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Mark K
@mark_a_kelf
Full stack App developer, Lovable expert, Base44 expert
Nigeria
English, German, Spanish, Italian
About me
Hey, I’m Mark 👋, An Experienced Full Stack Developer, Lovable Expert, and Automation Specialist offering custom web app development, SaaS solutions, API integrations, Shopify integration, QA testing, bug fixing, dashboard development, browser automation, Selenium bots, social media automation, and scalable business systems. I help startups and businesses build high-converting platforms, streamline operations, and launch powerful digital products with clean UX, reliable performance, and professional results.
Skills
Mark K
Offline •
Average response time: 1 hour
See my services
Business
I will lovable ai lovable dev website lovable to shopify lovable expert fix lovable app
Business
I will base44 bug fixing base44 migration base44 expert base44 deployment integration
Portfolio
Work experience
Full stack AI developer
Upwork • Freelance
Aug 2025 - Present • 11 mos
I have help founders and startups develop a high converting apps/websites, streamline operations that have scale their business real high and yield result
5 Reviews
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-5 out of 5 Reviews
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Most relevant
collinsctt
Repeat Client
United States
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
Repeat Client
United States
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?
darylliam01
Repeat Client
United States
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
Repeat Client
United States
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?
darylliam01
Repeat Client
United States
Mark did an excellent job on this project. He set up the email integration smoothly, everything is delivering correctly and reliably, and he's now working on phase of the project as well. Communication was clear throughout, and he kept me updated on progress at every step. Highly recommend him for backend/integration...
Helpful?
