“You hired a freelancer who disappeared mid-project”
Half-built features. No documentation. Now you're starting over and burning cash you don't have.
Senior Fullstack Developer · Your Timezone
Stop losing weeks to bad hires. Start shipping with a dev who gets it.
You need a senior developer who can own your project end-to-end — not another junior who needs hand-holding or an agency that bills you for meetings. I've spent 5+ years building production software for US startups with React, Next.js, TypeScript, and Python. Same timezone. Senior-level work. 40-60% less than US rates.
No commitment. No sales pitch. Just a real conversation about your project.
Sound Familiar?
Hiring developers is broken.
You already know this.
Every founder and CTO I talk to has the same stories. The wasted months. The burned budget. The product that still isn't live.
“The agency is billing $200/hr and moving at a snail's pace”
Layers of project managers, status calls, and overhead — but your product still isn't shipping.
“Your offshore dev can't join a standup without a 12-hour delay”
Timezone gaps turn 1-day fixes into week-long threads. Your momentum dies waiting for replies.
What if you could skip the hiring lottery and work with someone who actually ships — on time, on budget, in your timezone?
How I Help
Your problem. My solution.
I don't sell hours — I sell outcomes. Every engagement starts with understanding what's blocking your business, then building the fastest path to unblock it.
Your idea is stuck in a spreadsheet
Custom Web Applications
You have a product vision but no technical co-founder. I take your idea from wireframe to production — fast, scalable web apps with React/Next.js and Python backends. Clean architecture that your next hire can actually maintain.
→ Go from concept to live product in weeks, not months
Discuss this with me →Your competitors are shipping AI features. You're not.
AI-Powered Features & Tools
Everyone talks about AI, but few know how to build it into a real product. I integrate LLMs, RAG pipelines, and intelligent automation into your existing app — or build AI-first products from scratch. No proof-of-concept graveyard. Production-ready.
→ Turn AI from a buzzword into a competitive advantage
Discuss this with me →You need a whole team but can only hire one person
Full-Stack Product Development
Database design, API architecture, frontend, CI/CD, deployment on AWS or Vercel — I handle the entire stack. You get the output of a small team from a single senior dev who owns the outcome end-to-end.
→ Ship faster without managing multiple contractors
Discuss this with me →Your website isn't converting visitors into customers
Landing Pages & Marketing Sites
A slow, ugly website is costing you money every day. I build blazing-fast, SEO-optimized sites with Next.js and Tailwind that are designed to convert. Mobile-first, performance-obsessed, built to rank.
→ More traffic, faster loads, higher conversion rates
Discuss this with me →5+
Years of experience
20+
Projects delivered
100%
On-time delivery rate
0
Timezone headaches
What Clients Say
Don't take my word for it.
“Simón didn't just build what we asked for — he challenged our assumptions and built something better. Our MVP launched 3 weeks ahead of schedule.”
“We needed someone who could own the full stack without hand-holding. Simón delivered a production-ready AI feature that our enterprise clients now pay extra for.”
“Working with Simón felt like having a senior engineer on the team — not a contractor. Clear communication, fast execution, zero drama.”
The Person Behind the Code
I'm Simón. I build things that make businesses money.
Five years ago, I wrote my first line of production code for a US startup. The founder needed an MVP in six weeks. We shipped in four. That product went on to raise a seed round — and I learned something important: great software isn't about clean code. It's about solving the right problem at the right time.
Since then, I've built AI-powered SaaS platforms, e-commerce systems processing thousands of orders, and internal tools that replaced entire manual workflows. My core stack — React, Next.js, TypeScript, Python/FastAPI, AWS, Docker — is chosen because it ships fast and scales when it matters.
I work exclusively with US-based clients and teams. Same timezone, async-friendly, native-level English. No 12-hour reply gaps. No lost-in-translation moments. When you Slack me at 2pm, I'm already working on it.
My edge? I think like a product builder, not a ticket-closer. I'll push back on a feature that won't move your metrics and suggest the one that will. Your success is my portfolio.
When I'm not shipping code, I'm deep into entrepreneurship — currently reading The Infinite Game by Simon Sinek. I believe the best software is built by people who understand the business problem before they open their editor.
Tech Stack
Production-proven tools. No experiments on your dime.
I use technologies I've shipped with dozens of times — so your project benefits from hard-won expertise, not a learning curve.
- React / Next.js
- TypeScript
- Python / FastAPI
- AWS
- Docker
- OpenAI / LangChain
- PostgreSQL
- Tailwind CSS
- Vercel
- GitHub Actions
How It Works
Three steps. Zero surprises.
I've stripped out everything that makes working with developers painful. No scope creep. No vanishing acts. No invoices for “discovery.”
- 01
Book a Free Call
30 minutes. No pitch, no pressure. We talk about your project, your goals, and your timeline. I'll tell you honestly if I'm the right fit — and if I'm not, I'll point you to someone who is.
You'll know exactly where you stand before you hang up.
- 02
Get a Clear Plan & Quote
Within 48 hours, you get a detailed scope, realistic timeline, and a fixed-price quote. No hourly billing surprises. No scope creep. You know what you're paying before a single line of code is written.
No risk. If the quote doesn't work, we shake hands and part ways.
- 03
Watch It Ship
I build, you review. Weekly demos so you see real progress — not just status updates. Direct access to me on Slack. When we're done, you own everything: code, docs, deployment. No lock-in.
Transparent from day one to launch day.