Oleksii Fedorenko
Private message 
Offer work 
Sumy,
Ukraine
available for hire
Rating
Language proficiency level
Українська: fluent
English: advanced
Polski: pre-intermediate
CV
We provide web and mobile product development services. We build projects for businesses, non-governmental organizations, educational institutions, and government agencies across Ukraine, Europe, and the United States. Our agency focuses on effective collaboration with every client, building trusted, long-term partnerships that deliver mutual value for both sides.
We specialize in turnkey delivery of mobile applications and websites. Our team covers the full product lifecycle—from audit and discovery to development, launch, support, and promotion. Clients value this approach because it removes the need to manage multiple vendors, shortens delivery timelines, and ensures transparent, objective pricing.
In today’s highly competitive environment, businesses can’t grow without modern IT. Our agency helps effectively integrate business solutions into mobile apps and web projects. Aiming higher? We’re ready to bring your vision to life and help you achieve your goals.
Skills and abilities
Programming
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Bot Development
from 18 USD for hour
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Databases & SQL
from 9 USD for hour
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HTML & CSS
from 9 USD for hour
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Javascript and Typescript
from 14 USD for hour
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Testing & QA
from 9 USD for hour
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Web Programming
from 9 USD for hour
Design & art
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Interface Design (UI/UX)
from 12 USD for hour
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Mobile Apps Design
from 14 USD for hour
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Web Design
from 11 USD for hour
Services
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Online Stores & E-commerce
from 902 USD for project
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Payment Systems Integration
from 90 USD for project
Promotion
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Contextual Advertising
from 226 USD for project
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Marketing Research
from 135 USD for project
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Search Engine Optimization (SEO)
from 7 USD for hour
Mobile development
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App Development for Android
from 25 USD for hour
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Apps for iOS (iPhone and iPad)
from 29 USD for hour
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Hybrid Mobile Apps
from 19 USD for hour
Outsourcing & consulting
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Consulting
from 11 USD for hour
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Legal Services
from 23 USD for hour
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Project Management
from 11 USD for hour
Portfolio
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23 USD Mobile application for restaurants, cafes, coffee shops
Hybrid Mobile Apps
Mobile application for restaurants, cafes, coffee shops and other areas of business.
- Product catalog/ menu – to see full range of products and servises
- Registration/authorization – to use personal settings
- Personal account, orders history, favorites – to store information on favorite products and previous orders
… - Loyalty program, actions – to intensify customer activity
- SMS, Push-notifications – for quick news
- Online payments
- Table booking, preorder etc.
Put your business online and organize your work with the mobile application RestUp . Get rid of any restrictions, even quarantine. After all, RestUp has everything you need for full, convenient and efficient work on sales and delivery of orders to your customers.
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23 USD HowMe mobile application
Hybrid Mobile Apps
This application optimizes the interaction between users and their emotional states, allowing them to work effectively with emotions. With HOW-ME, users can track, analyze, and transform their emotions, turning them into a resource for personal growth and self-regulation.
It helps users track their emotional state and mood changes.
It provides a safe way to work with emotions using proven techniques.
It gives recommendations for transforming negative emotions into a resourceful state.
… It automatically generates personalized reports on emotional states.
It alerts users to critical changes in the emotional context for timely response.
The specified cost per hour of development.
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23 USD Mobile application Meet&Mint
Hybrid Mobile Apps
This application provides a unique user experience, allowing easy event planning, interaction with other participants, and earning rewards in the form of tokens. Meet&Mint enhances the convenience of social interactions, integrates blockchain capabilities for transparent transactions, and creates a new level of trust among users.
Functionality of the Meet&Mint app:
The ability to schedule meetings, participate in events, and synchronize data through a calendar.
Token generation (Minting) Users earn tokens for participating in meetings and achieving certain goals.
… Viewing token balance.
Transferring and receiving tokens from other users.
User profile
Personal data settings.
History of meetings and token minting.
Built-in chat for participant interaction at events.
Integration with maps to find nearby meetings.
Notifications about upcoming meetings and activity in the app.
User rating system (rewards for activity).
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23 USD Mobile application for fast online dating.
Hybrid Mobile Apps
The functionality allows you to easily connect with users near you using the built-in search on the map and find like-minded people in any corner of the world. Wherever you are, you can enter the application, open the interactive map and find someone to talk to.
Mater dating app is a product of KitApp mobile development studio. Our task was to create a dating and communication tool for a large number of users from different parts of the world. The client of the application is a customer from France, so we took into account the peculiarities of the French mentality when developing the application. We analysed competing products and created the most convenient tool that meets the needs of the target audience and has a significant competitive advantage. Complexity of the work done:
… Analytics. Studied the questions and needs of the target audience, analysed the competition to provide users with the best product with unique features.
Structure development. There are three main sections: a personal account with settings, an interactive map and chats.
UI/UX design. Customer provided application design.
Programming. Developed application architecture for iOS and Android, ensuring fast performance and the ability to optimise performance for a high-traffic, fast-growing product.
Publication. We submitted the application to the App Store and Google Play, optimised the pages in the stores.
The price is indicated for an hour of work.
#ReactNative #node.js #react.js #CSS3 #Firebase #webpack #gradle
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23 USD ZENOVA
Hybrid Mobile Apps
Mobile application and admin panel for a European cleaning business in trains. Full stack development on React Native.
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23 USD Mobile app Work
Hybrid Mobile Apps
This application allows candidates to easily find job opportunities, apply with a few clicks, and receive personalized recommendations based on their skills and experience. At the same time, employers can effectively create job postings, review applications, and connect with potential employees through the built-in chat. Work is now an important part of the client's ecosystem, helping to automate hiring processes, improving interaction between employers and candidates, and ensuring a high level of user satisfaction.
The specified cost per hour of development.
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27 USD NBCT Mobile App & Admin Panel
Hybrid Mobile Apps
Development of a unique mobile application with web access for a foreign company that allows automating and simplifying the process of working with data previously managed in Excel. The main task of the program is to reduce dependence on Excel spreadsheets in daily operations while maintaining the ability to automatically generate Excel files in the appropriate format.
Main functions of the program:
Collection and management of comments and data:
- Input of new comments and tasks.
… - Tracking execution statuses (open, resolved, rejected, etc.).
- Assigning responsible persons.
Automation of report generation:
- Exporting data to Excel format based on predefined templates.
- Ability to select parameters for reports (date, types of comments, status, etc.).
Accessibility and synchronization:
- Operation through a mobile application and web interface.
- Real-time synchronization between users.
Analytics and progress tracking:
- Displaying statistics (for example, percentage of resolved comments).
- Automatic updating of progress visualization status.
Expected results:
- Reduction of data processing time.
- Decrease in the number of errors due to automation.
- Increased transparency of data management processes.
- Improved accessibility of information for all stakeholders.
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23 USD NoveTaxi mobile application
Hybrid Mobile Apps
This application allows clients to easily find available transport, order rides in a few clicks, and receive transparent cost calculations. At the same time, drivers can efficiently manage orders, track routes, and receive up-to-date information about clients and rides.
Functionality of the NoveTaxi app
For clients:
… Registration and authorization.
Determining the client's current location.
Choosing the starting and ending points of the route.
Viewing the cost of the ride before ordering.
Tracking the car in real time.
Payment (cash, bank card, electronic wallet).
Rating the ride and the driver.
For drivers:
Registration and authorization (with document verification).
Notifications about new orders.
Accepting/rejecting orders.
Viewing the route and the client's location.
History of completed rides.
Managing status (available/busy).
The specified cost per hour of development.
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23 USD Mobile application LiveRSI
Hybrid Mobile Apps
Functionality of the RSI application:
The application provides up-to-date RSI data, allowing users to make informed decisions in a timely manner.
The ability to customize alerts for different assets and RSI levels enables users to monitor their own preferences and strategies.
It provides the opportunity to observe RSI indices across different timeframes for a deeper understanding of market conditions.
… The mobile financial application is currently published in marketplaces and facilitates effective client interaction with RSI, enhances the productivity of managers, and is the company's contribution to the future of its business.
The specified cost per hour of development.
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23 USD Kulffe mobile application
Hybrid Mobile Apps
Functionality of the Kulffe app:
The app provides up-to-date Kulffe data, allowing users to make informed decisions in a timely manner.
The ability to customize alerts for different assets and Kulffe levels enables users to track their own preferences and strategies.
It provides the opportunity to monitor Kulffe indices across various timeframes for a deeper understanding of market conditions.
… A separate role in the app for realtors to publish their listings.
There is an admin panel for managing clients and realtors.
Profile creation.
Identification of the executor's role.
Choice between buyer and tenant.
Verification of the realtor's identity.
Easy and intuitive search on the map of properties.
Filter by price, number of rooms, type, size, parking spaces.
Thanks to expert recommendations and convenient search features, finding the perfect property has never been easier. Start your property search today and make your real estate dreams a reality.
The specified cost per hour of development.
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23 USD Kango+ mobile application
Hybrid Mobile Apps
This application optimizes interaction between the company's departments – management, dispatchers, logistics, and drivers, ensuring process efficiency. With Kango Plus, clients receive transparent transportation management, timely execution of trips, and clear coordination among all participants.
Functionality of the Kango+ application:
Organization of interaction between the company's departments – management, dispatchers, logistics, and drivers.
Real-time tracking of trip execution.
… Ensuring timely information exchange among all participants in the transportation process.
Optimization of trip planning and driver allocation.
Analysis of trip efficiency through reporting and analysis.
The specified cost per hour of development.
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23 USD Mobile application DDDservice
Hybrid Mobile Apps
The mobile application DDD Service Transport App has been successfully published in marketplaces and has become a convenient tool for clients, simplifying the sending and tracking of parcels between Ukraine and Switzerland. It enhances the efficiency of managers, ensures transparency in the delivery process, and strengthens users' trust in the company.
Hourly rate.
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23 USD Mobile Approach Psychology
Hybrid Mobile Apps
The Appendix "Psychology" is created for parents seeking support and development for their children, as well as the opportunity to get advice from a child psychologist.
Psychology is an innovative supplement that contributes to the psychological development and support of children and their parents. Through expert consultations, individual courses and interactive application resources, it helps parents promote their child’s development and create a favourable family environment.
The cost is indicated for an hour of development.
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23 USD Mobile application Panbus
Hybrid Mobile Apps
The "Panbus" add-on is created to unite customers and subordinates on a single platform where they can quickly and easily find each other.
Features of Panbus:
Tickets for the required number of people.
You can select the date of flight and the return date of flight.
… Preparation of the ticket.
Payment of tickets online.
Account of the user.
History of travel.
The architecture of the program was represented by the client-server structure, the client part of which the user installs directly on a mobile device. During the work process, the client program exchanges data with the server side of the application through web services (API).
The cost is indicated for an hour of development.
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23 USD Mobile Washing App
Hybrid Mobile Apps
The "Wash" add-on is created to unite customers and subordinates on a single platform where they can quickly and easily find each other. In the app you will be able to easily and without special efforts to find reliable executives or earn by performing tasks on your own.
Features of the Wash:
Overall analysis: A review of key user metrics, orders and other important indicators.
… Customer management: Review the list of customers and their ordered services. Possibility of adding new customers and editing information.
Management of staff: Adding and managing staff of the mouse. Configuration of access and powers of employees.
Management of services: Creating and editing services, their description and parameters. Configuration of the work schedule and availability of services.
Viewing records and customer chat: Viewing customer records history on the dashboard. Possibility of communicating with customers through chat.
Support: Supporting users, responding to their questions and solving problems.
Reviews and compliments on completed projects 34
23 February
147 USD
Redesign of the mobile product card) — UX/UI
Everything is done at a high professional level. I recommend.
18 December 2025
575 USD
Redesign lekkolot.com
We made the design. Everything is good. Thank you.
28 November 2025
29 USD
Project consultation
work completed, was satisfied
7 August 2025
110 USD
Code review and refactoring of the mobile application
Alexey understood the technical assignment perfectly, immediately started working and completed the task quite quickly. We look forward to collaborating in the future.
14 May 2025
338 USD
Creating a mobile app (or a small website with password access to certain files)
Everything quickly, super! We are working
3 May 2025
534 USD
High-Fidelity Wireframes of the iOS application
Working with this specialist exceeded my expectations: everything was completed on time, with attention to detail and a full understanding of the task. Openness to revisions and high quality of work made the process as comfortable as possible. I will be happy to collaborate again and confidently recommend to others!
15 April 2025
275 USD
Creation of a mobile application for Apple and Android
Super service! It's a pleasure to work with Alexey and Alexander!
8 April 2025
264 USD
Development of the property search mode on the map (stage 2)
I am satisfied with the result, good communication, quick implementation, prompt bug fixes.
2 April 2025
564 USD
Development of a property search mode on the map (React SPA)
Everything is fine, the work was done quickly, we are moving on, the feedback will be updated after the complete completion of the project work.
3 March 2025
609 USD
Multiplatform mobile application
Collaboration with Oleksii Fedorenko was very pleasant and productive. He approached the development of the mobile application professionally, took into account all the wishes, and offered his ideas for improvement. The work was done qualitatively and even faster than the agreed deadline. I recommend him as a responsible and experienced specialist!
24 January 2025
535 USD
Application with questions
Everything is great, professional and on time
10 October 2024
23 USD
Consultation on the development of a mobile application.
I received answers to all questions, I recommend for collaboration)
10 September 2024
609 USD
Flutter app development
The excellent team will continue to work.
| Response review
9 August 2024
23 USD
Project consultation
Unfortunately, it was not possible to help with the specified project, however everything was prompt and clear, thank you for your time!)
16 July 2024
609 USD
Mobile application (iOS, Android)
Satisfied with communication and work. Everything is clear and within the agreed deadlines.
7 June 2024
45 USD
Consultation on node.js + setting up VPS for it
The consultation was conducted very professionally. They covered all the points that interested me. As a bonus, I received a lot of literature. I recommend for cooperation!
3 June 2024
370 USD
Set up node.js and exchange data with the website
The work is done well. Made convenient to use, even with a poor specification.
I recommend
1 May 2024
902 USD
Second stage - Mobile application on React Native
We are very satisfied with the work. A beautiful application has been created and everything we asked for has been implemented. Plus, help with technical issues where we are not competent. Thank you. We will contact you again)
26 April 2024
23 USD
Consultation on developing a bot in Node.js using the library Grammy JS
Very grateful for the work, everything was explained cool.
12 April 2024
967 USD
Mobile applied to React Native
The stage of work on the task is completed - the best impressions. Really like the result, good communication, sticking to deadlines. As a client, they suggest and help find the right solutions. We will definitely continue to cooperate on this and other projects.
3 April 2024
215 USD
Review of the code and architecture of the site.
Completed the task with quality and on time. Recommend.
28 February 2024
598 USD
2 Stage, mobile add-on
High quality of work, and communication, pleased with cooperation, we continue.
20 February 2024
434 USD
Create a workbook on Node.js
The professional approach, very pleased, I’m going to contact you again!
15 February 2024
643 USD
Phase 1 Mobile Development
Good experts, we will continue to work together, I recommend.
6 January 2024
11 USD
Mobile Application Consulting
Everything went well, we will work together.
14 December 2023
36 USD
Work on the Weekend
Быстро! Качественно! Мастер своего дела!
10 November 2023
23 USD
UI / UX Designer
Very grateful, everything was done very well and very well went not just beautiful but also so that the supplement was comfortable. Thank you 😉
6 November 2023
39 USD
React Native - Interview Coding Test
The work was done quickly and well, there were some nuances, but not substantial.)
31 October 2023
461 USD
Development of mobile applications - Phase 1
The first stage is completed, all according to TZ and design. It liked that the guys looked into the project in advance, found all the underwater stones and discussed them in advance.
I advise to work!
20 October 2023
230 USD
1 screen on React Native, only Front-end
Programming is generally good. The problem in the accuracy of the line - the artist claimed that the design (left on the drawing) fully corresponds to the app he made (right on the drawing, resolution 1 in 1) - and long did not agree to do it.
Of the plus - if you give a detailed instructions how to do (change the background there to such one, the size of the photos so, etc.He did it in general well. Of the disadvantages - you have to spend a lot of time on these instructions and with literally fighting to prove that it should be done (in the TZ).
You can recommend the performer to those who arrange the level of the layer on the picture, since the functionality is done quite well.
14 September 2023
564 USD
Development of a dating site on Android
They performed everything quality and quickly, quickly insighted in the API. Professionals, I recommend it!
11 September 2023
11 USD
React Native (Expo and RN CLI)
They solve the questions, which they provided a good advice. They also proposed the best solution to solve the problem. Thank you for help. I recommend
3 August 2023
677 USD
React-native mobile app uber/bolt (iPhone and Android)
The project is done in accordance with the agreements. Operational connection and subjective technical discussion. Everything is great.
25 July 2023
399 USD
Mobile application for sending notifications to SotaKZ
Alexey Master of his business, did what many did not. Thank you !The !
