Sep 2021 – Feb 2024 · 2 yrs 5 mos · Cambridge, England, United Kingdom

• Part of Arm’s Open Source Software group, contributing to the bring-up and enablement of the Arm Total Compute Reference Design Platform for Mobile. My work spans across the full software stack and includes:
• Bring-up and validation on Arm Fixed Virtual Platforms (FVPs) using Total Compute software stacks
• Developing, debugging, and upstreaming patches; backporting security-critical features in the Linux kernel
• Performing unit testing, code reviews, and maintaining robust cross-functional collaboration
• Writing and maintaining technical documentation
• Software stacks I work with:
• Trusted Firmware-A (TF-A), Hafnium, OP-TEE, U-Boot, Linux Kernel
• OS layers: Buildroot, Debian, Android
• Highlights of my contributions:
• Enabled and validated Arm processor features such as MTE (Memory Tagging Extension), BTI (Branch Target Identification), and PAUTH (Pointer Authentication) in both non-secure (Linux kernel) and secure worlds (Hafnium, OP-TEE)
• Integrated and validated Mali GPU drivers across Total Compute platforms using Wayland/Weston and Arm’s DDK test frameworks
• Collaborated with the DevOps team to build and enhance GitLab-based CI pipelines, contributing reusable test templates and LAVA-based automation for platform validation

Dec 2018 – Aug 2021 · 2 yrs 8 mos

• While owning QDSS responsibilities, I concurrently took initiative in delivering key features on a new RISC-V based Wi-Fi SoC platform, leveraging my core embedded expertise:
• RTOS Porting (ARM → RISC-V): Successfully ported the RTOS kernel from ARM to RISC-V architecture. Developed RISC-V ISA-compliant assembly routines and modified kernel C source to align with RISC-V architectural specifications.
• Interrupt Subsystem Bring-up: Integrated and validated the CLIC interrupt controller on the new Wi-Fi SoC. Verified key interrupts (UART, WDOG, TIMER) using emulation platforms in close collaboration with cross-functional teams.
• Power Management Implementation: Engineered core low-power features including Deep Sleep, Light Sleep, and Warm Boot sequences for the SoC. Enabled stable power transitions despite absence of retention circuitry.
• Context Save/Restore Framework: Designed and implemented a lightweight framework to retain hardware and CPU context across deep sleep cycles. Developed client-facing APIs to register for context management of hardware blocks and CPU state.
• Cross-functional Leadership: Owned project planning, driver development, and stakeholder sync-ups. Managed cross-platform dependencies and maintained alignment across teams throughout execution.

Mar 2016 – Nov 2018 · 2 yrs 8 mos

• As part of the core platform team, I led development and validation of QDSS drivers — a key debug and trace infrastructure based on ARM CoreSight, integrated into Qualcomm Snapdragon SoCs (Mobile / IoT / Automotive). QDSS enables capture of software and hardware traces (ETM, STM) to Trace Buffers or DDR for advanced profiling and debug capabilities.
• End-to-End QDSS Validation: Delivered production-quality QDSS driver software across multiple Snapdragon SoCs (3G/4G/5G) during early bring-up phases. Drove successful Customer Sample releases through close collaboration with hardware, architecture, tools, integration, and PM teams.
• Automation and Efficiency Gains: Designed and developed Bash and Python-based test automation for QDSS bring-up. This significantly reduced tool dependency and improved validation turnaround time by 50%.
• Low Power Debug Enablement: Spearheaded QDSS software design for low-power use cases (e.g., deep sleep / rock-bottom modes), enabling trace collection even in ultra-low-power scenarios critical for system stability analysis.
• Support Across Product Lifecycles: Actively contributed to QDSS support for both upcoming 5G SoCs and legacy platforms – including bug fixes, driver updates, and feature enhancements.
• Cross-Team Enablement: Conducted QDSS knowledge sessions for internal teams, enabling broader adoption of powerful debug features across hardware/software verticals. Helped multiple teams drastically reduce debug turnaround time (TAT) for complex HW/SW issues.

Sep 2014 – Feb 2016 · 1 yr 5 mos · Pune Area, India

• Enabled and tested a proprietary Linux-based file system driver for SAN devices, enhancing customer satisfaction.
• Successfully ported the proprietary file system to the latest stock kernel from kernel.org, ensuring compatibility and performance.
• Conducted thorough sanity and unit testing of drivers, leading to improved reliability and reduced bugs.

May 2013 – Aug 2014 · 1 yr 3 mos · Vadodara, Gujarat, India

• Collaborated with hardware teams to review schematics and provide software-driven design suggestions.
• Coordinated with chipset vendors like Cavium and Octasic to enhance product capabilities.
• Developed and integrated Realtek PHY driver support in U-Boot, enabling remote kernel loading.
• Customized SDKs for new hardware platforms, improving overall system performance and functionality.