Senior Web3 & AI backend engineer.
Smart contracts, Telegram bots, on-chain analytics and AI platforms, from one engineer who works across crypto and AI.
10+ years as a senior full-stack / backend engineer. I build smart contracts, DeFi systems, Telegram crypto bots, on-chain analytics and enterprise AI platforms that hold up in production.
What I build
Six services, one engineer. Crypto and AI, from the contract to the backend that runs it.
All services & what's includedSmart contracts & DeFi
ERC20/BEP20 tokens, launchpads, swap routers and upgradeable proxies.
Telegram crypto bots
Trading and utility bots, verification, alerts and on-chain payments.
On-chain analytics & data tools
Holder analytics, scrapers, airdrop scanners and dashboards.
Web3 backends & integrations
Node.js and Python services with ethers.js, web3.py, wallets and payments.
AI platform backends
FastAPI microservices, event pipelines, LLM integration, secure deployment.
Smart contract review / security check
A focused review of your contracts before launch or before an audit.
Selected work
Problem, what I built, stack, result. Each one has its own case study.
CNX Network DeFi ecosystem
As CTO, I grew a DeFi ecosystem from 10k to 40k+ users and $400k+ revenue: token contracts, a multi-chain wallet, a token swap service, a launchpad, an authenticator and a chat app, across web and mobile.
- $400k+ in revenue
Alara — enterprise AI platform
Backend architecture for Alara, an enterprise AI platform used by major banks: FastAPI microservices, Kafka/Redis event pipelines and GCP deployments, plus product ownership. Client details are confidential.
- In use by major banks
Multi-DEX Swap Router
Solidity contracts that route token swaps through Uniswap V3/V2 and PancakeSwap, built on a diamond (EIP-2535) factory and a transparent-proxy router.
- Solidity
- Hardhat
- TypeScript
0xShield
A Telegram crypto bot to deploy and verify ERC20 tokens from chat, shield groups against spam and bots, and run alerts, lookups, broadcasts and paid packages.
- Python
- web3
- Etherscan API
WebsiteAI Telegram bot
A Telegram bot that builds websites for crypto projects: pick a template, generate copy and images with AI, edit, auto-host and pay in crypto.
- Python
- AI APIs
- web3 / Web3.py
ERC20 Token Holder Analytics Dashboard
A React / Node.js / web3.js dashboard for top holders, balance share, history and wallet behaviour, built to spot accumulation and distribution.
- React
- Node.js
- web3.js
Experience
Research lab to CTO to enterprise AI. Ten-plus years of backends that had to work.
Full story- 2026 – present
Senior Full-Stack Engineer · Meddela
Main developer on enterprise platforms for our biggest client, Messagepoint: a multi-tenant platform with SSO, client management and permissions, and a health-plan document QA automation platform.
- 2024 – present
Senior Backend Lead & Product Owner · WAI Industries (ISSM.ai)
Led backend architecture for Alara, an enterprise AI platform used by major banks. Python (FastAPI) microservices for regulated environments, Kafka/Redis event pipelines, GCP deployments, API design and data models, product ownership.
Case study - 2023 – 2024
Blockchain Application Developer · WebsiteAI.io
AI automation triggered by blockchain transactions, Web3.py, wallet flows and crypto payment gateways. Remote.
Case study - 2021 – 2023
CTO / Lead Blockchain Developer · CNX Network
Grew a DeFi ecosystem from 10k to 40k+ users and $400k+ revenue. ERC20/BEP20 contracts, a multi-chain wallet (WalletX), a token swap service, a launchpad, an authenticator app and a chat app, across web and mobile. Remote.
Case study - 2023 · part-time
Blockchain Developer · TechLogans
Blockchain solutions for supply-chain management, financial transactions and identity verification. Backend development with Node.js, Express, MongoDB, web3.js and ethers.js.
- 2016 – present
Freelance Developer · Fiverr / Upwork
Python, JavaScript and Solidity projects for clients: web scraping and data tools, backend systems, smart contracts, and research papers turned into working code.
- 2019 – 2021
Research Associate · COMSATS research lab
7 peer-reviewed papers (IEEE, Springer) on blockchain and VANET security.
Web3 Security & News
Incident breakdowns, DeFi and smart contract notes, and practical tutorials.
A pre-audit checklist for ERC20 and DeFi contracts
The checks I run before any token or DeFi contract goes to audit or mainnet: access control, reentrancy, token quirks, oracles, upgrades and launch operations.
- Smart Contracts
- Hacks & Exploits
- DeFi
Diamond (EIP-2535) vs transparent proxy: choosing an upgrade pattern
How transparent proxies, UUPS and EIP-2535 diamonds work, what each costs you, and when I use a diamond for a factory and a transparent proxy for a router.
- Smart Contracts
- DeFi
- Tutorials
How to cancel a stuck Ethereum or Polygon transaction (same-nonce replacement)
Why a low-fee transaction blocks every transaction after it, and how to cancel or speed it up by sending a replacement with the same nonce, with a web3.py example.
- Tutorials
- Smart Contracts
Questions clients ask
Short answers first. If yours isn't here, ask it on a call.
What kind of projects do you take on?
Smart contracts and DeFi systems, Telegram crypto bots, on-chain analytics tools, Web3 backends and AI platform backends, plus focused security reviews of Solidity code. If your project sits between crypto and AI, that is exactly where I work.
Which chains and stacks do you work with?
EVM chains (Ethereum, BNB Chain, Polygon) with Solidity, Hardhat, ethers.js, web3.js and web3.py, and the XRP Ledger in Python. On the backend: Node.js / Express, Python / FastAPI, PostgreSQL, MongoDB, Kafka, Redis and GCP.
Can you review my smart contracts before launch?
Yes. I review your contracts for common vulnerability classes, access-control and upgrade risks, and give you a ranked list of findings with suggested fixes, then re-check your fixes. For protocols holding significant value, treat it as preparation for a formal audit, not a replacement.
Do you also build AI systems, or only crypto?
Both. I led backend architecture for Alara, an enterprise AI platform used by major banks: Python (FastAPI) microservices, Kafka/Redis event pipelines and GCP deployments. I also build AI features triggered by on-chain events.
How do we get started?
Book a free 20-minute call or send the contact form with a short description and budget. We agree on scope and milestones before any work begins.
How much does a project cost?
It depends on scope. Each service on the Services page has a starting price, and you get a fixed quote or milestone plan after the first call.
Can I hire you through Upwork?
Yes. You can hire me through my Upwork profile, or get in touch here first and we choose the setup that fits.
Have a contract, bot or backend to build?
Tell me what you are building. A free 20-minute call is enough to tell whether I am the right engineer for it, and what it would take.