Helder Lopez
Fullstack Developer
Passionate about crafting elegant solutions with modern web technologies
About Me
I am a Full-Stack Software Engineer passionate about building scalable web applications, optimizing system performance, and delivering high-quality, reliable code. Strong expertise in end-to-end development, and architecting robust backend systems. Focused on efficient problem-solving, clean architecture, and seamless user experiences—whether working with blockchain integrations, or high-traffic APIs.
Skills & Technologies
Experience
Mid Fullstack Developer
Catalyst Mexico
Lead development of web and web3 applications using React, Node.js, and AWS. Implemented CI/CD pipelines and mentored junior developers.
Web App Developer
Spyral Systems
Developed web applications using JavaScript, jQuery, HTML/CSS, and .NET Framework. Integrated with RESTful APIs and SQL Server databases.
Technical Support & Tester
Sys21 Software Agricola
Provided technical support to customers and performed testing for software products built with Visual Basic 8.
Featured Projects
Monstermy.city
Customizable NFT Collection built on Ethereum, with a focus on customization and rarity.
Socialbees.io
Ethereum-based NFT collection built around a social community, creating a decentralized autonomous organization. and NFT Auctions
Syklo.io
A non-custodial mobile wallet for stable coin transactions using secure peer-to-peer via smart contract-based escrow.
Swap Aggregator
A decentralized exchange aggregator for swapping tokens on Uniswap V2 and Balancer V2.
Backend Automation Service
Automation ETL Service for a client's E-commerce driven with Shopify, Amazon Seller, Chargebee, and Quickbooks, to create Redash dashboards.