You will get SaaS AI LLM web applications using Next.js, FastAPI, Node.js, and LangChain
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Project details
Amer here on this Side, a specialized developer for SaaS AI LLM web applications, proficient in Next.js 14, FastAPI, Node.js, LangChain, OpenAI, Pinecone, and other LLMs. My focus is on creating AI-driven SaaS applications that are efficient, innovative, and scalable.
Here's What I Offer:
• Frontend Development with Next.js: Crafting interactive, AI-enhanced user interfaces.
• Backend Solutions with FastAPI & Node.js: Building fast, scalable server-side applications.
• AI Integration using LangChain & OpenAI: Embedding advanced AI functionalities for smarter applications.
• Efficient Data Management: Leveraging vector databases integration with LLMs.
Why Choose Me?
• Expertise in cutting-edge technologies and AI.
• Commitment to quality and timely delivery.
• Focused on creating value-driven, innovative solutions.
Let's bring your vision to life with a SaaS AI LLM web app that stands out.
Your success is my ultimate goal! Get in touch today, and I'll provide an initial proposal for your review.
Here's What I Offer:
• Frontend Development with Next.js: Crafting interactive, AI-enhanced user interfaces.
• Backend Solutions with FastAPI & Node.js: Building fast, scalable server-side applications.
• AI Integration using LangChain & OpenAI: Embedding advanced AI functionalities for smarter applications.
• Efficient Data Management: Leveraging vector databases integration with LLMs.
Why Choose Me?
• Expertise in cutting-edge technologies and AI.
• Commitment to quality and timely delivery.
• Focused on creating value-driven, innovative solutions.
Let's bring your vision to life with a SaaS AI LLM web app that stands out.
Your success is my ultimate goal! Get in touch today, and I'll provide an initial proposal for your review.
Programming Languages
PHP, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, W3C Markup Validation ServiceWhat's included
| Service Tiers |
Starter
$300
|
Standard
$770
|
Advanced
$1,440
|
|---|---|---|---|
| Delivery Time | 3 days | 10 days | 15 days |
Number of Revisions | 1 | 3 | 5 |
Number of Pages | 1 | 3 | 6 |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | - | - | |
Source Code | - |
6 reviews
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BL
Bobby L.
Apr 6, 2026
PHP Developer
Thank you for the work on our project.
JA
Jeff A.
Mar 12, 2024
Devops/Admin for on and off long term work
Good work
SM
Sarmad M.
Jan 2, 2024
Full Stack Dev - Laravel / React Native Full-Time EST US Hours
Amer was a great resource, knows Laravel and React very well. Highly recommended :)
EE
Eidher E.
Sep 3, 2023
Freelance Fullstack Developer - CakePHP, Angular JS, Node JS, APIs, AWS, RESTful API, MySQL
Amer was a great developer and important part of our project. Would definitely recommend him for your next project. Good communication, skills and participation with other team members!
AM
Asad M.
Sep 26, 2022
Laravel and VUE Expert
Amer is an exceptional freelancer and would love to hire him again. It was a pleasure working with him, he was super fast and did quality work. Excellent communication and took great care of the code.
About Amer
Senior Full-Stack Engineer | Next.js & NestJS | SaaS, Payments, AI
100%
Job Success
Lahore, Pakistan - 1:54 pm local time
What I build:
🧠 AI-Powered Applications
I integrate Claude, OpenAI, and other LLMs into live production systems. RAG pipelines grounded in real business data, AI agents that automate manual work, and voice AI (Vapi, Retell) for customer facing flows. I use Claude Code and Cursor daily to move fast without dropping quality.
🌐 Full-Stack Web Applications
React, Next.js, and TypeScript on the front. Node.js, PHP, Laravel, NestJS, and Python on the back. I have shipped across SaaS, MVPs, healthcare, fintech, edtech, ERP, POS, inventory, banking, CRM, e-commerce, and government. One healthcare platform lifted reimbursement collection by over 20% after launch. One CRM I built helped land its company on the Inc. 5000 list of fastest growing companies in America.
📱 React Native Mobile Apps
Cross platform apps live on the App Store and Google Play for sports training and healthcare clients, both with active daily users.
⚙️ Laravel Backend Systems
Fintech and field service SaaS that handle real money and real operations. Stripe billing with proper webhook handling, multi-tenant data isolation, queue workers with Horizon, and Livewire and Filament dashboards that non-technical users run without training. Paying customers, live in production.
🤖 Automation and Integrations
n8n and Make workflows that run unattended, with real error handling, retries, and edge case coverage so they keep running when something unexpected happens. Playwright browser automation for platforms that have no API.
Core stack:
Frontend: React, Next.js, TypeScript, Tailwind
Backend: Node.js, NestJS, PHP/Laravel, Python/FastAPI
AI: Claude, OpenAI, RAG pipelines, vector databases, Vapi, Retell, n8n, Make
Mobile: React Native, Expo
Data: PostgreSQL, Supabase, MySQL, MongoDB, Redis
Cloud: AWS (Lambda, EC2, RDS, S3, IoT Core), DigitalOcean
Tools: Claude Code, Cursor, Docker, GitHub Actions, CI/CD
How I work:
I communicate clearly, flag blockers early, and review every line before it ships. Speed without the quality tradeoff. These are not side projects. They are systems businesses run on every day.
If you want a reliable senior engineer for an ongoing build or a focused project, send me a message and tell me what you are working on. I will tell you honestly whether I am the right fit.
Keywords:
Full Stack Developer, AI Developer, React Native Developer, Laravel Developer, Claude AI Integration, OpenAI API, RAG Systems, LLM Integration, Voice AI, n8n Expert, Make Automation, Workflow Automation, AI Agent Development, NestJS, Supabase, Node.js, Next.js, TypeScript, AWS, Healthcare SaaS, Fintech Developer, Mobile App Developer, Livewire, Filament, Browser Automation, Playwright, Prompt Engineering, Vector Databases, Generative AI, SaaS Development, API Integration, Custom AI Solutions
Steps for completing your project
After purchasing the project, send requirements so Amer can start the project.
Delivery time starts when Amer receives requirements from you.
Amer works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement gathering
In this step i will gather all your project details and will provide you with consultancy.