Bluetooth LE
LED Controller
Control smart LED strips over BLE.
Available for freelance and contract
Senior iOS Engineer, Warsaw, Poland
Zakhar Sazanavets
I build iOS apps that make it to release and hold up in production.
Nine years of Swift and Objective-C across fintech, banking, video editing, social and media. I shipped a video editor to the App Store, designed the app architecture for one of the largest banks in Belarus, serving 500,000+ active users, and built 100+ apps from scratch.
100+
apps built from scratch
500K+
users on the bank app I architected
9
years of iOS
6
product teams
Experience
2016 - 202602/2024 - Present
Nicosia, Remote
Nicosia, Remote
Clideo Ltd
Senior iOS Developer, Video Editing
Social-first video editor for Reels and TikTok: timeline, trims, transforms, overlays and subtitles built on Swift and AVFoundation. Gesture-driven UI, picture-in-picture and split screen. A media pipeline that renders and exports up to 4K, with realtime subtitles over WebSocket.
SwiftMVVMSPMUIKitRxSwiftAVFoundationRealm
03/2023 - 02/2024
Minsk
Minsk
Alfa-Bank (Belarus)
Senior iOS Developer, iOS App Architect
New architecture for a retail mobile bank: cards, payments, credit, QR and savings. Owned the iOS app architecture end to end for one of the largest banks in the country.
SwiftCleanMVVMSPMURLSessionCombine
05/2019 - 12/2022
Minsk
Minsk
System Technologies
Senior iOS and Flutter Developer
Alfa Business Mobile 2.0, a corporate bank on iOS. Plus a Flutter client app for a Kyrgyz bank, Commercial Bank KYRGYZSTAN, covering retail and legal-entity flows.
SwiftFlutterMoyaRealmRxSwiftMVVM
01/2023 - 03/2023
Minsk
Minsk
Sababa Labs
Senior iOS Developer
Gem4Life messenger: realtime chat with social features and media sharing.
SwiftVIPERAlamofireCoreDataReactiveCocoa
09/2017 - 05/2019
Minsk
Minsk
CreateX
iOS Developer, Team Lead, Tech Lead
Led the team as iOS and Tech Lead. Built and shipped 100+ apps from scratch across utilities, media and privacy tools.
SwiftMVVMVIPERIn-App PurchasesAlamofireCoreData
2016 - 2017
Minsk
Minsk
Balinasoft
Junior iOS Developer
Search apps, e-signature on iPad, food delivery, taxi and an audio guide.
Objective-CSocketIOCoreDataMVC
Projects
100+ shippedThe full catalogue of product lines I can document, grouped by where they were built. White-label reskins are counted once.
Balinasoft
FoodBand (food delivery), MyCityVoice (geo audio guide), TaxiExpress (taxi and roadside), BP Monitor (blood-pressure tracker), Uglevodov.net (calorie tracker), PressFeed (PR platform), RC-School (school access), EQIP (emotion tracker), Autoinstructors (driving instructor catalog), Poker Guide (handbook and game), GitHub client (OAuth2, offline cache).
CreateX
Calc+ and Private Photo Safe (private vaults), Call Recorder, Second Number (virtual phone number), Spam Blocker (CallKit call blocking), Leak Inspector (breach checker), Voice Changer, Colorize (photo colorization), Heart Rate (camera pulse monitor), Calorie Balance (nutrition tracker), Transfer and iManager (file managers with cloud sync), SynCon and Smart Brusher (contacts backup and cleanup), InstaSpy, SocialAnalyzer, Likesboost and Local (Instagram analytics suite), Twin Finder and Double Face (face search), Resemblance (celebrity lookalike), Astro Chart (natal charts), Su árbol genealógico (genealogy search), Baby Sleep and Relax (sleep sounds), Sleep (relax video), Stories (chat fiction).
Banking and utilities
Alfa Business Mobile 2.0 (business banking, Alfa-Bank Belarus), Speedometer and Speedometer Pro (GPS speedometer and dashcam).
Flutter
Commercial Bank KYRGYZSTAN (retail and legal-entity banking apps).
White-label apps
Remotes for Samsung, LG, Vizio and Fire TV, Universal Remote, Chromecast streamer and Screen Mirroring (native TV network protocols), PDF Scanner, PDF Editor and Air Printer (documents), LED Controller (BLE), Voice Recorder (on-device speech + AI summaries), Watch Faces, Audio Editor and Volume Booster (media and audio), Plant Identifier (photo recognition and care), Authenticator (2FA), Hidden Camera Detector, AirPods Finder, Auto Clicker, Interval Timer, Alarm Clock, AR Ruler, Split Screen Browser and Body Temperature Tracker (security and everyday utilities), Baby Face Generator (AI), Ghost Detector, Cat Games and Truth or Dare (novelty and games).
The projects shown are the ones I can share publicly. Most of my work ships under client and NDA terms in private repositories, 100+ apps in total.
Selected work
9 public apps
Skills
Languages
SwiftObjective-CFlutter/DartC++CC#
Architecture
MVVMCleanVIPERVIPMVPMVCSPM
Apple
UIKitSwiftUIAVFoundationAVKitARKitCombineSwift ConcurrencyCoreDataPhotoKit
Reactive and networking
RxSwiftReactiveCocoaRESTGraphQLWebSocketsAlamofireMoyaURLSessionSocketIO
Data, DI and media
RealmCoreDataSwinjectKingfisher
Analytics and tooling
FirebaseGoogle AnalyticsYandex MetricaAppsFlyerXcode InstrumentsGitFigmaJiraCharlesProxyman
Education
2019
Information Systems and Technologies (Logistics)
BSUIR
2017
Foreign Languages (English)
Belarusian State University
Languages
RussianNative
BelarusianNative
EnglishIntermediate, B1
PolishPre-Intermediate, A2