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Gustavo D.
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Gustavo D.

Senior Full-Stack Engineer | SaaS | AI Platforms | +5 Years XP |

I’m a production-focused Full Stack Developer specialized in building end-to-end scalable applications Maybe this sounds familiar: • You have a clear product idea but no one to architect and build it properly. • You need a fullstack system, not just isolated frontend or backend tasks. • You want something scalable from day one, not a prototype that breaks later. • You need someone who can own the process from zero to deploy. That’s where I come in. I’m a Senior Full Stack Developer with 4+ years of production experience, and I specialize in building complete applications from scratch to deployment. I design, build, implement and ship scalable systems end to end. What I build: • Backend architecture – Node.js, TypeScript, Bun, REST APIs, microservices, clean and scalable structures. • Modern frontend applications – React, Next.js, SSR, performance-focused interfaces. • Database design – MongoDB, MySQL, DynamoDB with proper structure and long-term maintainability. • Cloud and deployment – Docker, Docker Compose, AWS, CI/CD pipelines. • AI integrations, automation and system-level features when needed. I’ve created and launched multiple production applications including SaaS platforms, APIs, automation systems and cloud-native solutions. My focus is simple: Build it right. Make it scalable. Ship it properly. What you can expect from me: • Ownership from architecture to deployment • Business-oriented technical decisions • Clean, maintainable code • Clear communication and realistic timelines • Senior-level execution If you need someone who can take your idea from zero to live production and build it the right way, send me a message. I’ll tell you exactly how I’d approach it and what we should prioritize first

🇧🇷Joao Pessoa, Brazil$27/hr100% JSS5.00 (2)Since Jun 2024
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Earnings and projects

MRR
$1.6k

Last 6 months ÷ 6

World#30,304 / 412k
🇧🇷Country#424 / 4,647
Revenue, last 30 days
$2.3k

Last 6 months: $9.5k

Total earnings
$10k

Billed in all: $11k

World#194,252 / 412k
🇧🇷Country#2,057 / 4,647
Per project
$2.6k

$2.4k in the last 6 months

World#63,338 / 412k
🇧🇷Country#758 / 4,647
Projects, last 6 months
4
0% fixed100% hourly
World#51,813 / 412k
🇧🇷Country#490 / 4,647
Projects in all
4
0% fixed100% hourly
World#283,741 / 412k
🇧🇷Country#2,759 / 4,647

Earnings, last 30 days

$11.2k+$2.3k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$8k$10k$12kNo dataOct 8Oct 23Nov 7

Read once a week before Oct 28, 2026, daily since. Dotted: longer than usual between two readings. Hatched: over two weeks without one.

Skill rankings: Top 7% in ExpressJS

Ranked by MRR among everyone on Upwork with the skill.

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  5. #753API Development6,848 freelancers · 🇧🇷 #9Top 11%
  6. #778SaaS Development5,201 freelancers · 🇧🇷 #6Top 15%
  7. #799AI Chatbot6,841 freelancers · 🇧🇷 #5Top 12%
  8. #855Claude5,112 freelancers · 🇧🇷 #13Top 17%