Karthikeyan S
Full-stack mobile and web developer with strong hands-on experience building scalable, production-grade apps using Flutter, Native Android, and various modern web stacks. Successfully Published multiple apps on the Google Play Store with AdMob integration and monetization.
Crafting Digital Excellence
I'm a passionate full-stack developer with 3+ years of experience building scalable web and mobile applications. My journey spans from enterprise solutions at SAIL to innovative healthcare platforms, always focusing on delivering exceptional user experiences and robust technical solutions.
Full-Stack Expertise
Proficient in modern web technologies including React, Next.js, Node.js, and Python
Mobile Development
Specialized in Flutter and React Native for cross-platform mobile applications
Cloud Solutions
Experienced with AWS, Google Cloud, and modern DevOps practices
Client-Focused
Delivered successful projects across Healthcare, Enterprise, and EdTech sectors
Proven Track Record
Published apps on Play Store and deployed enterprise solutions for major clients
Performance Driven
Focused on building scalable, high-performance applications with optimal UX
My Journey
From student to professional developer
Freelance Developer
Building custom solutions for clients across various industries
Flutter Developer at Pep Softwares
Led mobile app development team and delivered multiple production apps
Computer Science Graduate
B.Tech with 8.5 CGPA, specialized in software engineering
Ready to work together?
Let's discuss your next project and bring your ideas to life.
Skills & Technologies
A comprehensive toolkit of modern technologies and frameworks I use to build exceptional digital experiences.
React.js
Next.js
JavaScript
TypeScript
HTML5
CSS3
Tailwind CSS
Material UI
Bootstrap
Education
My academic foundation in computer science and continuous learning journey.
Excel Engineering College, Namakkal
Key Coursework:
Saraswati Matric Hr Sec School, Salem
Key Coursework:
Saraswati Matric Hr Sec School, Salem
Key Coursework:
Work Experience
Professional experience building scalable applications and leading development teams.
Pep Softwares
Developed client-facing Flutter apps and full-stack MERN applications. Handled Supabase, Firebase, MySQL, MongoDB, and complete deployment lifecycle. Worked with UI/UX teams for fast, responsive mobile-first applications.
Key Achievements:
- Delivered production-grade mobile and web applications
- Managed complete deployment lifecycle
- Collaborated with UI/UX teams for optimal user experience
Technologies Used:
Internships
Early career experiences that shaped my development skills and industry knowledge.
Chemin Enviro Systems Pvt. Ltd., Erode
Developed internal tools (Site Monitor & Asset Track) using MERN stack. Focused on enterprise-grade field tracking, asset management, and real-time data handling.
Achievements:
- Built enterprise field monitoring application
- Implemented real-time asset tracking system
Tech Stack:
Steel Authority of India Limited (SAIL), Salem
Built employee health management portal using React.js, Node.js, and MySQL. Reduced latency by 40%. Gained hands-on experience deploying web applications on physical servers.
Achievements:
- Reduced system latency by 40%
- Deployed on enterprise physical servers
- Digitized health data management
Tech Stack:
Ether Infotech, Coimbatore
Developed Android modules in Java and integrated Firebase Authentication and Firestore. Gained experience in mobile UI development and user login flows.
Achievements:
- Built Android authentication modules
- Integrated Firebase services
Tech Stack:
Crescent Infotech, Erode
Built basic ML pipelines and performed data analysis using Pandas and Matplotlib. Visualized insights from structured datasets and practiced real-world Python use cases.
Achievements:
- Developed ML data pipelines
- Created data visualization dashboards
Tech Stack:
Featured Projects
A showcase of my recent work across healthcare, fintech, enterprise, and logistics sectors.
Premium Development Services
Comprehensive development services to bring your ideas to life with modern technologies and best practices.
My Development Process
A proven methodology for delivering exceptional results
Discovery
Understanding your requirements, goals, and target audience
Planning
Creating detailed project roadmap and technical architecture
Development
Building your solution with regular updates and feedback
Delivery
Testing, deployment, and ongoing support for your project
Certificates & Achievements
Professional certifications and continuous learning achievements that validate my expertise.
Client Testimonials
What clients say about working with me and the solutions I've delivered.
"Karthikeyan delivered an exceptional health management portal that transformed our employee health data processing. His technical expertise in MERN stack combined with his ability to deploy on enterprise servers, reduced our manual processing time by 40%. Highly recommended for enterprise-level projects."
AP Roy
AGM of C&IT at Steel Authority of India Limited (SAIL)
"Working with Karthikeyan on our field monitoring system was outstanding. He built a robust MERN stack application with real-time tracking capabilities that perfectly met our enterprise requirements. His understanding of complex business logic and technical implementation is impressive."
Saravana Kumar
GM at Chemin Enviro Systems
"Karthikeyan's Flutter development skills are exceptional. He delivered multiple production-grade mobile applications with seamless UI/UX and robust backend integration. His expertise in Supabase, Firebase, and deployment lifecycle management makes him a valuable full-stack developer."
Shri Gowtham
CEO at Pep Softwares
Download My Resume
Get a comprehensive overview of my professional experience, skills, and achievements.
Let's Work Together
Ready to bring your project to life? Let's discuss how I can help you build something amazing.
karthikeyan@karthi-nexgen.com
Phone
+91 9876543210
Location
Tamil Nadu, India
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Currently accepting freelance work and consulting opportunities