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Mario  .

Mario .

Full Stack AI Developer | Lovable | Cursor | Supabase | SaaS & MVP

Most founders waste months and burn budget on the wrong decisions before they write a single line of code. I help you skip that part. I work with solo founders and startups who need to go from idea to a real, scalable product, without wasting time on the wrong stack or the wrong developer. 100% Job Success Score Top Rated on Upwork 50+ completed client projects Tech Lead at Softify Mentor at Softify Camp, the largest no-code/low-code education program in the Balkans Built LaneRunner, a SaaS platform with an estimated €1.5M valuation Tim Freyer, founder of LaneRunner, said it best: "Mario was very easy to work with and understood what we were trying to build early on. He helped us clarify scope, pointed out things that didn't make sense, and delivered a solid, production-ready system. Communication was clear throughout the project and timelines were respected. I'd happily work with him again." That's what I'm here for. Not to execute tasks, but to own outcomes. What I build: SaaS platforms for B2B and B2C founders Mobile apps with a scalable backend Marketplaces with roles, payments, and messaging Internal tools and client portals that replace spreadsheet chaos AI-powered workflows and automations Landing pages tied to actual conversion Tools I use: Lovable, Cursor, Supabase Claude, Figma, Stripe You work with one person who owns the result. No handoffs. No miscommunication. I take full responsibility for product scoping, UI/UX design and user flows, frontend, backend, auth, payments, and AI integrations, all the way through testing, launch, and post-launch optimization. Send me a message and let's get on a free strategy call. Most founders leave it knowing exactly what to build, which stack to use, and what they were about to get wrong.

🇭🇷Zagreb, Croatia$35/hr100% JSS5.00 (5)Since Nov 2022

Earnings and projects

MRR
$386

Last 6 months ÷ 6

World#88,370 / 412k
🇭🇷Country#138 / 807
Revenue, last 30 days
$0

Last 6 months: $2.3k

Total earnings
$9.1k

Billed in all: $9.5k

World#203,898 / 412k
🇭🇷Country#450 / 807
Per project
$2.3k

$2.3k in the last 6 months

World#69,616 / 412k
🇭🇷Country#175 / 807
Projects, last 6 months
1
100% fixed0% hourly
World#128,096 / 412k
🇭🇷Country#205 / 807
Projects in all
4

Across 6 contracts

50% fixed50% hourly
World#283,744 / 412k
🇭🇷Country#609 / 807

Earnings, last 30 days

$9.5kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$9.4k$9.5k$9.6k$9.7kOct 9Oct 24Nov 8

Skill rankings: Top 20% in Database Design

Ranked by MRR among everyone on Upwork with the skill.

  1. #38App Marketplace156 freelancers · 🇭🇷 #1Top 24%
  2. #430Database Design2,161 freelancers · 🇭🇷 #3Top 20%
  3. #642App Development2,592 freelancers · 🇭🇷 #2Top 25%
  4. #773Mobile App3,535 freelancers · 🇭🇷 #3Top 22%
  5. #817CRM Development2,819 freelancers · 🇭🇷 #1Top 29%
  6. #989Stripe3,152 freelancers · 🇭🇷 #1Top 31%
  7. #1,119UX & UI Design4,497 freelancers · 🇭🇷 #3Top 25%
  8. #1,530API Development6,848 freelancers · 🇭🇷 #2Top 22%