I am a Blockchain Developer & Smart Contract Security Researcher with hands-on experience in designing, developing, and securing decentralized applications. I specialize in building production-grade Web3 systems, auditing smart contracts, and performing advanced testing like fuzzing, invariants, and mainnet forking.
I have identified 25+ vulnerabilities across private audits, public contests, and independent reviews.
My work blends deep EVM security expertise with practical on-chain development, enabling me to build secure, scalable, and gas-optimized DeFi systems.
23 December 2025 - Present -Took ownership of end-to-end smart contract development for WorkChain, from architecture design to testing and deployment on Solana. -Spent significant time learning Rust + Anchor, writing unit tests, debugging PDAs, and optimizing escrow logic. -Handled edge cases & security checks like double-claim prevention, authority validation, and safe fund transfers. -Collaborated with the team to translate business requirements into on-chain logic, ensuring real-world usability and scalability.
Sept 2025 – Oct 2025
- Secured smart contracts for ERC-20, vesting, presale, and wallet systems.
- Optimized contracts for 30%+ gas reduction.
- Performed deep protocol testing using fuzzing, invariants, and mainnet forking.
- Conducted manual audits using Slither, Echidna, and custom checklists.
- Total Vulnerability: 20
- Report:
- Total Vulnerability: 21
- Report:
B.Tech — Information Technology (2022–2026)
Galgotias College of Engineering & Technology
Strong foundation: DSA, OS, DBMS, CN, OOP, TOC.
- Cyfrin Updraft — Blockchain Basics
- Cyfrin Updraft — Chainlink Fundamentals
- 🌐 LinkedIn: https://www.linkedin.com/in/shivansh-nigam-0x258/
- 🐦 Twitter: https://x.com/shivanshnigam0
- 🧪 GitHub: https://github.com/shubu258
- 📧 Email: shivanshnigam2582@gmail.com
- 📞 Contact: +91 6388398076
Feel free to explore my repositories to see my work in DeFi, Security Research, and Protocol Development.
Let’s build the future of decentralized systems together! 🚀