PPAT - Power software Developer

6 days ago

Hyderabad, India TestCore IT Solutions Pvt. Ltd. Full time

PPAT – Power Software Developer

Experience: 4+ years


Key Responsibilities:

  • Power Management Software Development
  • Develop and optimise platform-specific power management features on SoCs (based on custom Oryon CPUs).
  • Implement DVFS (Dynamic Voltage and Frequency Scaling), Sleep/Wake logic, and rail/clock gating across CPU, NPU, GPU, and DSP domains.
  • Integrate with Power Management ICs (PMICs) and configure resource power managers (RPMh, RSC).
  • Low Power Mode Enablement
  • Enable platform deep sleep, suspend-to-idle, and system sleep states tailored for Always-On (AON) use cases.
  • Validate retention/restore sequences of SoC subsystems and memory during low-power modes.
  • Integrate SPMI-based communication with PMIC for power domain control.
  • Thermal & Performance Scaling
  • Develop and tune thermal mitigation policies using sensors and thermal zones.
  • Interface with Battery Management System (BMS) and configure thermal trip points.
  • Implement CPUFreq/DevFreq drivers with QoS-aware thermal throttling and performance caps.
  • Power & Thermal Characterization
  • Measure and optimize platform power (active and idle) using Trepn Profiler, QDART, QPST, and onboard fuel gauges.
  • Perform power regression analysis across software releases and feature integrations.
  • Work with system architects to define performance-per-watt KPIs for devices (AI laptops, edge compute systems).
  • Firmware and Bootloader Integration
  • Collaborate with UEFI/TF-A developers to manage early-stage power initialization.
  • Coordinate with XBL, ABL, and UEFI teams for seamless handoff of power states to Linux/Windows OS.
  • Debug & Bring-up Support
  • Triage system-level power and thermal issues with QXDM, QPST, kernel logs, ftrace, trace32, JTAG.
  • Work with silicon validation teams to debug board-level or SoC-level anomalies in power delivery or heat dissipation.
  • Cross-Team Collaboration
  • Partner with PMIC, platform, kernel, BSP, and thermal teams to co-design efficient power solutions.
  • Support OEM/ODM partners in tuning and validating power features for commercial products (laptops, tablets).
  • Contribute to system-level test plans and validations for power and thermal readiness at EVT/DVT stages.


Required Expertise:

  • Qualcomm-Specific Knowledge
    : RPMh, SPMI, TSENS, CPR (Core Power Reduction), Oryon CPUs, Hexagon DSPs, Adreno GPU, AI accelerators.
  • Tools
    : QXDM, QPST, Trepn Profiler, QDART, Dragonboard/CRB.
  • OS & Driver Development
    : C/C++ for Linux/Windows kernel (power/thermal subsystems), AOSP/Yocto PMIC & thermal drivers.
  • Power Profiling & Tuning
    : Trepn, PowerTOP, ftrace, perf, RAPL-like interfaces.
  • Debugging
    : Kernel/ADB/QXDM log analysis, JTAG, boot tracing, event timelines.


Preferred Qualifications:

  • Experience with reference or commercial platforms.
  • Linux on ARM64 & power management on ARM64 SoCs.
  • Modern thermal management techniques for fanless laptops/ultrabooks.
  • Exposure to AI performance-power optimisation (e.g., NPU scaling for LLM workloads).

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