I Ship Apps to the Play Store & Production
ZOHO Android Dev · Play Store Apps · 10+ Security Certifications
Enterprise Android developer at ZOHO. Freelancer for startups, businesses, and students — React, Next.js, Java, Kotlin, Python. Security built in.
Live GitHub Activity
@Santhoshkumar2298Turning ideas into secure, scalable products — from Android apps to full-stack platforms.
Interactive Terminal
Hacker-style shell — auto-boots on scroll
Commands: help · skills · projects · contact · resume
I'm a Full Stack Developer and Android Developer with hands-on experience building production-grade web applications, mobile apps, and security solutions. From payment platforms at startups to enterprise software at ZOHO, I deliver code that scales.
Currently Member Technical Staff at ZOHO Corporation, building features used by millions. Previously shipped tele-health and IoT Android apps at HELYXON Healthcare.
React, Next.js, Node.js on the web. Java, Kotlin, Flutter on Android. I own features end-to-end — from UI polish to API design.
10+ certifications in ethical hacking and secure development. I build products that are robust by design, not patched after launch.
Interactive expertise across the full technology stack — from frontend to cybersecurity.
HTML 5
CSS 3
JavaScript
TypeScript
React
Sass
Bootstrap 5
AngularJSHTML 5CSS 3
Node.js
Express.js
MongoDB
Java
Kotlin
NPMProduction-grade applications spanning fintech, healthcare, security, and productivity.
A platform allowing users to report online scams and frauds with evidence to create awareness and protect others.
Problem
Online scams are increasing, with victims having no centralized platform to report and warn others.
Share life stories, lessons learned, and memorable moments. Includes to-do list for time management.
Problem
Users needed a combined journaling and productivity tool for personal growth.
GSTcred is a fiscal responsibility platform offering comprehensive bill payment services for credit loans.
Problem
Users needed a unified platform for bill payments and credit management.
Deep dives into all 8 projects — challenge to results.
Rising online fraud with no community-driven reporting system.
Design a user-friendly reporting flow with evidence management and public awareness dashboard.
Built responsive React frontend with Express API and MongoDB for scalable data storage.
Deployed live platform enabling users to report and browse scam reports for community protection.
Fragmented tools for journaling and task management.
Unified experience combining narrative writing with actionable to-do lists.
Server-rendered Express app with MongoDB persistence and responsive design.
Live deployed application serving users for daily journaling and productivity.
Build a production payment app for credit loans and bill payments.
Native Android development with secure payment integration.
Built with Java and Android Studio, published to Google Play Store.
Live app on Play Store serving real users for bill payments.
GSTCred mobile users needed a web portal for bill payments and account management.
Build a responsive AngularJS companion app sharing the same payment backend.
Developed modular AngularJS views with secure API integration for bill payment flows.
Delivered web platform extending GSTCred's reach beyond the Android app.
Designers and developers manually eyedrop colors from images — slow and inconsistent.
Automate palette extraction from URLs and file uploads with a simple CLI/GUI workflow.
Built Python image-processing pipeline supporting JPG/PNG with color clustering output.
Open-source tool on GitHub used for rapid design prototyping.
Users reuse weak passwords and lack a simple local manager without cloud risk.
Create an offline-first password generator with secure storage and clipboard workflow.
Python app with encrypted local storage, auto-copy, and site/username association.
Practical security utility demonstrating secure coding practices.
Online shoppers miss the best deals because manual price checking is tedious.
Automate product price monitoring across major Indian e-commerce platforms.
Python scraper with scheduled checks and price-drop alert notifications.
Helps users save money with timely alerts on tracked products.
College library relied on manual records making student resource access inefficient.
Digitize library operations with a student-facing web portal.
AngularJS application with search, borrowing tracking, and admin data views.
Streamlined library management for students and staff.
Transparent packages designed to match your stage — most clients choose Professional for the best return on investment.
Prices are negotiable for Indian clients.
Websites and full-stack web applications with React, Next.js, Node.js — responsive, fast, and SEO-ready.
RESTful APIs designed for performance, security, and smooth frontend integration.
Integrate AI capabilities into your products for automation and intelligent features.
Custom automation scripts and workflows to streamline business operations.
Native Android apps with Java/Kotlin, Play Store deployment, and modern architecture.
Native apps built for the Play Store — not prototypes.
Learn more →React, Next.js & Node.js apps that are fast, secure, and SEO-ready.
Learn more →Fully working projects delivered on deadline — with the documentation your evaluator expects.
Learn more →Tkinter GUIs and Python tools that work — built for students and small businesses.
Learn more →A polished landing page for early-stage brands testing the market.
Deliverables
Multi-page business website with CMS — ideal if you only need a marketing site.
Deliverables
Full-stack web application — the complete product clients actually need to run a business.
Deliverables
Includes everything you'd need to launch — not just pages
Get Started — Best ValueEnd-to-end product development for teams that need dedicated engineering capacity.
Deliverables
Not sure which fits? Most growing businesses outgrow a static site quickly — Professional saves rework when you need logins, data, or an admin panel later.
Apps on Play Store, live web platforms, and enterprise software at ZOHO — not just tutorials.
One developer who speaks mobile, web, and API — fewer handoffs, faster delivery.
Certified in ethical hacking. Your product is protected from day one.
Regular updates, honest timelines, and documentation you can actually use.
A clear, predictable process — from first message to deployed product.
You share your goals, timeline, and budget. I ask the right questions and recommend the simplest path to a working product.
You get a clear scope, deliverables, timeline, and fixed price — no surprise hourly bills.
Regular updates, working demos, and honest communication. Code is clean, documented, and production-minded.
Deployment, documentation, and a walkthrough. Post-launch support included per package terms.
Real feedback from teams I've worked with.
“Santhosh developed my Student Management System project using Python and Tkinter and delivered a well-structured, user-friendly application that met all the project requirements. The system was fully functional, easy to navigate, and implemented with good attention to detail. Throughout the project, he demonstrated strong technical skills, clear communication, and a professional approach. He was responsive to feedback, provided timely updates, and ensured the final solution was delivered on schedule. I am highly satisfied with the quality of work and would confidently recommend him for Python development, desktop application projects, and academic software solutions.”
Sneha P
IT Support Specialist, TransUnion · SRM University
StudentFrom Android startups to enterprise software at ZOHO — building products that matter.
ZOHO Corporation Pvt. Ltd.
Working on ZOHO Forms to develop and enhance the forms application, contributing to enterprise-grade mobile solutions used by millions of users worldwide.
HELYXON Healthcare Solutions Pvt. Ltd.
Developed and enhanced Android applications under senior mentorship. Worked on ECDoc, a Tele-Consultation app for doctors. Integrated Pillbox monitoring for geriatric care.
Technify Solutions
Developed RFID Data Mapping App using Zebra Technologies SDK. Created GSTCred Payment App published on Play Store. Built College Library Management App.
Open to remote opportunities worldwide
10+ certifications in web development, cybersecurity, and mobile development.
Zaid Sabih, zSecurity
View Certificate
Kartikeyan V, Cappriciosec University
View CertificateThe tools and technologies I use to build modern products.
HTML 5CSS 3JavaScriptTypeScriptNode.jsExpress.js
PythonMongoDBPostgreSQLRedis
Java
Kotlin
DartNPMVS CodeBurp SuiteBrowse projects like repositories with detailed metadata.
Prevent Online Scams
A platform allowing users to report online scams and frauds with evidence to create awareness and protect others.
SEO-focused content on web development, cybersecurity, AI, and freelancing.
From IDOR vulnerabilities to CSP headers — a practical security playbook for Next.js App Router with real code patterns, a fintech case study, and interview-ready insights.
Stop competing on price. Learn positioning, service packaging, proposal frameworks, and outreach tactics that close ₹1–10 lakh projects — from a developer who's done it.
Code splitting, strategic memoization, Server Components, and list virtualization — practical techniques with before/after code that improved one dashboard from Lighthouse 42 to 91.
Common questions from clients, students, and recruiters.
Landing pages start from ₹5,000 ($53). Full-stack web apps from ₹16,500 ($199). Student projects typically range ₹5,000–15,000 depending on complexity. Enterprise quotes are custom. All packages are listed on the Services section.
Landing pages: 1–2 weeks. Full-stack apps: 4–6 weeks. Student/academic projects: 1–3 weeks. Timeline depends on scope — I provide a realistic estimate before we start.
Yes. I've delivered Student Management Systems, library systems, and Python Tkinter apps for university students — including projects for SRM University. You get working code, documentation support, and on-time delivery.
Yes. I'm open to remote full-time roles and freelance projects worldwide. Based in Tamil Nadu, India, with experience collaborating across time zones.
Android (Java/Kotlin), React, Next.js, Node.js, Python, MongoDB, and PostgreSQL. I also bring cybersecurity expertise — OWASP-aware development, secure APIs, and ethical hacking certifications.
Use the contact form, email me at santhoshkumar98.tech@gmail.com, or message on WhatsApp. I typically respond within 24 hours with next steps.
Available for freelance projects and remote opportunities. Get in touch today.
Location
Chennai, Tamil Nadu, India
Open to remote work worldwide