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Ali Ahsan N.
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Ali Ahsan N.

Senior Full Stack Engineer | AI Expert | AI Automation

Sr. Full Stack AI Engineer with 8+ years of Full Stack experience with MERN/MEAN, Javascript, Typescript developing and leading AI applications end to end that drive real business outcomes. AI & LLM Expertise: - Retrieval-Augmented Generation (RAG) pipelines (vector DBs, hybrid search, reranking) - AI Agents & Tool Use (LangChain, custom agent orchestration, function calling) - Conversational AI (chatbots, voice agents, multi-turn memory systems) - Prompt Engineering & Structured Outputs (JSON schemas, validation layers) - Real-time AI systems (streaming responses, WebRTC + LLM integration) - Multi-step AI pipelines (generation → validation → action workflows) - LLM integrations (OpenAI, Claude, open-source models like LLaMA) 🚀AI Projects: AI Phone Agent Platform: - Developed an AI receptionist handling real-time calls, lead qualification, and appointment booking - Implemented LLM-driven conversations with sub-2s streaming responses - Designed queue-based architecture (Redis + BullMQ) for outbound AI calling workflows - Integrated Twilio, SMS automation, and multi-tenant SaaS logic RevenueReceptionist (AI Automation System): - Developed AI agents for lead qualification, booking, and CRM automation - Built multi-channel workflows (voice, SMS, API integrations) - Designed reliable execution pipelines with retries, idempotency, and observability AI Voice + Interview Platform: - Developed real-time AI interview system using WebRTC + LLMs - Implemented voice-to-AI pipelines with live feedback and analytics - Designed structured evaluation system for candidate responses Elunic (Industrial AI & Smart Automation Systems) - Worked on AI-driven industrial systems integrating machine data with cloud platforms - Designed intelligent workflows for predictive insights and operational automation - Built data pipelines to process real-time signals and convert them into actionable outputs - Focused on reliability, scalability, and integration with enterprise systems I have also developed CRM systems, B2B SaaS products, workflow automation platforms, and data-intensive applications handling complex database structures and real-time processing. My focus is not just shipping features but designing systems that scale cleanly, remain maintainable, and survive long-term growth. 🧰 AI Stack: - LLMs: OpenAI (GPT-4), Claude, LLaMA - Frameworks: LangChain, custom agent frameworks - Vector DBs: Pinecone, Supabase, pgvector - Backend: Node.js, Python (FastAPI) - Realtime: WebSockets, WebRTC - Queues: BullMQ, Redis - Cloud: AWS (Lambda, ECS, S3) Other Full-Stack Expertise: - React, Next, Angular, Node, Nest, .Net Core - Sanity, Storyblok, Strapi, Contentful - MySQL, PostgreSQL, MongoDB, Elastic Search - SOLID, KISS, DRY, Test-driven Development (TDD), Microservices, Serverless Architecture, Domain Driven Design (DDD) - AWS, Azure Cloud Services, Azure Pipeline, CI/CD DevOps 𝐋𝐞𝐭'𝐬 𝐜𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐞 to bring your project to life! Whether it's developing AI system development, architecting scalable solutions, or ensuring top-notch performance, I've got you covered. 𝑹𝒆𝒂𝒄𝒉 𝒐𝒖𝒕, 𝒂𝒏𝒅 𝒍𝒆𝒕'𝒔 𝒕𝒖𝒓𝒏 𝒚𝒐𝒖𝒓 𝒗𝒊𝒔𝒊𝒐𝒏 𝒊𝒏𝒕𝒐 𝒓𝒆𝒂𝒍𝒊𝒕𝒚. 👨‍💻

🇵🇰Rawalpindi, Pakistan$30/hr100% JSS4.63 (13)Since Feb 2024

Earnings and projects

MRR
$845

Last 6 months ÷ 6

World#55,571 / 412k
🇵🇰Country#6,613 / 52.9k
Revenue, last 30 days
$0

Last 6 months: $5.1k

Total earnings
$48k

Billed in all: $50k

World#79,061 / 412k
🇵🇰Country#6,834 / 52.9k
Per project
$2.8k

$2.5k in the last 6 months

World#58,815 / 412k
🇵🇰Country#4,120 / 52.9k
Projects, last 6 months
2
0% fixed100% hourly
World#88,918 / 412k
🇵🇰Country#17,051 / 52.9k
Projects in all
17

Across 18 contracts

39% fixed61% hourly
World#149,089 / 412k
🇵🇰Country#24,806 / 52.9k

Earnings, last 30 days

$50.4kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$49k$50k$51k$52kOct 8Oct 23Nov 7

Skill rankings: Top 12% in MongoDB

Ranked by MRR among everyone on Upwork with the skill.

  1. #36Strapi205 freelancers · 🇵🇰 #3Top 18%
  2. #38Enterprise Software Development180 freelancers · 🇵🇰 #9Top 21%
  3. #526NestJS3,757 freelancers · 🇵🇰 #119Top 14%
  4. #684Back-End Development4,183 freelancers · 🇵🇰 #167Top 16%
  5. #784LangChain3,821 freelancers · 🇵🇰 #316Top 21%
  6. #861Retrieval Augmented Generation3,618 freelancers · 🇵🇰 #318Top 24%
  7. #867Angular6,816 freelancers · 🇵🇰 #114Top 13%
  8. #873FastAPI4,337 freelancers · 🇵🇰 #274Top 20%