HV Watermark

Hi, I'm Harsh Vansjaliya

Full-Stack Developer

Building High-Performance Web Applications

From pixel-perfect frontends to robust scalable systems, with 3+ years of engineering experience

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{
 "name": "Harsh Vansjaliya",
 "role": "Full-Stack Developer",
 "experience": "3+ Years",
 "status": "Active",
 "specialties": [
 "Scalable API Architectures",
 "High-Performance Frontends",
 "Database Optimization"
 ]
}

About Me

A snapshot of my software engineering philosophy, background, and core metrics

Harsh Vansjaliya

Harsh Vansjaliya

Based in Gujarat, India

Full StackFinTechAPIs
Download Resume

I am a high-impact Full-Stack Engineer with a proven track record of building scalable, low-latency web architectures. Specializing in the modern React/Next.js ecosystem and high-throughput Node.js/Python backends, I own the entire engineering lifecycle, from pixel-perfect, highly accessible user interfaces to robust, concurrent backend systems.

My experience is anchored in building financial technology products at AlgoAcharya, where I architected high-frequency trading dashboards and optimized GraphQL/REST APIs to handle real-time market data. Today, I focus on building resilient backend architectures, designing optimized database schemas (PostgreSQL, MongoDB), and leveraging caching layers and message queues (Redis, BullMQ) to deliver sub-millisecond execution times.

Primary Engineering Focus

•Building robust full-stack apps with Next.js & Node.js
•Designing scalable REST & GraphQL API architectures
•Optimizing data storage with PostgreSQL, MongoDB & Redis
•Implementing CI/CD and containerization using Docker

Core Driving Principles

Writing clean, maintainable code
Leveling up constantly
Shipping things that actually matter

Skills & Expertise

My technical capabilities organized by category - from core backend specialization to cloud architectures and frontend integrations.

Backend Development
Core Focus
2023 - Present

Building scalable backend systems, well-structured APIs, and production-ready service architectures.

Technologies & Concepts

Node.js
Express.js
FastAPI
REST APIs
GraphQL
PostgreSQL
MongoDB
Redis
BullMQ
Stripe
n8n Automation
JWT Authentication
Caching Strategies
API Design
Frontend Development
Core Focus
2022 - Present

Developing modern, responsive user interfaces and integrating complex backend APIs.

Technologies & Concepts

Next.js
React
TypeScript
JavaScript (ES6+)
Tailwind CSS
shadcn/ui
API Integration
Cloud & DevOps
Secondary
2023 - Present

Deploying, containerizing, and managing applications on cloud infrastructure.

Technologies & Concepts

AWS EC2
AWS S3
AWS IAM
Docker
Docker Compose
CI/CD
Linux
Vercel
Git
GitHub
Bitbucket
Postman
Database & System Concepts
Secondary
2023 - Present

Designing efficient data models and optimizing database performance.

Technologies & Concepts

Schema Design
Query Optimization
Indexing
Transactions
Normalization
Python & Market Data Analysis
Secondary
2023 - Present

Working with market data to analyze trends, visualize insights, and experiment with trading strategies.

Technologies & Concepts

Python
pandas
NumPy
Matplotlib
Seaborn
yfinance
Jupyter Notebooks
Data Analysis
Basic Strategy Backtesting
Languages
Secondary
2022 - Present

Programming languages used across backend, frontend, and automation projects.

Technologies & Concepts

TypeScript
JavaScript
Python
Java
SQL

Professional Experience

My journey in software development: building trading platforms and scalable web applications

Alite Projects logo
Software Developer
Full-time
Alite Projects
•
Vadodara, India
Dec 2025 - Present

Key Accomplishments & Responsibilities

  • Architect and implement end-to-end platform features, engineering high-throughput backend APIs in Node.js paired with Redis caching, and building sleek React/Next.js frontends.
  • Develop scalable web architectures using TypeScript, establishing a reusable component library, and optimizing client-side performance.
  • Design complex third-party API integrations, orchestrating automated workflows with n8n, and managing scalable data models in PostgreSQL and MongoDB.

Technologies Deployed

Next.jsReactTypeScriptNode.jsPostgreSQLRedisViteTailwind CSSMUIn8nMongoDB
Self Employed logo
Software Developer
Self-employed
Self Employed
•
Vadodara, India
May 2025 - Present

Key Accomplishments & Responsibilities

  • Architect independent high-performance applications using Node.js, FastAPI, MongoDB, Redis, and Docker.
  • Design modular RESTful architectures implementing Domain-Driven Design (DDD) and clean code methodologies.
  • Engineered Shortify, a distributed URL shortener utilizing custom SHA-256 base-62 hashing, achieving sub-millisecond redirect lookups via Redis caching.
  • Developing Tailor Track, a comprehensive SaaS platform optimizing workflow automation for client orders, precise measurements, and real-time inventory tracking.
  • Devote deep study to scalable system design, asynchronous message queues (BullMQ), containerization, and advanced performance profiling.

Technologies Deployed

Next.jsTypeScriptNode.jsFastAPIMongoDBRedisDocker
Algoacharya logo
Software Developer
Full-time
Algoacharya
•
Ahmedabad, India
Sept 2023 - May 2025

Key Accomplishments & Responsibilities

  • Co-engineered a high-frequency algorithmic trading platform for the Indian stock market, managing high-throughput real-time financial streams.
  • Crafted a performant user interface using Next.js, TypeScript, and Tailwind CSS, implementing dark mode support and custom reusable UI component libraries.
  • Designed and integrated unified GraphQL and REST API layers, successfully reducing client data-fetch latency by 40%.
  • Partnered with cross-functional product and design teams to deliver low-latency charting tools, trading terminals, and portfolio metrics.
  • Accelerated full-stack versatility by contributing robust database schemas in PostgreSQL and writing performant backend logic in Python/Django.

Technologies Deployed

Next.jsTypeScriptPythonDjangoPostgreSQLGraphQL
Gujarat Informatics Limited (GIL) logo
.NET Developer Intern
Internship
Gujarat Informatics Limited (GIL)
•
Gandhinagar, India
Mar 2023 - May 2023

Key Accomplishments & Responsibilities

  • Developed secure public-sector web applications leveraging the .NET Core framework and C#.
  • Optimized relational database schemas and queries in SQL Server, increasing data retrieval speed by 25%.
  • Implemented secure token-based authentication and designed RESTful endpoints to facilitate seamless data communication.

Technologies Deployed

.NET CoreSQL ServerREST APIC#

Featured Projects

A showcase of systems I have built, ranging from high-performance backend APIs and database designs to algorithmic stock market platforms.

APP.WINDOW
Shortify - URL Shortener
Nov 2025
BackendCompleted
A high-throughput URL shortening platform engineered to demonstrate advanced system design principles and scalable backend architecture. Features a collision-resistant custom hashing generator, scalable MongoDB persistence, and an optimized Redis caching hierarchy to achieve sub-millisecond redirect lookups.

Key Accomplishments

  • Hash-based short ID generation using SHA-256 + Base62 encoding
  • Three-tier caching architecture with Redis (7-day TTL)
  • Async database operations using Motor (MongoDB async driver)

Technologies Used

PythonFastAPIMongoDBRedisDocker
View Source
APP.WINDOW
Tailor Management System
Oct - Nov 2025
Full StackIn Progress
A modern full-stack SaaS platform designed for garment and tailor shop business automation. Integrates a rich, highly responsive Next.js frontend with a secure Express backend via type-safe Drizzle ORM, orchestrating customer measurements, order lifecycles, real-time inventory, and invoice generation.

Key Accomplishments

  • Customer order & measurement tracking
  • Real-time inventory management
  • Billing & invoice generation

Technologies Used

Next.jsReactNode.jsExpressPostgreSQLTypeScriptTailwind CSSJWTDockerVitestDrizzle ORM
Code
APP.WINDOW
Patient Management System
2025
BackendCompleted
A highly available, distributed healthcare operations system built on a modern Spring Boot microservices architecture. Implements enterprise integration patterns including an API Gateway with rate limiting, secure gRPC inter-service communication, and real-time Kafka event streaming for asynchronous healthcare analytics.

Key Accomplishments

  • 5-service microservices architecture
  • API Gateway with request routing & auth
  • gRPC inter-service communication

Technologies Used

JavaSpring BootMicroservicesgRPCKafkaPostgreSQLDockerJWT
Code
APP.WINDOW
Algorithmic Trading Platform
2023-2025
FinTechProfessional Project
A professional-grade algorithmic trading workstation tailored for the Indian equities market. Features real-time stock market data ingestion pipelines, automated strategy executions, detailed backtesting simulators, and multi-dimensional portfolio risk analytics.

Key Accomplishments

  • Real-time market data integration
  • Automated trading algorithm execution
  • Comprehensive backtesting system

Technologies Used

PythonDjangoPostgreSQLpandasNumPyyfinanceNext.jsGraphQL
APP.WINDOW
Hotel Reservation Platform
2022
Full-StackCompleted
A high-fidelity full-stack hospitality marketplace inspired by Airbnb. Powered by Next.js and Prisma, the platform includes complete session management, dynamic property listing grids, interactive geospatial map searching, and real-time booking reservation workflows.

Key Accomplishments

  • User authentication and authorization system
  • Property listing with image galleries
  • Advanced search and filtering options

Technologies Used

Next.jsTypeScriptTailwind CSSPrismaNextAuth.jsReact-LeafletCloudinary
Code

Get In Touch

Let's connect! I am always open to discussing new software engineering roles, system architectures, or collaborating on high-fidelity web projects.

Contact Information

Email Address
harshvansjaliya3@gmail.com

Best way to reach me

Current Location
Gujarat, India

Available for remote contracts

Typical Response
Within 24 hours

Usually much faster

Send Me a Message
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