# Mihai Parparita > Engineer at Sierra Location: San Francisco Bay Area, United States Profile: https://flows.cv/mihaiparparita ## Work Experience ### Founding Engineer @ Sierra Jan 2023 – Present | San Francisco Bay Area • First hire, brought up infrastructure, implemented agent embedding SDK and many other features leading up to the initial launch in early 2024. • Designed and implemented voice architecture for agents, expanding Sierra's reach from chat to voice in the fall of 2024 • Developed tooling and processes for externalizing Sierra's Agent SDK and turning it into a true developer platform in 2025 • Developed code review norms, gave many brownbags, did formal and informal mentorship, organized “Gardening Weeks” and other work to scale up the engineering team. ### Member Of Technical Staff @ Tailscale Jan 2022 – Jan 2023 | San Francisco Bay Area • Completed a port of Tailscale to the browser/WebAssembly and implemented the Tailscale SSH Console feature using this new capability. • Implemented fast user switching, Shortcuts support and other features in the macOS and iOS clients. • Spelunked through the Darwin kernel to find useful system calls • Instrumented and built data pipelines and visualizations to better understand mobile battery use. ### Distinguished Engineer @ Slack Jan 2021 – Jan 2022 | San Francisco Bay Area • Designed and implemented the zero-to-one phase of projects to incorporate Quip technologies into Slack, forming the basis for the Slack Canvas feature. ### Distinguished Engineer @ Quip Jan 2012 – Jan 2022 | San Francisco Bay Area • Member of initial engineering team, implemented cross-platform editing surface and many other features leading up to the initial launch in 2013. • Led implementations of the initial versions of commenting, spreadsheets, tasks and presentations. • Conceived and led the transition to a new client-side data model and port to React that enabled the launch of offline-capable high-performance desktop apps. • Created and led “Client Infra” team to modernize the technology stack (including a port to TypeScript), improve developer productivity and serve as a consulting resource to the rest of the organization. • Did many special projects, prototypes of possible directions, and moved around as needed based on organizational needs. • Gave many tech talks, did formal and informal mentorship, organized “Fixit Fridays” and other work to scale up the engineering team. Quip was acquired by Salesforce in August 2016 and moved into the Slack product unit in July 2021. ### Google Chrome - Staff Software Engineer @ Google Jan 2010 – Jan 2012 | San Francisco Bay Area • Focused on WebKit quality and reliability; fastest external contributor to become a WebKit reviewer. • Improved and created infrastructure for the layout test regression-catching system. • Made several JavaScript events asynchronous (for performance and security), improved spec compliance of HTML5 history and canvas features. • Part of WebKit gardener rotation and other grungy work. • Tech lead of Chrome Apps and Extensions. Made several platform improvements and led the team that launched packaged apps at Google I/O 2012. ### Google Reader - Staff Software Engineer @ Google Jan 2005 – Jan 2010 | Greater New York City Area • Founding member of the team, and frontend tech lead since 2006. • Primary implementor of the redesigned user interface that brought Reader widespread praise. • Co-designed and implemented the first friends functionality in Reader, which increased sharing by 25%. • Conceived and implemented several other features, including Trends, the iGoogle gadget, PubSubHubbub support, UI refreshes, integrations with other Google products. • Implemented several "engineer productivity" features (automatic recompilation of JavaScript, templates and CSS in development, automatic flagging of duplicate RPCs, logging of RPCs per HTTP request). • Ported Reader to the Closure Library and Closure Compiler and contributed to both. • Implemented backend improvements that reduced CPU usage and storage layer lookups by 50%. • Implemented frontend and UI performance improvements that reduced startup time by 45%. Created dashboard and improved tracking of performance issues. ### AdWords Frontend - Software Engineer @ Google Jan 2004 – Jan 2006 | Greater New York City Area • Joined Notification Center (feature that allows customer representatives to receive account alerts) halfway through development. Closed 150 bugs (roughly half in a 4 week period leading up to the initial launch). • Tracked down several performance issues, implemented a monitoring dashboard. • Co-designed and implemented the external version of the Notification Center described above (launched as Account Snapshot), one of the first AJAX-y user-facing features in the AdWords frontend. • Part of build cop rotation for the ads frontend (spanning several timezones and 100 engineers). ### Performance Group - Intern @ VMware Jan 2003 – Jan 2003 | San Francisco Bay Area • Analyzed performance impact of VMotion, a key in-development feature of VMware VirtualCenter. • Investigated performance issues of the server component of VirtualCenter. ### Picture It!/MSN Photos - Intern @ Microsoft Jan 2002 – Jan 2002 | Greater Seattle Area • Developed an add-in for Visual C++ .NET that allowed Javadoc-like functionality (documentation alongside the codebase, with browsable and searchable output formats). • Created three tools using ASP.NET and C# to help manage configuration files. ## Education ### Bachelor of Science - BS in Computer Science Princeton University ## Contact & Social - LinkedIn: https://linkedin.com/in/mihai-parparita - Portfolio: http://persistent.info/ - GitHub: https://github.com/mihaip --- Source: https://flows.cv/mihaiparparita JSON Resume: https://flows.cv/mihaiparparita/resume.json Last updated: 2026-04-11