Full Stack Developer | AI/LLM Engineer | Building Production SaaS Applications

Full Stack Developer with 4+ years of experience building and shipping production-ready SaaS applications serving 16,000+ users. I specialize in modern web technologies and have a proven track record of taking products from concept to deployment with 99.9% uptime.

• 🔭 Currently working on: AI-powered SaaS products (Semantic Pen, VerifyForge, Real Jobs Platform)
• 💼 Looking for: Senior Full Stack Developer / AI Engineer roles
• 🌱 Expert in: React, Next.js 15, TypeScript, Node.js, Python (Django/FastAPI), PostgreSQL, AWS
• 🤖 AI/LLM Experience: OpenAI GPT-4, Claude, LangChain, RAG systems, Voice AI (Google TTS, ElevenLabs)
• 🎯 Passionate about: Scalable architecture, clean code, AI agents with minimal hallucination
• 📊 Shipped: 8+ live production applications from scratch
• 🏥 Recent: HIPAA-compliant Medical Imaging Platform with Django + Next.js + AI

Full-stack medical imaging platform with Django REST API, Next.js 16 frontend, and AI-powered document processing.

• Tech: Django, Django REST Framework, Next.js 16, React 19, PostgreSQL, Celery, Redis, OpenAI, Docker
• Features: HIPAA compliance, AI document processing, 85% query optimization (1.2s → 180ms), async workers
• Testing: 85% code coverage with pytest, Jest, Cypress
• Performance: 25+ composite indexes, sub-50ms query latency
• 🔗 Full source code available on GitHub

AI-powered content generation platform with RAG-based architecture serving 16,000+ users with 99.9% uptime.

• Tech: Next.js, Node.js, Python, FastAPI, Django, PostgreSQL, Redis, AWS, OpenAI, Claude
• Features: RAG system, vector embeddings, multi-tenant architecture, Celery background workers
• Scale: 100K+ monthly requests, sub-50ms query latency, multi-tenant data isolation
• AI: LLM integrations (GPT-4, Claude, Gemini), structured outputs, minimal hallucination

Production-ready email validation API with 99%+ accuracy and real-time SMTP verification under 2 seconds.

• Tech: Next.js 15, TypeScript, tRPC, PostgreSQL, Redis, Drizzle ORM, BullMQ, Python/FastAPI
• Features: Hybrid validation, disposable detection, subscription management, comprehensive dashboard
• Performance: Sub-500ms response times, 50K+ monthly validations, 99.5% uptime

Remote job board connecting global job seekers with 5,000+ active listings from leading companies.

• Tech: Next.js 15, TypeScript, tRPC, PostgreSQL, Better Auth, AWS SES, BullMQ, Python
• Features: Advanced filtering, real-time aggregation (10K+ jobs/day), company profiles, job alerts
• Architecture: Distributed task processing with Celery + BullMQ, Docker deployment, 14+ database schemas

Platform curating 988+ open-source projects for indie hackers and makers with community voting.

• Tech: Next.js 15, TypeScript, tRPC, PostgreSQL, Redis, Dodo Payments, Docker
• Features: Product showcases, community voting, payment integration, Docker deployment

• Semantic Interlinker - BERT-based SEO tool for internal linking discovery
• PAA Scraper - Google "People Also Ask" extractor with Flask API
• WordPress Article Uploader - NLP-based content automation

• ✅ Shipped 8+ production SaaS applications serving 16,000+ users
• ✅ Maintained 99.9% uptime on AI platform with 100K+ monthly requests
• ✅ Optimized PostgreSQL queries achieving 85% performance improvement (1.2s → 180ms)
• ✅ Built email validation API with 99%+ accuracy and sub-2s response times
• ✅ Developed job platform aggregating 5,000+ listings with real-time processing

• ✅ Built AI agents with minimal hallucination using structured outputs and JSON schemas
• ✅ Implemented RAG systems with vector embeddings and semantic search
• ✅ Integrated Voice AI (Google Cloud TTS, ElevenLabs) for real-time audio processing
• ✅ Achieved 85% code coverage with comprehensive testing (pytest, Jest, Cypress)
• ✅ Deployed multi-tenant architectures with proper data isolation and scalability

• ✅ Led development teams using Agile/Scrum methodologies
• ✅ Built microservices architectures with Docker and Kubernetes
• ✅ Established CI/CD pipelines with GitHub Actions for automated deployment
• ✅ Published 4 Chrome extensions on Chrome Web Store
• ✅ Contributed to open-source with production-grade Python tools

• Full Stack Developer (Contract) - Building scalable web applications (Jan 2024 - Present)
• Lead Engineer - Semantic Pen AI Platform, 16K+ users (Jan 2023 - Dec 2023)
• Senior Full Stack Developer - Medical Imaging Platform, HIPAA-compliant (Mar 2024 - Aug 2024)
• Co-Founder / CTO - Degions SaaS Tools (Nov 2018 - Feb 2023)

Tech Expertise:

• Frontend: React (4+ years), Next.js (4+ years), TypeScript, TailwindCSS
• Backend: Python (6+ years), Django (4+ years), FastAPI (4+ years), Node.js (4+ years)
• Databases: PostgreSQL (6+ years), Redis, MongoDB, MySQL
• AI/LLM: OpenAI GPT-4, Claude, LangChain, RAG systems, Voice AI (3+ years)
• Cloud: AWS (EC2, Lambda, S3, RDS, CloudWatch), Docker, Kubernetes
• Testing: pytest, Jest, Cypress (85%+ coverage)

Bachelor of Technology (B.Tech), Computer Science THDC-IHET | 2016

• 🌐 Portfolio: pushkarkathayat.com
• 💼 LinkedIn: linkedin.com/in/pushkarsingh32
• 📧 Email: contact@pushkarkathayat.com
• 🐙 GitHub: You're already here! 😊

💡 Open to opportunities - Actively seeking Senior Full Stack Developer and AI Engineer roles. Feel free to reach out!

⭐️ From pushkarsingh32