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piyush1856/README.md

Hi 👋, I'm Piyush Tyagi

Backend & AI Platform Engineer | GenAI | Multi-Agent Systems | Python & Java 🚀


🚀 About Me

I'm a Backend & AI Platform Engineer building production-grade backend systems and AI platforms across B2B commerce, SaaS, and developer tools.

  • 🤖 Currently building WizPilot, an agentic AI assistant for B2B commerce, backed by WizCommerce's shared Almanac AI platform.

  • 🧠 Working on multi-agent systems, LLM infrastructure, MCP, RAG, tool calling, AI guardrails, and agent orchestration using Python, LangGraph, LangChain, and FastAPI.

  • ⚙️ Built an MCP platform with 200+ enterprise tools, multi-tenant agent execution, dynamic tool discovery, and tool-schema compression reducing LLM token overhead by ~90%.

  • 📊 Built production RAG and NL-to-SQL systems using Qdrant, OpenAI embeddings, Voyage reranking, Elasticsearch, and BigQuery.

  • 🚀 Strong backend foundation in distributed systems, microservices, API optimization, databases, system design, and performance engineering.

  • 🏓 Represented state-level U16 in table tennis — discipline and competitiveness fuel my engineering journey.


🛠️ Tech Stack

💻 Programming Languages

Python Java JavaScript SQL

🤖 AI & LLM

OpenAI Anthropic LangChain LangGraph RAG MCP LiteLLM Qdrant Vector DB

⚙️ Backend & Frameworks

FastAPI Spring Boot Hibernate REST API Microservices

🗄️ Databases & Messaging

PostgreSQL MySQL Redis Elasticsearch RabbitMQ Kafka

☁️ Cloud & DevOps

AWS GCP Docker Kubernetes GitHub Actions

📊 Observability & AI Engineering

LangSmith Prometheus Grafana Sentry


💼 Experience

🚀 Software Development Engineer I — GenAI

WizCommerce (Oritur Technologies Pvt Ltd)
Sep 2025 — Present | Bengaluru, India

  • Co-architected Almanac, WizCommerce's shared AI platform powering WizPilot, WizStudio, Ella, and Workflow Engine.
  • Built WizPilot, an agentic AI assistant integrating WizOrder with CRM, catalog, cart, analytics, and order management for natural-language B2B workflows.
  • Designed a multi-tenant, database-configured agent execution layer with per-tenant graph caching, PostgreSQL conversation state, and dynamic MCP/subagent registration.
  • Built an MCP platform exposing 200+ enterprise tools with tenant-aware routing, validation, guardrails, and secure execution.
  • Implemented dynamic MCP tool compression, reducing LLM schema token overhead by ~90%.
  • Built multi-agent orchestration using LangGraph and LangChain, with domain-specialist agents and structured invocation APIs.
  • Implemented multi-provider LLM routing through LiteLLM across OpenAI, Anthropic, and Google models.
  • Built production RAG NL-to-SQL analytics pipelines using OpenAI embeddings, Qdrant, Voyage reranking, Elasticsearch, and BigQuery.
  • Built a tenant-scoped Knowledge Base with hybrid BM25 + dense retrieval and RRF.
  • Implemented SSE streaming, conversation memory, progressive-disclosure agent skills, HITL controls, and AI guardrails.
  • Developed high-performance FastAPI microservices, reducing critical API latency by 80%, system errors by 32%, and increasing throughput by 35%.
  • Built a parallelized migration pipeline processing 1M+ records at 1,000+ docs/sec between PostgreSQL and Elasticsearch.

Tech: Python, FastAPI, LangGraph, LangChain, MCP, LiteLLM, PostgreSQL, Qdrant, Elasticsearch, BigQuery, Redis, AWS, Docker, Kubernetes


🤖 Software Development Engineer I — GenAI

Fynd (Shopsense Retail Technologies Ltd)
Feb 2025 — Aug 2025 | Mumbai, India

  • Built backend services for Fynix AI, an AI-powered coding assistant supporting IntelliJ and VS Code.
  • Improved codebase indexing by 90%+ through embedding optimization and vector database tuning.
  • Designed modular ETL and ingestion pipelines for GitHub, GitLab, Azure DevOps, Quip, Google Docs, and BigQuery.
  • Engineered large-scale ingestion pipelines for Stack Overflow and public GitHub datasets.
  • Built RAG workflows and LLM-powered features using LangChain, LangGraph, OpenAI, and Claude.

Tech: Python, Java, Kotlin, LangChain, LangGraph, OpenAI, Claude, Vector Databases


💡 Backend Developer — Founding Team

Growder Technovations & Ompax Lifestyle Pvt. Ltd.
Mar 2023 — May 2024 | Surat, India

  • Engineered backend architectures across two early-stage B2B platforms.
  • Designed scalable Order Management and User Management systems with JWT authentication and RBAC.
  • Improved backend throughput by 70–80% through performance optimization and architectural improvements.
  • Built reusable integrations with Shiprocket, Shopify, payment gateways, logistics, and third-party services.
  • Automated warehouse, logistics, and inventory workflows using event-driven microservices.

Tech: Java, Spring Boot, PostgreSQL, MySQL, Redis, RabbitMQ, Elasticsearch, AWS


🧠 Featured Projects

🤖 WizPilot

Agentic AI assistant for B2B commerce built on WizCommerce's shared Almanac AI platform.

Highlights:

  • Multi-agent orchestration
  • MCP with 200+ enterprise tools
  • Multi-tenant agent execution
  • RAG & NL-to-SQL
  • Qdrant + Elasticsearch
  • LiteLLM multi-provider routing
  • SSE streaming
  • Conversation memory
  • AI guardrails & HITL
  • Structured agent invocation

🧩 Almanac AI Platform

Shared AI infrastructure powering multiple WizCommerce products.

Designed to provide reusable:

  • Agent orchestration
  • LLM infrastructure
  • MCP tool execution
  • Tool discovery & compression
  • Multi-tenant isolation
  • Agent memory
  • RAG pipelines
  • Structured AI outputs
  • Observability & evaluations

🧑‍💻 Fynix AI

AI-powered coding assistant with IDE integrations.

Built backend services supporting:

  • Codebase indexing
  • Embeddings
  • Vector search
  • RAG workflows
  • GitHub / GitLab ingestion
  • Stack Overflow datasets
  • LLM-powered code assistance

📈 Engineering Highlights

  • 80% reduction in critical API latency
  • 📉 32% reduction in backend errors
  • 🚀 35% increase in system throughput
  • 🧠 ~90% reduction in LLM tool-schema token overhead
  • 🔧 200+ enterprise AI tools through MCP
  • 📦 1M+ records migrated at 1,000+ docs/sec
  • 💾 70% reduction in repetitive database reads
  • 🔍 90%+ improvement in codebase indexing at Fynix AI
  • 🏗️ Multiple products built from 0 → 1

🎓 Education

🎓 Master of Computer Applications — Machine Learning & Artificial Intelligence
Amity University, Noida | 2025

🎓 Data Science & Machine Learning — Scaler DSML
2025

🎓 Full Stack Web Development — Masai School
Bengaluru | 2023

🎓 Bachelor of Business Administration — BBA
Birla Institute of Technology, Mesra | 2020


🏆 Achievements

  • 🧠 Solved 300+ DSA problems across competitive programming platforms
  • 🚀 Built and scaled multiple 0 → 1 products
  • 🤖 Production experience with Agentic AI, LLMs, RAG, MCP, and Multi-Agent Systems
  • ⚙️ Strong foundation in Distributed Systems, System Design, LLD, HLD, and API Design
  • 🏓 Represented state-level U16 in table tennis

📫 Connect With Me


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