Viktor Demko
Private message 
Offer work 
Kamenets-Podolskii,
Ukraine
available for hire
Rating
Language proficiency level
Українська: fluent
Русский: advanced
English: pre-intermediate
CV
Empowering Businesses Through Advanced Software Engineering.
Founded in 2010 and headquartered in Kamianets-Podilskyi, Ukraine, ITPromotion LLC has grown into a powerhouse of 20+ top-tier specialists dedicated to building high-performance digital products. We bridge the gap between complex business ideas and robust technical execution.
Core Expertise:
- Mobile Development: High-fidelity native and cross-platform apps for iOS & Android.
- Web Solutions: Complex Back-end systems, scalable architectures, and high-load platforms.
- Business Automation: Seamless payment gateway integrations, CRM/SaaS development, and third-party service synchronization.
- Advanced Tech: R&D, Big Data & Analytics, and Database optimization.
Our Technology Stack:
Mobile: Flutter (Primary), Objective-C, Swift, Java, Kotlin.
Back-End: Laravel (Expert level), Node.js.
Front-End: Vue.js, AngularJS, Modern HTML5/CSS3/SASS.
CMS: WordPress, OpenCart.
DB & Data: MySQL, PostgreSQL, MongoDB, NoSQL technologies.
At ITPromotion, we don’t just provide IT consulting; we become your long-term R&D partner. Whether you are a startup or an established enterprise, we deliver clean code and business-oriented results.
Skills and abilities
Programming
Mobile development
Administration
Portfolio
- All works 56
- Web Design 2
- Online Stores & E-commerce 1
- Website Development 28
- Web Programming 8
- Desktop Apps 2
- Apps for iOS (iPhone and iPad) 3
- App Development for Android 6
- Hybrid Mobile Apps 5
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700 USD Website of Helio Solution Company
Website Development
Development of the Helio Solution company website turnkey (design, layout, programming).
The project is implemented on Laravel, which allowed for the creation of a flexible and scalable architecture. The main focus is on presenting expertise through a catalog of completed projects. A convenient portfolio module has been implemented, where each solar station project has structured characteristics and a photo gallery.
… Particular attention has been paid to loading speed (optimization according to PageSpeed) and the convenience of the administrative panel for quick content updates without involving developers. A feedback form system has been set up for lead generation.
Stack: Laravel
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1448 USD Website of the public organization L.I.I.D
Web Programming
LEAD Foundation — website of a public organization
Our team developed a custom design, implemented the website on WordPress, and created a user-friendly administrative panel for content management. We also integrated the ability to receive online donations, which allows the foundation to effectively attract support. The website is responsive, with simple navigation and is user-oriented for individuals without technical skills.
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15 589 USD Tourist portal of Kamianets-Podilskyi
Web Programming
Kamianets Travel — a modern online platform for tourists that helps explore Kamianets-Podilskyi through routes, events, locations, and interactive maps. The website combines tourist content and a convenient structure, creating a comprehensive digital guide to the city.
The portal's functionality includes:
• Catalog of tours and routes (historical, sightseeing, automotive)
• Database of locations: landmarks, museums, panoramas, natural points
… • City events calendar
• Restaurants and accommodation places
• User personal account
• Interactive map
• Convenient administrative panel
The website is developed on Laravel.
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6000 USD ReBrain
Apps for iOS (iPhone and iPad)
The application we developed is a smart productivity assistant designed to combat digital overload and foster better habits. The user completes tasks such as exercising, reading, or meditating to regain the right to use harmful mobile applications (usually social networks and games).
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5731 USD PetKeeper Mobile App
App Development for Android
Solutions for pet owners in Sweden who need reliable and convenient pet care services. Using the PetKeeper mobile app, users can find trusted pet sitters, schedule appointments, and make secure payments — all on one platform.
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8000 USD Mobile application for logistics
Hybrid Mobile Apps
Mobile application designed to optimize logistics processes and manage warehouses and special equipment. The application provides a convenient and intuitive interface that allows users to quickly and efficiently manage all aspects of the logistics chain.
The application is developed on Flutter
Link: https://apps.apple.com/us/app/traffic-логистика-без-границ/id6469050036?platform=iphone
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7000 USD Mobile application CharterClick CRM
Hybrid Mobile Apps
Development of a mobile application - CRM system for yacht owners. The application allows managing yacht bookings and helps the owner control their business.
The application is developed using the following technologies: Flutter, Dart, Clean Architecture, Riverpod state management, Dio, Work with device storage, Firebase Authentication, Firebase Messaging
Links:
…
IOS https://apps.apple.com/us/app/charterclick/id1237641611
Android https://play.google.com/store/apps/details?id=com.charterclick.partnersapp&hl=uk&gl=US
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2000 USD Website of the municipal inspection department
Website Development
Development of the website for the Department of Municipal Inspection of the Kamianets-Podilskyi City Council. The website presents information about the Department of Municipal Inspection of the Kamianets-Podilskyi City Council, functionality has been developed that allows the car owner to check for fines and pay them.
The website is developed in Laravel.
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1500 USD Catalog website
Website Development
Development of a catalog website for Rubicon-Plast company. The main page is implemented in the format of a landing page, where the basic information is presented. Also, a catalog of the company's products is implemented, with product categorization added. The user can view the product in a modal window, where the zoom function for the product image in detail is added. There is an option to order the product.
The site is developed on Wordpress.
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900 USD Web platform Interest
Website Development
The platform provides the ability to register projects, create presentations, set conditions for raising funds, receive contributions from users, and ensure their return in accordance with the established conditions. The web platform also provides tools for communicating with partners and investors, as well as for analyzing the financial performance of projects.
Technologies used: Html / css / javascript / Astro
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10 000 USD Mobile Approach Interest
Apps for iOS (iPhone and iPad)
The developed mobile app allows users to view project presentations, calculate the profitability of deposits, receive privileges for partners, conclude contracts and make online payments. The add-on allows convenient and fast access to all the platform features and provides convenient navigation for users.
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5500 USD Administrative Panel of Mobile Appliance
Web Programming
Development of an administrative panel of mobile application management in the field of real estate investments. Realised user verification, functional investment process management and analytics. Also through this administrative panel can be administered the company’s website.
Vue.js 3, Typescript, Pinia and Rest API.
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6000 USD Additional to listening to music
Hybrid Mobile Apps
Develop a mobile app for listening to music on Apple Music and Spotify. The add-on allows users to add their own audio files, add friends, create letters, share letters and comment on them.
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10 000 USD 6ya - Instant Expert Help
App Development for Android
Our team has been involved in the development of a mobile app that allows you to contact the repair and maintenance professionals who can provide all the necessary assistance using a short phone or video call on your smartphone.
Add-on designed for Android and iOS
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860 USD Website of Transoila
Website Development
The website of the company "Transoila" is one of the main suppliers of fuel and chemical products in Europe. The website is built in the landing page format.
Reviews and compliments on completed projects 10
20 August 2024
128 USD
It is necessary to launch the application written in Flutter code.
Everything is great, fast, and of high quality! The guys gave a lot of advice and recommendations. I definitely recommend the professional team.
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16 April 2024
1095 USD
Implementation of Flutter
Guys did everything quickly and excellently, I recommend for cooperation
| Personal | Response review
15 April 2023
56 USD
Improve the Android application
Mobile, Mobile and Clear
24 February 2023
94 USD
Connect our project on Flutter (cryptocurrency) to the end
Everything went well, the performers were very responsive and exceeded the expectations set out in our TZ.
18 January 2023
67 USD
Alarm
Thank you for work. Everything is done correctly and according to the
8 November 2022
334 USD
Adding Stripe Payment to Android Mobile App
The work is done greatly, freelancer on communication, responds quickly and on the case, takes into account directions and comments, approaches the task responsibly and constructively.
I recommend it.
31 October 2018
13 USD
Development of WordPress website
Baggage for work
Everything is done as agreed. Even a little more 🙂
14 May 2015
15 USD
Errors Removal and Companion OpenCart Version 2.0.1.1
Everything was done well.
19 November 2013
11 USD
PrestaShop - MultiShop and Payment Methods
Thank you for work
Victor approaches the case professionally - pleased with his work entirely, I recommend as a qualified specialist
19 August 2013
9 USD
PrestaShop - the shop upgrades http://aj2.cleverdemo.co.uk
Everyone at the highest level is completely satisfied with the result. Thank you for your work - a responsible and honest freelancer.
I will cooperate with him further.
Activity
| Latest proposals 10 | Budget | Added | Deadlines | Proposal | |
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Kotlin apk Update 3 requests
22 USD
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Creation of a platform for finding psychologists
334 USD
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Refinement of the existing project on Laravel (PHP)
78 USD
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CRM system for Railway Logistics
4000 USD
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Online store
601 USD
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Development of a mobile application based on an existing online store
601 USD
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Service aggregator
445 USD
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Need to finalize the website on Laravel
89 USD
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Development of a simple internal web system on own hosting
1000 USD
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Creation of an online store
601 USD
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