JobPosting
title: Senior Software Engineer - Firmware + Audio
description: We are seeking a Senior Software Engineer with deep expertise in audio subsystems to own end-to-end audio delivery on Windows-based Surface devices. In this role, you will be the technical authority driving audio bring-up, driver ingestion, quality, and validation across flagship Surface programs – from early platform bring-up. You will architect solutions across the hardware-firmware-driver-APO boundary, mentor junior engineers, and collaborate closely with silicon partners, audio processing vendors, and cross-functional teams to deliver a world-class audio experience on premium consumer hardware. Responsibilities Technical ownership of the audio subsystem for flagship Surface programs, driving milestone exit criteria and ensuring zero-regression driver ingestions. Architect and design audio solutions spanning the full stack: hardware endpoints -> DSP firmware -> kernel drivers -> APO pipeline -> user-mode services. Lead audio bring-up and endpoint validation on new platforms, including speaker, microphone, headset jack, SoundWire, and Bluetooth audio paths. Develop, debug, and maintain Windows audio/media class drivers (WDM/WDF) and Audio Processing Objects (APOs) in the silicon audio stack (DSP RPC, Audio Core, APO). Drive partner engagements – coordinate driver ingestion cycles with silicon and IHV partners; validate, triage, and qualify driver packages before integration. Own root-cause analysis of complex audio quality issues (crackling, glitching, latency, distortion) using hardware-level analysers, DSP diagnostics, and Windows audio traces (WPR/WPA, AudioDG, MFTrace). Integrate and validate third-party audio processing pipelines (DAX, Microsoft Effect Pack, Voice Clarity) within the Windows APO chain. Mentor and grow team members – conduct code reviews, establish debugging best practices, and distribute domain knowledge across the team. Drive SelfHost stability and audio backlog resolution, proactively identifying systemic issues and unblocking critical path…
date posted: 2026-08-04T16:12:18.313Z
valid through: 2026-10-03T16:12:18.313Z
direct apply: false
occupational category: Engineering
industry: Technology
skills: C
skills: C++
skills: Windows kernel-mode drivers
skills: DSP-based audio subsystems
skills: Audio signal processing
skills: Windows audio architecture
skills: Audio platforms (ADSP,APO) on ARM64/X86-based Windows devices
skills: Audio enhancement stacks: Dolby DAX/Atmos, Microsoft Effect Pack, Voice Clarity
skills: Bluetooth audio profiles
skills: AI/ML-powered audio features
skills: Automation/tooling for driver validation
hiring organization: Microsoft
  type: Organization
  ticker symbol: MSFT
  founding date: 1975
  number of employees: QuantitativeValue
    value: 228000
job location: Place
  address: PostalAddress
    address locality: Hyderabad
    address region: India
    address country: IN
employment type: FULL_TIME