> DOU

Android Engineer

Sirin Software

format:Remotecompany:Outsource

aospandroid sdkkotlinjavacc++any one ofcuartusbgpioembedded linuxlinux kernelgithub actionsjiraopensearchunit testing

pythonpytest

englishB2

domainHardware

locationKyiv, Ukraine

> full description

About the Company

Who we are: Sirin Software is an IT service provider established in 2014 with an R&D center in Kyiv. We specialize in Embedded Linux, IoT solutions, and Hardware Design, delivering software and hardware products for clients across the US, Europe, and Asia.

Our mission is to get IoT products to market faster and more cost-effectively than anyone else.

Our site: sirinsoftware.com.

Project Description

We are engineering the next generation of connected intelligent fitness hardware. The device combines a high-performance interactive display, real-time digital weight resistance powered by advanced motor control, and personalized AI coaching into a sleek, wall-mounted kiosk system.

At the core of this experience is a custom Android/AOSP platform running on dedicated embedded hardware (Qualcomm platform). The system must operate with extreme reliability: our software directly interfaces with internal microcontrollers, sensors, and safety-critical motor drivers over low-latency serial buses while driving a responsive UI.

We are looking for an Android Open Source (AOSP) Engineer who bridges the gap between low-level Linux/kernel touchpoints, system-level Android middleware, and high-performance Kotlin services to own the core platform architecture.

What You Need For This Position

AOSP platform engineering background. Experience building, flashing, and maintaining custom AOSP/vendor trees on physical devices (Qualcomm preferred); proficiency with lunch, m, Android.bp/.mk, board configs, PRODUCT_PACKAGES, and OTA generation.
Privileged apps & kiosk services experience. Hands-on work with platform-signed APKs, sharedUserId, priv-app, privapp-permissions allowlists, and persistent services that survive user switches and start before the launcher; handling Doze/App Standby exemptions.
SELinux & device nodes. Ability to write/debug .te policies, file_contexts, and ueventd.rc for custom /dev/tty* nodes to securely own UART/serial links.
IPC & hardware interfacing. Practical knowledge of Binder, Stable AIDL (versioning rules), and HIDL; ability to trace lost data between kernel and apps across serial (termios, TTY, USB-CDC/ACM), GPIO/sysfs, uevents, and wakelocks.
Knowledge of Kotlin (Coroutines/Flow), Java, and C/C++ (NDK) for implementing binary protocols and state machines.
Tooling, diagnostics & testing. Experience with structured logging (Kibana/OpenSearch), logcat/dumpsys/Perfetto, feature flags (LaunchDarkly), Git/CI (GitHub Actions), and unit testing (Robolectric / instrumented tests).
Solid experience with Git, GitHub, and Jira.
Ability to create clear, maintainable technical specifications and code documentation (Doxygen, Wiki, Markdown).
English Proficiency. Upper-Intermediate (B2). Ability to conduct technical discussions, participate in meetings, and write professional documentation/emails for international clients.

Nice to Have

Familiarity with Qualcomm trust architectures (QSEE / TrustZone).
Hands-on experience with hardware/firmware automated test tooling in Python (pytest, pyserial).
Experience working on connected fitness equipment, robotics, or medical devices featuring safety-relevant motor controls and sensor loops.

What We Offer For Your Success

Exciting Projects: work on real physical devices from smart furniture (like smart desks) and automated irrigation systems to smart electricity meters and AI-powered fitness equipment.
Career Growth & Mentorship: clear opportunities for professional development with strong supervision from Senior leads.
Zero Bureaucracy: enjoy a trust-based culture with zero bureaucracy, no micromanagement, and no time tracking—we focus on outcomes, not tracked hours.
Flexible Working Hours: work-life balance with flexible daily start times between 8:00 AM and 11:00 AM.
Paid Time Off: 20 working days of paid vacation, 15 days of paid sick leave, plus extra days off for major life events and public holidays.
Financial Stability & Support: annual performance-based salary reviews and full accounting support for all team members.
Continuous Learning Perks: professional English courses in small groups, along with education and anniversary bonuses.
Hardware & Equipment: provision of all necessary technical equipment and lab tools for your smooth workflow.
Remote or Autonomous Kyiv Office: enjoy the flexibility of remote work or join us at our Podil office, featuring autonomous power, uninterrupted internet, coffee, tea, snacks, and a cozy atmosphere.