I take products from zero to enterprise production, solo.
Founding engineer at QOOP, where I built and run Flat-Finder as the sole engineer. It's a multi-tenant 3D real-estate platform used by ImmoScout24, Mileway, and Formwerk. Eight years shipping for startups, agencies, and enterprises.
In production at ImmoScout24·Mileway·Formwerk
Featured project
Multi-tenant 3D B2B SaaS·QOOP GmbH
3D project explorer for German real estate. Multi-tenant Next.js platform with live 3D viewers, used by ImmoScout24, Mileway, and Formwerk.
Selected work
Work shipped in production, from multi-tenant SaaS to native macOS. Each one has a full case study.
Native macOS cleanup utility
Open-source native SwiftUI cleaner with a three-tier safety model. Nothing is ever hard-deleted.
Track record
7+ years of full-time and contract engineering, independent to founding.
QOOP GmbH·Remote (CET overlap)
Independent / Upwork + Fiverr·Remote
Toolbox
Tools and practices I reach for on production work.
Languages
Frameworks
Infrastructure
Practices
Free tools
No sign-up, no email wall. The same tools I use to scope real projects, free for anyone.
Writing
Working together
Three shapes most of my work takes. Each page explains what the engagement involves and who it suits.
Reviews
mindgatestudios
Germany
“Working with Nayeem was a pleasure! Very good communication and he went above and beyond to make sure I'm very happy with the outcome! At the same time he went beyond the original project scope while still delivering faster and for less money than he estimated. If you have any doubts if you should hire him for your project: don't. You won't regret it.”
shiweizhou
United States
“I have been working with him for several milestones now and we just hit a major milestone. Good communication and really promising quality. Will stay in a long-term cooperation.”
alexlapierre_
Canada
“Appban was quick to reply and delivered fairly quickly on building and refining our platform. Overall I am happy with his work and will definitely work with him again. He has a good knowledge of Unreal Engine.”
atacms
United States
“The seller was very prompt, communicative and gave me detailed explanations about how the system he created would work and demonstrated the logic of how the program worked. I would continue to work with Appban as he did a great job.”
marnwood
United Kingdom
“Appban's professionalism was amazing. Great communication, awesome turnaround time, and all-round solid Unreal Engine dev. Will be working with again.”
parasto
Sweden
“Amazing development! Understood and executed above expectations. Highly recommended!”
Project
Full stack next.js development & Optimization
“A talented and reliable developer who not only finds solutions to every problem but also provides valuable suggestions that enhance our work. He thinks ahead, contributes innovative ideas, and is always helpful. I can wholeheartedly recommend working with him.”
Project
Unreal Engine Developer
“Nayeem is professional, skillful, and communicative. I have been working with him before contracting him on Upwork.”
Project
Delivery of a UE4 blueprint for car animation
“Nayeemur ist a reliable worker, his communication is excellent and he adjusted everything until we were entirely satisfied.”
Contact
If you're building something and want a hand, write to me. Same if you just want a second opinion on an architecture decision.
Prefer to talk? Grab 15 minutes in my calendar.
