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Martin C.
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Martin C.

Full Stack Developer | AI-Native Web, Mobile & Desktop Apps

I help founders, CTOs, and product owners turn roadmaps into fully delivered, scalable products. My team works as true partners, not order-takers — we obsess over the user, sweat the details, and make decisions through the lens of your business goals, not just the ticket in front of us. Here's what working with us looks like: thorough testing plans and clear documentation so quality holds as you grow, daily updates that report real progress instead of activity, and tight alignment to your priorities so every sprint moves the product forward. We build for scale from day one, so what we ship today doesn't become tomorrow's bottleneck. We've delivered across the full spectrum: consumer apps with 1M+ downloads like Christian Dating For Free, the marketing site for unicorns like Deepgram, and complex enterprise systems like Arriba Data Systems, a leading California platform for workers' compensation. That range means we're as comfortable with a focused 2–3 week build as we are with ongoing, flexible engagements that run for years. We're as comfortable with a focused 2–3 week build as we are with ongoing, flexible engagements that run for years. We're stack-agnostic across 100+ technologies — whether your product needs TypeScript, Dart, C#, or something else, we bring the right tools and senior engineers to the problem. The constant isn't the language; it's the ownership, accountability, and product thinking we bring to every engagement. You get the speed and flexibility of staff augmentation with the structure, visibility, and ownership of a real delivery partner. Can you share a bit about your product so we can schedule a quick 30-min call to confirm we're a great fit to work together?

🇵🇦Panama, Panama$34/hr100% JSS4.72 (26)Since Nov 2018
GlobeUpwork

Earnings and projects

MRR
$3.5k

Last 6 months ÷ 6

World#9,800 / 412k
🇵🇦Country#9 / 255
Revenue, last 30 days
$4.1k

Last 6 months: $21k

World#7,776 / 412k
🇵🇦Country#6 / 255
Total earnings
$377k

Billed in all: $395k

World#4,990 / 412k
🇵🇦Country#6 / 255
Per project
$7.4k

$5.3k in the last 6 months

World#22,841 / 412k
🇵🇦Country#32 / 255
Projects, last 6 months
4

Across 5 contracts

20% fixed80% hourly
World#51,813 / 412k
🇵🇦Country#22 / 255
Projects in all
51

Across 57 contracts

14% fixed86% hourly
World#59,936 / 412k
🇵🇦Country#16 / 255

Earnings, last 30 days

$395k+$4.1k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$390.0k$392.5k$395.0kOct 8Oct 23Nov 7

Skill rankings: Top 3% in Search Engine Optimization

Ranked by MRR among everyone on Upwork with the skill.

  1. #21.NET Stack276 freelancers · 🇵🇦 #1Top 8%
  2. #29QA Engineering580 freelancers · 🇵🇦 #1Top 5%
  3. #35Technical Documentation1,077 freelancers · 🇵🇦 #1Top 3%
  4. #60Database Architecture864 freelancers · 🇵🇦 #1Top 7%
  5. #67Dart2,324 freelancers · 🇵🇦 #1Top 3%
  6. #68Cloud Architecture966 freelancers · 🇵🇦 #1Top 7%
  7. #100Web Application Development2,030 freelancers · 🇵🇦 #1Top 5%
  8. #166iOS3,908 freelancers · 🇵🇦 #1Top 4%