Solidity Developer

Senior Web3 Engineer | Blockchain Engineer

My Web3 journey began five years ago when I started developing smart contracts. Around three years ago, I joined the Human Protocol team, where I contributed to the protocol architecture, developed Solidity smart contracts from scratch, and built SDKs in TypeScript, Python, and Rust. I also designed and implemented the protocol's oracle infrastructure, enabling the processing of user-provided data and the delivery of verified results to the blockchain.

In early 2024, I had the privilege of attending the Polkadot Blockchain Academy in Hong Kong, where I deepened my expertise in Substrate, Rust, and FRAME development, while experimenting with Ink! smart contracts and diving into cryptography and blockchain technology. This experience not only broadened my technical knowledge but also connected me with a vibrant community of passionate Web3 developers.

Beyond protocol-level development, I have actively contributed to several open-source projects. One of these is the Equito Protocol, an advanced cross-chain messaging protocol designed to facilitate secure and efficient asset and message transfer between different blockchain networks. I implemented routing smart contracts and a validation node with signature verification mechanisms and data encryption for end-to-end message routing.

Most recently, I led a team at the Starknet Winter Hackathon, where we won a category with ThePass — an open-source project leveraging Zero-Knowledge Proofs (ZKPs) for secure data verification. In ThePass, I implemented the verifier in Cairo and utilized Stone Prover and Integrity tools for proof generation and on-chain verification.

I am passionate about creating secure and scalable smart contracts, contributing to open-source libraries, and ensuring that blockchain applications are built on strong cryptographic principles. I am excited about the opportunity to bring my expertise in Solidity, Rust, Cairo, and SDK development to a forward-thinking team and collaborate on cutting-edge blockchain solutions.


Experience: 3 years

Yearly salary: $120,000

Hourly rate: $70

Nationality: 🌏 Remote

Residency: 🌏 Remote


Experience

Lead Web3 Engineer
ThePass
2024 - 2025
- Implemented a Verifier on Cairo for zero-knowledge proof validation. - Integrated prover server on Rust. - Used Zero-Knowledge tools: Garaga, STWO, Integrity tool.
Senior Web3 Engineer
Equito Network
2024 - 2024
- Built the Equito Network Node using Rust and the Substrate, enabling the decentralized transfer of messages between chains. - Implemented custom cross-chain messaging protocols, leveraging the Equito Protocol for secure, reliable message transfers. - Utilized Substrate’s libp2p networking stack to establish peer-to-peer communication between nodes, ensuring message routing. - Integrated the node with Polkadot-JS, allowing for real-time interaction and blockchain management through a UI. - Worked with signature verification mechanisms, Encryption, Key derivation, and Diffie-Hellman key exchange for secure communication. - Designed and implemented Substrate pallets in Rust to extend blockchain functionality within the Equito Network. - Developed smart contracts for cross-chain messaging in institutional Web3 environments.
Lead Web3 Engineer
bB
2024 - 2025
- Developed smart contracts on Cairo for StarkNet. - Developed smart contracts on Solidity for Ethereum. - Built backend for the mobile app using Node.js and TypeScript. - Developed embedded wallet solution for the Starknet ecosystem and Web3 user onboarding. - Integrated Starknet.js for blockchain communication.
Dev Track | Polkadot Blockchain Academy
Polkadot Blockchain Academy
2024 - 2024
- Developed a DEX pallet for Substrate, implementing on-chain exchange logic, liquidity management, and trade execution for DeFi applications. - Gained hands-on experience in Substrate-based blockchain development. - Learned FRAME module development and Rust-based smart contract engineering using Ink!. - Completed coursework on cryptography and blockchain fundamentals, covering consensus mechanisms, encryption techniques, and zero-knowledge proofs.
Senior Web3 Engineer
Human Protocol
2022 - 2025
- Protocol architecture & smart contracts: Designed and implemented protocol architecture, including the development and optimization of Solidity smart contracts for secure and scalable decentralized systems. - AI integrations: - Developed off-chain services interacting with AI annotation tools (CVAT, LabelStudio), automating task creation, result validation, and reward distribution via smart contracts. - Integrated AI-powered off-chain automatic moderation and annotation tools for datasets, enabling seamless interaction with blockchain smart contracts to automate task management, data validation, and reward allocation efficiently. - Oracle infrastructure: Developed on-chain oracle infrastructure for secure data feeds and automation, enhancing protocol decision-making processes. - SDK development: Developed the Human Protocol SDK in Rust, TypeScript, and Python, providing streamlined blockchain interaction and smart contract communication. - Decentralized data indexing: Built subgraph indexing with The Graph to enable efficient, decentralized data querying for on-chain events. Staking & slashing systems: Developed a staking system with abuse detection and slashing mechanisms in Solidity, allowing protocol participants to be incentivized or penalized based on their behavior, particularly for abusive content detection in data annotation tasks. - DeFi market-making protocols: Contributed to HuFi, a decentralized market- making protocol, by improving liquidity mechanisms and on-chain trade execution across DeFi ecosystems.
Lead Back-End Developer
AlphaSwap Ltd
2021 - 2022
- Designed and developed the project architecture. - Optimized database queries for performance. - Improved API efficiency and scalability.
Back-End Developer
Codemotion
2019 - 2021
- Architected and developed backend services. - Led DevOps responsibilities for cloud infrastructure.
Blockchain Developer
Open Finance Group LLC
2018 - 2019
- Developed a secure service for anonymous transactions and storage. - Implemented a cryptocurrency mixer for enhanced privacy. - Designed a microservice architecture for scalable blockchain services.
Back-End Developer
Dimovo
2017 - 2018
- Integrated the Edson service with SAP HANA. - Developed modules for data import/export.
Full-Stack Developer, Team Lead
Bouchal s.r.o.
2015 - 2017
- Managed a team of 18 developers across multiple platforms. - Led development for 8 parallel projects. - Oversaw architecture, planning, and execution of software solutions.

Skills

blockchain
node
rust
solidity
typescript
english