BackendEngineer &AI/ML Developer
I build production-grade backends and AI-powered systems with Python, FastAPI, and LangChain. Former Google DSC Lead and Microsoft Student Ambassador, currently engineering fintech microservices and RAG pipelines at Arhamshare.
Engineering Intelligent Systems That Scale
As a Software Engineer specializing in Backend & AI with a solid grounding in Computer Science and Engineering from Gujarat Technological University (GTU), I build production-grade backends using Python, FastAPI, and microservices architecture.
My expertise spans RAG pipelines, LangChain, LLM integration and multi-database environments with PostgreSQL, MySQL, and MongoDB. Currently, I'm building fintech microservices, trading platforms, and AI-powered financial applications at Arhamshare.
Driven by a passion for AI and backend engineering, I'm committed to building intelligent, scalable systems that solve real-world problems — from real-time data pipelines to GenAI-powered regulatory compliance tools.
Python & FastAPI
Microservices, REST APIs, async backends
GenAI & RAG
LangChain, Qdrant, Groq LLaMA, embeddings
Cloud & DevOps
Docker, NGINX, GCP, Azure, CI/CD
Community Leader
508+ members as Google DSC Lead
Services & Expertise
From backend architecture to AI integration, I build scalable systems end-to-end.
Backend Engineering
Building production-grade microservices with Python and FastAPI — async APIs, WebSocket streams, JWT/OAuth security, and NGINX reverse proxy deployments.
Generative AI & RAG
Designing RAG pipelines with LangChain, vector databases (Qdrant), and LLM integration (Groq LLaMA). Citation-enforced grounding with RAGAS evaluation benchmarks.
Fintech Solutions
Developing secure financial backends with real-time data streaming, market analytics, portfolio tracking, Account Aggregator integration, and regulatory compliance.
API & Data Pipelines
Designing REST/WebSocket APIs, real-time data pipelines, Selenium scrapers, and CronJob-based data sync systems with Redis caching for high-frequency workflows.
Cloud & DevOps
Containerized deployments with Docker, NGINX load balancing, GCP/Azure cloud services, GitHub Actions CI/CD, and production monitoring infrastructure.
Database Architecture
Multi-database design spanning PostgreSQL, MySQL, and MongoDB for structured financial data, high-frequency transactions, and vector storage for AI applications.
ComplianceIQ — Regulatory RAG System
An intelligent RBI/SEBI regulatory compliance system powered by RAG pipelines. Ingests regulatory PDFs, performs category-filtered vector retrieval, and generates citation-grounded answers using Groq LLaMA for the Indian fintech ecosystem.
Where I've Worked
A journey through tech leadership, innovation, and building products that impact thousands of users.
- Built FastAPI microservices for trading, mutual fund, and Account Aggregator data workflows; configured NGINX with SSL termination and load balancing serving 1k–10k users.
- Integrated Finvu SDK with RBI Account Aggregator framework, implementing end-to-end FIP/FIU consent flows; secured 8+ backend services with JWT/OAuth 2.0.
- Developed full Mutual Fund platform backend — NAV tracking, scheme discovery, portfolio aggregation; built Selenium scrapers + CronJobs for auto-sync from external sources.
- Designed MySQL, PostgreSQL, and MongoDB schemas for financial data and high-frequency transactional workflows; prototyped LLM-based financial Q&A for user-facing insights.
- Reduced production defects by 30% across 40+ components via unit/regression testing; contributed to Agile sprints, code reviews, and API architecture documentation.
- Collaborated with senior developers to enhance UI/UX in Flutter, boosting user engagement by 15%.
- Optimized code to reduce app crashes by 25%; contributed to 3 major Agile sprints with 100% on-time delivery.
- Created a browser-based Face Recognition attendance system using Django, Python, and OpenCV with 7% speed improvement.
- Built the system to capture faces and store attendance data with multi-face simultaneous detection.
- Founded GDSC on campus — led 17 students, organized 10+ events, achieved 191.8% growth with 508 official members.
- Cultivated 5+ partnerships with organizations and hosted 3+ industry speaker sessions for 120+ club members.
Selected Work
Here are some of my notable projects showcasing technical depth and creative problem-solving.
ComplianceIQ — RBI/SEBI Regulatory RAG System
Ingested 20+ RBI/SEBI PDFs into Qdrant Cloud with 500-token overlapping chunks and metadata indexing. Built LangChain retrieval pipeline with category filters and deployed Groq LLaMA-3.3-70B with citation-enforced grounding. Benchmarked with RAGAS achieving strong faithfulness scores.
Trado — Trading Platform Backend
Modular FastAPI microservices for equity trading, portfolio tracking, IPO listings, screeners, and FII/DII data. WebSocket streams for live market data, Redis caching, and real-time P&L calculation engine.
Mutual Fund Platform — Backend
Complete MF platform backend covering NAV tracking, scheme discovery, and portfolio aggregation. Built Selenium scrapers + CronJobs for auto-syncing fund data from external sources.
Account Aggregator Integration
Integrated Finvu SDK with RBI Account Aggregator framework implementing end-to-end FIP/FIU consent flows per ReBIT API specs. JWT/OAuth 2.0 security across 8+ services.
FaceTrack — Recognition System
Django app using OpenCV for automatic face detection and attendance marking. Multi-face support with 7% speed improvement. Built during Microsoft Engage 2022.
Instagram Media Scraper
Scraping tool for reels, stories, highlights, captions, and view counts. Uses Selenium & Pandas for data extraction and processing.
YouTube Downloader
Lightweight CLI tool for downloading YouTube videos. Built with pytube — clean, minimal dependencies.
E-Commerce + FAQ Bot
Prototype store with integrated AI FAQ bot, product catalog, and cart. Deployed on Azure with cloud services.
Backend Systems Powering Live Apps
Backend microservices and APIs I've engineered that power production apps on the Play Store and App Store, serving real users every day.
LIVETrado by Arham
TradingCutting-edge trading & investment platform
LIVEArhamShare: MF
FinanceData-driven mutual fund investing
Technical Expertise
My technical toolkit built through years of hands-on development and continuous learning.
Skills
GitHub Contributions
@Jay3Chauhan →Credentials & Badges
Professional certifications validating continuous learning and technical expertise.
What People Say
Feedback from colleagues and collaborators I've had the pleasure of working with.
Jay is an exceptional backend engineer who brings both technical excellence and creative problem-solving to every project. His Python and FastAPI skills are outstanding — he consistently architects scalable systems that exceed expectations.
As GDSC Lead, Jay demonstrated remarkable leadership and organizational skills. He grew our community from scratch to 500+ members and created an inclusive, learning-focused environment for all.
Working with Jay on the Microsoft Engage project was a great experience. His ability to quickly grasp complex concepts like face recognition with OpenCV and translate them into working Python solutions is impressive.
Jay's backend microservices architecture for our trading platform was instrumental. His work on WebSocket streams, Redis caching, and the Account Aggregator integration showed deep systems thinking.
Go Ahead, Play Around
This isn't just a portfolio — drag the shapes.
Let's Build Something Together
I'm always interested in hearing about new projects and opportunities.
Have an idea?
Let's make it real.
Whether you need a mobile app, want to collaborate, or just want to say hello — I'd love to hear from you.
Send a Message