Nelson Alexander Gamboa Castellanos
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Nelson Alexander Gamboa Castellanos

Nelson Alexander Gamboa Castellanos

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Desarrollador en Amazing Colors
Bogota D.C., Colombia

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Jobs verified_user 0% verified
  • Kraken
    Senior Blockchain Engineer & Security Researcher
    Kraken
    Oct 2022 - Jun 2025 (2 years 9 months)
    - Designed and implemented smart contracts for a regulated cryptocurrency investment platform, ensuring compliance with Colombia’s Financial Superintendency. This enabled the platform to operate legally and attract institutional investors, resulting in a 40% increase in assets under management within the first year. - Led the integration of ERC-20 token payments and MetaMask wallet support, streamlining user onboarding and transactions. This reduced onboarding time by 60% and increased platform adoption among retail users. - Developed advanced staking and DAO governance mechanisms for internal DeFi projects, fostering decentralized decision-making. Empowered users to stake over $5M+ in assets and participate in protocol governance, driving
  • Everledger
    Blockchain Software Developer - Interoperability & dApp
    Everledger
    Oct 2020 - May 2022 (1 year 8 months)
    - Developed Solidity smart contracts for blockchain-based logistics and traceability solutions, ensuring data integrity across supply chains. Enabled real-time tracking for 100+ clients, reducing fraud and improving supply chain efficiency by 30%. - Collaborated with frontend teams to build dApps using Web3.js and Ethers.js, integrating cross-chain wallet and token support. Increased user engagement and enabled seamless cross-chain transactions for clients. - Contributed to a food traceability platform** leveraging IPFS for decentralized storage and Hyperledger Fabric for private blockchain infrastructure. Provided transparency for 50+ food suppliers and enhanced consumer trust. - Participated in security audits and implemented improvements
  • Tayrona Capital Financial Group
    Full-stack Developer
    Tayrona Capital Financial Group
    Jul 2018 - Jun 2020 (2 years)
    -Implemented decentralized identity modules (DID) for a blockchain-powered educational app. -Built the platform's frontend and backend using React and Node.js. -Integrated digital signatures and decentralized storage technologies for enhanced security.
  • d
    Junior Web Developer
    dysruptiveHR
    Feb 2016 - Apr 2018 (2 years 3 months)
    - Formulated a CMS website using the MERN stack (MongoDB, Express.js, React.js, Node.js), increasing content management efficiency by 50% and supporting rapid deployment for new features. - Created the backend using Laravel/PHP framework, developing an automated microservices development framework that improved development speed by 35% and streamlined onboarding for new team members. - Involved in coding pages with best Search Engine Optimization (SEO) techniques, boosting organic traffic by 60% and improving search engine rankings for key business keywords.
Education verified_user 0% verified
  • UNIVERSIDAD DISTRITAL FRANCISCO JOSÉ DE CALDAS
    Bachelor of Engineering - BE, Computer Science
    UNIVERSIDAD DISTRITAL FRANCISCO JOSÉ DE CALDAS
    Jan 2010 - Dec 2015 (6 years)