You will get a full-stack developer to fix or take over your Next.js and react app
Top Rated
Project details
A lot of my work is inheriting a codebase that is fragile, half-finished, or slow, and getting it back on track without breaking what is live.
I take over Next.js and Supabase apps and start with a short audit and a few low-risk fixes, so you see progress and know the honest state of what you have. Then I stabilize the parts that keep breaking. The top tier goes further: refactoring and building new features on top of a codebase I've made stable.
As a full-stack developer I work across the whole app, front end and back, so I can trace a problem wherever it lives. I don't push risky changes to production without a way to roll them back.
Before I start, I write the exact deliverable and acceptance criteria into the order. If the finished work does not meet that scope, I revise until it does or you do not pay.
I take over Next.js and Supabase apps and start with a short audit and a few low-risk fixes, so you see progress and know the honest state of what you have. Then I stabilize the parts that keep breaking. The top tier goes further: refactoring and building new features on top of a codebase I've made stable.
As a full-stack developer I work across the whole app, front end and back, so I can trace a problem wherever it lives. I don't push risky changes to production without a way to roll them back.
Before I start, I write the exact deliverable and acceptance criteria into the order. If the finished work does not meet that scope, I revise until it does or you do not pay.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$180
|
Standard
$450
|
Advanced
$850
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 14 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | - | ||
Detailed Code Comments | - | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$70
Fix one urgent bug
(+ 1 Day)
+$90Frequently asked questions
6 reviews
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MA
M Zaid A.
Aug 21, 2026
Senior Next.js dev to fix Supabase RLS + multi-tenant data leak
Furqan is a sharp full-stack developer who fixed a nasty multi-tenant data leak in our Next.js and Supabase app. Tracked the RLS issue down to the real root cause, fixed the row-level security properly, and sanity-checked the rest of our auth flow while he was in there. Careful work on a live production app, clear explanations, and genuinely good security instincts. Highly recommended.
GF
Gatsby F.
Dec 6, 2025
Recreate Framer site in NextJS and Tailwind CSS
RE
Robert E.
Jun 29, 2025
Full-Stack Developer (Firebase, Next.js)
Furqan contributed to the development of our Firebase-based web application, delivering a broad set of features — including activity management and the implementation of Incremental Static Regeneration. He demonstrated reliability and consistency throughout the project, and the quality of his work met a high standard.
SA
Saud A.
Aug 21, 2024
Full stack developer
Working with Furqan has been an absolute pleasure. He is a highly skilled developer with an impressive ability to manage projects efficiently and effectively. His technical expertise is matched by his excellent communication skills and professionalism. Furqan consistently delivers high-quality work on time and goes above and beyond to ensure the success of the project. I highly recommend him to anyone looking for a top-notch developer with strong project management capabilities
QM
Quentin M.
Jun 25, 2024
POKY Clone Project
Very good dev for web application !
Working with Furqan has been an absolute pleasure from start to finish. His dedication, expertise, and attention to detail have exceeded my expectations. Throughout our project, he consistently kept me informed, ensuring that every step was clear and that I was satisfied with the progress. His ability to understand complex requirements and translate them into functional, efficient code has been invaluable.
I am extremely happy with the final result, and I am confident that Furqan's contribution will greatly benefit our project as we move forward. I highly recommend Furqan for any development work, and I look forward to working with him on future projects.
Thank you, Furqan, for your exceptional work and dedication. Five stars all the way!
Working with Furqan has been an absolute pleasure from start to finish. His dedication, expertise, and attention to detail have exceeded my expectations. Throughout our project, he consistently kept me informed, ensuring that every step was clear and that I was satisfied with the progress. His ability to understand complex requirements and translate them into functional, efficient code has been invaluable.
I am extremely happy with the final result, and I am confident that Furqan's contribution will greatly benefit our project as we move forward. I highly recommend Furqan for any development work, and I look forward to working with him on future projects.
Thank you, Furqan, for your exceptional work and dedication. Five stars all the way!
About Furqan
Full-Stack Developer | AI SaaS, Next.js + Supabase, LLM Agents
100%
Job Success
Faisalabad, Pakistan - 4:37 am local time
6+ years full-stack Developer, Top Rated on Upwork. I work AI-native with Claude Code and Cursor daily, so I ship faster and clean up messy code faster than teams doing it by hand.
WHAT I BUILD
- AI and LLM features: OpenAI, Claude, and Gemini, plus RAG, vector search, agents, and agentic workflows
- Full-stack SaaS in Next.js (App Router), React, TypeScript, and Tailwind / shadcn/ui
- Supabase and PostgreSQL: auth, row-level security, and multi-tenant architecture
- Stripe billing done right: subscriptions, webhooks, and metered plans
- Taking over live codebases: audit, stabilize, then extend with AI
TAKING OVER AN EXISTING BUILD
A lot of my work as a Full-Stack Developer is inheriting something that already exists. I start by auditing what's there and telling you the honest state of it. I ship a few low-risk quick wins first, so you see progress and I earn trust. Then I stabilize the fragile parts, and only then extend with new AI features. The rule the whole time: don't break what's live.
RECENT WORK
- A large multi-tenant hospitality SaaS for a German client, roughly 58 interconnected subsystems
- An autonomous AI content-agent platform with Stripe subscriptions
- An AI document intake tool with automated extraction (Loom walkthrough available)
- AI scraping and lead-enrichment pipelines
HOW I WORK
I take ownership and ship without hand-holding. I communicate clearly and often, and I don't go quiet. I don't push risky changes to production without a rollback plan. Most clients start with one project and keep me on long term.
MY GUARANTEE
We scope a clear first milestone. If I don't deliver it to the spec we agreed, you don't pay for it. That takes the risk of hiring an unknown off your side of the table.
Tell me what you're building and where it's stuck, and I'll tell you honestly whether I'm the right person for it.
Steps for completing your project
After purchasing the project, send requirements so Furqan can start the project.
Delivery time starts when Furqan receives requirements from you.
Furqan works on your project following the steps below.
Revisions may occur after the delivery date.
Audit
I review the codebase and tell you the honest state of it and what I'd fix first.
Quick wins
I ship a few low-risk fixes so you see progress early.