David Kalina
/Full Stack Developer
Full Stack Developer blending strong design instincts with deep technical acumen. Over 4 years turning ambitious product ideas into scalable, polished software—from AI-backed QA systems to real-time dashboards. I thrive in fast-moving teams where I can own end-to-end delivery and build tools that make users' lives easier. Passionate about bridging user empathy with engineering excellence to ship impactful products.
Key Strengths
Technical Skills
frontend
backend
tools & platforms
Experience
Full Stack Developer
Spontigo | Vineyard, UT
- Developed an Al-powered QA system using natural language processing to flag risky client interactions in real time.
- Built dynamic, schema-driven form builder in Vue for concierge itineraries, enhancing data accuracy and productivity.
- Created responsive marketing pages and custom dashboards with Vue + React.
- Wrote global middleware to track API route health via AWS CloudWatch.
- Built a lead generation script installed on client sites (e.g., Hotel Park City).
Full Stack Developer
K-Optional Software | Brooklyn, NY
- Translated complex UI/UX designs into scalable React components.
- Built a Notification Center using Firebase and TypeScript to increase engagement.
- Integrated Twilio for secure phone provisioning; maintained robust API reliability.
- Led development of white-label review platform (Alfaphox/Revive Ratings).
- Mentored junior devs and conducted technical interviews to grow the team.
- Delivered a cross-platform PWA for operational efficiency at Maxwell Pipeline Services.
Full Stack Developer
Samba Scientific | Longmont, CO
- Automated cold-email flows using SendGrid API, streamlining marketing efforts.
- Built Python-based system to manage job board postings across platforms.
- Launched multiple landing pages and data-driven D3.js visualizations for clients.
Projects
MapMoji
A mobile-first event discovery platform that allows users to scan real-world flyers and instantly turn them into live map pins. Built with React Native and Expo, it leverages AI to extract event data from images using OpenAI-powered LLMs, and geolocates events with Google Maps and Mapbox APIs.
- Designed a scalable, containerized backend with PostgreSQL, Redis, and a multi-service architecture using Docker Compose.
- Implemented real-time WebSocket updates for map interactions and event publishing.
- Used text embeddings to enable intelligent search and filtering across thousands of events.
- Created a gamified leveling system to encourage user engagement, built with modular microservices.
- Developed custom image parsing logic and integrated cloud storage with DigitalOcean Spaces for fast, reliable event flyer handling.
Education
Software Engineering Immersive
General Assembly | Denver, CO
Completed 500+ hours of hands-on training in full stack web development. Built real-world applications using modern technologies and agile workflows.