Senior Android Engineer

My Story: What Makes Me Unique

I am Rhony, a seasoned Android Engineer with 10 years of experience in designing and delivering scalable, high-performance mobile applications for fintech, retail, health tech, and e-commerce industries. What makes me unique is my blend of technical mastery, leadership, and a relentless focus on security and performance. I don’t just build apps. I solve complex challenges, lead teams, and create solutions that drive real business impact.

My journey in mobile development began a decade ago, and over the years, I’ve grown into a technical leader who thrives in fast-paced, collaborative environments. I’ve led teams of 5+ engineers, mentored developers, and contributed to high-traffic platforms used by thousands. My expertise in optimizing performance, implementing robust security, and deploying seamless user experiences has been a cornerstone of my career.

What truly sets me apart is my commitment to innovation and continuous growth. I stay ahead of industry trends by integrating cutting-edge tools and architectures like Jetpack Compose, modularization, and AI-driven development into my work. My deep knowledge of mobile security (OWASP MAS, cryptography, Play Integrity API) has reduced mobile fraud by 95% in previous roles, ensuring the apps I build are secure, reliable, and compliant.

My Experience: A Decade of Impact

Over the past 10 years, my career has been defined by leadership, innovation, and a passion for excellence:

1. Leadership and Collaboration

   • Led teams of 5+ engineers, mentored mid/senior developers, and collaborated with product managers, designers, and architects to deliver high-impact projects.
   • Bridged gaps between technical and non-technical stakeholders to align vision and execution.

2. High-Traffic Platforms

   • Built and optimized consumer-facing apps for fintech, retail, and health tech, supporting 10K+ daily transactions and 1M+ users.
   • Focused on performance optimization, modular architecture, and scalability to ensure seamless experiences.

3. Mobile Security & Performance

   • Implemented OWASP MAS, cryptography, and Play Integrity API to reduce mobile fraud by 95%.
   • Achieved 80% performance improvements and 60% app size reduction through optimizations.

4. End-to-End Development

   • Managed Google Play and App Store submissions, technical documentation, and automation testing for seamless deployments.
   • Developed apps from scratch, including a retail app with 5 major features (home, product list, authentication, payment).

5. Innovation & AI Integration

   • Leveraged AI tools (Jetbrains AI, Copilot, Gemini and Ollama) to boost productivity and maintain code quality.
   • Explored Compose Multiplatform to share business logic and UI across iOS and Android.

What I’m Looking For

I’m seeking Android Engineer III, Senior Android Engineer, Lead Android Engineer, Lead Mobile Engineer, Technical Program Manager or Product Engineer roles where I can leverage my decade of expertise to drive impact. Here’s what I bring to the table:

✅ Technical Excellence

• Kotlin (8+ years), Jetpack Compose (2+ years), MVVM (7+ years), modularization (7+ years), Hilt/Dagger, Koin.
• Mobile security (OWASP MAS, cryptography, Play Integrity API).

✅ Leadership & Collaboration

• Proven ability to lead teams, mentor engineers, and thrive in agile/international environments.

✅ High-Impact Projects

• Experience building high-traffic platforms for fintech, retail, and health tech.

✅ Innovation & Efficiency

• Passion for AI tools, automation, and modern architectures.

✅ Freelance/Contract Ready

• Equipped with MacBook Pro M1 Pro (16GB RAM), PC (64GB RAM), and Android/iOS test devices.
• Open to freelance, contract, or full-time roles (European and Asian time zones).

Why Hire Me?

If you’re looking for a Senior or Lead Android Engineer who can lead teams, optimize performance, and deliver secure, high-quality apps, I’m the right fit. My 10 years of experience, technical expertise, and leadership ensure I can drive impactful results for your projects.

Let’s connect and discuss how I can contribute to your team’s success!