Ostap – iOS, Swift, SwiftUI

Welcome to the future of women's health with Femtek - the cutting-edge smart ring app that syncs seamlessly with the Femtek Basal Body Ring! Take control of your menstrual cycle, enhance body literacy, and embrace a harmonious approach to your reproductive health. Whether you're planning, tracking, or simply understanding your cycle, Femtek empowers you every step of the way.

• Led team of 3 developer for iOS/Android/Java BE
• Worked with BLE and HealthKit integration
• Refined and structured product requirements

Step back in time with the 8-Bit Sports Arcade, an exciting game app for your watch. Experience the nostalgia of classic 8-bit graphics as you compete in a variety of sports events like running, swimming, gymnastics, shooting, and rock climbing. Challenge your skills, beat high scores, and have a blast with these retro sports games right on your wrist!

• Helped with app architecture redesigns
• Participated in design sessions of app look and feel
• Helped redesign entire application

Surprise.com is the application for companies that want to build healthy corporate culture, motivate their employees and achieve more together, and transform their teams into top performers by eliminating apathy and increasing discretionary effort.

• Bootstrapped all mobile development in the company;
• Hired a mobile team of professionals (and grew the team from 2 developers to 25);
• Built reliable software architecture with a modular approach using the latest technologies and frameworks;
• Researched and then developed and maintained own animation tools in order to make the animation building process more flexible, reliable, and consistent;
• Introduced the best in industry standards of code review, technical design review, and code styles approach in the company.

Electronic mail that helps people to communicate more accessible and faster than other services.

• Participated in the architecture discussions and setup;
• Developed new features like a unified inbox, daily briefs, real-time updates, and communication with a remote server;
• Participated in Open Source project maintenance;
• Participated in product meetings and planning for upcoming features;
• Led team of 4 developers, dealt with high pace and changing product direction;
• Developed core features like concurrent database access, improved and reinforced real-time communication.

The Speaker application is created by a school teacher for students in Japanese that are preparing for the Eiken English test. The main features are:

1. Algorithm for repetitive learning
2. A gamified user experience that makes learning more fun and easy for students

• Developed tiny MVP, including just a core feature of discovering new words and phrases and marking them as learned;
• Developed the next version of the application integrating repetitive learning algorithm with other features like different learning modes (matching words, linking them into sentences, listening to new words, and practicing pronunciation);
• Created, integrated, and managed in-app subscriptions with included media content Improved application performance by introducing an on-demand resources feature.

Nutrition app is the health&fitness application developed as a white-label product with multiple consumers mostly used by different gyms in the Netherlands. The main features are:

1. White label products which allowed us to welcome more and more clients with minimal effort
2. Nutrition and fitness plan to achieve any fitness goal user might have
3. Mobile clients for both athletes and coaches with real-time chat and stats
4. Shopping lists to make users' lives easier with new nutrition plans.

• Developed features like a calories calculator, product's bar code scanner, and fitness&nutrition plans;
• Participated in design and technical discussions, having a direct influence on the product's future;
• Performed technical supervision of a few developers in the team.

The game helps toddlers to learn new words and their pronunciation in different languages in a very easy manner, just by playing with pictures. Main features:

1. Smart coloring algorithm which helps children's development and learning growth
2. Exciting animation and sounds transform your child's coloring experience into an actual cartoon, which they fill in and change with every touch.

• Developed and implemented an algorithm for smart coloring;
• Integrated social media share options like Facebook;
• Developed parental gate feature;
• Created, integrated, and maintained in-app purchases.