I seek senior mobile engineering roles driving React Native architecture, VoIP reliability, security-focused solutions, ai powered mobile solutions and CI/CD performance improvements within collaborative, product-driven teams.
DGOpen to opportunities
Dmitriy Grachev
@dmitriygrachev
Senior React Native developer and mobile architect specializing iт video players, streaming, voip and webrtc.
Russian FederationWhat I'm looking for
I am a Senior Mobile Engineer and Architect with over 8 years building high-performance React Native applications focused on secure, real-time communication.
I specialize in VoIP, WebRTC, native module development (Java/Kotlin, Objective-C/Swift), and led a complex migration to React Native 0.78 enabling the New Architecture.
My work includes engineering custom SSL/AIA trust management for enterprise PKI, stabilizing VoIP push handling in killed iOS states, and maintaining optimized forks of react-native-webrtc and react-native-callkeep for codec negotiation and SDP mangling.
I drive performance and CI/CD improvements, implement advanced networking and security patterns, and advocate modular, feature-sliced architectures to deliver reliable mobile products at scale.
Experience
Work history, roles, and key accomplishments
VI
Current
Senior React Native Developer
Vinteo
Feb 2023 - Present (2 years 11 months)
Led migration to React Native 0.78 and React 19 for a high-concurrency enterprise video conferencing client, engineered AIA-based TrustManager to resolve corporate PKI SSL failures, and stabilized VoIP push handling to ensure reliable call delivery in killed state.
EF
Frontend / Mobile Developer
Erlyvideo (Flussonic)
Sep 2017 - Aug 2022 (4 years 11 months)
Developed low-latency mobile streaming clients and native bridges for React Native, integrating and customising ExoPlayer/AVPlayer for HLS/DASH and improving stability across Android and iOS devices.
Education
Degrees, certifications, and relevant coursework
VR
Voronezh Institute of the Ministry of Interior of Russia
Specialist, Information Security of Telecommunication Systems
Completed Specialist program in Information Security of Telecommunication Systems, graduating in 2009.
Availability
Open to opportunities
Location
Russian FederationAuthorized to work in
Salary expectations
90k-130k USD
Social media
Job categories
Senior React Native Mobile DeveloperMobile ArchitectReact Native EngineerVoip EngineerFront End DeveloperMobile DeveloperPerformance EngineerSecurity EngineerDevOps EngineerSenior Full Stack Developer (React Native)Senior React DeveloperSenior Mobile DeveloperSenior Mobile App DeveloperSenior Mobile Application Developer (IOS Android)
Skills
React NativeReact 19React ReduxRedux PersistContext APIWebRTCIOS CallKitVoIP Push HandlingJavaKotlinObjective CSwiftSSL PinningAIA FetchingAxiosWebSocketsMVVMReanimated 2.0+Gesture HandlingFastlaneDockerGitlab CIHuskyDetoxExoPlayerAVPlayerBASHExpoFirebaseGitHubGitlabGradleJavaScriptLoopslottiePhaseRuffTaskTelegramToolkitiOSBridges
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