You will get custom web app using Node.js | Nest.js | React
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⭐ IMPORTANT: Every Client has custom requirements - let's talk in Upwork Chat before ordering
All Full Stack Development / Customization / Updates / Fixes will be done at $25/hr. Can give fixed price also after communication in Upwork messages. ⭐
After discussing your complete project requirements in the Upwork chat - Will share you fix price & timeline for project completion. Let's start talk with the Section below.
All Full Stack/ MERN / React new development / customization/updates/fixes will be done at $25/hr.
My Services includes
MEAN stack-based development, including full-stack website development
Website development and web application development using MERN, React.js, Nest.js Node.js, and MongoDB
Conversion of PSD/Xd/Figma designs into responsive websites using React.js, Redux, and Node.js
APIs development and integration to enhance website functionality
Code debugging and optimization for fast loading and improved performance
Ensuring mobile responsiveness and cross-browser compatibility for seamless user experience
Fixing bugs and issues in existing websites to ensure smooth operation and user satisfaction
Thanks
All Full Stack Development / Customization / Updates / Fixes will be done at $25/hr. Can give fixed price also after communication in Upwork messages. ⭐
After discussing your complete project requirements in the Upwork chat - Will share you fix price & timeline for project completion. Let's start talk with the Section below.
All Full Stack/ MERN / React new development / customization/updates/fixes will be done at $25/hr.
My Services includes
MEAN stack-based development, including full-stack website development
Website development and web application development using MERN, React.js, Nest.js Node.js, and MongoDB
Conversion of PSD/Xd/Figma designs into responsive websites using React.js, Redux, and Node.js
APIs development and integration to enhance website functionality
Code debugging and optimization for fast loading and improved performance
Ensuring mobile responsiveness and cross-browser compatibility for seamless user experience
Fixing bugs and issues in existing websites to ensure smooth operation and user satisfaction
Thanks
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$150
|
Standard
$700
|
Advanced
$1,500
|
|---|---|---|---|
| Delivery Time | 2 days | 15 days | 25 days |
Number of Revisions | 4 | 7 | Unlimited |
Number of Pages | 1 | 10 | 15 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | |||
Source Code | - | - |
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BB
Bronwyn B.
May 14, 2026
Maintenance and development of smartwithaheart.org website
MP
Mike P.
May 8, 2025
Dev Ops Engineer
EW
Emma W.
Mar 17, 2025
Ai Developer
MZ
Muhammad Jahangir Z.
Jun 5, 2024
Senior Full Stack Developer
Zaid full-stack development skills are top-tier. He understood our project, our requirements, asked the right questions, and was able to deliver what we asked for. The application he built is seamless, intuitive and performs flawlessly. Your attention to detail and ability to tackle both front-end and back-end challenges with such ease is impressive. We're excited to continue collaborating with you. Highly recommended!
MZ
Muhammad Jahangir Z.
Apr 27, 2024
Seeking Full Stack Developer with DevOPS Experience
If you're looking for a Full-stack engineer with DevOps expertise, Zaid is your guy! We hopped on a call, and I was absolutely blown away by our call, not only did he answer all of my questions, but he provided a lot of insights and recommendations that I would've never thought of. He's immediately responsive, his turnaround time is SO fast, he accommodated all of our extra requests, and he gave us a lot of his feedback as to how we can best tackle some of the challenges our business has been facing. We're excited about working with Zaid and his company on a new project as they're so fantastic at what they do.
About Zaid
AI MVP & SaaS Developer | RAG, LLM, Claude, Automation & Integrations
100%
Job Success
Lahore, Pakistan - 6:33 pm local time
I help startups, SaaS companies, and product teams build AI-powered products that are ready for real users, not just demos that fall apart in production.
My work sits at the intersection of AI, SaaS, automation, and production engineering: RAG systems, LLM and Claude integrations, AI workflows, backend APIs, data pipelines, and the infrastructure needed to keep everything reliable as the product grows.
𝐖𝐡𝐚𝐭 𝐈 𝐇𝐞𝐥𝐩 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐁𝐮𝐢𝐥𝐝
✅ AI MVPs & AI-powered SaaS products
✅ RAG applications & knowledge systems
✅ LLM, Claude & OpenAI integrations
✅ AI agents & intelligent workflows
✅ Business process automation
✅ Semantic search & intelligent retrieval
✅ OCR & document processing
✅ Structured data extraction
✅ AI-powered APIs & backend services
✅ Third-party integrations
𝐑𝐀𝐆, 𝐋𝐋𝐌 & 𝐀𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧
Building an AI demo is usually the easy part. Things get harder when it has to work with real business data, existing APIs, permissions, databases, queues, users, and production traffic.
That is where I usually come in.
I build RAG pipelines, semantic retrieval, document ingestion, contextual LLM workflows, structured extraction, AI-assisted review systems, and intelligent automation. My focus is making AI fit naturally into the product around it, not treating it like a separate experiment.
𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆:
Python | FastAPI | RAG | LLM | Claude | OpenAI API | Generative AI | OCR | Semantic Search | Automation
𝐀𝐈 𝐌𝐕𝐏𝐬, 𝐒𝐚𝐚𝐒 & 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐒𝐲𝐬𝐭𝐞𝐦𝐬
If you’re building an AI MVP or SaaS product, I can work beyond the AI layer itself.
I handle the APIs, databases, authentication, queues, caching, background jobs, integrations, and application architecture that make the product usable and scalable.
I’m also comfortable stepping into an existing Python, Rails, or Node.js codebase and adding AI capabilities without forcing a full rewrite.
𝗕𝗮𝗰𝗸𝗲𝗻𝗱:
Python | FastAPI | Ruby on Rails | Node.js | NestJS | PostgreSQL | MySQL | MongoDB | Redis | REST API | GraphQL
𝐀𝐈 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 & 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭 𝐖𝐨𝐫𝐤𝐟𝐥𝐨𝐰𝐬
Some of the best AI use cases are not chatbots. They are repetitive processes where teams spend hours reading documents, moving information between systems, reviewing data, or matching records.
I help automate those workflows through OCR, structured extraction, reconciliation, semantic search, AI-assisted review, human-in-the-loop verification, exception handling, and data processing pipelines.
The goal is simple: reduce manual work while keeping the workflow reliable enough for real business use.
𝐒𝐚𝐚𝐒, 𝐂𝐥𝐨𝐮𝐝 & 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧
Not every AI project starts with a new codebase. I have deep experience with mature SaaS applications, particularly Ruby on Rails, and can handle modernization, API upgrades, background processing, database optimization, performance work, and production troubleshooting.
I can also take ownership of the infrastructure around the product.
𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀:
AWS | Azure | GCP | Docker | Kubernetes | Terraform | GitHub Actions | GitLab CI/CD | Linux | Nginx
𝐒𝐞𝐥𝐞𝐜𝐭𝐞𝐝 𝐀𝐈 𝐏𝐫𝐨𝐝𝐮𝐜𝐭 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞
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AI-powered sports contract platform that reviews agreements against regulatory requirements and identifies conflicting clauses.
𝗦𝘁𝗮𝗰𝗸: Python | FastAPI | OpenAI | Next.js | PostgreSQL | BullMQ
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AI-powered clinical-trial reconciliation platform using OCR and automation for invoice intake, remittance extraction, payment matching, exception handling, and reviewer verification.
𝗦𝘁𝗮𝗰𝗸: Python | FastAPI | GLM-OCR | AWS | AWS SQS | Google Drive
✔ 𝗦𝗨𝗖𝗖𝗘𝗦𝗦.𝗔𝗜
AI-driven B2B sales SaaS covering lead discovery, enrichment, intelligent outreach, multichannel sequences, CRM workflows, and AI-assisted messaging.
𝗦𝘁𝗮𝗰𝗸: NestJS | React.js | Redis | MongoDB | Azure | BullMQ | Elasticsearch
𝐖𝐡𝐚𝐭 𝐘𝐨𝐮 𝐂𝐚𝐧 𝐄𝐱𝐩𝐞𝐜𝐭
✅ Strong technical ownership
✅ Production-focused AI engineering
✅ Deep SaaS & backend experience
✅ Practical AI automation, not just prototypes
✅ Clear communication from architecture through deployment
📩 If you’re building an AI MVP, AI-powered SaaS product, RAG application, Claude/LLM integration, or automation system, let’s talk about what you’re building.
Steps for completing your project
After purchasing the project, send requirements so Zaid can start the project.
Delivery time starts when Zaid receives requirements from you.
Zaid works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements Gathering
Before starting any development work, I will take the time to understand your requirements in detail.
Development
With your approval of scope, I will begin the development process. This will include Full Stack new development MERN updates / customization & fixes