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Senior
Registration: 19.08.2026

Anton Bondarenko

Specialization: iOS Developer
— Senior iOS Developer with 12 years of commercial mobile development experience. — Specializes in performance optimization, software architecture and complex UI for large-scale applications. — Worked on FinTech, enterprise messaging, FoodTech, and ride-hailing products. — During a planned UI redesign, identified underlying performance and architectural issues and advocated for a broader refactoring, reducing chat loading time from 8–10s to 0.5–1s and eliminating UI freezes. — Improved the crash-free user rate from 99.77% to 99.97%, reducing crashes from 300K to 40K, and optimized Sentry monitoring, cutting irrelevant errors from 25% to 4%. — Experienced in building white-label platforms powering 120+ applications and independently shipping a production white-label project end-to-end, from architecture to store release.— Core stack: Swift, UIKit, Objective-C, GCD, async/await, Clean Architecture, VIPER, Realm, REST API. — Commercial Flutter experience.
iOS Swift API Confluence Jira Software Development Git RESTful API Scrum OOP CI/CD methodologies Bash Flutter Agile DevOps GitHub Project Management
— Senior iOS Developer with 12 years of commercial mobile development experience. — Specializes in performance optimization, software architecture and complex UI for large-scale applications. — Worked on FinTech, enterprise messaging, FoodTech, and ride-hailing products. — During a planned UI redesign, identified underlying performance and architectural issues and advocated for a broader refactoring, reducing chat loading time from 8–10s to 0.5–1s and eliminating UI freezes. — Improved the crash-free user rate from 99.77% to 99.97%, reducing crashes from 300K to 40K, and optimized Sentry monitoring, cutting irrelevant errors from 25% to 4%. — Experienced in building white-label platforms powering 120+ applications and independently shipping a production white-label project end-to-end, from architecture to store release.— Core stack: Swift, UIKit, Objective-C, GCD, async/await, Clean Architecture, VIPER, Realm, REST API. — Commercial Flutter experience.
iOS Swift API Confluence Jira Software Development Git RESTful API Scrum OOP CI/CD methodologies Bash Flutter Agile DevOps GitHub Project Management

Portfolio

Togezzer

● Senior iOS Developer.

DeApp (Flutter/iOS)

● Lead Software Developer.

DeApp (Flutter/Android)

● Lead Software Developer.

Skills

Swift
iOS
UIKit
Objective-C
Clean Architecture
VIPER
GCD
async/await
Realm
REST API
URLSession
WebSockets
Flutter
Dart
Fastlane
Tuist
Sentry
Firebase
AppMetrica
Git
CI/CD
MVVM
SOLID
Coordinator
Swinject
Alamofire
Auto Layout
Foundation
AVFoundation
Instruments

Work experience

Senior iOS Developer
since 09.2024 - Till the present day |IT_One
Swift, UIKit, Objective-C, Foundation, GCD, async/await, REST API, URLSession, Alamofire, WebSockets, Clean Architecture, VIPER, Coordinator, Sentry, Firebase, AppMetrica, Fastlane, Tuist, Git, CI/CD
● Optimized Sentry-based monitoring, reducing irrelevant errors from 25% to 4% by maintaining a local Sentry SDK fork in Objective-C. ● Developed a CLI tool for automated sandbox environment creation, reducing setup time from 1-2 days to 30 minutes and accelerating feature development by 2-3x. ● Delivered key product features including feedback collection, surveys, and account opening for a FinTech super-app. ● Improved application stability, increasing Crash-Free Users Rate from 99.77% to 99.97% in one quarter through systematic defect resolution. ● Worked on a large-scale mobile banking super-app using VIPER, Clean Architecture, and modular architecture.
Senior iOS Developer
08.2022 - 07.2024 |Togezzer.net
Swift, UIKit, GCD, async/await, Realm, REST API, URLSession, WebSockets, Clean Architecture, VIPER, Git
● Initiated and advocated for a major refactoring of the chat module beyond the originally planned UI redesign, reducing load time from 8–10s to 0.5–1s and eliminating UI freezes and interaction delays. ● Performed deep profiling and refactoring of the data pipeline, eliminating repeated allocations during Realm-driven updates. ● Redesigned the media loading and caching pipeline, fixing race conditions and incorrect image rendering. ● Modernized UI components by migrating Context Menu and Attach Flow to current iOS APIs. Recommendation letter from the Founder of Togezzer available upon request.
Lead Mobile Developer (Contract, Part-time)
01.2017 - 01.2023 |CET
Swift, UIKit, Objective-C, REST API, URLSession, WebSockets, Git
● Built three native iOS applications from scratch for a ride-hailing ecosystem: passenger, driver, and concierge/doorman apps. ● Designed and implemented core business logic including ride-price negotiation and mapping services integration. ● Built the REST API networking layer supporting real-time order processing for thousands of concurrent sessions. ● Served as key developer from early stages, contributing to architectural decisions from concept to launch.
Mobile Developer → Lead Mobile Developer
09.2014 - 08.2022 |Business-Soft
Swift, UIKit, Objective-C, Realm, REST API, Git, CI/CD
● Developed key modules for a white-label platform that powered 120+ customized food-delivery applications. ● Built a white-label tablet application from scratch to automate banquet-order intake in restaurants. ● Progressed to Lead Developer over 8 years, mentoring team members and driving technical evolution of mobile products.
Lead Mobile Developer
since 03.2021 - Till the present day |DeApp
Flutter, Dart, Provider, GetX, GoRouter, REST API, Sentry
● Independently developed three commercial cross-platform FoodTech applications in Flutter. ● Designed architecture and implemented full development lifecycle: UI, business logic, maps, payments, and app store publication. ● Implemented white-label customization and integrated Sentry-based error monitoring.

Educational background

Engineer (PhD)
Till 2013
Odesa National Academy of Food Technologies
Computer Systems and Networks (Masters Degree)
Till 2010
Odesa State Academy of Refrigeration

Languages

RussianNativeUkrainianNativeEnglishIntermediate