Senior Android Developer - Real-Time Mission-Critical Apps

Kontron

Wien

Hybrid

EUR 55,000 - 75,000

Full time

14 days+

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Benefits offered by this job

Flexible work hours

Work from home

Training opportunities

Modern office in Vienna

Team events

Meal vouchers

Transportation allowance

Job summary

Kontron Transportation is seeking an experienced Senior Android Developer to architect, build, and maintain its next-generation Mission Critical Communications applications for ruggedized devices in Vienna. You will join the Mobile App Development team to deliver high-reliability features ensuring low latency and secure operations in public-safety environments.

The role requires 5+ years of Android development, strong networking knowledge (TCP/UDP, WebSockets), and hands-on experience with

Qualifications

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.

Responsibilities

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.