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Hi There, I’m Omer Katz.

A Software Architect from Israel.

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Resume

Hi there ;)

Hi there ;)

Skills & Languages

Hebrew (Native Speaker)

English (Fluent)

Autodidactic

Team Player

About Me

I'm a software architect from Israel. I'm happily married and a father newborn son.

I consult early-stage startups to help them pick their tech stack at the project's early R&D phase & brainstorm on their architectural or design decisions. I also mentor late-stage startups & enterprises to help them reach their full potential and scale their R&D departments. I can be hands-on when a client requires me to be, and I'm well versed in many programming languages, technologies, and methodologies.

I maintain multiple prominent Open Source projects, and I'm very active in the Open Source community to which I contribute regularly.

Experience

Senior Software Developer
Matrix
Jun 2010 to Oct 2012

Senior Software Developer
Stox
Feb 2013 to Feb 2014

Senior Backend Software Developer
ZIMPERIUM
May 2014 to Jan 2016

Platform Engineer
Fiverr
Jan 2016 to Jan 2017

Independent Contractor
Checkpoint
Jul 2017 to Dec 2017

Independent Contractor
Frontegg
March 2020 to January 2021

Independent Contractor
Bloomberg
Jan 2019 to Present

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Services & Pricing

Did your Team Leader or your VP R&D just quit at the worst time possible? Do you need a temporary replacement? Are you unsure who’s your next hire? Don’t have enough senior software developers to train your juniors? Got an important feature coming up? Are you introducing new Agile methodologies to your R&D department?

I am available for hire. I offer a variety of services to technology companies, both large and small.

Schedule A Brief Consultation

Is your production environment frequently unstable? Got a deadline you have to meet, and your team is stuck? Are you having trouble deciding which tools you should introduce to your technology stack?

Schedule an appointment using the form below. I’m here to help.

Contact

If you'd like to get in touch with me, whether to get a quote for a project, to ask me anything in private or just to chat. Feel free to reach out by filling out this contact form, or by visiting any of my social media below.

 
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My Blog

Featured
Python, PyPy, Protobuf, Reflex, cppyy, C++
Using Protobuf With PyPy
Python, PyPy, Protobuf, Reflex, cppyy, C++

In case you're not familiar with PyPy yet, it's a Python interpreter with JIT compiler.

PyPy has many advantages. It can run Python code faster then any existing interpreter, has a lower memory footprint then CPython, it allows you to choose the right level of language abstraction for your code depending on how fast you need it to be since it supports running Python, RPython and allows you to provide C and C++ extensions and It's 99% compatible with CPython.

One of the major differences and what makes PyPy adoption a non-trivial process is the why PyPy interfaces with CPython extensions. If you're interfacing with C code you need to ensure that you use the right bindings.

CPython extensions use Python's C API which PyPy does not have. PyPy can run some CPython extensions using cpyext but those extensions will run slower on PyPy due to the need to emulate reference counting. That also means that Cython generated extensions will be slower.

PyPy on the other hand has support for the not very commonly used ctypes and CFFI which can be run on both interpreters. CFFI runs much faster on PyPy than ctypes so if you're targeting PyPy it's better to use it. I was told that CFFI has been known to be a bit slower than C extensions on CPython because it does not access the C API directly but it wraps it. I could not find evidence for that claim although it makes sense.

If you're interfacing with C++ code, there has been a discussion to port boost::python to PyPy but I don't think it has been done yet.

PyPy provides cppyy which is written in CPython and thus able to JIT out most of the binding related code. cppyy has multiple backends it can use. In this post I'm going to cover Reflex since it's the default and it is currently the most stable backend.

In this post I'm going to demonstrate how to run Protobuf 2.5.1 on PyPy. Protobuf's compiler generates Python code which relies on a CPython extension in order to interface with the Protobuf implementation and is I mentioned before this is not going to be as fast as it should be for PyPy. Google provides a pure python implementation of Protobuf in version 3.0 which is not yet release and breaks compatibility in some aspects from Protobuf 2.x.

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Python, PyPy, Protobuf, Reflex, cppyy, C++