Dear Hiring Manager, I am writing to express my interest in the Mobile Android & iOS Developer position at this company. With strong experience in designing, developing, and maintaining high-quality mobile applications, I am confident in my ability to contribute effectively to your development team. Over the past 10 years, I have developed and deployed mobile applications for both Android and iOS platforms using technologies such as Kotlin, Java, Swift, and Flutter/React Native. I have hands-on experience with Android SDK, Jetpack components, SwiftUI/UIKit, RESTful APIs integration, Firebase, and third-party libraries. My focus has always been on building scalable, maintainable, and user-friendly applications while following best practices in clean architecture and agile development. In my role at previous company, I successfully: Designed and implemented end-to-end mobile solutions for both platforms Improved app performance and reduced crash rates through optimization and testing Collaborated closely with UI/UX designers, backend developers, and product teams Published and maintained applications on Google Play Store and Apple App Store I am particularly drawn to this company because of your commitment to innovation and delivering impactful digital solutions. I am eager to contribute my technical expertise, problem-solving skills, and passion for mobile development to help build seamless user experiences. I would welcome the opportunity to further discuss how my background and skills align with your team’s goals. Thank you for considering my application. I look forward to the possibility of contributing to your organization. Sincerely, Rostislav Vetterman

Rostislav Vetterman

Dear Hiring Manager, I am writing to express my interest in the Mobile Android & iOS Developer position at this company. With strong experience in designing, developing, and maintaining high-quality mobile applications, I am confident in my ability to contribute effectively to your development team. Over the past 10 years, I have developed and deployed mobile applications for both Android and iOS platforms using technologies such as Kotlin, Java, Swift, and Flutter/React Native. I have hands-on experience with Android SDK, Jetpack components, SwiftUI/UIKit, RESTful APIs integration, Firebase, and third-party libraries. My focus has always been on building scalable, maintainable, and user-friendly applications while following best practices in clean architecture and agile development. In my role at previous company, I successfully: Designed and implemented end-to-end mobile solutions for both platforms Improved app performance and reduced crash rates through optimization and testing Collaborated closely with UI/UX designers, backend developers, and product teams Published and maintained applications on Google Play Store and Apple App Store I am particularly drawn to this company because of your commitment to innovation and delivering impactful digital solutions. I am eager to contribute my technical expertise, problem-solving skills, and passion for mobile development to help build seamless user experiences. I would welcome the opportunity to further discuss how my background and skills align with your team’s goals. Thank you for considering my application. I look forward to the possibility of contributing to your organization. Sincerely, Rostislav Vetterman

Available to hire

Dear Hiring Manager,

I am writing to express my interest in the Mobile Android & iOS Developer position at this company. With strong experience in designing, developing, and maintaining high-quality mobile applications, I am confident in my ability to contribute effectively to your development team.

Over the past 10 years, I have developed and deployed mobile applications for both Android and iOS platforms using technologies such as Kotlin, Java, Swift, and Flutter/React Native. I have hands-on experience with Android SDK, Jetpack components, SwiftUI/UIKit, RESTful APIs integration, Firebase, and third-party libraries. My focus has always been on building scalable, maintainable, and user-friendly applications while following best practices in clean architecture and agile development.

In my role at previous company, I successfully:
Designed and implemented end-to-end mobile solutions for both platforms
Improved app performance and reduced crash rates through optimization and testing
Collaborated closely with UI/UX designers, backend developers, and product teams
Published and maintained applications on Google Play Store and Apple App Store

I am particularly drawn to this company because of your commitment to innovation and delivering impactful digital solutions. I am eager to contribute my technical expertise, problem-solving skills, and passion for mobile development to help build seamless user experiences.

I would welcome the opportunity to further discuss how my background and skills align with your team’s goals. Thank you for considering my application. I look forward to the possibility of contributing to your organization.

Sincerely,
Rostislav Vetterman

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert

Language

English
Fluent
Polish
Fluent

Work Experience

Senior Mobile Developer at Wall Street Mobile Apps, US
September 1, 2023 - Present
Architected a scalable telemedicine and mobile workforce platform enabling in-home service delivery across newly launched regional markets, reducing market launch time. Designed and implemented an automated scheduling and dispatch system that increased completed appointments through optimized field routing and real-time availability tracking. Integrated structured clinical protocols and digital NP approvals workflows, reducing approval turnaround time while maintaining operational compliance standards.
Full Stack Mobile Developer at iEngageIT, UK
January 1, 2019 - August 1, 2022
Developed a cloud-based scheduling and dispatch ecosystem supporting high-volume e-commerce and logistics-style field operations, increasing service coverage efficiency. Implemented distributed systems architecture to support geographically dispersed contractors operating in remote environments, reducing latency. Built integrated telemedicine modules enabling real-time clinical consultations within mobile workflows, improving patient session completion rates.
Mobile Developer at DAC.digital, Poland
April 1, 2016 - December 1, 2018
Engineered enterprise-grade mobile service applications for global IT consulting clients delivering large-scale enterprise solutions in distributed environments. Designed backend systems supporting structured clinical protocols and workflow automation, reducing manual processing time. Collaborated with enterprise stakeholders to digitize appointment scheduling systems, increasing operational transparency.

Education

Bachelor’s Degree at Budapest University of Technology and Economics
January 1, 2012 - January 1, 2016

Qualifications

Android App Development with Kotlin
January 1, 2021 - March 12, 2026
Flutter Application Development
January 1, 2025 - March 12, 2026
React Native Development
January 1, 2025 - March 12, 2026
iOS App Development with Swift
January 1, 2024 - March 12, 2026

Industry Experience

Healthcare, Software & Internet

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert

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