@davidkarandzhulov
I build scalable full-stack web applications with React, Node.js, and cloud infrastructure.
SerbiaAt Migma, I rebuilt core React and TypeScript user flows, decomposed a monolithic portal into Node.js and GraphQL microservices, and helped sustain 99.8% uptime under a 2M+ MAU load.
I've delivered high-concurrency applications at Ernst & Young and production UI features and APIs at BairesDev. Across frontend architecture, PostgreSQL optimization, Redis caching, security, and CI/CD automation, I focus on faster delivery, responsive systems, and maintainable code.
Work history, roles, and key accomplishments
Migma
Jan 2022 - Jan 2026 (4 years)
Rebuilt core user-facing flows in React and TypeScript with reusable, tested components, cutting new feature development time and reducing UI-related production bugs. Led the decomposition of a monolithic portal into independently deployable microservices (Node.js, GraphQL), enabling faster release cycles and sustained 99.8% uptime under 2M+ MAU load.
Degrees, certifications, and relevant coursework
Master's degree, Computer Science
2013 - 2015
Pursued a Master's degree in Computer Science at the University of Niš from 2013 to 2015.
Bachelor's degree, Computer Science
2009 - 2013
Completed a Bachelor's degree in Computer Science at the University of Kragujevac from 2009 to 2013.
Software and tools used professionally
SerbiaYou can contact David and 90k+ other talented remote workers on Himalayas.
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