Black and white portrait of Tehan Isum Manitha

Hey, I'm Tehan. I build full stack web apps that are fast, secure, and ready to scale.

WEB APPS SECURE SYSTEMS. Hey, I'm Tehan. I build full stack web apps that are fast, secure, and ready to scale.

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[ What I do ]

Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.

From database design to deployment, with security checked at every step.

[ What I do ]

Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.

From database design to deployment, with security checked at every step.

Sathosa Motors KPI system sign-in screen

A/L tutor e-learning platform landing page

Full Stack Web DevelopmentUI/UX ImplementationDevOps and DeploymentWeb Security (OWASP ZAP)AI Generated Marketing AssetsFull Stack Web DevelopmentUI/UX ImplementationDevOps and DeploymentWeb Security (OWASP ZAP)AI Generated Marketing Assets

FEATURED.

[ Case studies ]

Let's build something together.

Let's talk Explore the archive

[ My start ]

Tehan seated on a chair in front of a brick wall

I started with HTML, CSS and a lot of curiosity, then moved quickly into full stack work at the University of Colombo School of Computing. Today I take projects from requirement gathering and database design all the way to deployment.

[ About me ]

Outside of code, I'm usually on a cricket field. I captained the UCSC faculty team at the Freshers Tournament 2025, played in the 1st Battle of the Coders and captained UCSC in the 2nd in 2026. I also placed 19th at CodeRally Hackathon 2025.

Today my focus is clear: secure, well-built software with DevOps and DevSecOps from day one.

Tehan smiling with arms crossed, wearing an AI-Driven event badge

[ What I work with ]

Languages: Python, JavaScript, PHP, HTML/CSS, SQL
Frameworks / Tools: Next.js, Node.js, React.js, Supabase, Shadcn UI, Pandas, NumPy
Backend DB: PostgreSQL, MySQL, Supabase
Cloud / DevOps: AWS, DigitalOcean, Docker, Vercel
Web Security: OWASP ZAP
Other tools: Git, GitHub, Termius, Google Colab, Postman

Certified in the OWASP Top 10, DevSecOps practices and web application security testing with ZAP, I treat security as part of the build, not an afterthought.

[ Education ]

BSc in Computer Science, University of Colombo School of Computing (UCSC), 2024 to present
D.S. Senanayake College: G.C.E. O/L 7A 2B; A/L Combined Mathematics, Physics, Chemistry

[ Certifications ]

OWASP Top 10 (Packt, Coursera)
DevSecOps and Security Practices (Packt, Coursera)
Web Application Security Testing With ZAP (Coursera)
Linux Fundamentals with ACM UCSC

[ Achievements and leadership ]

19th place, CodeRally Hackathon 2025
Captain, UCSC faculty cricket team, Freshers Tournament 2025
Played in the 1st Battle of the Coders 50-over encounter, 2025
Captain, UCSC, 2nd Battle of the Coders, 2026
Vice captain, BRC Cricket Club U15 India tour, 2015
Represented D.S. Senanayake College in U13 and U15 inter-school cricket

Currently a Full Stack Developer at AiGenX Labs, building e-learning and performance platforms for real clients.

Download resume DevOps resume

[ My start ]

[ About me ]

Today my focus is clear: secure, well-built software with DevOps and DevSecOps from day one.

[ What I work with ]

Languages: Python, JavaScript, PHP, HTML/CSS, SQL
Frameworks / Tools: Next.js, Node.js, React.js, Supabase, Shadcn UI, Pandas, NumPy
Backend DB: PostgreSQL, MySQL, Supabase
Cloud / DevOps: AWS, DigitalOcean, Docker, Vercel
Web Security: OWASP ZAP
Other tools: Git, GitHub, Termius, Google Colab, Postman

Certified in the OWASP Top 10, DevSecOps practices and web application security testing with ZAP, I treat security as part of the build, not an afterthought.

[ Education ]

BSc in Computer Science, University of Colombo School of Computing (UCSC), 2024 to present
D.S. Senanayake College: G.C.E. O/L 7A 2B; A/L Combined Mathematics, Physics, Chemistry

[ Certifications ]

OWASP Top 10 (Packt, Coursera)
DevSecOps and Security Practices (Packt, Coursera)
Web Application Security Testing With ZAP (Coursera)
Linux Fundamentals with ACM UCSC

[ Achievements and leadership ]

19th place, CodeRally Hackathon 2025
Captain, UCSC faculty cricket team, Freshers Tournament 2025
Played in the 1st Battle of the Coders 50-over encounter, 2025
Captain, UCSC, 2nd Battle of the Coders, 2026
Vice captain, BRC Cricket Club U15 India tour, 2015
Represented D.S. Senanayake College in U13 and U15 inter-school cricket

Currently a Full Stack Developer at AiGenX Labs, building e-learning and performance platforms for real clients.

Download resume DevOps resume

WEB APPS SECURE SYSTEMS. Hey, I'm Tehan. I build full stack web apps that are fast, secure, and ready to scale.

Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.

Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.

FEATURED.

Let's build something together.

WEB APPS SECURE SYSTEMS. Hey, I'm Tehan. I build full stack web apps that are fast, secure, and ready to scale.

Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.

Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.

FEATURED.

Learning platform connected to a company-wide KPI system

Performance tracking with real-time dashboards for executives

One platform for 500+ students, live classes and payments

This portfolio, with CI/CD and automated security checks

HireFlow

Advertisement Recommendation Engine

Panora, Blog Posting Webpage

Where I ship real products for real clients.

Full Stack Developer

AI Generated Assets

I'm Tehan, a Computer Science undergraduate at UCSC and a full stack developer building real products.

Let's build something together.

Learning platform connected to a company-wide KPI system

Performance tracking with real-time dashboards for executives

One platform for 500+ students, live classes and payments

This portfolio, with CI/CD and automated security checks

HireFlow

Advertisement Recommendation Engine

Panora, Blog Posting Webpage

Where I ship real products for real clients.

Full Stack Developer

AI Generated Assets

I'm Tehan, a Computer Science undergraduate at UCSC and a full stack developer building real products.

Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.

Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.

FEATURED.

Let's build something together.

Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.

Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.

FEATURED.

HireFlow

Advertisement Recommendation Engine

Panora, Blog Posting Webpage

Where I ship real products for real clients.Where I ship real products for real clients.

Full Stack Developer

AI Generated Assets

I'm Tehan, a Computer Science undergraduate at UCSC and a full stack developer building real products.I'm Tehan, a Computer Science undergraduate at UCSC and a full stack developer building real products.

Let's build something together.

HireFlow

Advertisement Recommendation Engine

Panora, Blog Posting Webpage

Where I ship real products for real clients.Where I ship real products for real clients.

Full Stack Developer

AI Generated Assets

I'm Tehan, a Computer Science undergraduate at UCSC and a full stack developer building real products.I'm Tehan, a Computer Science undergraduate at UCSC and a full stack developer building real products.

Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.

Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.

Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.

Secure, scalable web apps and dashboards, built end to end for teams that care about every detail.

Where I ship real products for real clients.

I'm Tehan, a Computer Science undergraduate at UCSC and a full stack developer building real products.

Where I ship real products for real clients.

I'm Tehan, a Computer Science undergraduate at UCSC and a full stack developer building real products.