You will get a Legacy System Audit & Modernization Roadmap
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Top Rated
Project details
Modernizing a legacy application is about more than upgrading technology. It's about reducing risk, improving maintainability, and giving your platform a solid foundation for future growth.
I'll review your existing application, architecture, infrastructure, and development practices to identify technical debt, scalability issues, security concerns, outdated dependencies, and performance bottlenecks. You'll receive practical recommendations based on your current system, not generic advice.
Depending on your selected package, I'll also prepare a modernization roadmap covering the recommended technology stack, migration approach, architecture improvements, implementation phases, estimated timeline, and priorities.
This service is ideal for businesses, startups, and engineering teams maintaining applications that have become difficult to scale, expensive to maintain, or slow to develop. Whether you're planning a gradual refactor, cloud migration, or a complete rebuild, you'll leave with a clear roadmap that your team or any development partner can confidently execute.
I'll review your existing application, architecture, infrastructure, and development practices to identify technical debt, scalability issues, security concerns, outdated dependencies, and performance bottlenecks. You'll receive practical recommendations based on your current system, not generic advice.
Depending on your selected package, I'll also prepare a modernization roadmap covering the recommended technology stack, migration approach, architecture improvements, implementation phases, estimated timeline, and priorities.
This service is ideal for businesses, startups, and engineering teams maintaining applications that have become difficult to scale, expensive to maintain, or slow to develop. Whether you're planning a gradual refactor, cloud migration, or a complete rebuild, you'll leave with a clear roadmap that your team or any development partner can confidently execute.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$500
|
Standard
$800
|
Advanced
$3,500
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 15 days |
Number of Revisions | Unlimited | Unlimited | Unlimited |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
Frequently asked questions
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LL
Lord L.
Jul 19, 2026
React Native Developer for ios app
Thank you to Abdullah for completing the project perfectly
LL
Lord L.
Jul 7, 2026
Experienced TypeScript Developer Needed
Excellent developer
He completed the project professionally and delivered high-quality work.
Communication was clear, he was responsive throughout the project, and he addressed all requested changes quickly.
The final result met my expectations, and I would definitely work with him again. Highly recommended
He completed the project professionally and delivered high-quality work.
Communication was clear, he was responsive throughout the project, and he addressed all requested changes quickly.
The final result met my expectations, and I would definitely work with him again. Highly recommended
ZA
Zain A.
Mar 17, 2026
Full stack development
SG
Sean G.
Mar 6, 2025
Migration of the Pixel Art App
AI
Aliyan I.
Nov 18, 2024
Full Stack Website
About Abdullah
Software Engineer shipping daily for 620K+ users
100%
Job Success
Lahore, Pakistan - 8:57 pm local time
Now you need someone who can turn it into a real product with clean architecture, reliable code, scalable infrastructure, and a well thought off user experience.
That is where I come in.
I am a Senior Full Stack Developer who helps founders and product teams build, fix, and scale SaaS products, MVPs, dashboards, marketplaces, internal tools, and AI powered web applications.
I work across the full stack:
React | Next.js | Node.js | Express | APIs | Databases | Auth | Payments | Dashboards | Deployment | AI integrations
I do not just take tickets and write code. I understand the product, question weak assumptions, plan the architecture, build the system, and stay close to the code until it is ready for real users.
I will tell you when something is worth building. I will also tell you when something should wait.
𝐒𝐞𝐥𝐞𝐜𝐭𝐞𝐝 𝐏𝐫𝐨𝐝𝐮𝐜𝐭 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞
1 - Tapforce, where I shipped a US Edtech LMS Platform with 620K+ students and worked on learning workflows, role based access, course delivery, and production ready full stack features since June 2025.
2 - Dubizzle Labs / OLX / Zameen / Bayut, where I contributed to large-scale marketplace and PropTech platforms including Zameen, with around 3M monthly active users, Bayut KSA, with around 5M monthly active users. Also includes work on OLX, an e-commerce platform with around 2M monthly active users.
3 - NPC Labs, an 18m$ funded Web3 startup, where I delivered a Web3 pixel art platform and focused on frontend quality, UX, and smooth product flows.
4 - Dropella, an e-commerce tools product, where I worked for around a year, helped lead 10 junior developers, and drive the release of v1.
5 - Nybble, a UK based technology partner, where I delivered 10+ full stack projects across web apps, dashboards, portals, and business software.
Before focusing seriously on Upwork, most of my work came through direct clients, product teams, and development partners outside the platform. I am thus taking on a limited number of projects at an introductory platform rate while I build history here. So as great of an opportunity for you as it gets. Get gold for the price of silver.
𝐖𝐡𝐚𝐭 𝐈 𝐂𝐚𝐧 𝐇𝐞𝐥𝐩 𝐖𝐢𝐭𝐡
SaaS MVPs and web apps:
Auth | RBAC | Dashboards | Client portals | APIs | Databases | Payments | Subscriptions | Analytics | Deployment
MVP rebuilds and audits:
Architecture cleanup | Database redesign | Performance fixes | Auth and permissions | Security improvements | Codebase restructuring | Production readiness
AI features and architecture:
OpenAI API | Claude API | LangChain | LangGraph | RAG | Embeddings | Vector databases | Pinecone | AI chatbots | AI agents | Prompt engineering | Workflow automation | n8n | Make | Token optimization
Backend and APIs:
Node.js | Express | REST APIs | Webhooks | PostgreSQL | MongoDB | Supabase | Firebase | Redis | Stripe | PayPal | Third party APIs
Frontend and product experience:
React | Next.js | TypeScript | JavaScript | Figma to frontend | Responsive apps | Complex dashboards | Forms | Data tables | Admin panels | UX improvements
Cloud, security, and integrations:
Vercel | AWS | Docker | GitHub | CI/CD | Nginx | OAuth2 | JWT | RBAC | MFA | Audit logging | Secure API design | Google APIs | CRM tools | Email tools | Veriff
𝐀 𝐆𝐨𝐨𝐝 𝐅𝐢𝐭 𝐈𝐟
You need someone who can think beyond tickets, understand business logic, make smart technical decisions, communicate clearly, and build software that can survive real users.
𝐍𝐨𝐭 𝐚 𝐆𝐨𝐨𝐝 𝐅𝐢𝐭 𝐈𝐟
You only want the cheapest developer, need someone to say yes to everything, or want a rushed build with no concern for quality, security, or maintainability.
𝘐𝘧 𝘺𝘰𝘶'𝘳𝘦 𝘴𝘵𝘪𝘭𝘭 𝘳𝘦𝘢𝘥𝘪𝘯𝘨, 𝘸𝘦 𝘴𝘩𝘰𝘶𝘭𝘥 𝘱𝘳𝘰𝘣𝘢𝘣𝘭𝘺 𝘵𝘢𝘭𝘬.
𝘚𝘦𝘯𝘥 𝘢 𝘮𝘦𝘴𝘴𝘢𝘨𝘦. 𝘞𝘰𝘳𝘴𝘵 𝘤𝘢𝘴𝘦, 𝘺𝘰𝘶 𝘨𝘦𝘵 𝘧𝘳𝘦𝘦 𝘢𝘥𝘷𝘪𝘤𝘦.
I'm picky about who I work with. So are you. Let's find out if we match and get to work :)
Steps for completing your project
After purchasing the project, send requirements so Abdullah can start the project.
Delivery time starts when Abdullah receives requirements from you.
Abdullah works on your project following the steps below.
Revisions may occur after the delivery date.
Access Setup and Stakeholder Review
I set up read-only access or walkthrough sessions, speak with key stakeholders, confirm pain points, and define audit priorities.
Architecture and Dependency Mapping
I map the current architecture, data flows, dependencies, integrations, databases, and high-risk areas that affect maintainability.