Oleg Maksimenko
Private message
Offer work
Dnepr,
Ukraine
available for hire
Rating
Skills
Programming
Design & art
Mobile development
Portfolio
- All works 9
- Javascript and Typescript 1
- Online Stores & E-commerce 1
- AI & Machine Learning 1
- Hybrid Mobile Apps 6
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20 000 USD E-commerce platform "Zoolux" (app/website/admin panel)
Hybrid Mobile Apps
An e-commerce service is a comprehensive solution developed from scratch to meet the needs of modern online retail. Created from the ground up, this application and website encompass all the essential features required for successful online sales. Whether you are a small boutique or a large retailer, the service provides you with the tools necessary to thrive in the digital marketplace.
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15 USD UpKeepDay - mobile application for education
Hybrid Mobile Apps
I joined this project in the middle of its development. One of the first tasks was to refactor the previously written code for future capabilities without painful scaling of the application's functionality.
Then I faced various types of tasks, such as integrating the Facebook SDK, Firebase Cloud Messaging, the Stripe payment system, and others. Implementation of a visit calendar, audio feedback recording, recommendations, comments, and much more.
The project development lasted over 7 months.
After that, the application was successfully published on the App Store and Google Play.
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3500 USD "PhotoUP" - an application for photos and videos with artificial intelligence
AI & Machine Learning
PhotoUP is a cross-platform mobile application developed using React Native technology, designed for creative and convenient photo editing. The project is the result of an intensive three-month effort, from the initial concept to a successful market release.
Key features:
Photo transformation using artificial intelligence: PhotoUP integrates advanced artificial intelligence algorithms, providing users with a wide range of options for editing and enhancing their images.
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10 000 USD Brainrich - a platform for health and fitness (app/website/admin
Hybrid Mobile Apps
The company Brainrich Kids, specializing in home modular playsets, has developed a service that includes a Flutter-based app with AR and 3D models for assembly instructions and exercise videos for children's physical development. The service also includes an online store based on Shopify, connected to the app via API for seamless access to products. The admin panel allows for content management, making it easy to control the content of both the app and the website. All goals regarding functionality and usability have been successfully achieved.
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5200 USD "My Novel" - book reference application (in-app purchases)
Javascript and Typescript
In this project, the client only had an idea and design for the application. My part of the work included developing the back-end, an admin panel for content management, and a mobile application for two platforms, Android and iOS, with detailed testing of all functions. To date, the application has already been downloaded by over 5,000 users.
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3970 USD “Xevel” B2B mobile app
Hybrid Mobile Apps
by fde
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3270 USD “Aladin” E-Commerce mobile app
Online Stores & E-commerce
The Aladin app is designed to simplify the process of selecting and purchasing quality goods, mobile interaction between buyer and seller, and increase the company's online sales.
My task was to develop the front end for the existing backend.
Main implemented functionality:
Authorization and registration.
… The Multi-Language
Push notifications.
The User’s profile.
My favourites.
and Settings.
Search and Filter.
The shopping cart.
Catalog and categories.
The bonus program.
Guide to Selection. (Lottie Animation)
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1658 USD “TradeSpin” Cryptocurrency mobile app
Hybrid Mobile Apps
The client needed to develop a mobile application
(working with Android and iOS devices) to work with cryptocurrency.
(First stage)
… To implement the basic functionality of the application:
Convert selected cryptocurrency to another crypto or fiat currency.
Implement AdMob ad banners.
- Ability to choose light or dark design theme.
Localization of the application in 3 languages.
Implementation of notification functionality.
Schedule of changes in the rate of the selected cryptocurrency (year/month/7days/day).
Monetization of the application (content for sale).
(The Second Stage)
Testing of all implemented functionality.
Fixing of all bugs.
Check testing of fixed bugs.
(The Third Stage)
- Publication (AppStore TestFlight&Build APK File for Android).
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725 USD “Company Standards” app for business
Hybrid Mobile Apps
The client has a retail chain of stores selling household appliances, the task of this application was to automate the process of monitoring the founder of the quality standards of the company.
The project was implemented on a turnkey basis starting with:
Analysis of the current business process
… Application design development
Writing Terms of Reference
Cost estimation and time of implementation
Main implemented functionality:
1 . Authorization in Google.
2nd Creating, reading, changing, deleting the store and its evaluation criteria.
Evaluating the fulfillment of the company's standards on the point system of bonuses.
4 . Generating an online report in Excel format.
and 5. Uploading photos and adding comments to this or that observation.
6 . Publishing the application.
Reviews and compliments on completed projects 9
9 December 2024
71 USD
Implement a promotional offer in subscriptions for 3 days free.
Everything is done well! I hope for further cooperation.
21 October 2024
147 USD
Add a feedback system to the app
Everything is great. I'm reaching out for the first time.
30 August 2024
313 USD
Optimization of the mobile application code on ReactNative
Everything is done well! I recommend.
18 June 2024
161 USD
Optimizing code of a mobile application on ReactNative
All done qualitatively! Recommend!
12 June 2024
111 USD
Optimizing code of a mobile application on ReactNative, work on chats
High-quality work, recommend.
15 May 2024
474 USD
Project A
Thank you Oleg for the completed work and for the final product! The result is at the proper level!
10 May 2024
388 USD
Optimizing code of a mobile application on ReactNative
The best ReactNative professional I have ever worked with. Fixed all the flaws in the code, optimization and code quality are top-notch. I recommend!
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17 July 2023
273 USD
Testing: Manual testing of the site on a cast CMS based on Laravel
The project is carried out professionally, timely, with timelines. Executive Oleg carefully and responsibly went to the assessment, the performance of the works and provided detailed and quality results. He was always in contact and gave answers to all the questions that arose, taking into account the wishes.
We’re planning to work in the future and I recommend the executive!
18 June 2023
95 USD
Calculator of Communal Services
The order was completed at a high professional level in a narrow time.
Activity
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Mobile application Privacy Fortress
19 USD
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Landing page. There is a design, need to do everything else (turnkey)
300 USD
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Website by example, Front 6/10 Back 3/10 Budget 1000$
640 USD
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Creation of an application for a retail store.
19 USD
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Improvement and support of the project on ReactJS (NextJS)
36 USD
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iOS/android app developer
19 USD
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LMS platform expert
142 USD
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Bolt Driver App
19 USD
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Improve the website
71 USD
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QR code. iOS and Android
19 USD
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