001 / EXPERTISE
Technical Skills
Focused on delivering high-performance web applications with modern technologies. Committed to continuous learning and best practices.
FRONTEND DEVELOPMENT
Specializing in modern, user-centric web applications
4+ years of production experience
Enterprise-level applications
Full-stack applications
BACKEND DEVELOPMENT
Building scalable server-side solutions
Production microservices
REST API development
Container orchestration
DATABASE & INFRASTRUCTURE
Database design and infrastructure management
Full-stack integration
Caching & queuing
4+
YEARS OF
DEVELOPMENT
$400K+
PRODUCT
IMPACT
AI-POWERED
WEB & CONTENT
SOLUTIONS
10+
DEVELOPERS
MENTORED
002 / ABOUT
About Me
Full-stack developer crafting thoughtful solutions that put people first
I believe in building technology that enhances rather than replaces human capabilities. With over four years of experience, I focus on creating applications that are both powerful and intuitive.
My approach combines technical expertise with a deep appreciation for human needs and experiences. I enjoy mentoring others and building tools that make a real difference in people's daily lives.
Core Skills
React, Next.js, TypeScript
Node.js, SQL, Supabase
Interests
Human-Centered Design
Tool Creation
FEATURED WORK
Designed and launched a white-label review management tool, contributing to a $400k+ product sale
CURRENT FOCUS
Building tools that amplify human capabilities
Creating intuitive, accessible interfaces
Fostering collaborative development environments
003 / FEATURED
MapMoji | Event Discovery
REACT NATIVE · TYPESCRIPT · DOCKER · REDIS · BUN · PSQL · AI · WEBSOCKETS
Next Gen
mobile app
A next-gen mobile app that revolutionizes the way people discover and attend events. Simply snap a photo of an event flyer, and the app will utilize AI to determine the details and the Google Places API will find the best location for the event. All of this is done in real-time.
Modern
UI/UX
Real-Time
Search
Map
Integration
004 / WORK
Recent Projects
A selection of recent projects showcasing my expertise in full-stack development, from interactive user interfaces to robust backend systems.
AI Content Optimization Tool
AI-powered content categorization tool using OpenAI's GPT-4, enhancing engagement workflows for Kent State University's OEOC.
100K+
Content Analyzed
95%
accuracy
97
performance
Alfaphox/Revive Ratings
A white-label review management tool that contributed to a product sale valued at over $400,000.
5K+
users
$400K+
revenue
80%
retention
Progressive Web App for Maxwell Pipeline Services
A PWA designed to streamline operations, achieving several thousand monthly uses.
10K+
Monthly Uses
40%
Efficiency Boost
Automated Email Distribution System
SendGrid API-based automation reducing email processing time from 4-5 hours to 20-30 minutes.
500K+
emailsProcessed
10x
speedImprovement
005 / CONTACT
Let's Work Together
Currently available for freelance projects and full-time opportunities. Let's build something great together.
Response Time
Usually within 24 hours
davidkalina@proton.me
CURRENTLY AVAILABLE
Open to discussing new projects and opportunities. Ideal project duration: 3-6 months.