Backend Development
2023 - PresentBuilding scalable backend systems, well-structured APIs, and production-ready service architectures.
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Hi, I'm Harsh Vansjaliya
Full-Stack Developer
Building High-Performance Web Applications
I build products end to end: React/Next.js frontends, Node.js APIs, and the PostgreSQL schemas underneath, with 3+ years shipping production code
Full-Stack DeveloperIndia
Core Architecture & Stack
Backend & Systems
PrimaryNode.jsExpressFastAPIDjangoBullMQRedis
Frontend & UI
SpecializationNext.jsReactTypeScriptTailwind CSSZustand
Data & Storage
Data LayerPostgreSQLMongoDBPrismaSchema Design
FinTech, Trading Terminals & Web Applications
01 — About
About Me
Engineering background, architectural principles, and what I build
Harsh Vansjaliya
Full-Stack Developer
India · Remote & Hybrid
Full Lifecycle Ownership
Database Schemas · Resilient APIs · Responsive UI
Node.jsPostgreSQLNext.jsTypeScriptPythonRedisFastAPIDocker
Bachelor of Engineering in Computer Engineering
SVIT Vasad (GTU) · 2019 - 2023
I'm a full-stack developer with 3+ years of experience building web applications end-to-end, from React/Next.js frontends to Node.js and Python backends. I like owning a feature from database schema to shipped UI, and I care about the unglamorous parts (error handling, caching, migrations) as much as the visible ones.
My journey started in fintech building trading dashboards and APIs for real-time market data - that's where I got serious about performance and API design. Over the years, I've engineered high-throughput Node.js services, Redis caching pipelines, and clean PostgreSQL/MongoDB schemas. I gravitate toward backend problems - job queues, caching, data modeling - while shipping intuitive, responsive frontend interfaces.
Core Engineering Domains
Backend Architecture & APIs
Engineering resilient, high-throughput backend services in Node.js, Express, FastAPI, and Django. Implementing BullMQ task queues, Redis caching, and robust REST & GraphQL endpoints.
Node.jsFastAPIRedisBullMQREST/GraphQL
Frontend Engineering
Building responsive, type-safe web applications using Next.js (App Router), React, TypeScript, and Tailwind CSS with custom state management and accessible design systems.
Next.jsReactTypeScriptTailwind CSSZustand
Data Systems & Infrastructure
Designing clean relational and document schemas in PostgreSQL and MongoDB, optimizing queries and indexes, and deploying containerized microservices with Docker.
PostgreSQLMongoDBPrismaDockerTurborepo
End-to-End Type SafetySchema-First DesignSub-millisecond CachingResilient Async WorkflowsClean Domain Boundaries
02 — Skills
Skills & Expertise
My technical capabilities organized by category - from core backend specialization to cloud architectures and frontend integrations. Tap a technology to see it in action.
Frontend Development
2022 - PresentDeveloping modern, responsive user interfaces and integrating complex backend APIs.
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Cloud & DevOps
2023 - PresentDeploying, containerizing, and managing applications on cloud infrastructure.
AWS EC2 · AWS S3 · AWS IAM · · · CI/CD · · Vercel · · · Bitbucket ·
Automation & Integrations
2025 - PresentAutomating business workflows and connecting products with third-party tools and CRMs.
· · · Third-party API Integrations
Database & System Concepts
2023 - PresentDesigning efficient data models and optimizing database performance.
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Python & Market Data Analysis
2023 - PresentWorking with market data to analyze trends, visualize insights, and experiment with trading strategies.
· pandas · NumPy · Matplotlib · Seaborn · yfinance · Jupyter Notebooks · Data Analysis · Basic Strategy Backtesting
Languages
2022 - PresentProgramming languages used across backend, frontend, and automation projects.
· · · Java ·
03 — Experience
Professional Experience
Where I've worked, and what I built while I was there
Software Developer
Alite Projects
•Vadodara, India
Full-time
Dec 2025 - Present
Design complex third-party API integrations, orchestrating automated workflows with n8n, and managing scalable data models in PostgreSQL and MongoDB.
- 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.
Frontend: Next.js, React, TypeScript, Vite, Tailwind CSS, MUIBackend: Node.js, n8n, BullMQData: PostgreSQL, Redis, MongoDBInfra: DockerOther: Zapier, HubSpot
Software Developer
Self Employed
•Remote · India
Self-employed
May 2025 - Present
Built Shortify, a URL shortener with a custom hash-based short-ID generator and a multi-layer Redis cache.
- Architect independent full-stack applications end-to-end, from API design through deployment, using Node.js, FastAPI, MongoDB, Redis, and Docker.
- Apply Domain-Driven Design and clean architecture principles to keep growing codebases maintainable.
- Building Tailor Track, a SaaS platform for tailor shops to manage orders, measurements, and inventory.
- Study system design, async message queues (BullMQ), and performance profiling in my own time.
Frontend: Next.js, TypeScriptBackend: Node.js, FastAPIData: MongoDB, RedisInfra: Docker
Related work: Shortify - URL Shortener, Tailor Track
Software Developer
AlgoAcharya
•Ahmedabad, India
Full-time
Sept 2023 - May 2025
Designed and integrated unified GraphQL and REST API layers, reducing client data-fetch latency by 40%.
- 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.
- Partnered with cross-functional product and design teams to deliver low-latency charting tools, trading terminals, and portfolio metrics.
- Extended into full-stack work, designing PostgreSQL database schemas and writing backend logic in Python/Django.
Frontend: Next.js, TypeScriptBackend: Python, Django, GraphQLData: PostgreSQL
Related work: Algorithmic Trading Platform
.NET Developer Intern
Gujarat Informatics Limited (GIL)
•Gandhinagar, India
Internship
Mar 2023 - May 2023
Optimized relational database schemas and queries in SQL Server, increasing data retrieval speed by 25%.
- Developed secure public-sector web applications using the .NET Core framework and C#.
- Implemented secure token-based authentication and designed RESTful endpoints to facilitate seamless data communication.
Backend: .NET Core, REST API, C#Data: SQL Server
04 — Projects
Featured Projects
A few of the systems I've built: full-stack products, backend APIs, and an algorithmic trading platform for the Indian stock market.
Self-employed project
Oct 2025 - Present
Shop management software for a family member's tailoring business: a web app, a mobile app and an API in one monorepo.
- Accounts can belong to several shops, as owner or staff
- One Zod validation layer shared by web, mobile and API
- 260+ API tests and a Jenkins pipeline
Frontend: Next.js, React, TypeScript, Tailwind CSS, shadcn/ui, TanStack Query, ZustandMobile: Expo, React NativeBackend: Express, Node.js, REST APIs, ZodData: PostgreSQL, Prisma, RedisInfra: Turborepo, DockerOther: Vitest, Jenkins, SonarQube
In development · not yet public
Read case studyEngineered while at AlgoAcharya
Sep 2023 - May 2025
The trading frontend for an Indian equities platform: dashboards, portfolios and strategy backtesting.
- Trading dashboard and portfolio views
- Strategy and backtesting screens
- GraphQL-driven data layer
Frontend: Next.js, TypeScript, React, Tailwind CSS, shadcn/ui, Axios, ZustandBackend: GraphQL, Django, Python, Celery, REST APIsData: PostgreSQLInfra: Docker
Closed-source · professional project
Read case studySelf-employed project
Nov 2025 - May 2026
A URL shortener where the same long URL always gets the same short link.
- 7-character IDs from SHA-256 and Base62, with collisions re-hashed
- Redis cache in front of MongoDB, 301 redirects
- Unique index on the short ID enforced in MongoDB
Backend: Python, FastAPI, REST APIsData: MongoDB, RedisInfra: Docker, Docker Compose
May - Jun 2023
A full-stack hospitality marketplace inspired by Airbnb, built with Next.js and Prisma. Covers multi-provider auth, host listings with map-based search, and a full booking flow from browsing to reservation.
- Multi-provider authentication - GitHub, Google, and email/password
- Host workflow for creating listings with Cloudinary image uploads
Frontend: Next.js, React, TypeScript, Tailwind CSS, React-Leaflet, ZustandBackend: Node.js, NextAuth.js, CloudinaryData: Prisma, MongoDB
Aug - Sep 2023
A full-stack music streaming app inspired by Spotify, built with Next.js and Supabase. Handles song uploads, playback, liked songs, and Stripe-powered premium subscriptions.
Frontend: Next.js, React, TypeScript, Tailwind CSS, Zustand · Backend: Node.js, Supabase, Stripe · Data: PostgreSQL
May - Jul 2023
A real-time chat app built with Next.js, Prisma, and Pusher to get hands-on with real-time architecture beyond request/response CRUD. Supports one-on-one and group conversations, image messages, and live read receipts.
Frontend: Next.js, React, TypeScript, Tailwind CSS · Backend: Node.js, NextAuth.js, Pusher, Cloudinary · Data: MongoDB, Prisma
05 — Contact
Get In Touch
Not on the job market right now, but always up for a good systems-design conversation or the right project. Reach out.
Contact Information
Email Address
harshvansjaliya3@gmail.com
Best way to reach me
Current Location
India
Available for remote contracts
Typical Response
Within 24 hours
Usually much faster
Send Me a Message
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