Luka K.
Full-Stack Developer | AI Apps, SaaS, MVPs, Cursor, Supabase
Most SaaS MVPs don’t fail because of bad code. They fail because founders build the wrong scope, choose the wrong stack, or waste months on features nobody needs. I help founders turn rough SaaS, AI app, and internal tool ideas into clean, production-ready products without overbuilding, overpaying, or getting stuck with the wrong technical decisions. 100% Job Success Score Top Rated on Upwork 20+ completed client projects I don’t just build what you ask for blindly. I help you figure out what should actually be built, what should be simplified, what should be delayed, and what could become a problem later. A lot of founders come to me with an idea, a rough workflow, a few references, or a long list of features. My job is to turn that into a clear product plan and then build the first version properly. What I build • SaaS MVPs and subscription platforms • AI-powered tools, chatbots, copilots, and workflows • Internal tools, CRMs, and client portals • Booking platforms and marketplaces • Admin dashboards and analytics systems • API integrations, payment systems, and automated workflows If your idea is a product people log into to manage, create, book, track, automate, or analyze something — that’s exactly the type of product I build. How I help before development starts Before writing code, I help clarify: • What the real MVP should include • Which features are actually needed for launch • What should be removed or delayed • Which tech stack makes the most sense • Where the product could become expensive, slow, or hard to scale later This is where a lot of money gets saved. The wrong first version can cost months. A focused MVP can get you to launch, feedback, and real users much faster. Tools and stack Depending on the project, I usually work with: • Next.js / React / TypeScript • Supabase for auth, database, storage, and security • Stripe, PayPal, Mercado Pago, or other payment systems • OpenAI / Claude APIs for AI features • Cursor, Codex, Claude, and Lovable for faster development and iteration • Third-party APIs for automations, messaging, analytics, and integrations The goal is simple: move fast, but still build something clean, secure, scalable, and easy to maintain. Let’s talk Send me a message and let’s get on a free strategy call. Most founders leave it knowing exactly what to build first, which stack to use, what to avoid, and what they were about to get wrong before spending money on development.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $12k
Billed in all: $21,119$21k
$2.4k in the last 6 months
Across 11 contracts
Earnings, last 30 days
Skill rankings: Top 6% in Responsive Design
Ranked by MRR among everyone on Upwork with the skill.
- #34Low-Code Development312 freelancers · 🇷🇸 #2Top 11%🇷🇸#2 of 4
- #81No-Code Development1,096 freelancers · 🇷🇸 #2Top 7%🇷🇸#2 of 18
- #194Web Application Development2,030 freelancers · 🇷🇸 #3Top 10%🇷🇸#3 of 14
- #520Supabase4,116 freelancers · 🇷🇸 #9Top 13%🇷🇸#9 of 39
- #558Responsive Design9,915 freelancers · 🇷🇸 #11Top 6%🇷🇸#11 of 137
- #652SaaS Development5,201 freelancers · 🇷🇸 #9Top 13%🇷🇸#9 of 26
- #653AI App Development4,708 freelancers · 🇷🇸 #6Top 14%🇷🇸#6 of 27
- #692Claude5,113 freelancers · 🇷🇸 #4Top 14%🇷🇸#4 of 30