Seicho Software Factory
Software Engineer
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Juan Antonio López Maragaño
Software Engineer · Full‑Stack · Applied AI
I build and evolve software products across frontend, backend and integrations. I have hands-on experience on AI-driven products and existing codebases.
Viña del Mar, Chile
Experience
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NotCo
Software Engineer — AI Team (Trainee)
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Final Degree Project
Full-Stack Developer
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Earlier experience
- Grupo Saesa — Innovation & Engineering Intern (2024)
- Sophia Technologies — Software Development Intern (2023)
Selected Work
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Full-Stack Raffle Platform
Private codebaseDeveloped a full-stack raffle platform almost end-to-end, from requirements and business logic to frontend/backend implementation and client demos. Gained hands-on exposure to deployment on Fly.io.
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High-Volume Document Processing
Private codebaseContributed to a proof of concept designed to process millions of professional fee receipt records within a few hours, tackling performance and large-scale processing challenges.
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AI-Driven Products — NotCo
Private codebaseContributed to full-stack development of AI-driven products within the food-tech industry.
Client Work
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Livello
IN DEVELOPMENTShopify e-commerce store for Livello, a Chilean sports-nutrition brand for endurance athletes (running, triathlon, Hyrox). Scope: catalog structure, shopping experience, and brand-aligned customization.
Personal Projects
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jlopezdigital
LIVECommercial landing for jlopezdigital.cl: static sites and web presence for local businesses (Astro). Private repo.
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CV Builder
LIVETool for creating and updating minimalist résumés in a few simple steps.
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Las Recetas de Juanín
LIVEA small personal recipe collection built to organize and share the recipes I actually cook.
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whetstone
IN DEVELOPMENTA personal deliberate-practice program in TypeScript. Spaced-repetition drills and a documented full-stack capstone, built without AI assistance by design.
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YoMeEncargo
ARCHIVEDProgressive Web App from my final degree project, for booking pre-purchase vehicle inspections with trusted mechanics.
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Books Register
IN DEVELOPMENTA small FastAPI + Nuxt tool to log the books I read and track how long each one takes.
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Money Manager
IN DEVELOPMENTAn early-stage personal finance tracker, still in early exploration.
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TuVigía
LIVEA Telegram bot that monitors public job and public-tender sources, notifying relevant opportunities based on personalized search profiles. Implemented and deployed for personal use.
- Working architecture and bot (TypeScript, Turso/libSQL, Cloudflare Workers, Telegram) Done
- Integration of public job and tender sources Done
- Matching and relevance-filtering engine Done
- Production automation (hourly cycle) Done
- Stable use and ongoing monitoring In progress
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High Energy
IN DEVELOPMENTWeb app for class management at a CrossFit gym in Osorno.
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This Portfolio
LIVEThe site you're looking at right now. Designed and built from scratch with Astro, including the EN/ES i18n routing and content architecture.
Tech Stack
Languages
- TypeScript
- JavaScript
- Python
- SQL
Frontend
- Next.js
- React
- Vue.js
- Nuxt
Backend
- NestJS
- Node.js
- FastAPI
Databases
- PostgreSQL
- MongoDB
DevOps
- Docker
- GitHub Actions
- Fly.io
Tools
- Git
- GitHub
- Claude
- Cursor
Languages
- Spanish (native)
- English (C1) Certificate ↗
About
Civil Engineer in Computer Science from Universidad Austral de Chile and Software Engineer with professional experience across frontend, backend, integrations and automation. I've worked both on existing production systems and on building new solutions end-to-end, including AI-driven products, tax and expense automation, and high-volume data processing. I'm particularly interested in software engineering, scalable systems, applied AI and digital transformation.