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Shimanshu S.
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Shimanshu S.

AI Agent Developer | Voice AI, RAG, n8n Automation, LangChain

Hi, I am Shimanshu. A Full Stack AI Automation Developer. I build AI voice agents, multi-agent workflows, and business automation systems for service companies, real estate, healthcare, and sales teams. My clients use them to qualify leads, handle calls, automate follow-ups, and connect their CRM to everything else. If your business runs on conversations, follow-ups, internal workflows, customer data, or repetitive operational work, there is usually a lot we can automate. AI Voice Agents & Conversational AI I build AI voice agents, AI receptionists, and conversational AI systems for inbound and outbound workflows. These systems can: • Handle customer conversations • Qualify leads • Book appointments • Collect structured information • Run follow-up workflows • Escalate to a human when needed • Update the CRM after each interaction I work with Vapi, ElevenLabs, OpenAI Realtime API, Bland AI, Synthflow, Twilio, STT, TTS, and custom voice pipelines. I have worked on voice automation for service businesses, healthcare, real estate, insurance, legal services, home services, sales teams, and customer support operations. Multi- Agent Systems & AI Orchestration I build multi-agent systems where each agent is a real independent execution with its own model call, context, assignment, and output. Not one LLM pretending to be several agents. These systems coordinate research, analysis, strategy, content generation, review, revision, approval, and delivery. I work with LangChain, LangGraph, CrewAI, AutoGen, n8n, custom Python orchestration, DAG-based workflows, structured outputs, function calling, retries, conditional routing, and human approval gates. When needed, I also build durable state, crash recovery, provenance, audit trails, idempotency, and deterministic validation between steps. Workflow Automation & Business Process Automation I build automations using n8n, Make, Zapier, GoHighLevel, APIs, webhooks, and custom backend services. The pattern is usually simple: A lead or event enters the system → AI processes or qualifies it → the right action happens → records update → tasks are created → the right person is notified → nothing gets forgotten. Typical workflows include: • Lead capture and routing • Lead qualification and scoring • Automated follow-ups • Appointment scheduling • Proposal generation • Invoice triggers • Customer onboarding • Internal task automation • Data synchronization • Document generation • Reporting workflows • Repetitive back-office processes The goal is simple: remove manual work without making the system harder to understand or maintain. LLM Integration, RAG & AI Assistants I build AI assistants, chatbots, document Q&A systems, knowledge-base agents, data extraction pipelines, and AI-powered SaaS features. I work with OpenAI, Claude, Gemini, LangChain, LangGraph, RAG, embeddings, vector databases, structured outputs, function calling, tool use, memory, context management, and evaluation pipelines. Use cases include: • Standalone AI products • Internal knowledge assistants • Customer-facing support agents • Document intelligence systems • AI-powered search • Content generation workflows • Structured data extraction • AI features inside existing SaaS products For retrieval, I work with Pinecone, Chroma, Qdrant, Weaviate, pgvector, FAISS, and custom retrieval setups. CRM & Business System Integration I connect AI and automation into the systems your business already uses. GoHighLevel, HubSpot, Zoho CRM, Salesforce, Airtable, spreadsheets, payment systems, scheduling tools, REST APIs, GraphQL, OAuth, webhooks, and custom databases. The goal is to make AI outputs turn into real actions inside your existing workflow. Tech Stack Backend & Full Stack Python, JavaScript, Node.js, React, Next.js, FastAPI AI & Agents OpenAI, Claude, Gemini, LangChain, LangGraph, CrewAI, AutoGen Voice AI Vapi, ElevenLabs, OpenAI Realtime API, Twilio, Bland AI, Synthflow Automation n8n, Make, Zapier, GoHighLevel Databases & Retrieval PostgreSQL, SQLite, MongoDB, Redis, Pinecone, Chroma, Qdrant, Weaviate, pgvector Infrastructure Docker, AWS, GCP, Vercel, Render Integrations REST APIs, GraphQL, webhooks, OAuth, Stripe API, custom third-party integrations I write production code, not just prompt chains or no-code automations. Availability: Up to 40 hrs/week. I typically respond within the hour and can start same day on most projects. Send me your project details and I will reply with a clear execution plan, not a sales pitch.

🇮🇳Mohali, India$18/hr100% JSS4.90 (7)Since Sep 2021
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Earnings and projects

MRR
$1.1k

Last 6 months ÷ 6

World#45,370 / 412k
🇮🇳Country#5,060 / 45.9k
Revenue, last 30 days
$0

Last 6 months: $6.4k

Total earnings
$31k

Billed in all: $33k

World#107,962 / 412k
🇮🇳Country#15,300 / 45.9k
Per project
$2.2k

$1.6k in the last 6 months

World#71,235 / 412k
🇮🇳Country#8,579 / 45.9k
Projects, last 6 months
4
50% fixed50% hourly
World#51,813 / 412k
🇮🇳Country#6,157 / 45.9k
Projects in all
14

Across 18 contracts

22% fixed78% hourly
World#168,283 / 412k
🇮🇳Country#23,126 / 45.9k

Earnings, last 30 days

$33.2kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$32.5k$33.0k$33.5k$34.0kOct 8Oct 23Nov 7

Skill rankings: Top 11% in ML Automation

Ranked by MRR among everyone on Upwork with the skill.

  1. #32ML Automation279 freelancers · 🇮🇳 #10Top 11%
  2. #52AI Speech-to-Text336 freelancers · 🇮🇳 #16Top 15%
  3. #83ElevenLabs638 freelancers · 🇮🇳 #20Top 13%
  4. #122Twilio API710 freelancers · 🇮🇳 #30Top 17%
  5. #155Conversational AI782 freelancers · 🇮🇳 #27Top 20%
  6. #206Vector Database1,142 freelancers · 🇮🇳 #61Top 18%
  7. #480AI Implementation2,382 freelancers · 🇮🇳 #113Top 20%
  8. #537Large Language Model2,726 freelancers · 🇮🇳 #109Top 20%