28.4595° N77.0266° E

Freelance full stack developer · India

HARSHKUMAR

Senior full stack developer in Gurugram, India. I help businesses build Next.js websites, SaaS products and automation tools. Available for freelance projects and remote collaborations worldwide.

Start a project Selected work

AVAILABLE WORLDWIDEEST. 2023

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ENGINEERING × EXPERIENCE

I don't just
build websites.

From architecture to animation, every detail is designed to move the product—and the business—forward.

I build
strong systems.

Scalable SaaS platforms, real-time systems, and intelligent automation. Built for what comes next.

I build
impact.

Product thinking, engineering depth, and delivery leadership. Ambitious ideas, brought into production.

10+PRODUCT MODULES

99.9%JOB RELIABILITY

45%FASTER EXPERIENCE

FULL STACK ENGINEERING✳IMMERSIVE WEB✳SAAS ARCHITECTURE✳AI AUTOMATION✳REAL-TIME SYSTEMS✳FULL STACK ENGINEERING✳IMMERSIVE WEB✳SAAS ARCHITECTURE✳

01 / EXPERTISE

Strategy in the front.
Strong systems underneath.

I combine product thinking, engineering depth, and delivery leadership to move ambitious ideas into production.

SaaS Architecture

Scalable modules, multi-tenant products, and production-ready platform foundations.

System designMulti-tenantScale

Technical Leadership

Planning, code reviews, mentoring, and delivery ownership across a four-person team.

Team leadMentoringDelivery

Full Stack Engineering

Fast, accessible products across React, Next.js, Node.js, APIs, and databases.

Next.jsNode.jsReact

Real-time Systems

Responsive chat, notifications, WebSocket flows, and concurrent user experiences.

Socket.ioWebSocketsEvents

Client Partnership

Clear ownership from discovery and scoping through launch and long-term support.

ScopingMilestonesSupport

Performance

Faster APIs, sharper queries, optimized rendering, and reliable background processing.

PostgreSQLSSR / ISRBullMQ

02 / SELECTED WORK

Built to solve.
Designed to scale.

Two focused products combining dependable architecture with simple, useful user experiences.

01 AI workflow

INTERFACE CONCEPT / 01

● ● ●trend2saas↗

YOUR NEXT BIG IDEA

Find the signal.
Build what's next.

AI signalsSaaS opportunities ↗

AI-powered trend analysis platform

Trend2SaaS

Next.jsPythonRedisBullMQ

Transforms live trend signals into structured SaaS opportunities—complete with problem, audience, monetization, and why-now insight.

↗99.9% reliable asynchronous analysis workflow
↗One-click structured PDF report generation
↗Architecture built for real-time AI expansion

02 Product UX

INTERFACE CONCEPT / 02

● ● ●claritools↗

LESS GUESSWORK. MORE CLARITY.

Everyday tools.
Clearer decisions.

Find your next tool ⌕

↗Finance✳Career⌘Technology

Calculator and practical guide platform

Claritools

Next.jsSearch UXResponsive UISEO

A search-first public product that helps users discover useful finance, career, and technology tools in fewer steps.

↗Keyboard-friendly discovery experience
↗Useful tools reachable in fewer than three clicks
↗Fast, accessible, production-ready frontend

03 / EXPERIENCE

Leading from
idea to impact.

Hands-on engineering leadership with ownership across product architecture, team delivery, and global client relationships.

Freelance projects, senior engineering
and technical lead roles

MAY 2023 — PRESENTGURGAON · INDIA · REMOTE

Brandeducer Digital Solutions

Full Stack Developer
& Team Lead

Leading full-stack delivery across SaaS, CRM, real-time systems, automation tools, and high-performance web applications.

40%Faster client sales response

35%Lower average API response time

45%Improved key page load speed

90%Manual research automated

Led a four-person engineering team across 10+ production SaaS modules.
Managed 5+ Australian and European client accounts end-to-end.
Built multi-tenant job systems, enterprise CRM, subscriptions, and real-time messaging.
Owned code reviews, sprint planning, technical mentoring, and release quality.

React · Next.js · Node.js · PostgreSQL · MongoDB · Redis · AWS

04 / TOOLKIT

A versatile stack.
One clear standard.

The tools change. The goal stays the same: reliable systems, clean delivery, and a product people enjoy using.

Languages

JavaScript · TypeScript · Python · SQL

Frontend

Next.js · React · React Native · Tailwind

Backend

Node.js · Express · Flask · REST APIs

Data

PostgreSQL · MongoDB · Prisma · Redis

Cloud

AWS · Docker · CI/CD · Vercel

Systems

BullMQ · Socket.io · WebSockets

Payments

Stripe · Subscriptions · Webhooks

Automation

Selenium · Puppeteer · BeautifulSoup

EDUCATIONB.Tech · Computer ScienceSTAREX Institute of Education · 2019—2023

CERTIFICATIONResponsive Web DesignfreeCodeCamp

05 / COMMON QUESTIONS

Useful answers.
No guesswork.

Everything you need to know before hiring a senior full stack developer, Next.js engineer, or technical lead.

Can I hire Harsh Kumar for a freelance project?

Yes. Harsh is available for freelance full stack development, Next.js and React websites, SaaS MVPs, Node.js APIs, and Python automation. Based in Gurugram, India, he works remotely with clients worldwide. Share your scope, timeline, and existing codebase to discuss a suitable engagement.

Who is Harsh Kumar?

Harsh Kumar is a Senior Full Stack Developer and Technical Lead based in Gurugram, Haryana, India. He has more than three years of experience building SaaS platforms, enterprise CRM products, real-time applications, and automation systems for international clients.

Which technologies does Harsh Kumar work with?

His core technologies include Next.js, React, React Native, TypeScript, JavaScript, Node.js, Express.js, Python, PostgreSQL, MongoDB, Prisma, Redis, BullMQ, Socket.IO, AWS, Docker, and Stripe.

Can Harsh Kumar work remotely or with international clients?

Yes. Harsh is open to remote full-stack developer, senior software engineer, product engineer, and technical lead opportunities. He has managed Australian and European client accounts from discovery through deployment and support.

What kinds of software projects can Harsh Kumar build?

He builds custom SaaS platforms, React and Next.js websites, enterprise CRM systems, real-time chat and notification systems, subscription products, background job platforms, AI-assisted workflows, and Python automation tools.

What results has Harsh Kumar delivered?

His work includes 99.9% background job reliability, 45% faster page loads, 35% faster API response times, 40% faster sales response, and automation of 90% of manual research workflows.

How can I hire or contact Harsh Kumar?

Email harshkumar672001@gmail.com or contact him on WhatsApp at +91 8800288159 to discuss full-stack development, Next.js, SaaS architecture, automation, or technical leadership opportunities.

06 / LET'S BUILD

Have a complex idea?
Let's make it clear.

Available for freelance development, ongoing product support, and remote Senior Full Stack Engineer or Technical Lead opportunities.

Email me WhatsApp

harshkumar672001@gmail.com

HARSHKUMAR

I don't just
build websites.

I build
strong systems.

I build
impact.

Strategy in the front.
Strong systems underneath.

SaaS Architecture

Technical Leadership

Full Stack Engineering

Real-time Systems

Client Partnership

Performance

Your idea.
My next build.

Launch a product

Improve what exists

Keep moving forward

Built to solve.
Designed to scale.

Find the signal.
Build what's next.

Trend2SaaS

Everyday tools.
Clearer decisions.

Claritools

Leading from
idea to impact.

Full Stack Developer
& Team Lead

A versatile stack.
One clear standard.

Languages

Frontend

Backend

Data

Cloud

Systems

Payments

Automation

Useful answers.
No guesswork.

Can I hire Harsh Kumar for a freelance project?

Who is Harsh Kumar?

Which technologies does Harsh Kumar work with?

Can Harsh Kumar work remotely or with international clients?

What kinds of software projects can Harsh Kumar build?

What results has Harsh Kumar delivered?

How can I hire or contact Harsh Kumar?

Have a complex idea?
Let's make it clear.

HARSHKUMAR

I don't justbuild websites.

I buildstrong systems.

I buildimpact.

Strategy in the front.Strong systems underneath.

SaaS Architecture

Technical Leadership

Full Stack Engineering

Real-time Systems

Client Partnership

Performance

Your idea.My next build.

Launch a product

Improve what exists

Keep moving forward

Built to solve.Designed to scale.

Find the signal.Build what's next.

Trend2SaaS

Everyday tools.Clearer decisions.

Claritools

Leading fromidea to impact.

Full Stack Developer& Team Lead

A versatile stack.One clear standard.

Languages

Frontend

Backend

Data

Cloud

Systems

Payments

Automation

Useful answers.No guesswork.

Can I hire Harsh Kumar for a freelance project?

Who is Harsh Kumar?

Which technologies does Harsh Kumar work with?

Can Harsh Kumar work remotely or with international clients?

What kinds of software projects can Harsh Kumar build?

What results has Harsh Kumar delivered?

How can I hire or contact Harsh Kumar?

Have a complex idea?Let's make it clear.

I don't just
build websites.

I build
strong systems.

I build
impact.

Strategy in the front.
Strong systems underneath.

Your idea.
My next build.

Built to solve.
Designed to scale.

Find the signal.
Build what's next.

Everyday tools.
Clearer decisions.

Leading from
idea to impact.

Full Stack Developer
& Team Lead

A versatile stack.
One clear standard.

Useful answers.
No guesswork.

Have a complex idea?
Let's make it clear.