Hi, I'm
Santiago Quintana
Fullstack developer.
I build web products that sell.
I turn ideas into fast, scalable, well-crafted applications. I work with startups and companies that want real results, not just pretty code.
Developer focused on results
I've spent 5+ years building digital products for startups and growing businesses. I specialize in the full stack: from high-performance APIs to interfaces that turn visitors into customers.
I don't just write code — I understand the business behind each project. My approach combines solid architecture, best practices and agile delivery with no excuses.
Tech stack
What I build
Tailored solutions for every stage of your digital business.
High-Conversion Landing Pages
Pages built to convert. Load time < 2s, technical SEO and copy that closes. Not just pretty landing pages — ones that actually sell.
Request serviceCustom Web Applications
From internal dashboards to full SaaS products. Clean, scalable architecture built to grow without rewriting everything from scratch.
Request serviceRobust APIs & Backends
REST APIs and microservices that handle peak traffic. Auth, caching, rate limiting and Swagger docs from day one.
Request serviceMaintenance & Optimization
Full audit, refactoring and performance improvements for legacy projects. Measurable results in Core Web Vitals and response time.
Request serviceSelected work
Real projects, real challenges, measurable results.
Dev mode activated
Explore my portfolio like a CLI. Type help to get started.
How I work
A clear process eliminates surprises and guarantees results.
Discovery
I understand your business, goals and technical context. We define scope, timeline and budget in a 45-min call.
Proposal
I deliver a detailed proposal with architecture, stack, milestones and fixed-price estimate. No surprises.
Development
1-2 week sprints with live demos. Clean code, tests and documentation from day one.
Delivery
Production deploy with CI/CD, monitoring configured and team training. Everything documented.
Support
30 days of post-launch support included. Quick fixes and continuous improvements always available.
Discovery
I understand your business, goals and technical context. We define scope, timeline and budget in a 45-min call.
Proposal
I deliver a detailed proposal with architecture, stack, milestones and fixed-price estimate. No surprises.
Development
1-2 week sprints with live demos. Clean code, tests and documentation from day one.
Delivery
Production deploy with CI/CD, monitoring configured and team training. Everything documented.
Support
30 days of post-launch support included. Quick fixes and continuous improvements always available.
What my clients say
"I hired Santiago to rescue a project another developer had abandoned halfway through. In two weeks he had it running, and within a month we were live with double the features. His communication and follow-through is exactly what you look for in a freelancer."
Mariana García
CEO · DentaFlow
"Our old store loaded in 7 seconds with 0.8% conversion. Santiago rebuilt everything in 6 weeks. Now it loads in 1 second and we convert at 4%. The ROI was visible from month one. I recommend him without hesitation."
Carlos Ruiz
Founder · Brûlé Coffee
"What I value most about working with Santiago is that he thinks like a product manager, not just a developer. He helped us simplify features we were going to build unnecessarily and focus on what actually moved the needle. We're now on our 3rd project together."
Laura Torres
CTO · LogixBoard
Got a project?
Tell me what you're building. I reply within 24 business hours.