Zhandos is available for hire
Hire ZhandosZhandos Bolatbekov
Verified Expert in Engineering
Software Developer
Location
Almaty, Almaty Province, Kazakhstan
Toptal Member Since
February 1, 2022
Zhandos is a software engineer with over five years of professional experience. He has worked on everything from designing to distributing enterprise-grade iOS apps in dynamic and deadline-driven environments while collaborating with cross-functional teams. A computer science graduate with a background in competitive programming, Zhandos has solved over 2,000 problems on Codeforces and similar websites.
Portfolio
Bakkal
Swift, iOS, SwiftUI, Combine
Appboxo
iOS, Swift, RxSwift, Deep Linking, Analytics
PrivadoVPN
Swift, Xcode, iOS, Mobile App Development, VIPER Architecture...
Experience
Availability
Part-time
Preferred Environment
Swift, iOS, SwiftUI, Figma
The most amazing...
...app I've created is Kitap, which allows audiobooks to be downloaded and listened to even offline and ebooks to be read in EPUB and PDF formats.
Work Experience
Senior Software Engineer
2023 - 2023
Bakkal
- Completely revamped the iOS application for couriers from scratch with modern, clean architecture using UIKit, SwiftUI, and Combine, which improved the scalability and maintainability of the code.
- Initiated the codebase conversion of the main consumer app, configuring it for the new architecture.
- Conducted regular one-on-one meetings with other iOS engineers to offer guidance and promote personal development.
Technologies: Swift, iOS, SwiftUI, Combine
iOS Engineer
2022 - 2023
Appboxo
- Implemented an analytic service that tracks events to several 3rd-party tools to measure user activity, where accuracy was essential, as $100,000 was spent on marketing.
- Launched several major features while working in a startup team, which closed a $7 million Series A funding round.
- Redesigned routing in the app for deep linking to make it route to corresponding screens by tapping on marketing URLs.
Technologies: iOS, Swift, RxSwift, Deep Linking, Analytics
iOS Developer
2021 - 2022
PrivadoVPN
- Implemented secure messaging through encrypted WebSocket channels in the iOS app and PrivadoVPN.
- Adapted the application’s UI layout for iPad devices.
- Developed auto-renewable subscriptions using Apple's in-app purchase technology.
- Evaluated candidates for the junior iOS developer roles.
Technologies: Swift, Xcode, iOS, Mobile App Development, VIPER Architecture, Flow Coordinators, WebSockets, Model View Presenter (MVP)
iOS Developer
2019 - 2020
Strong Team
- Developed from scratch and launched a mobile banking app, allowing thousands of children to pay for popular services, transfer money, and track spending.
- Integrated Google's Cloud Vision API into an iOS app and implemented a module for scanning a snapshot of a document, which reduced user interaction time with the app from five minutes to ten seconds.
- Redesigned several modules in the HomeBank app, locally ranked among the top two in the App Store's finance category. It has over 500,000 users.
- Managed the synchronization of the source code between teams.
- Established CI/CD pipelines on Bitrise, which automated the delivery of the freshest builds to the QA team.
Technologies: iOS, Swift, RxSwift, Bitrise, Software Development, XCTest
iOS Developer
2018 - 2019
InCraft Technologies
- Designed and developed an iOS application, which allows users to download and listen to audiobooks, even offline.
- Implemented a key reader module, which allows reading ebooks in EPUB and PDF formats.
- Achieved over 30,000 active app users per month. The app ranked among the top six in the App Store's book category.
Technologies: iOS, Swift
iOS Developer | Intern
2018 - 2018
Yandex
- Collaborated closely with a key team lead on Yandex's main iPhone app in a team spanning multiple cities.
- Implemented logging of the appearance of views on-screen to better understand the behavior of 500,000 users.
- Developed extensive snapshot tests for UI elements and fixed multiple legacy bugs.
Technologies: iOS, Swift, Git, Unit Testing, XCTest
iOS Developer | Intern
2017 - 2017
Codebusters
- Designed and developed a mobile app that helps cook with an intelligent food processor.
- Web-crawled and collected over 200 cooking recipes using Python.
- Conducted research on over 7,000 users from more than 70 countries.
Technologies: iOS, Swift, Python
Experience
Chess Legends
https://chesslegends.ai/A gamified chess application based on chess exercises of different levels, playing with the Stockfish engine and teaching video courses by chess world champions and international grandmasters. The app was implemented using SwiftUI, whereas its wireframe is UIKit.
Kitap
https://apps.apple.com/ru/app/kitap/id1046439139Kitap is a Swift-based app that allows users to download and listen to audiobooks even offline and allows reading ebooks in EPUB and PDF formats. This app achieved over 30,000 active users per month and ranked among the top six in the App Store's book category.
JuniorBank by BankCenterCredit
https://apps.apple.com/us/app/juniorbank-by-bankcentercredit/id1514548493This mobile banking application is decorated with beautiful illustrations. It allows thousands of children to pay for popular services, transfer money, ask for money from parents, and track spending.
Isker
Isker is an application that allows businesses to find, match, and hire personnel as line staff. The application supports two user roles (client and employee) and includes chat, maps, and push notifications.
Skills
Languages
Swift, C++, JavaScript, Python, Objective-C
Frameworks
SwiftUI, XCTest, Django, Combine
Tools
Xcode, Git, Figma, Apple Push Notifications, Generamba, Fastlane, SwiftGen
Paradigms
Model View ViewModel (MVVM), Unit Testing, STOMP, VIPER Architecture, Model View Presenter (MVP)
Platforms
iOS, Bitrise, Firebase
Other
Mobile App Development, Algorithms, Data Structures, Software Development, Carthage, CI/CD Pipelines, WebSockets, Localization, Flow Coordinators, Deep Linking, Analytics
Libraries/APIs
RxSwift, CocoaPods, Yandex Maps API
Education
2015 - 2019
Bachelor's Degree in Computing Systems and Software
Kazakh-British Technical University - Almaty, Kazakhstan
Collaboration That Works
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
1
Share your needs
Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2
Choose your talent
Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3
Start your risk-free talent trial
Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.
Top talent is in high demand.
Start hiring