raigoza

Designed and deployed 6 smart contracts (Solidity 0.8.24, OpenZeppelin 5) to mainnet on QIE Blockchain, including an ERC-4626 yield vault, soulbound identity passport, and on-chain credit scoring engine.  Built a behavioral credit scoring system (300-850 score) derived from 5 on-chain components with 7- day aging logic to prevent score manipulation; implemented four loan tiers from Bronze to Platinum up to $50k at 8% APR

Chainlink Hackathon. Designed and built an Ethereum-based rainfall derivatives protocol enabling users to hedge and trade rainfall risk.  Integrated Chainlink oracles for automatic on-chain settlement based on real-world weather data.  Developed full-stack dApp interface, smart contract architecture, and tokenomics model.

 Conducted competitive research and built a full content and marketing strategy from scratch for a US- based executive coaching client, operating fully remotely in English.  Managed LinkedIn and Instagram channels, developed content calendars in Buffer, and produced editorial posts and video content aligned with the client’s personal brand.  Built and sent a weekly newsletter via Mailchimp; tracked KPIs including email open rates, engagement rate, reach, and follower growth, delivering monthly performance reports.

Designed jewelry collections for the company and international clients; gained deep hands-on expertise in metal casting, production processes, and quality finishing.

Founded an award-winning jewelry brand that received the Lápiz de Acero in 2013, Colombia’s most prestigious industrial design award, and seed capital from the Medellín city hall.  Led full product development: designed collections in Blender, built a proprietary microcasting system, and directed 3D printing production, training team members in modelling and fabrication.  Directed brand identity end to end: briefed and collaborated with a logo designer and communication specialist to define brand voice, art directed editorial and product photography with a professional photographer, and oversaw Instagram and website presence.  Managed commercial partnerships with Museo de Arte Moderno de Medellín (MAMM) and Museo de Antioquia; led business pivot from brass to silver and gold with revised quality control to minimize returns.