Vsevolod
From Ukraine (GMT+3)
12 years of commercial experience
Lemon.io stats
3
projects done2492
hours workedOpen
to new offersVsevolod – Java, Android, Kotlin
With a strong background in Android development, Vsevolod has been working with Kotlin since its first beta versions. He has significant experience in building products from the ground up. Additionally, Vsevolod is adept at mentoring, making him a versatile and experienced asset to any team.
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Potentially possibleExperience Highlights
Senior Android Engineer
A VoIP application for calls between doctors and their patients. You can make a call, receive it, write messages, and record voicemails.
- Fixed difficult bugs that previous devs were not able to fix
- Added new functionality to the app and analytics
- Moved React Native code to the new functional approach
Senior Android Engineer
A bitcoin wallet. It serves to receive and send bitcoins to other wallets. Main features:
- Is written completely on Jetpack Compose
- Uses LND library internally for blockchain
- Wrote the app from scratch;
- Adjusted Jeckpack Compose;
- Figured out how to work with LND.
Android Feature Lead
Secure messenger that is supposed to be built on Blockchain. The team finished the mobile part, but Blockchain wasn’t ready in time. The project was closed because the company ran out of funds.
- Developed a secure messenger from scratch;
- Implemented audio/video/image upload to the server;
- Took part in architecture discussions;
- Performed code reviews;
- Implemented audio/video playback;
- Created full offline mode for a messenger;
- Developed group chats feature.
Android Feature Lead
A social network with a bunch of different functionalities. The main idea of this network was that a person would receive 1 “nim” for 1 minute of his life. After that, he could exchange it for some internal or external goods. Closed due to insufficiency of funds.
- Built very difficult custom views with custom animations;
- Decoupled the monolith project into modules using Dagger2. An additional difficulty was not breaking anything and splitting it step by step in order for other devs to start using this approach;
- Improved git workflow and work process;
- Performed code reviews;
- Mentored a team of developers.
Android Feature Lead
A small outsourcing company where he built a lot of projects from scratch: from book readers to social networks and MiBand Bluetooth app. In this company, he started to use Kotlin in production from the 0.6 beta version.
- Kept track of his team members' professional development;
- Participated in daily meetings with the clients;
- Made educational presentations for a team of developers;
- Performed code reviews;
- Developed software architecture for different projects.