You will get scalable management system web app with dashboard & crm
Project details
Off-the-shelf software rarely fits how your organization works. You pay for features you do not need and lack the ones you do. A custom-built system ends that cycle permanently.
I build fully custom management web applications designed around your workflows. The system can include user registration, role-based access, staff management, scheduling, records, billing, invoicing, payment integration, reports, notifications, and analytics — scoped precisely to your operation.
I have delivered systems for healthcare organizations, schools, agencies, and businesses needing CRM, ERP, or internal operations tools. Every project starts with understanding your processes before any code is written.
The stack is production-grade: Next.js and NestJS, PostgreSQL or MongoDB, Prisma, TypeScript, Tailwind CSS, and Docker. Code is clean and structured so your team can maintain and extend it independently.
I deliver on schedule and communicate at every milestone. Message me today to discuss your requirements.
I build fully custom management web applications designed around your workflows. The system can include user registration, role-based access, staff management, scheduling, records, billing, invoicing, payment integration, reports, notifications, and analytics — scoped precisely to your operation.
I have delivered systems for healthcare organizations, schools, agencies, and businesses needing CRM, ERP, or internal operations tools. Every project starts with understanding your processes before any code is written.
The stack is production-grade: Next.js and NestJS, PostgreSQL or MongoDB, Prisma, TypeScript, Tailwind CSS, and Docker. Code is clean and structured so your team can maintain and extend it independently.
I deliver on schedule and communicate at every milestone. Message me today to discuss your requirements.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$300
|
Standard
$750
|
Advanced
$1,500
|
|---|---|---|---|
| Delivery Time | 14 days | 30 days | 45 days |
Number of Revisions | 2 | 4 | 6 |
Number of Pages | 5 | 10 | 20 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$50
Additional Page
(+ 3 Days)
+$100
Content Upload
(+ 2 Days)
+$80
Payment Gateway Integration
(+ 5 Days)
+$250
Advanced Reports & Analytics
(+ 6 Days)
+$300
Server Deployment & Docker Setup
(+ 7 Days)
+$350Frequently asked questions
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MM
MD Sobuj M.
Mar 13, 2026
Fix Database & API Performance Issue (NestJS, Prisma, PostgreSQL)
Absolutely exceptional work! The developer transformed our API and database performance, making everything faster, smoother, and more reliable. Communication was seamless, solutions were thoughtful and precise, and the project was delivered ahead of schedule. Truly professional and highly recommended for anyone needing top-tier backend expertise!
TR
Tagor R.
Mar 8, 2026
Frontend Developer Needed to Fix Bugs and Improve SaaS
Excellent problem-solving skills! Mahabubur Rahman was able to quickly figure out tricky frontend bugs and made our SaaS dashboard easier to use and faster to use. He is a reliable professional who has a high level of experience. We would definitely hire him again.
PD
Peter D.
Jun 6, 2021
Data Scraping U. S.Liquor Stores State by state
SD
Sam D.
Jun 5, 2021
Virtual assistant needed 2
Mahabubur is an amazing team player and does his job excellently and very quickly! I will work with Mahabubur for future projects for sure!
AS
Alex S.
Mar 4, 2021
Generate Hong Kong based leads from LinkedIn and Web
Mahabubur found some interesting leads for me. I was happy with the work done, especially considering he is relatively new to Upwork. Some minor issues that we had along the process were probably related to my lack of clear instructions. But Muhabubur was quick and willing to fix any issues that occurred.
About Mahabubur
Software Engineer | System Architect | Web App Developer | SaaS & MVP
100%
Job Success
Bogra, Bangladesh - 3:13 am local time
I am a Full Stack Software Enginner experienced in building scalable, production-ready applications using React.js, Next.js, Node.js, NestJS, FastAPI, MongoDB, and PostgreSQL. I enjoy working across the full stack — from crafting clean, responsive interfaces to designing the backend architectures that power them reliably over time.
✦ 𝗠𝗩𝗣 — 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗙𝗮𝘀𝘁 𝗙𝗼𝗰𝘂𝘀𝗲𝗱 𝗔𝗻𝗱 𝗕𝘂𝗶𝗹𝘁 𝗧𝗼 𝗘𝘃𝗼𝗹𝘃𝗲
If you have an idea and need it validated quickly, I understand how to scope and build an MVP that proves the concept without overengineering it. I help identify what truly needs to be in the first version, what can come later, and how to structure the codebase from day one so that adding features later does not mean rewriting everything. A well-built MVP is not just fast to launch — it is ready to grow the moment your users give you direction.
✦ 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 — 𝗗𝗲𝘀𝗶𝗴𝗻𝗲𝗱 𝗜𝗻 𝗙𝗿𝗼𝗺 𝗧𝗵𝗲 𝗦𝘁𝗮𝗿𝘁
I think about performance early rather than as an afterthought. I work with Redis for caching, WebSockets for real-time communication, and Kafka for asynchronous event processing. I pay close attention to query design, indexing, and data access patterns — small decisions that have a significant impact when a system is under real load. My goal is always an application that feels responsive to the user regardless of what is happening behind the scenes.
✦ 𝗗𝗲𝗯𝘂𝗴𝗴𝗶𝗻𝗴 — 𝗠𝗲𝘁𝗵𝗼𝗱𝗶𝗰𝗮𝗹 𝗔𝗻𝗱 𝗧𝗵𝗼𝗿𝗼𝘂𝗴𝗵
When something breaks in production, I find it methodically. I trace failures layer by layer — from the UI through the API, into the service logic and down to the database — rather than guessing and redeploying. I use structured logging, distributed tracing, and Grafana to understand what a system is doing at runtime. After every fix I write a regression test so the same issue cannot quietly return. I have come to see bugs not just as problems to close, but as signals the system is trying to communicate something worth understanding.
✦ 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 — 𝗕𝘂𝗶𝗹𝘁 𝗧𝗼 𝗚𝗿𝗼𝘄 𝗪𝗶𝘁𝗵 𝗬𝗼𝘂𝗿 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀
I enjoy thinking through how a system needs to behave not just today but as it scales. I have experience designing with micro-frontends, microservices, Module Federation, and event-driven patterns — architectures where early decisions carry long consequences. I implement RBAC and security practices that protect data at every layer. I try to write code that the next developer can understand, extend, and feel good about working with.
✦ 𝗖𝗿𝗶𝘁𝗶𝗰𝗮𝗹 𝗧𝗵𝗶𝗻𝗸𝗶𝗻𝗴 — 𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝗧𝗵𝗲 𝗥𝗲𝗮𝗹 𝗥𝗲𝗾𝘂𝗶𝗿𝗲𝗺𝗲𝗻𝘁
My background in competitive programming — solving algorithmic challenges across Codeforces, LeetCode, AtCoder, and HackerRank — taught me to fully understand a problem before jumping to a solution. I carry that habit into every client project. I ask questions early, flag edge cases before they become incidents, and make sure what gets built actually solves the right problem. Sometimes the most valuable thing I can offer is a clearer picture of what the project actually needs.
✦ 𝗔𝗜 𝗮𝗻𝗱 𝗜𝗻𝘁𝗲𝗹𝗹𝗶𝗴𝗲𝗻𝘁 —
I have practical experience integrating AI into production applications — intent-based search with Qdrant vector databases, fine-tuned LLMs including Llama and Mistral, and ML pipelines using TensorFlow, Keras, Scikit-learn, and Hugging Face. If your product needs intelligent features, I understand the infrastructure required to support them at a production level.
✦ 𝗪𝗵𝗮𝘁 𝗜 𝗕𝘂𝗶𝗹𝗱 —
☐ MVPs and early-stage products — scoped, structured, and ready to scale from day one
☐ Full stack web applications — end-to-end products built for scale and maintainability
☐ SaaS platforms — multi-tenant systems with dashboards, role management, and workflows
☐ Microservices and event-driven backends — resilient, independently deployable services
☐ Real-time systems — live updates, notifications, and collaborative features
☐ E-commerce platforms — product management, order flows, and payment integrations
☐ REST APIs and database architectures — clean, documented, and built to integrate
☐ Authentication and security systems — RBAC, JWT, OAuth built to production standards
☐ AI-powered applications — intelligent search, LLM pipelines, and ML-driven features
I treat every engagement as a collaboration. I share progress regularly, raise concerns early, and give honest assessments even when that means respectfully pushing back on a direction that might cause problems later. I adapt to both technical founders who want to go deep and non-technical clients who need a trusted partner making the right calls on their behalf.
Steps for completing your project
After purchasing the project, send requirements so Mahabubur can start the project.
Delivery time starts when Mahabubur receives requirements from you.
Mahabubur works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Review
I will review your project details, required features, user roles, workflow, design references, and technical needs.
Project Planning
I will prepare the system structure, page/module list, database plan, and development roadmap.