# Ranesh Saha > Senior Software Engineer at Microsoft Location: Seattle, Washington, United States Profile: https://flows.cv/ranesh ## Work Experience ### Senior Software Engineer, Office - Performance @ Microsoft Jan 2024 – Present | Redmond, Washington, United States • Conducted performance profiling of desktop Office apps, identifying and resolving bottlenecks through optimizations such as better inlining, intrinsics, and manual vectorization for performance-critical sections. • Collaborated with silicon partners, including Intel and Qualcomm, to ensure OEM benchmarks using Office run efficiently on the latest hardware. Optimizations also resulted in a 15% improvement in Procyon® productivity benchmark scores. • Implemented ARM-specific optimizations, including memory ordering considerations, NEON implementations, and the use of ARM intrinsics, achieving performance parity with x64 before the release of ARM-based Copilot+ PCs • Worked with OS team partners to improve video encoding and decoding performance in PowerPoint, resulting in a 70% reduction in presentation video export time across all percentiles. • Integrated an optimized compression library into Office, utilizing SIMD and other hardware optimizations, resulting in up to an 85% reduction in file save times for Excel. ### Senior Software Engineer, Office - React Native Android @ Microsoft Jan 2022 – Jan 2023 | Redmond, Washington, United States • Reduced start-up time of React Native experiences in Office on Android by 20% and memory consumption by 40% by switching to the Hermes runtime engine and integrating Hermes bytecode compilation into the Office build system. • Maintained a React Nativefork using AzureDevOps for Office customizations. Setup CI/CD pipelines, automated merges with React Native from Meta, and adapted build to run on Windows shell instead of BASH to enhance developer experience. • Authored a Python package to download React Native dependencies as a Maven repository for offline Gradle builds, and eliminated native library load errors by auto-generating the load order. ### Software Engineer II, Office - UX Platforms @ Microsoft Jan 2018 – Jan 2022 | Redmond, Washington, United States • Developed the shared C++ back-end and front-end for the home page UX used across all Office apps on Windows, streamlining operations related to creating, opening or searching for documents. • Improved app home page startup time by up to 42% and app boot time by up to 22% through profile based optimizations and deferring non-essential operations until feature usage. ### Software Engineer I, Office - Telemetry @ Microsoft Jan 2016 – Jan 2019 | Redmond, Washington, United States • Designed and implemented data processing pipelines and developed live reports to visualize customer command usage for Office apps. These reports were utilized organization-wide to support data-driven product decisions. • Engineered advanced SQL queries to optimize large-scale data analysis of customer command usage, achieving a 50% reduction in monthly report processing times and eliminating job timeouts. • Designed and implemented web based reports using JavaScript, HTML, and CSS to visually present command usage data. Integrated filters for app, OS, time range, build ranges, and UI surfaces to enhance data analysis and user experience. ### Firmware Developer Co-op @ PMC-Sierra Jan 2015 – Jan 2015 • Developed low level firmware for an RF chip running on a MIPS processor in C • Responsible for developing new features requested by customers as well as resolving bugs. • Responsible for developing a regression test framework for exhaustive testing of all firmware APIs using python and tcl. Utilized Jenkins to run regression tests periodically and report any failures. • Responsible for developing a web user interface for customers to be able to control the chip. • Testing of RF performance using various equipment such as spectrum analyzers and signal generators. • Writing instrument control drivers and libraries for spectrum analyzers and signal generators. ### Firmware Developer Co-op @ Avigilon Jan 2014 – Jan 2014 • Developed firmware running on HD security cameras in C and C++ as well as web interfaces using HTML and JavaScript in a Linux environment. • Responsible for resolving high priority bugs including customer escalations • Responsible for developing new features to run on released cameras • Responsible for communicating progress reports and suggestions for improving firmware in weekly meetings with firmware team. ### Intern Research Engineer @ Boreal Genomics Jan 2013 – Jan 2013 • Conducted experimental research and developed a protocol for a novel method of detecting unknown and potentially cancerous mutations. • Demonstrated extreme safety and caution when working in bio hazardous rooms and when handling chemicals that act as neurotoxins. • Performed essential molecular biology laboratory techniques such as PCR amplification, post PCR cleanup, sample preparation and electrophoresis gel casting. • Gained proficiency in the use of precision measurement tools and maintaining a clean work environment to prevent cross contamination of samples. • Presented findings in weekly presentations to the rest of the research and applied research team. ### Cashier @ Your Dollar Store with More Jan 2012 – Jan 2012 | 398 W. Broadway • Organized various aisles according to the most efficient and aesthetically pleasing layout. • Performed specialty services, such as placing orders and filling helium balloons for customers in a quick and friendly manner. ### Cashier @ Canadian Tire Jan 2009 – Jan 2010 | 2830 Bentall St. • Exhibited excellent verbal communication when informing customers of the “Jump Start for Kids” foundation, resulting in obtaining the most donations out of any other employee. • Entrusted to take on additional responsibilities as a customer service representative as well as working in all departments and answering customer’s product related inquiries. • Demonstrated efficient and fast service when clearing line ups of up to twenty customers. ## Education ### Professional Masters in Computer Science and Engineering in Computer Science University of Washington Jan 2025 – Jan 2027 ### Bachelor of Applied Science (BASc) in Engineering Physics The University of British Columbia Jan 2011 – Jan 2016 ### IB Diploma Britannia Secondary School Jan 2006 – Jan 2011 ## Contact & Social - LinkedIn: https://linkedin.com/in/ranesh-saha --- Source: https://flows.cv/ranesh JSON Resume: https://flows.cv/ranesh/resume.json Last updated: 2026-03-22