Lakshay Lalia lakshaylalia

name:        Lakshay Lalia
role:        Software Engineer
education:   B.Tech CSE (Final Year) — NIT Hamirpur
experience:  Full Stack Intern @ HelioExpect
             React · React Native · Python · AWS Lambda
core:        Java · Spring Boot · Redis · Node.js · TypeScript
apps:        React Native · Expo
data:        MongoDB · MySQL · Redis · DataStax Astra DB
focus:       RAG / AI products, real-time systems, LLD & system design
status:      Open to Software Engineering roles 🚀

🔭 Currently building	🌱 Currently sharpening	💬 Ask me about
RAG & vector-search apps	Low-level design, Spring Boot, DSA	React, Node, AWS Lambda, real-time chat

_LANGUAGES

_{BACKEND & FRAMEWORKS}

_FRONTEND

_{APP DEVELOPMENT}

_{DATABASES & CACHING}

_{CLOUD, DEVOPS & TOOLS}

_{AI / DATA}

📄 IntelliDocs — RAG Chatbot

Full-stack MERN platform to chat with your documents using Retrieval-Augmented Generation.

🧠 LangChain + Gemini 2.0 Flash with text-embedding-004 embeddings
🔎 Vector retrieval via FAISS and MongoDB Atlas Vector Search
🛡️ 24 REST endpoints with three tiered rate limiters, Redis-backed
☁️ Monorepo deploy — Render (API) + Vercel (client)

→ View repo

🗄️ Astra DB — Vector & NoSQL Project

Project built on DataStax Astra DB, a serverless Cassandra-based database with built-in vector search.

⚡ Serverless, horizontally scalable data layer
🧬 Vector search for semantic / AI retrieval workloads
🔌 Integrated through the Astra DB API

→ View repo

💬 Chirp — Real-time Chat

Full-stack real-time messaging app with live presence and group conversations.

🔌 Socket.io for instant delivery and online-user tracking
👥 One-to-one & group chats with avatar uploads (Multer + Cloudinary)
⚛️ React + React Query v5 on the client, Express + MongoDB on the server
🧱 Clean backend patterns: asyncHandler, ApiError, ApiResponse

→ View repo

🧩 Stack Overflow — Low-Level Design

Java clone built for LLD interview prep, with a layered architecture.

🏗️ Models → Repositories → Services → Controllers
🧠 Strategy (sorting), Observer (reputation events), Singleton repositories
🔒 Thread-safe storage with ConcurrentHashMap
🏅 Tag search, pagination, badge tiers, custom exception hierarchy

→ View repo

☀️ Solar Data Pipeline — AWS Lambda

Serverless pipeline built during my internship at HelioExpect.

🔐 Authenticates against the Growatt API and pulls real-time plant data
📤 Pushes data to an external DB API with exponential-backoff retries
⚙️ Lightweight, single-file Lambda design

🔋 BESS Monitoring Dashboard

Battery energy storage dashboard with live time-series power charts.

📈 React + TypeScript, state with Redux Toolkit (slices + thunks)
🔌 Container-level battery data and custom date-range filtering
📱 Also shipped UI work on a React Native / Expo solar operations app

🌐 Portfolio — lakshaylalia.in

A minimal, typographic personal site: React + TypeScript + Tailwind CSS + Framer Motion, with a cycling typewriter hero, scroll-aware navigation and a clean mobile layout.

→ Visit live

2023 ─── Joined NIT Hamirpur · B.Tech Computer Science
   │
   ├──  Built full-stack projects: Chirp, IntelliDocs, Portfolio
   │
   ├──  Sharpened Java, OOP, design patterns & LLD
   │
2026 ─── Full Stack Developer Intern @ HelioExpect
   │     React · React Native · Python · AWS Lambda
   │
   └──  Final year → targeting Software Engineer roles 🎯

_{SKILL SNAPSHOT}

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Lakshay Lalia lakshaylalia

Achievements

Achievements

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📄 IntelliDocs — RAG Chatbot

🗄️ Astra DB — Vector & NoSQL Project

💬 Chirp — Real-time Chat

🧩 Stack Overflow — Low-Level Design

☀️ Solar Data Pipeline — AWS Lambda

🔋 BESS Monitoring Dashboard

🌐 Portfolio — lakshaylalia.in

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