Meet the People Behind App369
Our team combines 12+ years of software engineering experience with deep expertise in mobile, web, and AI technologies. Every project is led by a senior developer who has shipped production apps.
Simon Dziak
Founder & Lead Developer
Simon founded App369 in 2018 with a mission to build technology that drives real business results. With 12+ years of hands-on development experience, he has personally led the delivery of over 150 projects across mobile, web, and enterprise platforms.
His technical expertise spans Flutter, Swift, Kotlin, Vue.js, Node.js, Firebase, and Google Cloud Platform. He specializes in translating complex business requirements into clean, scalable architecture and has a track record of delivering projects on time and within budget.
Before founding App369, Simon built software for startups and enterprises across healthcare, fintech, e-commerce, and education. This cross-industry experience gives him a unique perspective on what makes software projects succeed.
Core Expertise
Recent Articles by Simon
Insights on app development, technology trends, and building successful software products.
Mobile App Handoff Checklist: Code, Accounts and Releases
Use this mobile app handoff checklist to verify source code, store accounts, cloud access, builds and support before accepting an app or changing developers.
Read more →AI Agents for App Development: Industry-by-Industry Guide (2026)
AI agents for app development across healthcare, fintech, e-commerce, real estate, and education. Industry-specific use cases and stack guidance.
Read more →How to Find Remote App Developers Who Use AI Agents (2026)
How to find and hire remote app developers with AI agent skills in 2026. Costs, platforms, evaluation criteria, and agency comparison.
Read more →Firebase Security Rules: The Complete Guide for App Developers (2026)
Firebase security rules complete guide for 2026: Firestore rules, role-based access control, data validation, and Cloud Functions for server-side protection.
Read more →Flutter Security Best Practices: Protecting Your App in 2026
Flutter security best practices for 2026 — secure storage, API key protection, SSL pinning, code obfuscation, and AES-256 encryption explained in detail.
Read more →GEO: The Complete Guide to Generative Engine Optimization (2026)
Generative engine optimization (GEO) gets your content cited by AI search engines. Learn the 9 proven methods from Princeton research in this 2026 guide.
Read more →Work with Our Team
Every project at App369 is led by a senior developer. Get a free consultation and discuss your project directly with our team.