Itay Donanhirsh

Walnut Creek, CA, USA

email: itay@bazoo.org

http://itay.bazoo.org

Profile

• Highly motivated and innovative person.
• Rich multidisciplinary experience in both software and hardware.
• Proven ability to initiate projects, design and implement from scratch.
• Ability to take full ownership on projects.
• Very experienced with C/C++, Go, Java, Python, Scala.
• Likes experimenting with Haskell.
• Experienced in RT/Embedded and Distributed Communications systems.
• Rich concurrent programming experience.
• B.Sc. in Physics and Biology from Tel Aviv University, 2006.
• Electronics hobbyist and enthusiast. Likes to develop gadgets on my spare time (see site http://itay.bazoo.org/projects).
• Hebrew native speaker, fluent in English.

Experience

[2016-Now] Software Engineer at Lyft

• Developed and maintained a CI system written in Go that allowed company to scale rapidly while maintaining reliability and reduce costs while experiencing almost no downtme.
• Developed and executed migration plans for transition from old CI system to the new one.
• Took active part on various efforts, such as initiatives to define and improve testing standards company wide.

[2013-2016] Senior Software Engineer at Twitter (NY and SF)

• NY: Discovery and Geo Team Member.

• Data analysis using scalding, summingbird, hadoop.
• Developed Scala/Finagle based services.
• Designed and implemented experimentation framework.
• Designed and implemented load testing for production services.

• SF: Eng Effectiveness (“DevProd”) Team Member:

• Lead effort for dealing with non-deterministic tests.
• Lead CI Orchestration effort, a novel way of coordinating various components in a complex CI system.

[2011 - 2013] Software Engineer at Google NYC

• Infrastructure team member, main maintainer and developer of a cron system in the cloud.

[2010 - 2011] Senior Software Engineer at XIV, an IBM Company

• Responsible for SAS RAS (Reliability, Availability and Sustainability) in the Platform Team, work involving low level work with SCSI controller and disks.

[2007 - 2010] Senior Software Engineer at Imagine Communications

• Design and development of a scalable distributed data plane Embedded Software Mux over Monta Vista OS for MicroTCA platform. Coded in C++. The Mux serves thousands of session simultaneously.
• Initiated, designed and implemented a Python and Bash based systematic cluster configuration tool. The tool takes as input a description of an entire cluster and configures it.
• Design and development of a Java (POJO) control plane application that supervises a large number of MicroTCA cards, supporting redundancy and dynamic configuration.
• Initiated, designed and implemented from scratch in Python a fully working domain-less High-Availability software suit that enables "5-Nines" uptime. Currently running in several major cable MSOs in the US.
• Developed a routing daemon in Bash.
• Adaptation of the Pythonic SCons build system to support multiple products built from the same branch.
• Development of a Ruby based tool that converts data from a textual tabular format to any other format, utilizing the ERB.

[2006 - 2007] Senior Software Engineer at Zoran Microelectronics

• Developed software for a SoC based on ARM9 core over ThreadX OS.
• Designed and implemented an extremely modular zero-copy protocol stack for Mobile Digital Television (MDTV) conforming of DVB-H, T-DMB and DAB-IP standards.

• Layers included: UDP/IP, MPEG2, FLUTE, MPEG4SL, RTP and MSB.

• Programmed hardware drivers.
• Worked with DMA, SPI, etc.
• I was in charge of deployment of the MDTV solution in 3GSM at Barcelona.

[1995 - 2006] Senior Software Engineer at Elbit Systems, Elron Telesoft and NCC

(Started at 1995 as a soldier programmer part of a big communications project at NCC, which was acquired by Elron and then Elbit)

• Worked on a large S&F communication system (50 man-years development time). I was the owner of the following modules, coded in C and C++:

• Custom RT transport layer intended to be used over tactical mediums (low-bandwidth HF/VHF/UHF radios and other Radio-Telephony mediums);
• Development of Network Layer protocols for auto-discovery of neighbor nodes;
• Design and implementation of an automatic distributed directory services for the entire network;
• Responsible for cross-platform software infrastructure (over Unix AIX and Windows) modules including Shared Memory and logging;
• Built special simulations to enable system testings.

• Worked on another large S&F communication system ("next-gen" of the previous one) rewritten from scratch in C++:

• Designed and developed extremely modular transport layer designed to be easily adapter to several rough mediums by user configuration;
• Designed and developed a logging system that can be filtered by using user-coded expressions;

• Worked on an RT communications controller for tactical mediums over Windows and VxWorks:

• Controller implemented several MAC protocols including CSMA, TDMA, MS-TDMA and more;
• Development of both Data Link/MAC and Network layers;
• Design and development for ALE Link control establishment MAC layer.

• Sole owner, designer and implementor of a light-weight transport layer for small-scale tactical radio networks written in C++. Work involved:

• Development of custom transport layer communication protocols designed to optimally utilized the given low-bandwidth medium;
• Application interface;
• Interfacing low level communication controller;
• Automatic nodes detection;
• Designed and developed a distributed automatic radio-slots allocation algorithm.

• Initiation, design and development of an application simulator based on a custom made language:

• Said language designed for easy learning-curve;
• Development of full-fledged Visual-Studio-like IDE;
• Support of easily written external plugins writter either in Native C or in .NET technologies;
• Plugins can be run over remote machines using various communications medium;
• Remote debugging support;
• Complex synchronization support (cross-machines synchronization facilities such as barriers, semaphores, events etc...).

• Worked on an Internet project combining COM and ASP technologies.

Private Projects

I enjoy writing software projects on my free time, among them:

• Shifts Allocation System for volunteers of the Israeli Animal Guard, written in Django.
• Shell History Browser written in Haskell.
• Flickr-like Annotated Images plugin for Dokuwiki, written in PHP.

I also like to build stuff, usually using microcontrollers. Some of the followings are described on my site:

• Wireless remote controlled (cellular and web to RF gateway) alarm clock teddy-bear. Used to wake people who are not responsible enough to set their own alarm clock.
• Automatic startup of electronic parking meter using a cooking clock
• 3D Lunar Lander, see http://www.youtube.com/watch?v=eX4jCzC69sM
• "Digital n-Sided Dice" using a solid-state accelerometer
• Dokuwiki Flickr-like annotated images plugin
• Wii Nunchuck controlled back massager

Education

• [1995] IDF "MAMRAM" Programming Course; Various military courses thereafter
• [2000 - 2006] B.Sc. in Physics and Biology - done in parallel of working at Elbit;

• Final project: development of a novel method to characterize a specific particle in a cell cytoplasm. Project involved use of methods in Information Theory, Physics and CS. Done using Matlab.

• [2009] Team Leaders course at Imagine Communications

Activities

• Ham Radio Operator, Callsign 4Z5TX and AC2TX.
• Electronics hobbyist and enthusiast:

• Development over various microcontrollers such as AVRs, MCS51s and PICs;
• Design and build the circuits by myself.

• Woodworking hobbyist