Full Stack Development
Building responsive, reusable, and scalable web interfaces using Ember.js, React.js, Angular, HTML, CSS, and JavaScript.
Open to Opportunities
Hi, I'm Karthik S
Full Stack Developer. I build scalable SaaS applications and enterprise software with a focus on performance, maintainability, and user experience.
4.5+
Years Companies
100+
Issues Resolved
2
Companies
Open to projects
What I do
Services
Backend Development
Developing robust backend services, REST APIs, integrations, and business logic using Java, Scala, PHP, Node.js, and Struts.
Full Stack Development
Developing enterprise SaaS applications with secure integrations, RBAC, API development, and performance optimization.
Portfolio
Selected work
SaaS
Ember.js
Tailwind
Novu — SaaS Dashboard
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Fintech
Landing page
Finlo — Fintech App
Marketing site and onboarding flow for a personal finance app targeting young professionals. Java + Scala.
View case study →
Agency
Animation
Orea — Creative Agency
Bold editorial site for a Paris-based branding studio. Scroll-driven animations and custom cursor to match their premium positioning.
View case study →
About me
About Me
I'm Karthik, a Full Stack Software Engineer based in Chennai with 4.5+ years of experience building enterprise SaaS products and scalable web applications. I specialize in Java, Scala, JavaScript, PHP, Ember.js, React.js, and REST APIs.
I enjoy solving complex engineering problems, building reusable components, optimizing application performance, and collaborating with cross-functional teams to deliver high-quality software.
Stack & tools
Java
Scala
Ember.js
React.js
JavaScript
Node.js
CodeIgniter
REST APIs
Social proof
What clients say
"Karthik delivered our redesign in record time and the quality blew us away. Our conversion rate jumped 28% in the first month. Absolutely recommend."
"Working with Karthik is a dream. He asks the right questions, moves fast, and the final result always exceeds what we imagined. Our best hire of 2024."
"We had a tight deadline and a vague brief. Karthik turned both into a polished site in under two weeks. Clean code, zero hand-holding needed."
Thoughts
From the blog
Design
Mar 8, 2025
Why I ditched heavy CSS frameworks for Tailwind
After years of fighting specificity wars, here's what finally convinced me to make the switch.
Read more →
Dev
Feb 21, 2025
Building a design system from scratch in a weekend
Tokens, components, docs — the process I follow to spin up a coherent system in 48 hours.
Read more →
Freelance
Jan 14, 2025
5 lessons from my first year of full-time freelancing
Contracts, pricing, scope creep — the things nobody tells you before you go solo.
Read more →Contact Me
Let's Build Something Great
I'm currently open to Full Stack Software Engineer opportunities where I can contribute to building scalable SaaS products and enterprise applications.