Open to opportunities

N User

@nuser9

Message

I build enterprise platforms and Web3 products that scale securely.

Spain

Message

What I'm looking for

I'm looking to build scalable enterprise or Web3 products where I can combine full-stack engineering, technical product leadership, and global customer support experience to deliver measurable outcomes.

I've delivered enterprise applications at ELCA IT that generated more than $100 million in annual revenue, while building and leading premium support teams across three continents.

As a freelance blockchain developer, I've deployed 10+ smart contracts across Ethereum, Solana, SUI, and TON, tokenized 100K+ digital assets, and shipped eight DApps and NFT-gated websites supporting 100K+ wallet connections. I also ranked third in Web3 Gaming at Colosseum's Breakout Solana Hackathon.

I combine full-stack engineering, technical product management, and customer-focused delivery across Azure, React, Java, SQL, Solidity, and RESTful APIs.

Experience

Work history, roles, and key accomplishments

Current

Blockchain Developer

Current

Freelance

Jan 2018 - Present (8 years 7 months)

Developed and deployed smart contracts across multiple blockchain networks, tokenizing over 100K digital assets. Designed and shipped DApps and NFT-gated websites, and conducted security audits.

Solidity Smart Contracts Web3 Blockchain Ethereum Solana Sui TON React ERC20 ERC 223 ERC721 Security Audits Tokenization dApps DeFi NFT

Technical Product Manager

ELCA IT

Sep 2019 - Dec 2023 (4 years 3 months)

Led design and development of enterprise applications driving $100M+ annual revenue. Managed global support team and implemented RESTful APIs processing 3M+ transactions monthly.

Azure React Java SQL REST APIs JSON JavaScript Product Management Team Leadership Incident Management Dashboarding

Customer Support Engineer L3

ELCA IT

Jan 2019 - Sep 2019 (8 months)

Provided 3rd-level support handling 50 monthly bugs. Designed and created the premium support team from scratch, shortening bug management lifecycle and saving costs.

PHP SQL Support Engineering Team Building Process Improvement Training Coaching

Customer Support Engineer L2

ELCA IT

Aug 2018 - Jan 2019 (5 months)

Provided 2nd-level support handling 75 incidents monthly with 98% resolution rate. Managed key customers and designed new procedures to improve bug resolution.

JavaScript SQL JSON Incident Management Customer Support QA Process Improvement