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Diego Aguirre

Fullstack Developer · Next.js & TypeScript

Diego Aguirre

I build complete digital products — from the interface to the database. WhatsApp catalogs, online stores, sales landing pages, and professional portfolios. Focused on performance, user experience, and scalability.

Technologies I work with

I use modern and reliable tools, choosing each technology based on the project's needs and always looking for simple and maintainable solutions.

Frontend

  • React
  • Next.js
  • TypeScript
  • TailwindCSS
  • next-intl

Backend & Data

  • Node.js
  • PostgreSQL
  • Prisma ORM
  • API REST
  • Server Actions
  • JWT Auth

Infrastructure

  • Docker
  • Linux
  • VPS
  • Nginx
  • Git
  • CI/CD

AI Tools

  • OpenCode
  • Gentle-AI
  • SDD
  • Engram
  • OpenRouter
  • LLM APIs

From sales to technology

I worked 8 years in finance, commerce, and sales — before getting into development. I sold products, negotiated with clients, and understood how money flows in a business. That experience taught me something no programming course teaches: before building a solution, you need to understand the business problem you're solving.

Automation came as a real need. I watched hours being lost to manual tasks that an application could resolve in seconds. I started learning to automate processes, and discovered that what I enjoyed wasn't just technology — it was solving business problems.

Today I combine both: I understand how businesses work and I know how to build the tools that make them work better. WhatsApp catalogs, online stores, landing pages — every project starts with the same question: how do I help this business sell more and work less?

What I believe in

Every project starts in the same place: understanding the business. These are the ideas that guide my work, regardless of the technology.

Understand first, build second

I don't build until I know what problem is being solved and for whom. One hour of conversation upfront saves weeks of rework later.

Simple over elegant

I prefer a clear solution that works today over a perfect architecture that nobody understands. Simple stays, complex breaks.

Build to scale

A business grows and its tools should grow with it. I think about the next step before delivering the first one.

Launch, measure, improve

I'd rather ship something functional and improve with real data than plan for months without knowing if it works. User experience is the best spec.

Shall we work together?

I'm available for freelance development projects or contractor work. I work with startups, small and mid-size businesses, and development teams that need to strengthen their technical capacity.

Got an opportunity? Write to me directly by email or schedule a call. If I'm a good fit for what you're looking for, I'll respond within 24 hours.

Contact

Got a project in mind? Send me a message and I'll get back to you shortly.