Kateryna Z.

Hi! I’m Kate, a Mobile App Developer and leader of AcidSoft, a mobile development company focused on building and growing real digital products. I’ve been involved in delivering 30+ mobile applications across different industries - from MVPs and startups to production-ready business applications. I focus not only on writing code, but on understanding the product, user flow, business goals, and what it takes to make an app actually useful for its users. What I can help you with: * iOS & Android app development * Flutter & React Native * Native Swift & Kotlin * UI/UX design and implementation * Backend & API development * QA & testing * App Store / Google Play publishing * ASO and app growth * Product architecture and technical consulting Our technology stack: Mobile: Flutter, React Native, Swift, Kotlin Backend: Node.js, Java, Spring Boot Frontend: React, JavaScript, TypeScript Databases: PostgreSQL, MySQL, Firebase Maps & Location: Mapbox, Google Maps, GPS & real-time tracking AI: OpenAI, Gemini, RAG, AI-powered features Cloud & Tools: AWS, REST APIs, Git, CI/CD I have experience building applications where performance, scalability, GPS/location features, APIs, real-time data, payments, AI, and complex business logic are important. I also understand that building an app is only part of the job. A successful product needs good UX, reliable technology, the right architecture, and a clear path to acquiring users. That’s why my team can cover the full product development cycle - from idea and UI/UX to development, QA, release, and growth. If you’re looking for someone who can think beyond the code and help turn your idea into a real mobile product, I’d be happy to discuss it.