Jack UserJU
Open to opportunities

Jack User

@jackuser

Experienced Blockchain Developer with a focus on secure systems.

Vietnam

What I'm looking for

I am looking for a role that challenges my skills in blockchain technology and allows for professional growth within a collaborative team environment.

As an innovative Blockchain Engineer, I have a strong background in developing secure and efficient blockchain systems. My expertise lies in cryptography, smart contract development, and decentralized application (DApp) creation, ensuring seamless integration and functionality. I have demonstrated the ability to lead projects that enhance data integrity and security within blockchain networks, significantly improving system performance and user experience through strategic innovations and optimizations.

In my recent role as a Blockchain Developer at SkyMavis, I developed and optimized smart contracts for Axie Infinity, focusing on gas-efficient interactions on the Ronin sidechain. I contributed to the scalability and security of the Ronin blockchain, implementing faster transaction finality and supporting cross-chain interoperability between Ethereum and Ronin. My proactive approach in enhancing platform security post-Ronin Bridge hack involved conducting security audits and implementing incident response protocols.

Previously, at Enjin, I integrated NFT solutions into the platform, enabling game developers to tokenize in-game assets. I provided technical guidance to the developer community and led workshops to facilitate the integration of blockchain functionality into decentralized games. My diverse experience across various blockchain ecosystems equips me with a unique perspective on the challenges and opportunities within the industry.

Experience

Work history, roles, and key accomplishments

SK

Blockchain Developer

SkyMavis

Jun 2023 - Jan 2025 (1 year 7 months)

Developed and optimized smart contracts for Axie Infinity’s breeding mechanics and marketplace transactions using Solidity. Contributed to the scalability and security of the Ronin blockchain, focusing on transaction finality and cross-chain interoperability. Played a critical role in improving platform security post-Ronin Bridge hack.

EN

Blockchain Developer

Enjin

Dec 2021 - Jun 2023 (1 year 6 months)

Developed and integrated NFT solutions into the Enjin Platform, enabling game developers to tokenize in-game assets. Wrote and audited smart contracts, ensuring secure minting and trading of digital assets. Led workshops to help developers integrate blockchain functionality.

TH

React Developer

Tech Horizons

Jun 2018 - Dec 2021 (3 years 6 months)

Designed and developed dynamic web applications using React.js and Redux, resulting in a 20% increase in user engagement. Collaborated with back-end teams to integrate RESTful and GraphQL APIs seamlessly.

Education

Degrees, certifications, and relevant coursework

Beloit College logoBC

Beloit College

Bachelor of Science, Information Technology

2018 - 2018

Bachelor's degree in Information Technology, focusing on the development of secure and efficient blockchain systems. Gained strong skills in programming languages and frameworks relevant to blockchain technology.

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Jack User - Blockchain Developer - SkyMavis | Himalayas