Software Engineer in Test, Core Technology (12-month contract)

As a Software Engineer in Test at Nex, you will own stability and reliability testing for the Motion Development Kit (MDK), firmware, and hardware modules that power Nex Playground's AOSP-based motion-sensing device. You will build automated test frameworks, stress/soak testing infrastructure, and validation tools that catch instability, regressions, and hardware-integration failures before they reach production. You will work closely with the Framework Engineering and firmware/hardware teams to embed testability across the full Android stack, from low-level sensor drivers and HAL layers up through the MDK APIs that game developers build on .

This role sits within a small, highly technical team that values both specialization and collaboration, with clear ownership of quality across core technology areas .

You are drawn to solving hard reliability problems in systems where hardware, firmware, and Android software all have to work together flawlessly, day after day. You care deeply about long-run stability, not just passing a test once, but proving a system holds up under sustained load, edge cases, and real-world conditions. You thrive in environments where deep systems debugging, Android/AOSP internals knowledge, and rigorous testing discipline directly shape what the platform can confidently ship .

• →Design and build automated stability and reliability test frameworks for the Motion Development Kit (MDK), firmware, and hardware modules on an AOSP-based platform
• →Develop soak testing, stress testing, and endurance testing pipelines to surface memory leaks, crashes, thermal issues, ANRs, and long-running failures
• →Build test harnesses and hardware-in-the-loop (HIL) rigs to validate sensor, camera, and motion-tracking hardware under real and simulated conditions
• →Create regression suites for firmware, HAL, and MDK releases, integrated into CI/CD to catch stability issues pre-release
• →Investigate, reproduce, and drive root-cause analysis of field failures, crashes, kernel panics, and intermittent hardware/firmware defects using Android bug reports, logcat, and kernel logs
• →Define and track reliability metrics such as MTBF, crash rates, ANR rates, and failure recurrence across hardware revisions and firmware/AOSP builds
• →Partner with firmware, hardware, and platform engineers to define quality gates and exit criteria for new hardware/firmware/AOSP releases
• →Write clean, well-tested test code and tooling that raises the engineering bar across the team
• →Build dashboards and reporting for test coverage, defect trends, and release stability
• →Participate in code reviews and contribute to shared tools, infrastructure, and cross-role projects (20% Time)
• →Work with the dual-leadership model (Engineering Manager and Tech Lead) to align on quality priorities and technical direction
• →Document test strategies, systems, and findings to support team knowledge sharing

• 3+ years of professional experience in software test engineering, reliability engineering, or QA for embedded/firmware, Android, or hardware-integrated systems
• Proficiency in Python, with experience in at least one systems language (C++, C#, Java, Rust, or Go)
• Hands-on experience with stability, stress, soak, or endurance testing methodologies
• Experience testing Android/AOSP platforms, HAL, embedded firmware, device drivers, or hardware modules (sensors, motion tracking, cameras, or similar)
• Strong debugging skills across hardware, firmware, and software layers, including logcat, kernel logs, bug reports, logic analyzers, or serial/hardware diagnostics
• Experience building or maintaining CI/CD pipelines and automated regression suites

• Experience with AOSP build systems (Soong/Make), Android Test Harness, or Vendor Test Suite (VTS)/Compatibility Test Suite (CTS)
• Experience with hardware-in-the-loop (HIL) test rig design and automation
• Familiarity with embedded Linux, Android kernel internals, and Treble/HAL architecture
• Knowledge of communication protocols (I2C, SPI, UART, BLE) used in sensor and firmware integration
• Experience with reliability metrics and frameworks (MTBF, FMEA, fault injection testing)
• Familiarity with motion sensing, IMUs, computer vision, or signal processing validation
• Experience working in small, high-performance technical teams
• Background in consumer electronics, robotics, or Android-based hardware products
• Passion for pushing reliability standards and deep root-cause problem-solving