Mobile Software Engineer · Contractor · Consultant
Building High-Performance Mobile Apps for Businesses & Startups
With over 8 years of experience in native Android & iOS development, I specialize in building scalable, high-performance mobile applications that drive real impact. Whether you’re launching a new product or optimizing an existing app, I bring a strategic, user-focused approach to development—ensuring seamless performance, intuitive UI/UX, and long-term maintainability.
Why me?
- 2M+ total downloads across contributed apps, with 750K+ from self-initiated projects
- Expertise in performance optimization, reducing load times & enhancing efficiency
- Proven ability to diagnose & resolve bottlenecks, improving app speed & performance
- Strong focus on UI/UX improvements, working closely with design teams to enhance usability
- Consistently deliver apps that meet or exceed user expectations, backed by positive feedback
My Career
at a Glance
Download my CV for a complete overview of my experience and expertise.
Explore my projects, past roles, and the impact I’ve made in mobile development.
How can I help You?
Building Native Mobile Apps
I can help build a scalable, and maintainable Android or iOS app. I offer freelance, consulting & contract-based development to bring the vision to life.
I am a senior Mobile Software Engineer with 8+ years of experience available as a contractor/freelancer.
I use my passion, skills, and experience to design and implement clean, scalable, and maintainable mobile software solutions for online businesses worldwide.
Android Software Development
• Kotlin, Java
• Jetpack Compose, Epoxy
• Kotlin Coroutines, RxJava, Coroutines, Retrofit, Dependency Injection
• SQLite, Room
iOS Software Development
• Swift, SwitfUI, Combine
• UIKit, XCTest
• Modularization
• Objective-C
Other tools
• MVVM, MVC, MVP
• Clean Architecture, SOLID Principles
• Firebase, GraphQL
• Git, GitHub, GitLab
• Jira, Confluence, SCRUM
Scaling Business with Mobile Strategy
Building a mobile app is just the beginning—scaling it successfully requires a strategic approach, the right technology choices, and a deep understanding of both business and engineering execution. Having co-founded and grown a 10+ person startup, I’ve experienced firsthand the challenges of scaling a business while ensuring the product remains high-performing, adaptable, and user-focused.
Throughout my career, I’ve led and managed teams, balancing technical execution with business growth strategies. I know that in fast-paced environments, efficiency, clear direction, and cross-functional collaboration are key to delivering products that not only work but thrive in the market. I specialize in helping businesses refine their mobile development roadmap, ensuring that their apps are built with scalability in mind, avoiding bottlenecks, and optimizing performance to handle growing user demands.
Scaling isn’t just about adding more features or increasing downloads—it’s about making smart, sustainable decisions. Whether it’s optimizing infrastructure, improving team workflows, or defining a long-term mobile strategy, I help businesses align their technical execution with their broader business goals—ensuring they don’t just build an app, but a mobile ecosystem that fuels their success.
• Mobile Architecture & Scalability
• Performance Optimization
• CI/CD & Automation
• Cross-Platform vs. Native Strategy
• Cloud & Backend Integration
• Data-Driven Decision Making
• Security & Compliance
• Agile & Iterative Development
• Strategic Thinking
• Leadership & Team Management
• Problem-Solving & Decision-Making
• Effective Communication
• Stakeholder Management
• Adaptability & Continuous Learning
• Execution & Accountability
• User-Centric Mindset
Hi, I'm
András Ferencz
I’m a Senior Mobile Software Engineer with over 8 years of experience building impactful, scalable, and high-performance native mobile apps. From working with global businesses to startups, I specialize in Android and iOS development, helping companies turn their ideas into clean, functional apps that delight users.
My journey started as a freelancer, building apps for local businesses, and quickly realized my passion for creating seamless user experiences. Over the years, I’ve had the opportunity to contribute to 1 million+ downloads and improve app performance across several industries, including wedding planning, cloud monitoring, and food delivery.
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