CASE.01
web_v4_backend
- Problem
- Backend for this portfolio: an MVC API between the client and the database, with well-defined CRUD endpoints.
- Stack
- Role
- pending: your role in the project
- Result
- pending: measurable result
~/alexi $ whoami: alexi-duran-gomez · full stack developer
I build products that hold up.
End-to-end full stack development: React and TypeScript interfaces, APIs in Node.js, FastAPI and Laravel, and the architecture that keeps them running in production.
- Status
- Available for new projects
- Stack
- React · Node.js · FastAPI
- Zone
- Colombia · UTC−5 ·
- Languages
- ES / EN
- first professional role
- 2023
- companies
- 2
- technologies in the stack
- 24
- case studies
- 4
A portfolio does more than show what I do. It also reveals how I think.
I am Alexi Durán Gómez, a full stack developer focused on building web solutions on top of solid technical foundations and careful presentation.
I work across frontend and backend to deliver complete products: clear interfaces, well-structured APIs and technical decisions that do not become debt a month later.
Outside of code, music, painting and science fiction also inspire me. That mix helps me think with technical judgment without losing sensitivity for the final experience.
~/alexi $ neofetch
- user
- alexi@dg
- OS
- pending: operating system
- Shell
- pending: shell
- Editor
- pending: editor / IDE
- Langs
- TypeScript, Python, Java, C#, Rust, Dart
- Stack
- React · Node.js · FastAPI · Laravel
- Locale
- es-CO / en-US
- Uptime
- 3 years, 3 months (since first role)
Below the abstraction
I care about what happens under the framework: from the runtime to the operating system, and from the operating system to the hardware. That curiosity is what pulls me toward languages like Rust and past the API docs.
- Setup
- pending: main machine (CPU, RAM, monitor)
- Keyboard
- pending: model / switches
- Homelab
- pending: home server or Raspberry Pi
- Electronics
- pending: Arduino, ESP32, soldering…
Principles
Architecture before speed
I prefer a clean and well-organized base over a fast solution that becomes hard to sustain.
Intentional frontend
I aim for responsive, understandable interfaces aligned with the real product goal.
Reliable backend
I design services and APIs with validation, clear contracts and system growth in mind.
A stack that solves.
Grouped by layer. Each row says where and what I use the technology for.
| Technology | Usage |
|---|---|
| HTML | Semantic, accessible markup |
| CSS | Responsive layout and animation |
| JavaScript | ES6+, async flows and the DOM |
| TypeScript | Typed interfaces and contracts (this site) |
| React | SPAs and component libraries |
| Tailwind CSS | Utility-first styling systems |
| Bootstrap | Responsive interfaces |
| Technology | Usage |
|---|---|
| PostgreSQL | Relational modeling with SQLAlchemy |
| MySQL | Relational persistence for Express APIs |
| MongoDB | Documents and flexible schemas |
| Technology | Usage |
|---|---|
| Rust | Systems programming |
| Dart | Cross-platform apps |
| Technology | Usage |
|---|---|
| Node.js | RESTful APIs |
| Express.js | REST APIs with MVC architecture |
| Python | Backend and console tools |
| FastAPI | RESTful APIs |
| Laravel | RESTful APIs and microservices |
| Java | RESTful APIs and microservices |
| Spring Boot | REST services on Java |
| ASP.NET | Web services on .NET |
| C# | Backend on .NET |
| Technology | Usage |
|---|---|
| Docker | Reproducible environments |
| Git | Version control and branching |
| Vercel | Deploying frontends and APIs |
Selected projects
Public repositories told as case studies: the problem, the stack, my role and the result.
CASE.02
UserManagerExpress
- Problem
- User management REST API with full CRUD and authentication, on MongoDB and MySQL.
- Stack
- Role
- pending: your role in the project
- Result
- pending: measurable result
CASE.03
Email_Python_FastAPI
- Problem
- REST API for sending email from customizable HTML templates, structured around SOLID principles.
- Stack
- Role
- pending: your role in the project
- Result
- pending: measurable result
CASE.04
vibra_cultural
- Problem
- Blog-style site documenting a hometown’s cultural identity: articles, stories, people, photos and video.
- Stack
- Role
- pending: your role in the project
- Result
- pending: measurable result
Professional experience
I work across product, interface and architecture so every part has a reason.
~/alexi $ git log --career
Software Analyst and Developer @ Tensor S.A.S
- Built responsive interfaces for clients across different sectors and needs.
- Contributed to the evolution of an internal React component library.
- Supported migration efforts from a legacy base toward a more modern frontend architecture.
Full Stack Developer @ Palestina Digital
- Contributed to an e-learning platform designed for a high-volume user base.
- Worked within a microservices-based architecture to improve scalability and system organization.
- Optimized frontend performance to reduce load times and improve the user experience.
How I contribute to a digital product
Architecture, implementation and technical judgment to turn an idea into a maintainable web experience.
POST/frontend
Frontend development
Modern interfaces with React, TypeScript and Tailwind CSS, focused on performance, accessibility and visual clarity.
- Input
- Designs, requirements or an existing product
- Output
- Responsive, accessible React + TypeScript interface
- Deliverables
POST/backend
Backend development
APIs and business logic with Node.js, Python and Laravel, prioritizing scalability and maintainability.
- Input
- Business rules and data model
- Output
- API with clear contracts, validation and persistence
- Deliverables
POST/solution-design
Solution design
I support the technical definition of the product to turn ideas into implementable and sustainable flows.
- Input
- An idea or a business problem
- Output
- A technical plan that can be built in phases
- Deliverables
Ready to build your next project?
I am open to collaborations, contract development and technical conversations around web products.