best for
You inherited a codebase, or something is wrong and nobody can say what.
What you get
A working platform, front to back, deployed and handed over.
Best for
You have a product to build and no team to build it yet.
What you get
Senior engineering judgment on your team, without the headcount.
Best for
You have engineers but no one senior enough to call the hard shots.
What you get
Custom
Plenty of good work does not fit a package. If yours is one of those, tell me what you are trying to do and what constraints you are under, and we shape the engagement — and the price — around it on a call.
Also available
Conference talks, guest lectures, and one-to-one mentoring for engineers moving into Web3. Multi-day workshops have their own section above.
Short-form video for YouTube Shorts and Instagram Reels, plus written technical content and developer education material.
Running tech events, fests, hackathons and meetups end to end. Previously PR Head of Advaita, IIIT Bhubaneswar’s college fest, and founder of its Metaverse Chapter.
Event, portrait and travel work.
Workshops
Hands-on sessions run on campus or in-house, built around a project rather than a lecture. Students leave with something they built and a certificate for it.
Full-stack from fundamentals to deployment — HTML, CSS and JavaScript through React, Node and REST APIs, with CI/CD at the end.
Blockchain fundamentals, Ethereum and Solidity, smart contract development and dApp architecture. Students ship a working dApp.
Python for AI/ML, supervised and unsupervised learning, neural networks and NLP basics, through to deploying a model.
Every workshop
1–3 days
Online courses
Selected work
Nine projects, each a full platform rather than a single layer — front end, API, infrastructure, and a chain component where the problem called for one.
Govt. of Odisha
A land ownership registry for a state government, where every transfer is traceable end to end.
Land ownership in India is recorded across registries that rarely agree with each other, and reconciling them is manual, slow and disputable. This system records ownership and transfer on an immutable ledger so the chain of title for a parcel can be traced rather than reconstructed. Delivered as a complete decentralized application: the interface officials use to register, search and verify parcels, the core algorithms the system runs on, and the Solidity contracts holding record state and enforcing the rules a transfer must satisfy — written, tested and deployed. The work was published as a peer-reviewed conference paper.
GetFi · 2025
A Telegram mini-app store with gamified rewards and a conversational AI product recommender.
A commerce product that lives entirely inside Telegram: users earn gamified rewards, browse and buy without leaving the chat. The part that made it work is an AI recommendation engine built as a “ChatGPT for shopping” — a conversational front end that reads intent from ordinary questions and surfaces matching products in real time against the Amazon catalogue API. I built the whole thing end to end: the mini-app front end, the backend services behind it, and the recommendation system itself.
SuperWorld · 2020–2025
A map-based marketplace where every plot of virtual land is an NFT traded on Polygon.
A virtual real estate platform covering the whole globe, where each plot is an NFT that can be bought, sold and traded. The front end renders a tiled world map with search, ownership overlays and a bidding flow; a Node and Express API over MongoDB handles listings, offers, accounts and notifications; and Web3.js binds the application to the marketplace contracts on Polygon. I also built the payment gateway and third-party integrations so buyers who had never held crypto could complete a purchase, and led the team of five engineers who built and maintained it.
Selected work · 2 of 3
Bridgetower Capital · 2025–present
A phygital NFT platform where investors buy asset-backed tokens with a card, not a wallet.
A platform for purchasing NFTs backed by real physical assets. The entire backend runs on AWS serverless, provisioned as code with Terraform so every environment is reproducible and nothing lives only in a console. The token layer is T-REX (ERC-3643), which enforces investor eligibility and transfer restrictions on-chain rather than in application code, shipped with deployment scripts and an automated test suite. I connected the React front end over GraphQL and designed the end-to-end system flows.
BlockX · 2024–2025
A staking dApp on the BlockX chain, with custom contracts and a React front end.
Staking infrastructure for the BlockX chain. I designed and wrote the staking contracts — deposit, lock, reward accrual and withdrawal — then tested and deployed them on-chain. On top of that sits a React application that reads live position state and lets holders stake and unstake without touching a block explorer.
SuperWorld · 2022–2025
A crypto and NFT marketplace where creators and collectors list, buy and sell work.
The marketplace side of SuperWorld, separate from the land map: creators mint and list work, collectors browse and buy. Built on the same MERN foundation, with Web3.js binding the listing and settlement flows to the marketplace contracts.
Selected work · 3 of 3
Independent · 2022
Certificate verification that makes a forged document detectable rather than plausible.
An anti-forgery system for certificates. The document itself is stored on IPFS and its hash is anchored on-chain, so anyone holding a certificate can verify it against the issuer's record instead of trusting the paper. Built as a decentralized database with the verification contracts and an issuer-facing front end.
B.Tech major project · 2022
Health records held by patients rather than hospitals, with time-bound access for clinicians.
Medical records normally sit in whichever hospital system created them, which makes them hard to move and easy to lose. This system distributes them across a permissioned blockchain and inverts custody: the patient holds the keys and grants clinicians time-bound access to specific records. Built as a complete application — a React front end for both patients and doctors, an API layer for record indexing and retrieval, and Solidity contracts governing the access grants and their expiry.
Dell Technologies · 2021
Supply chain traceability that records each manufacturing step as a verifiable on-chain event.
A process lineage and control tool for supply chains. Each step in a manufacturing process is recorded as an event anchored on-chain, so a finished unit can be traced back through every component, handoff and quality check rather than trusting a spreadsheet. Built as a web dashboard for querying lineage, an ingest service that accepts process events from the factory floor, and the contracts that anchor and verify them.
Experience
Two permanent roles, and contract work covering the same ground.
Oct 2025 – Present
Vistateq Virtuosity
May 2020 – Sep 2025
SuperWorld
Experience · 2 of 2
20 months
IIIT Bhubaneswar
5 months
GetFi
8 months
BlockX
3 months
Wirmon
Stack
Languages
JavaScript (ES6), TypeScript, Solidity, Python, PHP, Go, C++, C, SQL
Frontend
React, Next.js, HTML5, CSS3, SCSS, Bootstrap, Material UI, ReactStrap, jQuery
Backend
Node.js, Express.js, PHP, REST APIs, GraphQL, Axios
AI & integrations
AI/LLM integration, Recommendation systems, Amazon API, Telegram Mini Apps
Cloud
AWS, Microsoft Azure, Google Cloud Platform
DevOps & IaC
Terraform, AWS Serverless, AWS CDK, Infrastructure as Code, CI/CD
Databases
MongoDB, MySQL, SQL
Blockchain & Web3
Solidity, Hardhat, Truffle, Web3.js, IPFS, Hyperledger, T-REX (ERC-3643), Staking contracts, Polygon, Smart contract auditing, dApp development
Practices
GitHub, Code review, System design, Agile
Agentic AI tools
Claude Code, Codex, Cursor, ChatGPT, OpenClaw
How I work
No discovery phase that bills for a month before anything is built. Four stages, each with something you can hold at the end of it.
You tell me what you are building and what is in the way. I tell you whether I am the right person for it — including when the answer is no. No deck, no pitch.
You get a written scope: what gets built, what does not, the sequence, and a fixed price. Nothing starts until you have read it and agreed to it.
Working software every week, deployed where you can click it. You see progress as it happens rather than waiting for a reveal at the end.
Documentation, a walkthrough with your team, and every credential transferred to you. The infrastructure is code in your repository, so nothing depends on me afterwards.
In their words
“Swapnil built GetFi end to end — front end, back end, all of it. He took the project from nothing and shipped every feature we asked for inside the timeline he gave us. The ownership is what I would point to: I never had to chase him for a status update or tell him what came next.”
Selcuk Casur
“Swapnil owned everything we built around BlockX. He did not wait to be told what to improve — he would come back with a better approach than the one we had asked for, and explain it to stakeholders who were not engineers. He was there building the company from the ground up.”
Nick Majumdar
“The MVP Swapnil built is what turned my proposal into a published paper. He took an idea that existed only on paper and made it something I could stand in front of people and demo — which is the difference between describing research and showing it.”
Atiya Ahmed
“Five days, from the fundamentals through to the advanced material, and the students stayed with him the whole way. What told me most was that the faculty sat in and stayed too — several of us left understanding blockchain properly for the first time.”
Praveen Bhanodia
Contact
Direct contact details are not published on this version of the site. Message me wherever you found it and you will have a reply within 24 hours.
Hyderabad, India
I work with clients across time zones — my last role was a US company, fully remote.
Available from September 2026
Booking conversations now for work starting then.