Mobile App Senior Developer (f/m/d)

Kontron AG; Wien; Hybrid; EUR 55.000 - 70.000; Vollzeit

Benefits dieser Stelle

Flexible work hours

Work from home

Meal vouchers

Company bike

Vacation days

Zusammenfassung

Kontron Transportation in Vienna is seeking an experienced Senior Android Developer to architect, build, and maintain mission-critical mobile apps. You will work on rugged devices and ensure reliability, low latency, and high security in voice, data, and video applications.

The role requires Kotlin, Jetpack Compose, and real-time streaming expertise. Join a cross-functional team in a flexible, remote-friendly environment with strong emphasis on CS/engineering excellence, testing, and continuous

Qualifikationen

• Degree in a technical discipline is required.
• 5+ years of Android development experience.
• Proficiency with Kotlin and Jetpack Compose.
• Experience with real-time media streaming protocols.
• Knowledge of network protocols and security basics.
• Hands-on with automated testing and code reviews.

Aufgaben

• Design, build, and maintain high-performance native Android apps using Kotlin.
• Architect low-latency streaming and communication protocols (SIP, RTP, WebRTC, MCX).
• Optimize power, memory, and performance on rugged hardware.
• Implement strong data security measures and encryption.
• Collaborate in an agile team with Jira and Confluence.

Kenntnisse

Android development

Kotlin

Jetpack Compose

Real-time audio/video streaming

Networking protocols

Security practices

Testing frameworks

Agile (Jira/Confluence)

Power management

Ausbildung

Bachelor/Master in CS or Computer Engineering

Degree in Telecommunications

Tools

Jira

Confluence

Android Studio

Jobbeschreibung

Experience Level With Professional Experience

Remote Status Remote Flexible

Salary range EUR 55,000 - 70,000 / year

Type of employment Permanent Appointment

Kontron Transportation is a leading international provider of end-to-end communication solutions for mission-critical networks. Our company focuses on the reliable, efficient, and sustainable production, transmission, and processing of voice, data, and video information. We employ over 700 people at 11 locations across Europe. Our headquarters are located in Vienna.

The satisfaction of our employees is very important to us! We promote teamwork and support our employees in their career planning and professional development. Our commitment to a more sustainable society is clear and reflected in our decisions and CSR initiatives. This is an important part of our leadership style.

To strengthen our team, we welcome experienced professionals, college graduates, and high school graduates who share our Way of Working - characterized by community and success.

As an employer, we value equal opportunity and diversity. We look forward to receiving applications regardless of gender, age, religion/ideology, sexual orientation, ethnicity, or national origin.

For our location in Vienna, we are looking for an experienced Senior Android Developer to architect, build, and maintain our next-generation Mission Critical Communications (voice, data and video). Will be integrated on the Mobile App Development team, working on new functions and features while adapting our flagship Mobile Applications to new devices ensuring the operation in high-stakes environments where reliability, latency, and security are paramount.

• Degree in Telecommunications, Computer Science, Electrical Engineering or a related technical discipline.
• Design, build, and maintain high-performance native Android applications using Kotlin and Jetpack Compose, tailored for ruggedized mobile hardware and specialized handheld devices.
• Architect and implement low-latency real-time audio/video streaming and communication protocols, including SIP, RTP, WebRTC, and 3GPP MCX standards (MCPTT, MCVideo, MCData).
• Optimize background and foreground services to guarantee continuous connectivity, instant call setup times.
• Implement rigorous data security practices, including end-to-end encryption (E2EE), and compliance hardening for public safety standards.
• Establish rigorous testing standards, including automated unit, integration, and stress tests tailored for network jitter, packet loss, and low-battery scenarios.
• Partner closely with our cross-functional engineering squads, seamlessly following our established development processes and agile workflows to keep our release cycles predictable and code quality high.
• Bachelor's or Master's degree in Computer Science, Computer Engineering, or a related technical discipline.
• 5+ years of professional Android development experience with a track record of deploying complex, high-reliability applications to production.
• Deep understanding of networking protocols (TCP/UDP, WebSockets, IP networking, QoS) and real-time media streaming.
• Proven experience managing device power consumption, memory management, and performance profiling under constrained hardware limits.
• Strong background in writing robust, testable code backed by comprehensive unit and UI testing frameworks with a sense of quality for clean code, testing, and code Reviews.
• Passion for collaborating in an agile, interdisciplinary team while using our standard collaboration tools like Jira and Confluence.
• Hands-on experience with 3GPP Mission Critical Services (MCX) or Land Mobile Radio (LMR) is nice to have
• Familiarity with enterprise Mobile Device Management (MDM) rollouts is a plus
• Prior experience in public safety, defense, aerospace, or industrial IoT software development is an advantage

Kontron Transportation is a leading international provider of end-to-end communication solutions for mission-critical networks. Our company focuses on the reliable, efficient, and sustainable production, transmission, and processing of voice, data, and video information. We employ over 700 people at 11 locations across Europe. Our headquarters are located in Vienna.

The satisfaction of our employees is very important to us! We promote teamwork and support our employees in their career planning and professional development. Our commitment to a more sustainable society is clear and reflected in our decisions and CSR initiatives. This is an important part of our leadership style.

To strengthen our team, we welcome experienced professionals, college graduates, and high school graduates who share our Way of Working - characterized by community and success.

As an employer, we value equal opportunity and diversity. We look forward to receiving applications regardless of gender, age, religion/ideology, sexual orientation, ethnicity, or national origin.

For our location in Vienna, we are looking for an experienced Senior Android Developer to architect, build, and maintain our next-generation Mission Critical Communications (voice, data and video). Will be integrated on the Mobile App Development team, working on new functions and features while adapting our flagship Mobile Applications to new devices ensuring the operation in high-stakes environments where reliability, latency, and security are paramount.

Your tasks

• Degree in Telecommunications, Computer Science, Electrical Engineering or a related technical discipline.
• Design, build, and maintain high-performance native Android applications using Kotlin and Jetpack Compose, tailored for ruggedized mobile hardware and specialized handheld devices.
• Architect and implement low-latency real-time audio/video streaming and communication protocols, including SIP, RTP, WebRTC, and 3GPP MCX standards (MCPTT, MCVideo, MCData).
• Optimize background and foreground services to guarantee continuous connectivity, instant call setup times.
• Implement rigorous data security practices, including end-to-end encryption (E2EE), and compliance hardening for public safety standards.
• Establish rigorous testing standards, including automated unit, integration, and stress tests tailored for network jitter, packet loss, and low-battery scenarios.
• Partner closely with our cross-functional engineering squads, seamlessly following our established development processes and agile workflows to keep our release cycles predictable and code quality high.

Your qualification

• Bachelor's or Master's degree in Computer Science, Computer Engineering, or a related technical discipline.
• 5+ years of professional Android development experience with a track record of deploying complex, high-reliability applications to production.
• Deep understanding of networking protocols (TCP/UDP, WebSockets, IP networking, QoS) and real-time media streaming.
• Proven experience managing device power consumption, memory management, and performance profiling under constrained hardware limits.
• Strong background in writing robust, testable code backed by comprehensive unit and UI testing frameworks with a sense of quality for clean code, testing, and code Reviews.
• Passion for collaborating in an agile, interdisciplinary team while using our standard collaboration tools like Jira and Confluence.
• Hands-on experience with 3GPP Mission Critical Services (MCX) or Land Mobile Radio (LMR) is nice to have
• Familiarity with enterprise Mobile Device Management (MDM) rollouts is a plus
• Prior experience in public safety, defense, aerospace, or industrial IoT software development is an advantage

Our offer

As a leading international company in the mission-critical networks industry, we offer exciting and varied roles in various fields of expertise. Working with the latest technologies, implementing innovative projects, and collaborating with a wide variety of customers are just a few of the factors that drive the Kontron team.

• Community and Success - these are the values that define how we work together. Join our motivated, international team:
• Open communication with a casual, first-name-only culture across all international locations
• Flexible work hours and the option to work from home
• An environment that welcomes new ideas and encourages initiative
• Personalized training and professional development opportunities based on performance reviews
• A modern office in the Vienna Technology Hub, surrounded by numerous restaurants and excellent infrastructure
• Regular company events and team-building activities
• Many attractive employee benefits (e.g., meal vouchers, workplace health promotion, company bike, additional vacation days for volunteer work and birthdays, transportation allowance)

We offer a competitive gross annual salary starting at EUR 55,000 per year. A higher salary commensurate with your actual qualifications and experience is possible.