Human-Centered Innovation with Scalable Tech
I build scalable, real-time systems and intuitive digital experiences—blending AI's power with human intuition to create technology that feels alive and retains the spark of .
001 / EXPERTISE
Tech Stack
I mostly use Typescript for frontend and backend development, and here's a comprehensive list of the technologies I love to work with and have worked with professionally.
FRONTEND DEVELOPMENT
Specializing in modern, user-centric web applications
FRONTEND DEVELOPMENT
Specializing in modern, user-centric web applications
TYPESCRIPT
Advanced4+ years of production experience
Type-safe development, advanced patterns, and complex state management
REACT
AdvancedEnterprise-level applications
Custom hooks, performance optimization, and complex component architecture
NEXT.JS
AdvancedFull-stack applications
Server components, streaming, and advanced routing patterns
HTML/CSS
AdvancedSemantic markup and modern CSS
Accessibility, responsive design, and modern CSS features
TAILWIND
AdvancedUtility-first development
Custom configurations, component design, and responsive layouts
BACKEND DEVELOPMENT
Building scalable server-side solutions
BACKEND DEVELOPMENT
Building scalable server-side solutions
NODE.JS
ProficientProduction microservices
Event-driven architecture, performance optimization, and security best practices
EXPRESS
ProficientREST API development
Middleware patterns, error handling, and API security
BUN
IntermediateHigh-performance applications
Fast runtime, built-in bundler, and TypeScript support
WEBSOCKETS
ProficientReal-time applications
Bi-directional communication, scaling strategies, and fallback mechanisms
DATABASE & INFRASTRUCTURE
Database design and infrastructure management
DATABASE & INFRASTRUCTURE
Database design and infrastructure management
POSTGRESQL
ProficientProduction databases
Query optimization, indexing strategies, and data modeling
SUPABASE
ProficientFull-stack integration
Real-time subscriptions, row-level security, and edge functions
REDIS
IntermediateCaching & queuing
Caching strategies, pub/sub patterns, and session management
CLOUD & DEVOPS
Cloud infrastructure and deployment automation
CLOUD & DEVOPS
Cloud infrastructure and deployment automation
AWS
IntermediateCloud infrastructure
EC2, S3, Lambda, and infrastructure as code
DIGITAL OCEAN
IntermediateCloud hosting
Droplets, managed databases, and container orchestration
DOCKER
IntermediateContainer orchestration
Containerization, multi-stage builds, and compose workflows
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.
MapMoji
Mobile app that bridges the gap between physical and digital worlds by empowering users to take photos of event flyers and turn them into digital map markers that everyone can see in real-time.
Cutting Edge
technology
Modular
architecture
Modern
ui
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 / BLOG
Latest Articles
Securing Docker Containers
Here's how I secured my Docker Containers and prevented subsequent Kinsing Malware Attacks
Intro
I'm starting this blog because I fear becoming one of the developers in the comic strip above (generated using AI, haha.) Now, the comic strip was my idea. I had to go through the cognitively intensive task of taking my inner world and my imagination and conveying that using language constraints to craft a series of prompts to get the desired output.
006 / 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.