# Chaitanya Sharma — AI & Full-Stack Developer for Hire

> Claude Certified AI and full-stack developer based in Delhi, India, working remotely with clients in the US, Japan, Australia and India. Builds AI agents, SaaS products, internal platforms and n8n / GoHighLevel automation. Founder and sole proprietor of Charyx Labs. Rates from $20/hour; fixed-price quotes for defined projects.

Key facts:
- Claude Certified Developer – Foundations (Anthropic, Sep 2026), 896/1000, verifiable on Credly: https://www.credly.com/badges/1470a632-1d6f-4040-999f-f3962817b0d6
- 100% Job Success on Upwork (11 jobs, 80+ hours); 4.8★ average client rating at Charyx Labs; 13+ businesses supported across 4 countries
- 1st place, ISRO Bharatiya Antariksh Hackathon 2025 (#1 of 8,744+ teams)
- Sole developer of OnOffDeals (real-estate SaaS, 311 automated tests) and Gurukin (free learning platform); built the PowerSmith Energy sales operations portal
- Stack: Python, FastAPI, React, TypeScript, MongoDB, PostgreSQL, Redis, Anthropic Claude, OpenAI, MCP, n8n, GoHighLevel, Stripe
- Contact: sharmachaitanya945@gmail.com · Book a call: https://calendly.com/sharmachaitanya945/meeting-with-me · Upwork: https://www.upwork.com/freelancers/~01f16adc9d2f50d399

## Hire

- [Hire an AI Developer](https://sharmachaitanya945.com/hire-ai-developer/): Hire an AI developer who ships to production: AI agents, SaaS and automation. 100% Upwork Job Success, Claude Certified Developer. Rates from $20/hour.
- [Rates from $20/hour](https://sharmachaitanya945.com/ai-developer-hourly-rate/): AI developer from $20 per hour: what the rate buys, hourly vs fixed-price, what drives cost, and how to start small with one automation live in about a week.
- [Client Ratings & Proof](https://sharmachaitanya945.com/top-rated-ai-freelancer/): Looking for the best rated AI freelancer? 100% Upwork Job Success across 11 jobs, a 4.8★ client rating, an ISRO hackathon win and a Claude certification.
- [Hire from India](https://sharmachaitanya945.com/hire-ai-developer-india/): Hire an AI developer from India who overlaps US working hours, writes C2-level English and contracts via Upwork or directly. Rates from $20/hour.
- [Hire a Full-Stack Developer](https://sharmachaitanya945.com/hire-full-stack-developer/): Hire a full stack developer for React, FastAPI, MongoDB and PostgreSQL: SaaS billing, auth, role-based portals and fixes to inherited code. From $20/hour.

## Services

- [AI Agent Development](https://sharmachaitanya945.com/services/ai-agent-development/): AI agent development services from a Claude Certified Developer: agents that call tools, use MCP, stay inside guardrails and pass evals. From $20/hour.
- [Claude API Developer](https://sharmachaitanya945.com/services/claude-api-developer/): Claude API developer and Claude Certified Developer (896/1000). I integrate Anthropic Claude with structured outputs, guardrails and evals. From $20/hour.
- [AI Chatbot Development](https://sharmachaitanya945.com/services/ai-chatbot-development/): AI chatbot development for websites and support: RAG answers from your knowledge base, lead qualification, booking and human handover. From $20/hour.
- [Voice AI Agents](https://sharmachaitanya945.com/services/voice-ai-agents/): Voice AI agent developer building Retell AI receptionists that answer calls, qualify callers, book appointments and follow up by SMS. From $20/hour.
- [MCP Server Development](https://sharmachaitanya945.com/services/mcp-server-development/): MCP server development by a Claude Certified Developer: Model Context Protocol servers that give AI agents safe, validated access to your tools. From $20/hour.
- [n8n Automation](https://sharmachaitanya945.com/services/n8n-automation/): n8n expert for hire: self-hosted or cloud workflows with webhooks, schedules, error handling and retries. 50+ automation workflows shipped. From $20/hour.
- [GoHighLevel Expert](https://sharmachaitanya945.com/services/gohighlevel-expert/): GoHighLevel expert for pipelines, funnels, workflows, snapshots, IVR and missed-call text-back, extended with webhooks and custom code. From $20/hour.
- [Make & Zapier Automation](https://sharmachaitanya945.com/services/make-zapier-automation/): Zapier and Make automation expert: build, fix and audit Zaps and scenarios, and know when a workflow should move to n8n or code. Rates from $20/hour.
- [Ads, Tracking & CRM](https://sharmachaitanya945.com/services/ads-tracking-crm/): Meta Ads to GoHighLevel tracking with GA4, Google Tag Manager, Meta Pixel and webhooks for closed-loop attribution, plus landing pages and A2P 10DLC setup.
- [SaaS Development](https://sharmachaitanya945.com/services/saas-development/): SaaS MVP development from one developer: auth, Stripe billing, multi-tenancy, automated tests and deploys. I built OnOffDeals end to end. From $20/hour.
- [Python & FastAPI](https://sharmachaitanya945.com/services/python-fastapi-development/): FastAPI developer for async Python backends: FastAPI, Motor/MongoDB, Redis, Pydantic 2 and pytest invariant tests. Django and Celery too. From $20/hour.
- [React Front End](https://sharmachaitanya945.com/services/react-frontend-development/): React developer for hire: React 18, Vite and Tailwind design systems, role-gated routing, Leaflet maps and SEO prerendering for SPAs. Rates from $20/hour.
- [API Integrations](https://sharmachaitanya945.com/services/api-integration/): API integration developer for Stripe, Clerk, DocuSign, Resend and GoHighLevel webhooks, built with retries, backoff and fallbacks. Rates from $20/hour.
- [Web Scraping & ETL](https://sharmachaitanya945.com/services/web-scraping-etl/): Web scraping developer for Python ETL: Selenium, Apify and Zillow API pipelines into CRMs and Google Sheets. Cut manual work ~70% for a client. From $20/hour.
- [Internal Tools](https://sharmachaitanya945.com/services/internal-tools-development/): Internal tools developer for sales ops portals, admin dashboards, commission engines with PDF statements and CRM sync. Built a 15-screen portal. From $20/hour.

## Industries

- [Real Estate & Proptech](https://sharmachaitanya945.com/industries/real-estate/): Real estate automation for investors and agents: deal analysis software, property-data pipelines, AI lead assistants and GoHighLevel follow-up.
- [Home Services & Trades](https://sharmachaitanya945.com/industries/home-services/): Home services automation for junk removal, roofing and other trades: voice AI that answers calls, IVR routing, missed-call text-back and quote follow-up.
- [Solar CRM & Sales](https://sharmachaitanya945.com/industries/solar/): Solar CRM automation for installers: referral and affiliate tracking, a commission engine, GoHighLevel sync and an Ops Portal built for 10–80 rep teams.
- [Healthcare & Medical AI](https://sharmachaitanya945.com/industries/healthcare-ai/): Healthcare AI developer with hands-on DICOM imaging pipelines, real-time facial recognition and doctor and clinic data extraction. Modest claims, careful code.
- [Legal & Document AI](https://sharmachaitanya945.com/industries/legal-documents/): Legal document automation and document AI: legal research assistants, PDF-to-CSV extraction, LaTeX-to-PDF pipelines, DocuSign and private local-first RAG.
- [Marketing Agencies](https://sharmachaitanya945.com/industries/marketing-agencies/): GoHighLevel automation for agencies: tested snapshots, sub-account setup, reusable workflows, ad-to-CRM attribution and white-label delivery. From $20/hour.
- [Education & EdTech](https://sharmachaitanya945.com/industries/education/): EdTech developer behind Gurukin: Claude exam prep, a 100-day JLPT N5 roadmap and a child-safe kids’ track, plus GoHighLevel funnels for course creators.

## Case studies and proof

- [Certifications](https://sharmachaitanya945.com/certifications/): Claude Certified Developer – Foundations (Anthropic), scored 896/1000 and verifiable on Credly, plus Stanford ML and Google GenAI certificates and an ISRO win.
- [About](https://sharmachaitanya945.com/about/): Chaitanya Sharma is an AI developer in Delhi and founder of Charyx Labs, building AI agents, SaaS products and automation for 13+ businesses in 4 countries.
- [OnOffDeals Case Study](https://sharmachaitanya945.com/case-studies/onoffdeals/): How I built OnOffDeals, a real estate deal analysis SaaS: React and FastAPI, a valuation engine for ARV, MAO and DSCR, Stripe billing and a Claude deal coach.
- [PowerSmith Case Study](https://sharmachaitanya945.com/case-studies/powersmith-operations-portal/): A solar sales rep portal for PowerSmith Energy: 15 screens for reps, teams and admins, a commission engine, affiliate referrals and GoHighLevel sync.
- [Gurukin Case Study](https://sharmachaitanya945.com/case-studies/gurukin/): Gurukin is a free, ad-free AI learning platform I built: Claude certification prep, JLPT N5 Japanese and a kids’ track, with AI-drafted, human-reviewed content.

## Writing

- [I built OnOffDeals so real-estate investors could stop guessing](https://medium.com/@sharmachaitanya945/i-built-onoffdeals-so-real-estate-investors-could-stop-guessing-bab72a6313f9): Why I built a real-estate deal-analysis SaaS that finds your next deal and proves it is one in seconds, instead of investors pulling numbers by hand.
- [LeadPilot: I built an AI CRM where leads score themselves in 48 hours on Zerops](https://medium.com/@sharmachaitanya945/leadpilot-i-built-an-ai-crm-where-leads-score-themselves-in-48-hours-on-zerops-subtitle-a-5a78318a36bd): Inbound leads pile up unqualified. For the Zerops Challenge I built LeadPilot, an AI lead-automation CRM where every lead scores itself the moment it arrives.
- [How Team Bug Trio Won Bharatiya Antariksh Hackathon 2025 (PS-10): Our Journey, Lessons and Advice](https://medium.com/@sharmachaitanya945/how-team-bug-trio-won-bharatiya-antariksh-hackathon-2025-ps-10-our-journey-lessons-and-advice-b05ff1a56c0b): Everything Team Bug Trio learned on the way to winning ISRO’s Bharatiya Antariksh Hackathon 2025, written for students preparing for BAH 2026.
- [I Bought a ₹23K Tablet That Beat “Flagship” Alternatives: Here’s the Truth](https://medium.com/@sharmachaitanya945/i-bought-a-23k-tablet-that-beat-flagship-alternatives-heres-the-truth-student-coder-51b314ebc755): Why the Motorola Pad 60 Pro beat newer “flagship” tablets for a student who codes, after months of real use.
- [LegalEase AI: Building a Semantic Legal Research Assistant Using MindsDB, Gemini and Ollama](https://medium.com/@sharmachaitanya945/legalease-ai-building-a-semantic-legal-research-assistant-using-mindsdb-gemini-and-ollama-c2a4bb69e8b4): How I built LegalEase AI, a full-stack semantic legal research assistant, for MindsDB Quest 019 using MindsDB, Gemini and Ollama.
- [Building CareerAgent: An AI-Powered Job Search Assistant with LangChain and Gemini](https://dev.to/sharmachaitanya945/building-careeragent-an-ai-powered-job-search-assistant-with-langchain-and-gemini-319i): An AI assistant that analyses your resume, finds matching jobs and guides your search, built with LangChain and Gemini.
- [OpenAI’s Latest Innovations: ChatGPT-4o and a Potential New Search Engine](https://medium.com/@sharmachaitanya945/openais-latest-innovations-chatgpt-4o-and-a-potential-new-search-engine-93d04d275917): A quick look at ChatGPT-4o, OpenAI’s multimodal upgrade across text, images and audio, and the hints of a new AI search engine.
- [Kickstart Your Machine Learning Career: Essential Skills and Top YouTube Tutorials](https://medium.com/@sharmachaitanya945/kickstart-your-machine-learning-career-essential-skills-and-top-youtube-tutorials-10fb44129b23): The essential skills for a machine-learning career, with hand-picked YouTube tutorials to learn each one.

## Optional

- [Full text of every page](https://sharmachaitanya945.com/llms-full.txt): the same pages as plain Markdown in one file
- [Portfolio homepage](https://sharmachaitanya945.com/): projects, experience, certifications and contact
- [Contact page](https://sharmachaitanya945.com/contact): email, booking link and contact form