Vladimir is available for hire

Vladimir Vlasov

Verified Expert in Engineering

VoIP Developer

Location

Haarlem, Netherlands

Toptal Member Since

August 26, 2020

Vladimir is a senior iOS developer with expertise in a variety of domains, including VoIP, media, dating, VPN, email clients, and others. He prefers Swift for writing apps but is also proficient in Objective-C code, REST, GraphQL, Realm, SQLite, and Core Data.

iOS UIKit REST APIs Swift Model View ViewModel (MVVM)ReactiveCocoa C#C++Objective-C Unit Testing JavaScript RxSwift Algorithms Python C VPN Auto Layout IMAP AVPlayer

Portfolio

Elements Interactive

Swift, TypeScript, JavaScript, iOS, Android, React Native, GitLab CI/CD...

ArtStation

REST, Alamofire, Unit Testing, Auto Layout, SOLID Principles, Networking, UIKit...

Faction Studio

REST, Siri, Alamofire, Auto Layout, SOLID Principles, Networking, UIKit...

Experience

iOS - 5 years Objective-C - 3 years Swift - 3 years Model View ViewModel (MVVM) - 3 years RxSwift - 2 years

Availability

Part-time

Preferred Environment

Xcode, Visual Studio Code (VS Code), Fastlane, Slack, MacOS

The most amazing...

...app I've developed allows users to customize prints on t-shirts, totes, and even sneakers. The app was specifically for iPads installed in retail stores.

Work Experience

Senior Mobile Developer

2022 - PRESENT

Elements Interactive

Embedded a Unity project to Swift and Kotlin apps and automated CI.
Built React Native bridges for the SDKs from access control market leaders.
Implemented Cruft template to unify architecture and tooling across iOS apps.

Technologies: Swift, TypeScript, JavaScript, iOS, Android, React Native, GitLab CI/CD, CI/CD Pipelines, Core Data, Firebase, Alamofire, R.swift, SwiftLint, Python, SwiftUI, Augmented Reality (AR), Core Location, AVPlayer, Unity, Unity3D, Kotlin

Senior iOS Developer

2019 - 2020

ArtStation

Designed and implemented two-factor authentication to protect our users.
Implemented UI for viewing video clips, 3D models, and panoramas.
Reworked a sharing extension to add an ability to post artworks in one tap.

Technologies: REST, Alamofire, Unit Testing, Auto Layout, SOLID Principles, Networking, UIKit, RESTful Services, REST APIs, Xcode, XCTest, RxSwift, Model View ViewModel (MVVM), Kotlin/Native, Realm, SDWebImage, iOS, Swift

Senior iOS Developer

2019 - 2019

Faction Studio

Designed iOS app architectures and client-server communication schemas.
Built and maintained a few iOS apps in different domains like dating, sports bets, retail, and VPN.
Started a self-hosted CI based on TeamCity and Fastlane scripts.
Designed a back end for dating app based on Django and GraphQL.

Technologies: REST, Siri, Alamofire, Auto Layout, SOLID Principles, Networking, UIKit, RESTful Services, JavaScript, REST APIs, Xcode, RxSwift, VPN, GraphQL, Fastlane, TeamCity, Django, Python, Swift, iOS

Senior iOS Developer

2016 - 2018

MobilitLab LLC

Implemented a file manager with access to local and shared file systems.
Added encryption for files, email messages, and embedded web browsers.
Designed and implemented an email client with Gmail and IMAP support.
Started an in-house CI/CD system based on Jenkins and Fastlane.

Technologies: REST, Unit Testing, Auto Layout, SOLID Principles, Networking, UIKit, RESTful Services, REST APIs, SQLite, UI Testing, Xcode, XCTest, ReactiveCocoa, iOS, Exchange API, SMTP, IMAP, Gmail API, Model View ViewModel (MVVM), Swinject, Swift, Objective-C

iOS Developer

2015 - 2016

Orion Innovation (formerly Mera)

Maintained a cross-platform library for a VoIP app.
Wrote high-level design documents for several major features of the application.
Implemented IPv6 support to maintain calls in IPv6 only networks.
Added Opus audio codec support to improve the quality of calls.
Programmed the app user interface including tricky custom components.

Technologies: REST, Unit Testing, Auto Layout, Networking, UIKit, RESTful Services, REST APIs, SQLite, Xcode, XCTest, Core Data, PJSIP, C, VoIP, iOS, Objective-C

Software Developer

2009 - 2015

NeoAxis Ltd.

Developed plugins for 3ds Max and Maya for simple and quality conversion of 3D models.
Ported the game engine to Mac OS X, Google Native Client, and Android.
Implemented Kinect and Leap Motion support to control games and simulators via hands.
Implemented real-time 3D objects cross-sections algorithm for a simulator for college students.

Technologies: JavaScript, Xcode, Microsoft Kinect, 3D Graphics, Python, Java, Objective-C, C++, C#

Experience

Voizzy

A React Native app for listening to text articles. Users can post links to text articles like news or posts on Medium. Then the back end converts text to speech and the content can be listened to like a podcast.

I was a mobile developer of this app for both iOS and Android versions. Also, I participated in designing UI for it. Furthermore, I was working on a web version of the app written in React.

Education

2005 - 2010

Bachelor's Degree in Computational Mathematics and Cybernetics

Kazan Federal University - Kazan, Russia

Certifications

NOVEMBER 2015 - PRESENT

Game Theory

Stanford University,The University of British Columbia through Coursera (MOOC)

MARCH 2014 - PRESENT

Algorithms

Princeton University through Coursera (MOOC)

MARCH 2014 - PRESENT

Artificial Intelligence Planning

The University of Edinburgh through Coursera (MOOC)

JANUARY 2014 - PRESENT

Machine Learning

Stanford University through Coursera (MOOC)

Skills

Libraries/APIs

REST APIs, PJSIP, Alamofire, SDWebImage, RxSwift, Gmail API, Exchange API, Node.js

Tools

Auto Layout, TeamCity, Fastlane, VPN, Xcode, Slack, GitLab CI/CD, SwiftLint, AVPlayer

Frameworks

ReactiveCocoa, UIKit, Core Data, Swinject, XCTest, Microsoft Kinect, Django, React Native, Unity, SwiftUI, Core Location, Unity3D

Languages

Swift, C#, C++, Objective-C, Python, C, JavaScript, Java, GraphQL, CSS, TypeScript, Kotlin

Paradigms

Model View ViewModel (MVVM), Unit Testing, REST

Platforms

iOS, MacOS, Bitrise, Visual Studio Code (VS Code), Android, Firebase

Storage

SQLite, Realm

Other

SOLID Principles, RESTful Services, Networking, Algorithms, Mathematics, Informatics, Machine Learning, Neural Networks, AI Programming, Game Theory, 3D Graphics, VoIP, IMAP, SMTP, Kotlin/Native, UI Testing, Siri, 3D, 3D Animation, Augmented Reality (AR), CI/CD Pipelines, R.swift

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