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Alexander Kalapsazov
React Native Developer
Sofia, Bulgaria
Available for work
About me
Hello, I'm Alex, React Native developer with 8 years of expertise in crafting production grade mobile applications.
What started as curiosity about how apps work turned into 8 years of crafting mobile experiences used by hundreds of thousands. I've worked across startups and established teams, always focused on clean code, reliable testing, and animations that delight.
Education
Edinburgh, UK
2015 – 2019
Bachelor of Software Engineering with Honours
Edinburgh Napier University
Focused on advanced software engineering principles, mobile application development, and software architecture.
Work Experience
Edinbrugh, UK (REMOTE)
2018 - Present
Senior React Native Developer
GearedApp Ltd
Building and scaling over 20 React Native apps with a focus on performance, reliable releases, and smooth UX across iOS and Android.
Pensylvania, US
Contractor
Lead Developer
Global New Media Holdings, LLC
Tech stack: React Native, TypeScript, Node.js, State Management, Push Notifications, Firebase, NestJS, CI/CD
Led end-to-end development of a civic technology platform enabling U.S. constituents to communicate directly with their elected representatives and members of Congress.
San Francisco, US
Contractor
Lead Mobile Developer
77Labs Inc.
Tech stack: React Native, TypeScript, Push Notifications, Web Socket Live Streaming & Chat, State Management, CI/CD
Led mobile app development for WANTD, a live commerce and social marketplace platform focused on sneakers, streetwear, and collectibles. Coordinated cross-functionally between two mobile developers and backend engineers to deliver a scalable, feature-rich product.
Vienna, Austria
Contractor
Senior React Native Developer
ToolSense
Tech stack: React Native, TypeScript, Push Notifications, GraphQL, Jest, Detox, Maestro, CI/CD
Supporting the growth and scaling of ToolSense’s mobile product. Contributed both hands-on development and strategic technical consultancy during a period of significant product expansion.
Sofia, Bulgaria
Contractor
Senior React Native Developer
Economedia
Tech stack: React Native, State Management, In-App Payments, Push Notifications, Network Operator Integration, REST APIs
Responsible for the maintenance, modernization, and continuous improvement of two cross-platform mobile applications serving the newspaper’s digital audience. Played a key role in stabilizing legacy systems while incrementally evolving the apps into scalable, high-performance mobile platforms.
Stack
React Native
Cross-platform apps.
Expo
App framework.
TypeScript
JavaScript With Syntax For Types
Xcode
iOS development.
Android Studio
Android development.
Skia
2D graphics.
Reanimated
Animations.
Supabase
Backend platform.
Firebase
Backend platform.
AWS
Backend platform.
Node.js
Backend runtime.
GraphQL
API query language.
CircleCI
CI/CD platform.
Detox
E2E mobile testing.
Jest
JS testing framework.
Maestro
UI testing.
Recommendations
William Tinney
CTO @ Greenpixie
"Alex was a 10/10 contractor with everything from communication to quality of work being exceptional. He has shown excellent technical knowledge, providing valuable insights into the project and has worked through the job ahead of schedule. I would 100% recommend him and will work with him again in the future."
Jonathan Woolf
Founder @ JoWoCo
"Alexander was fantastic. He went above and beyond on this assignment and seems to have a thorough knowledge of React Native"
Bojan Kalinic
CEO @ Iris Solutions
"Alexander was great and did his part exceptionally. Followed the timelines and the deadline. Although it was a small work he showed his skills to be up to par. I will definitely work him again for a similar project"
Let's talk
Time for me:
05:47 PM
Email:
akalapsazov@yahoo.com
Phone:
+359888998210
Socials:
LinkedIn
Reach out:
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