Led user flagging team of 8 engineers to execute through several directional changes. New EU regulations, and rise of GenAI caused rapid shifts in the org's priorities. Led the team through these changes and successfully launched many high priority projects.- Critical DSA compliance projects (Flag Appeals, Legal Reporting) launched on schedule.- GenAI User Feedback. Team completed ideation, design, implementation, and launch on tight timeline of 1.5 quarters.- Guided Flagging Flow. Modernized stack dramatically improved team's productivity on frontend components.- Flag Lifecycle service. Improved data completeness with asynchronous, low-latency architecture designed to handle highly variable fanout, up to 6 orders of magnitude.- Flag Notifications.

Tech lead for Ridehail API team. Led development of ridehail backend and API from scratch, from internal prototype to production service with high availability. Mentored team of 4 engineers to ship significant new features, including API versioning, pre-scheduled trips, package delivery, and the internal data platform. Technologies: GCP, Cloud Spanner, and BigQuery.Core developer on Java tech stack. Architecture for hot-swapping large maps in routing engine. Vehicle simulation (pure pursuit), with Mapbox GL visualization. Integration with autonomous vehicle partners, including on-device (ROS) and backend-to-backend.Cloud infrastructure. Improvements to build system using Bazel (Java and Protobuf), Kubernetes cluster on GKE, Helm, Stackdriver Monitoring & Logging, Terraform config for GCP.

Shipped two IoT connected cameras, Nest Cam and Nest Cam IQ. Tech lead for Nest Cam IQ video stack. Enabled 24/7 streaming of 4k video over the internet with dynamic bitrate controls based on image content and cumulative usage. Interfaced with encoder vendor to deliver features and critical bug fixes. Mentored and led team of 3 engineers. Technologies: Android/Brillo platform, OpenMAX, multi-threaded C++ with event-driven async I/O.Transcodeproxy: real-time video transcoding service. On-demand, low-latency (# b-frames + 1) h.264 transcoding to lower bit-rates for adaptive live streaming. Helped to maintain compatibility with older players with audio transcoding (Opus to Speex/AAC). Evaluated GPU-powered transcoding using AWS GPU instances. Technologies: Golang, Cgo, ffmpeg (libavcodec), libx264, Docker.Video pipeline engineering. Encoder evaluation, selection, and integration for new 4k video product. Substantially reduced average bitrates in static scenes with encoder tuning. Evaluated encoder performance with user experiments. Evaluated benefits of advanced encoder features (ROI, HEVC, LTR, SVC-T).Cloud backend improvements to support new camera products. Unblocked firmware team by implementing connectivity notification, SPS parsing, JNI Opus and Speex integration, transcoding profile selection, still image capture pipeline, and admin UI in Scala, Python, and Javascript.

Video engineering. Low-latency (under 2s) h.264 video over Wi-Fi using RTP. Bitrate adaptation to network conditions. Jitter buffer implementation with dynamic buffer sizing for low-latency playback. Prototyping to achieve extreme low latency (under 500ms) over the internet.Linux firmware development in C/C++. Low latency audio playback module using ALSA. Optimized computer vision pipeline using Union-Find to speed up connected components. Other focus areas: threading, coroutines, event-driven I/O (libtask, libev); OpenSSL.Embedded firmware development for IoT device. Battery-powered, connected over Bluetooth LE. C firmware running on Cortex-M0 SoC with RTOS-like support libraries. Optimized firmware for strict low power requirements (20 uA average). Improved performance with lightweight sensor fusion (magnetometer + accel) and DSP algorithms. Enabled reliable one-way communication with self-correcting counter prototype.

- Helped develop distributed network filesystem (Ori). Content-based addressing, Rabin-Karp fingerprinting, integration with FUSE. Internal tree-like storage structure inspired by Git.- Publication: "Replication, History, and Grafting in the Ori File System." November 2013

Backend and frontend web development with C#, .NET, ASP.net MVC, Python, Javascript/jQuery, Mercurial. On the dev team of Kiln 2.0 from start to beta release.