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Fiverr Pro
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$
USD
I will base44 bug fixing base44 deployment base44 migration base44 integration web app
Mark K
About this gig
I help founders and small businesses fix, finish, and scale Base44 apps turning half-working
prototypes into stable, launch-ready MVPs and SaaS products.
Most clients come to me after Base44's quick fixes run out broken auth, database errors, silent payment failures, or an app that works in the builder but breaks for real users. I find the root cause instead of patching around it.
I work across React, Node.js, Supabase, PostgreSQL, and Stripe so I'm not limited by what Base44's builder alone can do.
What I help with:
- Base44 app debugging auth, database, broken logic
- Base44 Stripe and payment integration
- Base44 database setup (Supabase/PostgreSQL)
- Base44 full MVP/SaaS builds from an existing project
- Base44 production deployment and go-live support
- Base44 API and AI integrations
- Base44 app audits a clear report on what's broken
If you want an high level expert in Base44 development with premium quality Send a message let's discuss your project.
Get to know Mark K
Mark K
Full stack App developer, Lovable expert, Base44 expert
- FromNigeria
- Member sinceMar 2026
- Avg. response time1 hour
- Last delivery2 weeks
Languages
English, German, Spanish, Italian
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.
My Portfolio
FAQ
My app was built by someone else, or by Base44's AI directly can you still fix it?
Yes. Most of my clients come to me with apps they didn't originally build with me. Send me the project link and a note on what's wrong, and I'll take it from there.
Do I need to give you full access to my Base44 project?
Yes I'll need edit/collaborator access to diagnose and fix issues properly. I only use it for the scope we agree on, and I can walk you through exactly what access to grant.
My app works in the builder but breaks for real users why, and can you fix that?
This is one of the most common issues I see. It's usually caused by database connection limits, auth token handling, or logic that only works under specific test conditions. I identify the actual cause and fix it so it holds up under real traffic.
Can you add Stripe payments to my existing app?
Yes full Stripe setup including one-time payments, subscriptions, and webhook configuration, tested end-to-end before handover.
What if you find more issues once you're in the project?
I'll flag anything outside the original scope before doing extra work, so there are no surprise charges. Bigger issues get a clear quote before I proceed.
Do you offer support after delivery?
Yes Standard and Premium packages include a post-delivery window for fixing any issues that come up. Details are in each package.
I'm not technical can you explain what was wrong in plain language?
Yes. Every fix comes with a short summary of what was broken and what I did, written so you can explain it to your team or investors without needing to read code.
How fast can you start?
I can usually begin within 24 hours of receiving project access and a clear description of the issue.
