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Karoly N.
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Karoly N.

Full Stack Laravel SaaS Developer | VueJs, NuxtJs, APIs & MVPs

I 𝘁𝗮𝗸𝗲 𝗼𝘄𝗻𝗲𝗿𝘀𝗵𝗶𝗽 of existing systems and make them stable, maintainable, and ready for real users — 𝗻𝗼𝘁 𝗷𝘂𝘀𝘁 𝗮𝗱𝗱 𝗳𝗲𝗮𝘁𝘂𝗿𝗲𝘀 on top. If your application has grown messy, is breaking under real usage, or needs someone who can 𝘄𝗼𝗿𝗸 𝗶𝗻𝗱𝗲𝗽𝗲𝗻𝗱𝗲𝗻𝘁𝗹𝘆 inside code they didn't write, that's exactly where I fit. I'm comfortable at any stage — from an 𝗲𝗮𝗿𝗹𝘆 𝗠𝗩𝗣 that needs to be pushed toward something reliable, to a mature system that needs careful, low-risk changes. 𝗪𝗵𝗮𝘁 𝗜 𝗵𝗲𝗹𝗽 𝘄𝗶𝘁𝗵: • Legacy cleanup: technical debt, hidden bugs, codebases that got hard to maintain • MVP hardening: taking early-stage products and preparing them for real, paying users • Complex integrations: payment gateways, multi-tenant setups, high-concurrency data exports • Architecture: modular, domain-driven structure (bounded contexts) that keeps large codebases maintainable as they grow • Day-to-day development: new features, admin panels, auth/roles, and performance improvements on existing Laravel/Vue systems 𝗥𝗲𝗰𝗲𝗻𝘁 𝘄𝗼𝗿𝗸: • Payment platform: caught a concurrency bug in a compliance export before it caused any data loss, fixed at the root • Multi-store e-commerce: Magento platforms with 8 storefronts on one backend, handling live customer • data and payments • Own SaaS product: building end to end (Laravel + Nuxt 3), backend near MVP — modular architecture with clear domain boundaries (Account, Billing, Chat, and more, each with its own contracts, models, and services) 𝗔𝗜 & 𝗠𝗼𝗱𝗲𝗿𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: I work daily with AI coding tools — Claude Code, Antigravity — using skills, workflows, and MCP servers to move faster. What keeps the output production-ready, not just functional, is 15+ years of engineering judgment behind it — knowing why the code works, not just that it runs. 𝗔𝗯𝗼𝘂𝘁 𝗺𝘆 𝗦𝘁𝗮𝗰𝗸: Laravel · Vue/Nuxt · PostgreSQL/MySQL · REST APIs · CI/CD (GitHub Actions) · Python/FastAPI when the project calls for it. Always open to a quick chat if you want to walk me through what you're working with — happy to give you a straight read on where things stand.

🇭🇺Budapest XI. kerulet, Hungary$45/hr100% JSS4.94 (21)Since Jan 2016

Earnings and projects

MRR
$808

Last 6 months ÷ 6

World#57,579 / 412k
🇭🇺Country#96 / 713
Revenue, last 30 days
$3.3k

Last 6 months: $4.8k

World#10,919 / 412k
🇭🇺Country#24 / 713
Total earnings
$116k

Billed in all: $146k

World#32,948 / 412k
🇭🇺Country#63 / 713
Per project
$3.6k

$1.6k in the last 6 months

World#47,171 / 412k
🇭🇺Country#75 / 713
Projects, last 6 months
3
67% fixed33% hourly
World#66,479 / 412k
🇭🇺Country#116 / 713
Projects in all
32

Across 43 contracts

77% fixed23% hourly
World#92,223 / 412k
🇭🇺Country#161 / 713

Earnings, last 30 days

$146k+$3.3k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$142k$144k$146kOct 8Oct 23Nov 7

Dotted: longer than usual between two readings.

Skill rankings: Top 12% in MySQL

Ranked by MRR among everyone on Upwork with the skill.

  1. #16Domain-Driven Design105 freelancers · 🇭🇺 #1Top 15%
  2. #121Minimum Viable Product546 freelancers · 🇭🇺 #1Top 22%
  3. #174Nuxt.js1,349 freelancers · 🇭🇺 #2Top 13%
  4. #381Web Application Development2,030 freelancers · 🇭🇺 #1Top 19%
  5. #534CI/CD3,691 freelancers · 🇭🇺 #1Top 14%
  6. #779Django5,931 freelancers · 🇭🇺 #1Top 13%
  7. #824REST API5,062 freelancers · 🇭🇺 #1Top 16%
  8. #896FastAPI4,337 freelancers · 🇭🇺 #2Top 21%