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Mark K
@mark_a_kelf
Vibe coding expert, Lovable expert, Base44 expert
Nigeria
English, German, Spanish, Italian
About me
Need a Lovable Expert to turn your idea into a working web app or SaaS MVP? I’m Mark 👋, a Vibe Coding Expert specializing in Lovable development and AI app development. I build Lovable web apps, SaaS MVPs, dashboards, and custom applications for startups and businesses. My Vibe Coding workflow combines Lovable with Base44 and Replit, supported by Supabase, APIs, full-stack development, app deployment, and publishing to the Google Play Store and Apple App Store. From Lovable MVP development to fixing, improving, and launching existing apps, I turn ideas into polished, reliable products.
Skills
Mark K
Offline •
Average response time: 1 hour
See my services
Business
I will lovable ai website lovable dev lovable bug fixing lovable expert mvp
Troubleshooting & Improvements
I will base44 bug fixing base44 expert base44 app deployment base44 mvp website
Portfolio
Work experience
Full stack AI developer
Upwork • Freelance
Aug 2025 - Present • 1 yr 1 mo
I have help founders and startups develop a high converting apps/websites, streamline operations that have scale their business real high and yield result
Vibe Coding & Lovable Developer
Now Pools • Freelance
Jul 2026 - Aug 2026 • 1 mo
Developed and refined NowPools, a production-ready pool and spa subscription platform using Lovable and Supabase. Built responsive interfaces and improved the complete customer workflow from pool/spa selection, subscription length, and accessories through installation scheduling and checkout. Implemented and improved backend integrations, installation, maintenance, chemical service, and removal workflows while troubleshooting critical Lovable backend issues in the admin panel. Improved application reliability, functionality, and overall user experience while taking the product closer to production launch. Key expertise: Lovable, Vibe Coding, Supabase, AI App Development, responsive web development, backend integration, workflow automation, API integration, debugging, and deployment.
7 Reviews
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-5 out of 7 Reviews
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Most relevant
tobaa909
New Zealand
I hired Mark for a full UI polish on my Lovable app, and he delivered exactly what I needed. He improved the spacing, visual hierarchy, button consistency, and mobile experience without changing the app's identity or functionality. Communication was excellent, with regular updates, a preview before...
Seller's Response
Helpful?
darylliam01
United States
Ongoing collaboration
Mark built a secure, fully working sign-in system with unique user IDs and email verification that was flawless on the first test. Fast delivery, clear communication, and proof of work at every step. If you need reliable authentication or backend work done right, hire Mark. Will work with him again.
Helpful?
collinsctt
United States
Ongoing collaboration
Great experience working with Mark. He's really experienced with Lovable and was able to help me add a few fixes to my lovable website without breaking the existing code or design layout. I originally couldn't find the root of the bugs, but he was able to accurately detect the error, debug it, and made...
Helpful?
darylliam01
United States
Ongoing collaboration
Mark helped me to connect my lovable website domain to godaddy and he did it faster than I expected. I'm really glad to have worked with him. We still have more projects ongoing, and I'm super confident in his quality.
Helpful?
collinsctt
United States
Ongoing collaboration
Still impressed by the speed and quality of his work. He was able to transform my Lovable website into a fully functional site and added custom animation to keep the site interactive without any glitched or errors. Definitely worth it.
Helpful?
