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English
$
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Abdul Mannan
@devmannan
Level 2
Expert Agentic AI, Langchain, GenAI, N8N, RAG, LLM, Full Stack Engineer
Pakistan
Spanish, English, Chinese, Japanese, German, French, Dutch, Italian, Swedish, Arabic, Norwegian, Danish
About me
I am a Senior Software Engineer with 9+ years of experience in Web App Development and cutting-edge AI/LLM Integrations.
My expertise covers full stack AI development where I design, build, and deploy scalable applications while integrating advanced AI features into existing platforms.
I specialize in custom chatbots (RAG & Agentic RAGs using LangChain, LangGraph, LangFlow, LangSmith) and workflow automations with tools like n8n, Make.com, and Monday.com to simplify and optimize business processes.
Skills
Abdul Mannan
$20/hour
Offline •
Average response time: 1 hour
See my services
AI Websites & Software
I will develop ai saas app ai chatbot ai web app ai agent ai application developer
Automations & Agents
I will be generative ai ml llm ai agent ai chatbot python and full stack developer
Want to work on an hourly basis?
Tell Abdul Mannan what you need.
$20
/
hourPortfolio
Work experience
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AI Lead / Full Stack Engineer
Fiverr • Self-employed
Feb 2019 - Present • 7 yrs 7 mos
Full-Stack Engineer, Solution Architect, and AI/ML Specialist with extensive experience designing and delivering scalable web platforms, cloud-native applications, and intelligent AI solutions. Full-Stack Development: React, Next.js, Node.js, Python, FastAPI, PostgreSQL, MongoDB, Microservices, REST/GraphQL APIs, Event-Driven Architectures, Authentication (JWT/OAuth), Payment Integrations, Docker, Kubernetes, AWS, GCP, and Vercel. AI & Generative AI: LLM Integration (OpenAI, Claude, Gemini), RAG Systems, LangChain, LangGraph, AI Agents, Chatbots, Vector Databases (pgvector, Pinecone, Weaviate), Prompt Engineering, NLP, Computer Vision, Embeddings, and MLOps. Successfully delivered 50+ products including SaaS platforms, marketplaces, enterprise dashboards, AI assistants, e-commerce solutions, booking systems, recommendation engines, and knowledge-base chatbots for clients across North America, Europe, Asia, and Latin America. Led and mentored engineering teams of 3–30 developers, managing end-to-end product delivery from architecture and strategy to deployment and scale. Core Technologies: React, Next.js, Node.js, Python, FastAPI, LangChain, LangGraph, OpenAI API, Claude API, PostgreSQL, pgvector, Microservices, AWS.
41 Reviews
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-5 out of 41 Reviews
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Most relevant
jesussalin
United States
Abdul is a talented developer, he delivered Clean Claude Code-based multi-agent chatbot with knowledge base retrieval. I wish him best of luck !!!
Helpful?
sarah_cat85
United States
Ongoing collaboration
The AI FAQ Generator was delivered with a clean frontend flow, structured prompt engineering, OpenAI-style AI integration, FAQ generation logic, input validation, and solid error handling. The challenging part was managing relevant business-specific outputs through proper AI workflow design and multi-agent...
Helpful?
daviskyle1
United States
Ongoing collaboration
Really satisfied with the delivery. Abdul added a clean multi-provider AI integration layer for OpenAI, Claude, Perplexity, Gemini, and Grok, with reusable backend services, .env API key setup, provider switching, error handling, and fallback logic. The demo features for AI product descriptions, smart...
$50
Price
7 days
Duration
Helpful?
kenhuynh11
United States
Ongoing collaboration
Abdul delivered a neat AI chatbot proof of concept with a simple web UI, FastAPI backend, and OpenAI API integration. The code was easy to follow, the setup instructions were clear, and the chatbot worked well for testing the basic conversation flow.
Helpful?
sarah_cat85
United States
Ongoing collaboration
Fast delievery on the AI Support Triage Agent using Python, FastAPI, LLM/API integration, structured JSON output, message classification, priority detection, and clean error handling. Highly recommended !!!
Helpful?
