Sergey K.
Cancun, Mexico
100%
Job Success
Top Rated Plus
Lead Android/iOS Developer
$75.00/hr
Ever felt swamped in the vast sea of mobile app developers? It's frustrating when deliveries are late, functionalities go missing, and codes resemble intricate mazes. Trust me, you aren't the only one navigating these waters.
Many collaborators have shared stories of past stumbles. But here's a ray of hope: we can steer towards a brighter horizon. With a decade under my belt and a heart full of passion, I aim to rewrite these narratives.
Some Milestones:
⭐ Spearheaded development for Fitbit, which impressively raised $66M.
⭐ Had the honor of collaborating with Pure, Powerdot, and Xsat, all of which celebrated significant investment milestones.
⭐ Steered numerous projects using cutting-edge technologies, simplifying and accelerating the development trajectory.
⭐ Seamlessly merged the principles of Agile & Scrum, fostering flexibility and quick turnarounds.
Let me introduce myself
I'm Sergey, possibly your next Lead Android/iOS Developer. The past decade has been an exhilarating roller-coaster, packed with invaluable experiences, challenges, and a string of successful projects. I've lent my expertise to startups, and industry giants, helping them manifest their mobile app dreams.
Why do they choose me?
✅ A relentless drive to craft projects that stand out and garner rave reviews.
✅ Undying support post-project because our relationship isn't just transactional.
✅ A rich toolkit encompassing Kotlin, Swift, and trailblazing frameworks like Jetpack Compose & SwiftUI.
✅ Agility in approach with a deep-rooted foundation in OOP & Functional programming styles.
My Array of Specialties:
📱 Leading mobile development with Kotlin, Java, Swift
🚀 Cross-platform mobile app development using Flutter, React Native
🌐 Backend prowess with Firebase and Node.js.
💻 Architectural excellence with MVVM, MVP, MVI, and VIPER.
🔄 Transparent updates and effortless communication, ensuring you're always in the loop.
In a nutshell? I value transparency, efficiency, and making a tangible difference. It's not just about crafting any mobile app, but sculpting one that resonates, scales, and surpasses the norm.
Ready to embark on an extraordinary journey? Let's unite over a virtual coffee and set the wheels in motion for your next mobile marvel!
Work history
Native Apple/Android mobile app for language learning game
Aug 29, 2023
-
Apr 11, 2024
"Sergey is very professional and proficient at what he does. Excellent, accurate work. I will definitely continue to work with Sergey as my app grows and changes."
Private earnings
Troubleshooting an Android Java App
5.00
of 2 reviews
Oct 20, 2023
-
Dec 19, 2023
5.00 "Sergey was prompt, responsive, and communicative throughout the project.
10/10 completed successfully, even went the extra mile!"
Private earnings
Update app assets
Nov 18, 2023
-
Dec 1, 2023
No feedback given
Private earnings
Chat Parsing and Emoji Recognition Feature Development
Sep 23, 2023
-
Oct 25, 2023
"Really enjoyed working with Sergey on this project task. He has excelled in a manner you would expect of his experience and credentials. Highly informed and very talented. I look…
Private earnings
Galaxy Watch (watchOS) Prototype Android App
Sep 13, 2023
-
Oct 2, 2023
"Sergey is a professional developer. Delivered the poject on time and meeting requirements."
Private earnings
Review of billing features
Aug 31, 2023
-
Sep 19, 2023
"It's great. He did a good job in a small amount of time."
Private earnings
Update current app to be compliant with Google Play Policies
Sep 8, 2023
-
Sep 12, 2023
"Sergey is so nice and easy to work with. Very honest with pricing. He works around the clock and is very communicative. The dream type of engineer to work with…
Private earnings
gRPC and more
Jul 23, 2022
-
Feb 17, 2023
Private earnings
Android Developer for Large Technical Recruiting SaaS Market Leader (Question/Problem Curation)
May 23, 2022
-
Feb 13, 2023
No feedback given
Private earnings
Android/iOS App Development for Daariz (educational app)
Jul 1, 2021
-
Jan 10, 2023
"Sergey was working for us for more than a year making a good start of our new educational Android app. He has good skills and a good view on the…
Private earnings
Android Developer
Mar 22, 2024
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Present
Job in progress
Private earnings
Update target APIs on two Android apps
Dec 23, 2023
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Present
Job in progress
Private earnings
Research Migrate CV Project to iOS
Nov 28, 2023
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Present
Job in progress
Private earnings
Android App Monetization Fixes
Nov 10, 2023
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Present
Job in progress
Private earnings
Mobile Application Developer - Cutting Edge Fitness App with IMU Integration
Sep 20, 2023
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Present
Job in progress
Private earnings
iOS & Android App Developer
Aug 24, 2023
-
Present
Job in progress
Private earnings
Android dev to implement file encryption system
Jul 6, 2022
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Present
Job in progress
Private earnings
Development and maintenance of Android app
May 4, 2022
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Present
Job in progress
Private earnings
Android expert to support existing application
May 4, 2022
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Present
Job in progress
Private earnings
Android TV app
Aug 17, 2021
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Present
Job in progress
Private earnings
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Skills
- Swift
- Android NDK
- iOS
- Mobile App
- Smartphone
- Wear OS
- VPN