Building Secure & Scalable
Web Applications

Hi! I’m Adrian, a full-stack developer — focused on clean architecture, security, and real-world systems.

| Projects

Web App w/ High Conversion Rate

A secure CRUD task management application with user authentication and persistent storage.

MVP Web App$3k-4kOptimized: Speed & Cost

Stack: React.js · Node.js · Express · PostgreSQL · JWT

completed

Pet Store E-Commerce Platform

Inventory management system with role-based access control, audit logs, and secure authentication.

Business Dashboard$2.5k–$4kOptimized: Quality & Cost

Stack: Next.js · Node.js · PostgreSQL · RBAC

in progress

Stock Miner w/ AI Analytics

A full-stack financial dashboard with an AI-powered Q&A system that analyzes market data and documents to deliver insights, charts, and source-backed answers.

Financial Analytics$5k+Optimized: Quality & Scale

Stack: React · Node.js · PostgreSQL · Chart.js

in progress
Authentication Service

Authentication Service

Standalone authentication service implementing JWT-based login, refresh tokens, and access control.

Security Module$2k–$3.5kOptimized: Quality & Security

Stack: Node.js · Express · JWT · bcrypt

completed
Secure File Upload System

Secure File Upload System

Web application for uploading and managing files with validation, access control, and audit trails.

Internal Tool$2k–$3.5kOptimized: Security & Reliability

Stack: Next.js · Node.js · PostgreSQL · Cloud Storage

in progress
API Rate Limiter

API Rate Limiter

Middleware service that protects APIs against abuse using rate limiting and request tracking.

Infrastructure Component$1.5k–$3kOptimized: Performance & Reliability

Stack: Node.js · Redis · Express

planned

| About Me

I’m a full-stack developer focused on building secure and scalable web applications. I work across frontend, backend, databases, and authentication systems. I’m particularly interested in real-world platforms such as dashboards, inventory systems, and security-focused applications. I’m a full-stack developer focused on building secure and scalable web applications. I work across frontend, backend, databases, and authentication systems. I’m particularly interested in real-world platforms such as dashboards, inventory systems, and security-focused applications. I’m a full-stack developer focused on building secure and scalable web applications. I work across frontend, backend, databases, and authentication systems. I’m particularly interested in real-world platforms such as dashboards, inventory systems, and security-focused applications.

Adrian Karlo working on software systems

More Ways to Hire Me

Areas where I consistently add value across projects and teams.

Frontend Engineering

Building responsive, accessible interfaces with React, Next.js, and Tailwind CSS.

Backend Development

Designing RESTful APIs using Node.js and Express.

Database Design

Structuring relational data with PostgreSQL for scalability.

Application Security

Implementing authentication, RBAC, and OWASP protections.

| Hiring FAQ

Let’s Start Your Project

Have a project in mind or want to discuss a collaboration? Reach out through any of the channels below.