06/26/2026 updated

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Founder & Delivery Lead | Custom Software Teams | Flutter · iOS · Android · Laravel · Vue.js

Ivano-frankivsk, Ukraine
Only remote
MSc Computer Science
Ivano-frankivsk, Ukraine
Only remote
MSc Computer Science

Profile attachments

ByteCrab Design.pdf
Bytecrab Company.pdf

About me

Delivery lead building custom mobile & web products for healthcare and logistics. Flutter, native iOS/Android, Laravel + Vue.js. AI-assisted workflow for faster delivery without losing quality. Hire me to run your project or scale to a managed team. EU/UK time zones, fluent English.

AI AgentsFlutterPHPMobile Application DevelopmentContinuous DeliveryMobile Application SoftwareLaravelNode.jsPHP DevelopmentWeb ApplicationsWeb Application DevelopmentBackendVue.js
I run software delivery for healthcare and logistics companies. Most clients come to me with the same problem: they need something built well, and they need it to actually ship. One logistics client had drivers losing time in areas with bad connectivity. We rebuilt the app to work offline, and wait times dropped by a third. Their customer satisfaction went from 35% to 85%.

How you can work with me:
Bring me in to run your project, or scale to a managed team (developers, QA, project management) when you need to move faster. You assign the work. I own delivery, keep code quality high, and keep communication clear. No babysitting required.

Core stack:
  1. Mobile: Flutter for fast cross-platform delivery, plus native iOS (Swift) and Android (Kotlin)
  2. Backend: Laravel + PostgreSQL, clean and scalable APIs
  3. Frontend: Vue.js + TypeScript
  4. Design handoff: Figma-based, developer-friendly
  5. QA: manual and automated, included when needed
Recent work:
  1. Medical transport (UK): moved a top medical transport provider from a limited MVP to a secure in-house system managing patient transfers, crews, and live tracking
  2. Logistics: offline-capable Flutter app for drivers in low-connectivity regions, with real-time delivery management
  3. Femtech: an emergency patch on a connected biosensor app that cut support complaints by over 60% in the first week
  4. Healthtech: privacy-first allergy app launched on iOS and Android in 4 months, storing no personal user data
How we work:
EU/UK-friendly time zones, fluent English, agile process. AI-assisted delivery for speed, with QA and code review keeping quality intact. With a long-term mindset, my developers stay with you rather than rotating out. Start with one engineer and expand to a team as the work grows.

If you need a team that delivers and sticks around, let's talk.

Languages

EnglishFluentUkrainianNative speaker

Project history

A complex solution for art events - Full Development | Flutter | Laravel | Vue.js

TheCultivist

Internet & IT

10-50 team member

THE CULTIVIST
TheCultivist is a limited access arts club, providing members of the club a unique opportunity to attend the world’s leading and the most exciting art events.
Platform help clients not only visit the best events and exhibitions but also provide education and personalized service.

 
Business Need:
Before reaching GRT, the client already had a solution built, but the elite and community-based nature of the service demanded a better version of it.
Cultivist board decided to create a new service from scratch, to provide the best experience to their auditory.
One of the requirements was a seamless work of the service on mobile devices. The product should feel like a mobile app in terms of performance and usability.
How We Resolved It:
Initial requirements
Initially the client provided us very structured documentation, with only a few unclear points. In a set of calls, we clarified all the requirements and helped to complete the technical specification document.
Technologies and approach
To develop this product, we decided to use Laravel backend and Vue.js frontend. These two frameworks are among the best you can currently find on the market.
Work was organized in sprints, with Quality Assurance reviews at the end of each sprint. When new functionality was ready to be tested, it was deployed to staging for the client to review and provide feedback.
The project manager was working very tightly with the client to make sure both sides are on the same page and agree on how functionality should work.
During development, there were several changes we suggested. They were communicated to the client, discussed, and implemented after approval.
Interesting modules
Cultivist as a big project has several very interesting and challenging parts.
First is tight Salesforce integration. Service requires to sync data to Salesforce receive updates from it. Doing seamless integration between these two solutions is always interesting.
Another interesting feature is showing content based on user location. Client needs to see pre-filtered events for his City and have the ability to check other locations.
One more challenge was to create a set of filters. Cultivist has quite a complex filtering functionality, that allows user to filter based on multiple parameters.
And last but not least, Cultivist show content based on the client subscription type. Certain user types can see only a limited amount of information and we had to make sure it works perfectly.
Final Result
As a result of our work, the client received a really great solution that fully satisfies their needs. Product work well in both web browsers and mobile phones is very easy to use and easy to scale.

We continued our work with TheCultivist team and are working with them till now.

Medical transportation solution - Full development | Flutter | Laravel | Vue.js

SecureCare UK

Transport & Logistics

50-250 team member

Client Need:
The client is one of the UK’s top medical transport services, required to move from a limited MVP to a robust, secure system to manage patient transfers. Their goals:
  • Centralize all operational processes in one admin panel
  • Expand the system's features for better visibility and safety
  • Replace reliance on a 3rd-party platform with an in-house solution
How It Works:
  1. A dispatcher creates a booking in the admin panel, assigning crew, vehicle, and patient details.
  2. The crew receives updates on a tablet app and can report progress in real time.
  3. Admins monitor live locations, receive alerts, and can reassign teams as needed.
Key Features:
  • Team Management: Build and manage crews (staff + vehicle) directly in the admin panel
  • Real-Time Status Updates: Crews use tablets to send patient updates and handover notes
  • Booking System: Handles both ASAP and scheduled transports, with alerts and notifications
  • Reminder Logic: Prompts teams every 30 minutes to update job status if nothing changes
  • Report Exporting: Admins can export data to PDF and Excel for audit or handover
Outcome:
A custom-built, scalable solution that gave the client full control over their transport process, improved response times, and significantly boosted patient safety during crisis interventions.

Logistics app - Flutter Developer

NDA

Transport & Logistics

500-1000 team member

Tasks and Responsibilities during the Project
  • Developed a cross-platform mobile app using Flutter optimized for both modern and older Android devices.
  • Implemented offline navigation with embedded maps to support areas with weak or no internet.
  • Built a flexible delivery management system allowing drivers to reprioritize tasks, mark completions, and add comments.
  • Created a real-time chat system for drivers, including support for media sharing and future voice capabilities.
  • Added recipient ID scanning and digital document signing features to support contactless, paperless operations.
  • Integrated delivery history tracking for operational analytics and performance reports.
  • Handled third-party integrations: Firebase (real-time sync), Google Maps (location tracking), and Particle Analytical (app usage insights).
  • Resolved hardware compatibility issues through native element fallback and debugging tools (Instabug).
  • Adapted to a mid-project design overhaul without disrupting core app functionality.
Results
  • Delivery wait times in weak coverage areas reduced by 34%.
  • Company’s customer satisfaction score grew from 35% to 85%.
  • App launch led to 12 new business clients and interest from 8 more within 3 months.
  • Positioned the client as a top logistics provider in their region.
  • Ongoing support ensures continued stability and updates for the growing SaaS platform.

Period & Fertility tracking app

NDA

Pharmaceuticals & Medical Technology

250-500 team member

Tasks and Responsibilities during the Project
  • Investigated and resolved a critical desynchronization issue between the app and the biosensor device.
  • Delivered an emergency patch that restored notification delivery and enabled users to take accurate measurements again.
  • Implemented automatic biomaterial reanalysis in case of failed attempts.
  • Integrated a dynamic content feed using Contentful SDK to maintain user engagement and education.
  • Preserved the client’s branded visuals while supporting updated health data displays.
  • Conducted manual scenario testing from scratch due to a lack of documentation or past working builds.
  • Worked independently to identify and fix the root cause under time pressure.
Results
  • Fully restored core app functionality, eliminating user frustration during testing and data capture.
  • Reduced support complaints by over 60% within the first week after deployment.
  • Strengthened user trust by ensuring reliable measurement flows and timely health notifications.
  • Helped the client avoid delays in product release and preserve their reputation as a first-mover in femtech.

Radio station for club music - Flutter | Vue.js | Laravel development

Ziroop

Telecommunications

< 10 team member

asks and Responsibilities during the Project
  • Translated the client’s vision into a mobile-first, cross-platform app using Flutter, Vue, and Laravel.
  • Defined user flows and built wireframes focused on emotional engagement and low-friction onboarding.
  • Developed themed “dating room” infrastructure to host contextual group and one-on-one interactions.
  • Integrated Twilio SDK for secure, low-latency video and text chat during live events.
  • Built a flexible profile and subscription system with support for membership tiers and room access.
  • Implemented Firebase for real-time messaging, notifications, authentication, and performance tracking.
  • Integrated Google Maps API to support event localization and match suggestions based on user's region.
  • Ensured scalability and future-proof architecture for ongoing product evolution and new feature rollouts.
  • Maintained constant QA and performance testing across Android and iOS to guarantee consistent UX.
Results
  • Delivered a fully functional MVP within 10 months, meeting all technical and design milestones.
  • Achieved high app stability with zero major issues reported during the first 30 days of release.
  • Enabled hundreds of real-time connections during beta digital events with <100ms chat response time.
  • Secured long-term partnership with the client to support future updates, monetization, and scaling.

Allergy Health App

Laxiba

Pharmaceuticals & Medical Technology

< 10 team member

Tasks and Responsibilities during the Project
  • Defined core app concept and feature set tailored for users with food intolerances.
  • Designed and built native iOS and Android applications focused on speed, clarity, and dietary safety.
  • Structured a scalable food and ingredients database for real-time allergen detection.
  • Developed a smart classification system to flag risky ingredients based on personal profiles.
  • Enabled users to create and edit custom intolerance profiles with flexible dietary settings.
  • Built the entire app to work without storing personal data — using only locally generated device IDs.
  • Integrated Stripe, Google Pay, and Apple Pay for seamless subscription and in-app payment flows.
  • Delivered a demo version to allow users to explore the product before purchase.
  • Ensured stable performance and zero crash tolerance under time constraints through rigorous QA.
Results
  • Successfully launched on both iOS and Android within 4 months, meeting all client timelines.
  • Delivered a privacy-first solution with no user data collection — a rare achievement in healthtech.
  • Received positive early adoption thanks to intuitive UX and real-time classification.
  • Continues to serve a growing global user base with ongoing maintenance and updates.

Team enchancement for Betting apps - Mobile apps | Flutter

NDA

Internet & IT

500-1000 team member

SPORTS BETTING APPS
An intuitive set of apps with pre-match and live betting on all popular sports. This app is intuitive enough for new players and at the same time offers high-end functionality for advanced players. The users can make full, partial, and auto cash out, edit bet, bankers, and a lot of other staff. The app is linked with a canvas app with even more powerful functionality. All bet changes are updated instantly with the help of socket.io technology. And you will always be up to date with the help of configurable notifications.
Business Need:
The client reached us to enhance his existing team with several strong mobile developers in order to speed up the process of development and increase overall product quality.
Product is a SaaS for sports betting applications. The client has more than 10 different betting apps, that were originally built from one codebase, but at the moment differs a lot and in most cases could be treated as separate apps.
When the feature is done, it has to be distributed across all apps, which increases the complexity of development taking into account that code was quite different for some modules.
Overall code quality and architecture were poor, one of our goals was to improve these two aspects too.
How We Resolved It:
We started work with code review and codebase improvement, to build new features on a good foundation.
Modern “Clean Architecture” was implemented, to keep code organized and easy to work with. Refactoring was done to remove useless pieces of code and optimize overall app performance and stability.
After initial rework was done, the team focused on feature implementations per client request, while maintaining high coding standards.
Work was done both on iOS and Android, with a total of 4 developers in the team.
In one year, GRT managed to optimize existing development process, make the creation of new Saas products easier, added number of new features and improved overall quality of the product

Lottery application - mobile development | Flutter

NDA

Internet & IT

500-1000 team member

LOTTERY APPLICATION
Great lottery app with more than 10 games, updated UI and lots of good features. Each user can find his favorite game within the app, check favorites games, scan tickets and much more!
Business Need:
The lottery app we worked on was already present on the market. It has several lottery games and limited functionality.
The goal of cooperation was to strengthen the existing development team with several Senior developers in order to greatly increase application capabilities.
The client considered adding 8 new games, wallet, ability to scan tickets, favorite lotteries, history, and many more features.
Another task was to improve the overall code quality.
How We Resolved It:
Work started with a full review of the existing solution. The team identified weak spots, bottlenecks, and places for improvement. After initial analysis, work was started on functionality, and refactoring was done in parallel.
The first priority was the development of new lottery games, to attract more users to the application. After this was completed, we started to add new features to give users a better overall experience in the application.
The team was managed by Project Manager on the client-side, who set sprint goals, created tasks, etc.
The most challenging part of the job was communication. Often tasks were created without an appropriate description and it required an additional set of clarifications and calls to understand what has to be done. Since the project was long term cooperation, we got used to how project is managed and created our own process for clarifications that helped us to run everything very smoothly.
As a result of 1-year long cooperation, we helped the client to bring his product to an absolutely new level, with a lot of new functionality, a more stable code that is easy to maintain, and renewed product architecture.

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