Languages and Environments
- TypeScript
- JavaScript
- Node.js
- Bun
- Python
- UV
- PHP
Portfolio / 2026
Byron
Serrano
Software Engineer
I design and build scalable systems with modern web technologies, from architecture to the user experience.
[01]
Professional profile
Software Engineer and Top Graduate. I combine full-stack development, software architecture, and collaborative work to turn real needs into maintainable products.
- 01Full-Stack Development
- 02Architecture & Data
- 03Technical Leadership
[02]
Areas of expertise
Backend
- Express
- NestJS
- Bun
- FastAPI
- Flask
Frontend
- Astro
- Next.js
- React
- Vite
- Svelte
- React Native
Artificial Intelligence
- FastMCP
- Harness Engineer
- Hugging Face
- LangChain
Databases
- PostgreSQL
- MySQL
- MongoDB
- ChromaDB
- Pinecone
- Redis
[03]
Selected work
Products and platforms where I have applied technology with intent.
Work↗ Visit project
El Sitio
A PropTech platform that centralizes the publishing and management of properties and real estate projects, enabling their distribution across multiple channels, lead generation, and lead management from a single environment. It integrates automation and applied AI solutions to optimize commercial and operational workflows.
Technologies
- Next.js
- TypeScript
- Supabase
- PostGIS
- Inngest
- Google Services
- OpenAI Services
Work↗ Visit project
Billease
Billease is an electronic invoicing ecosystem designed to streamline business administration. It centralizes inventory and receivables management in a clear interface, with CI/CD pipelines for agile updates and continuous operation.
Technologies
- PHP
- Laravel
- JavaScript
- PostgreSQL
- AWS
- Docker
- CI/CD
WorkPrivate work
Planifia
Planifia automates reservation logistics and reduces no-shows through intelligent scheduling and multi-channel notifications. It integrates a lightweight CRM to centralize client histories and key metrics, improving business operations.
Technologies
- Next.js
- NestJS
- TypeScript
- PostgreSQL
- AWS
- Docker
- Redis
- i18n
Personal↗ Visit project
Merki
Merki is a centralized analytics manager for YouTube and TikTok. It turns data into decisions through trend monitoring, KPI analysis by format, and predictive simulations in a fast, distraction-free dashboard.
Technologies
- Next.js
- Express
- TypeScript
- Neon
- AWS
- Clerk
- CI/CD
[04]
Professional Experience
A progression built across product, engineering, and the technology community.
El Sitio Corp
Software Engineer
May 2026 - Current
As a Software Engineer, I develop full-stack and artificial intelligence solutions for a technology platform in the real estate industry. I work directly with stakeholders to translate business requirements into maintainable features, contributing to their design, planning, implementation, and evolution. I build applied AI services with careful consideration of context management, edge cases, security, observability, and cost control on an architecture based on Next.js, Supabase, PostGIS, Inngest, and Google services.
Kriuu
Co-founder
Dec 2024 - Current
I co-founded Kriuu and design and drive STEAM technology convergence spaces in Manabí for software development and interdisciplinary solutions. I promote a practical technical-learning ecosystem built on a maker mindset and active collaboration.
AfifSystem S.A.
Technical Lead and Semi-Senior Full-Stack Developer
Feb 2025 - Oct 2025
As a Technical Lead, I coordinated development teams using agile methodologies to ensure efficient, high-quality deliveries. I defined software architecture and optimized databases for ERP systems, applying full-stack best practices with NestJS, Next.js, and PHP.
AfifSystem S.A.
Junior Full Stack Developer
Oct 2024 - January 2025
I designed, optimized, and maintained databases for distributed systems while overseeing quality assurance (QA) throughout the development cycle. I built backend and frontend solutions with Laravel, JavaScript, and NestJS, applying clean architecture principles.
Cooperativa Comercio
Intern — Mobile Full-Stack Development
May 2024 - July 2024
I gathered requirements with real clients and developed a mobile application with Flutter. The project focused on data visualization through a secure backend, prioritizing stability and low data usage.