■ Developed javascript logic to update schedule for continuously recording events in the Cloud (Cloud DVR). This subsystem interfaces with a Couchbase DB for persistence.■ Optimized tuner allocation logic on a Golang microservice component with a backing Couchbase DB to optimize channel change times. ■ Updated docker containers and kubernetes deployment configurations to support new feature parameters and optimize memory and cpu allocation.■ Triaged and supported debugging live field emergency issues by remotely analyzings system metrics, logs, and isolating issues to the appropriate components or subsystems.■ Wrote javascript and Golang tools to help identify late recording issues and understand impacts to the end user of schedule changes. We used the Plotly js library to provide interactive data visualizations.

■ Created an embedded web-server to cache and serve pages to allow an offline customer experience when the network was unavailable.■ Diagnosed, debugged, and fix long standing difficult to reproduce Java OCAP set-top issues. Employed the Dart programming language and WebGL to generate a dynamic web-based UI running on an embedded Webkit client.■ Developed a QT QML thin-client settop application to provide a modern video browsing UI■ Developed Selenium automation framework for end-to-end testing coverage.■ Developed a Java REST client to handle client recording scheduling requests using Spring and a MongoDB backend.

Embedded Linux Cable Set-top Developer■ Employed Agile methodologies to design, document, and develop DVR scheduling sub-system for mass deployment on hundreds of thousands cable set-top boxes to meet an aggressive schedule and produce early functional prototypes.■ Designed, documented, and developed EPG search database using SQLite, unit-tests, and performance metrics. Optimized schema and SQL queries for UI responsiveness.■ Designed and Implemented socket connections and communications between networked DVR set-tops to resolve scheduling request conflicts for a connected home user experience.■ Developed Python and Bash scripts to collect log files and distill useful information like graphs and backtraces and debugged field-gating issues spanning multiple layers of the software stack. ■ Employed SQLite database to manage DVR recording metadata and scheduling conflicts. This system allows user to prioritize repeat recordings and resolve conflicts per program if desired.

IP Video Client Developer■ Developed an embedded web-server to deliver low-level diagnostic information on an embedded Linux platform by interfacing through the /proc/, IOCTL, and socket API's.■ Implemented a secure bootloader on the set-top box to validate certificates, ensure chain-of-trust, and securely transmit sensitive keys and revocation lists.■ Designed and developed server-side procedures for secure key generation, delivery, and signing for set-top box manufacturing using security-hardened hardware modules and standard security algorithms (AES, RSA, 3DES, ASN.1, PKCS, SHA-1).■ Created and managed CVS and SVN repositories including nightly backups, accounts, permissions, Apache configuration, tree management, official builds, and releases.

Software Configuration Management Engineer■ Automated SCM procedures through all phases: compilation, repository manipulation, change-list generation, and release distribution using Python. ■ Eliminated unnecessary subcomponent builds by reworking the Makefile system.■ Brought world-wide software repository online with databases in Atlanta, India, Cupertino, and Huntsville including continuous database synchronizations.■ Created PHP/JavaScript web-interface to allow real-time visibility of code check-ins and dependencies between check-ins.

Cable Set-top Application Developer■ Developed C/C++ embedded applications compatible across all Cisco's cable set-tops while gaining extensive full software life-cycle experience.■ Designed and implemented PPV and service authorization interaction with the NDS Conditional Access System. Supported upgrade and roll-out at cable head-end which feeds millions of New York users. ■ Refactored portal application's memory management, graphics rendering, and asynchronous networking. Ensured wide-scale deployment quality throughout testing, debugging, release, installation, and maintenance. ■ Designed, wrote, and implemented the Multi-room DVR catalog specification and associated interfaces for client and server. ■ Refactored the base application's interactions with many third-party apps to allow startup loading, prevent focus stealing, and enable screen real-estate negotiations. ■ Developed video-on-demand application using C++ and HTML, XML, and XSLT data to demonstrate viability including playback controls: pause, play, fast-forward, etc.