Open to contracts · EU / US / Remote
React Native · Mobile Engineering · Architecture
Mykhailo
Dzhezhelo
Building high-performance mobile applications, realtime systems, and native integrations.
6+ years shipping production apps across iOS, Android, and web — Swift/Kotlin native modules, realtime architecture, and performance optimization.
Key results
- iOS screen-time enforcement without a public APISwift · JSI bridge · BGTaskScheduler4.8★ · 2,400+ DL
- Real-time auction bidding at 2,000+ concurrencyWebSocket · Redis · PostgreSQL£2M+ · 0 race conditions
- Offline medical intake for field healthcareMMKV · Firebase · JSON Schema98% completion · 0 data loss
- 34% bundle size reduction via performance auditMetro · Hermes · tree-shaking60fps sustained
profileavailable
name→Mykhailo Dzhezhelo
role→React Native · Mobile Engineer
focus→native integrations · realtime · offline-first
platforms→iOS · Android · Web
experience→6+ years production
status→open to contracts
status
✓types:clean
✓lint:zero
✓bundle:opt.
✓deploy:prod
recent projects
↳FocusGuardnative-bridge · iOS
↳Waddingtonsevent-driven · realtime
↳Vitadropoffline-first · mobile
$ available --contract
6+
yrs exp
20+
shipped
4.8★
rating
6+
years
20+
shipped
4.8★
rating