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Andriy K.AK

Andriy K.

Mobile(React Native/Flutter)&FullStackWeb Solution

€215/day
Ustka, PL
8-15 years

Average response time: 1 hour

About Andriy

👋 We’re a team of seasoned developers with 15+ years of experience turning ideas into scalable mobile and web applications. From React Native & Flutter apps to Laravel & Node.js web platforms, we build solutions that are fast, secure, and built to last.

Over the years, we’ve partnered with startups, enterprises, and growing businesses – delivering everything from cross-platform mobile apps and SaaS platforms to payment systems, custom dashboards, and API-powered solutions.

✅ What We Deliver

📱 Mobile Development

Cross-Platform Apps – React Native & Flutter for wider reach with less effort
Native Android & iOS Apps – performance-focused and feature-rich
Custom Mobile Solutions – MVPs to enterprise-level apps
App Optimization & Maintenance – speed, stability, and legacy upgrades

💻 Web & Full Stack Development

Custom Web Apps – Laravel, PHP, Node.js, Vue.js, React.js
SaaS Development – multi-tenant, scalable, and secure platforms
API Development & Integrations – Stripe, PayPal, Payoneer, Twilio, Google APIs
Database Optimization – MySQL & PostgreSQL, tuned for high performance
Code Modernization – transforming messy legacy code into clean, maintainable systems
Cloud Deployments – AWS, DigitalOcean, CI/CD with Docker

🌟 Why Clients Choose Us

✔ 15+ years of proven expertise in mobile and web development
✔ Clear, jargon-free communication & transparent process
✔ Focus on long-term success – not just quick fixes
✔ Fast problem-solving & proactive approach
✔ Reliable team that delivers apps users love and businesses rely on

🚀 Whether you need a mobile app that scales, a full-stack web platform, or a robust API-driven system, we can take your idea, break it down, and build it into a polished, user-ready product.

📩 Let’s connect - tell us about your project, and we’ll bring it to life.
  • English

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • WILLOWTREE,
    Mobile App Developer
    January 2020 - January 2025 (5 years)
    Charlottesville, VA, USA
    • ● Developed and launched a mobile application that achieved a 4.5-star rating on both iOS and Android platforms, resulting in a 25% increase in user engagement and a 10% increase in revenue within the first six months.
    • ● Implemented automated testing processes that reduced the number of bugs by 50% and improved overall app performance by 30%.
    • ● Collaborated with cross-functional teams to design and implement a new user interface, resulting in a 15% increase in user satisfaction and a 20% decrease in user churn rate.
  • Rightpoint,
    Backend Developer
    January 2016 - January 2020 (4 years)
    Chicago, IL, USA
    • ● Integrated mobile applications with backend services, resulting in a 40% increase in app functionality and a 25% increase in user engagement.
    • ● Implemented security and data protection measures, resulting in a 50% decrease in security breaches and a 20% increase in user trust.
    • ● Collaborated with cross-functional teams to define and ship new features, resulting in a 30% increase in app downloads and a 15% increase in revenue.
  • Cubix,
    Junior Mobile App Developer
    January 2011 - January 2016 (5 years)
    Florida, USA
    • ● Developed and maintained technical documentation for mobile applications, resulting in a 20% increase in team productivity and a 10% decrease in development time.
    • ● Implemented automated build and deployment processes, reducing the average project delivery time by 25% and increasing team productivity by 30% over a one-year period.
    • ● Monitored and optimized mobile application performance, resulting in a 15% increase in app speed and a 10% decrease in app crashes.

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Education

  • Bachelor — Computer
    University of Toronto
    2009
    Bachelor — Computer

Skill set

Categories