Camille Potard, Developer in Le Mérévillois, France
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Camille Potard

Verified Expert  in Engineering

Software Developer

Location
Le Mérévillois, France
Toptal Member Since
February 23, 2021

Camille is a senior software developer with 20 years of experience building desktop applications for notable clients, such as E-on software, Hitachi, and Alstom. His primary expertise includes C, C++, Python, and real-time technologies with 3D software, in railway, power, video, imaging, and web domains. Camille thrives in remote environments with small or medium-sized teams.

Portfolio

Snow Technology
C++20, C#, C#.NET, SQL, SQL Server 2016, ASP.NET, Software Design Patterns...
Sharemob
C, Amazon EC2, OpenGL, 3D, FFmpeg, C++17, Image Processing, Full-stack, DevOps...
Alteryx
Python, Node.js, SDKs, C++20, Object-oriented Programming (OOP)...

Experience

Availability

Part-time

Preferred Environment

Windows

The most amazing...

...application I've created was a very fast video editing application with original features.

Work Experience

Senior C++ Developer

2023 - 2023
Snow Technology
  • Created a new database format for having multiple clients using the same database.
  • Fixed several bugs in the C++ code impacting the final users.
  • Adaptated the Q Payroll application code to develop a web interface by exporting all the software's functionalities (transforming the software into C++ libraries interfaced with C#).
Technologies: C++20, C#, C#.NET, SQL, SQL Server 2016, ASP.NET, Software Design Patterns, Object-oriented Programming (OOP), Source Code Review, Best Practices, Software Architecture, Architecture, Desktop App Development, .NET, ASP.NET MVC, TypeScript, ASP.NET Core MVC, Visual Studio Tools for Office (VSTO), Excel VBA, GitLab, Unit Testing, Back-end, Microsoft Visual C++, Microsoft Excel

C/C++ OpenGL Expert

2022 - 2022
Sharemob
  • Worked on server 3D video rendering using OpenGL and FFMPEG in C/C++.
  • Managed AWS server to use NVIDIA GPU for fast rendering.
  • Developed an Android app using OpenGL and face animation.
Technologies: C, Amazon EC2, OpenGL, 3D, FFmpeg, C++17, Image Processing, Full-stack, DevOps, Microservices, Low-level Programming, Remote Rendering, Android Emulators, WebGL

Senior Python Developer

2022 - 2022
Alteryx
  • Fixed many bugs on the C++ and Python side of the Alteryx Designer plugin SDK.
  • Created an end-to-end testing platform in Python from scratch for testing Alteryx Designer SDK plugins automatically on several software versions.
  • Added new functionalities to the plugin SDK to add more accesses to the core of the Alteryx Designer application from the plugins.
Technologies: Python, Node.js, SDKs, C++20, Object-oriented Programming (OOP), Source Code Review, Best Practices, Software Architecture, Architecture, Desktop App Development, Windows PowerShell, GitLab, Conan, Unit Testing, Pytest, pylint, Microsoft Visual C++, QA Testing, DevOps, Microsoft Excel, wxPython, Data Science

C++ Developer

2021 - 2022
Alteryx
  • Developed a Python SDK for reading and writing Alteryx Designer main file format.
  • Reverse-engineered the code of Alteryx Designer to understand all the aspects of the file format.
  • Used Python pandas libraries for compatibility with other formats of data management.
Technologies: Python, C++, Python 2, Pandas, SQL, ODBC, Unit Testing, NoSQL, Docker, Object-oriented Programming (OOP), Source Code Review, Best Practices, Software Architecture, Architecture, Windows PowerShell, GitLab, Microsoft Visual C++, Rust, Microsoft Excel, Data Science

Senior C++ Developer

2020 - 2021
Quantum Software Solutions
  • Updated C++98 code to more recent C++17 standards and libraries.
  • Replaced Microsoft Access database support by Microsoft SQL Server support.
  • Replaced C++ code by SQL Server stored procedure code.
  • Solved numerous bugs, cleaned up, and improved the code.
Technologies: C++98, C++17, C++, Windows, C++14, C++11, Git, Object-oriented Programming (OOP), Source Code Review, Best Practices, Software Architecture, Architecture, Desktop App Development, C#, .NET, GitLab, Unit Testing, Microsoft Visual C++, Microsoft Excel

C++ Developer

2020 - 2020
Repustate
  • Added Linux/Windows cross compiling capacity to the main data library using MXE.
  • Fixed bugs and crashes throughout the C++ code.
  • Added a library connection with the external Go compiled code.
Technologies: C, C++, Go

C Developer

2020 - 2020
Stefan BAUST
  • Modified the FFmpeg library to add delay to an RTMP/H264 stream and replace video and sound on the fly.
  • Developed multi-thread and real-time algorithms on Linux.
  • Developed C on Linux (Debian), which is network-based streaming.
  • Replaced compressed frames in real-time (Windows, Linux, OBS, NGINX RTMP) and added a pause function for real-time capture.
Technologies: C, Multithreading, Videos, FFmpeg, Linux, Networking, Low-level Programming

JavaScript Developer

2020 - 2020
ZIP Extractor
  • Implemented decompression algorithms in JavaScript.
  • Transformed complex algorithms from C to JavaScript (Deflate64, PPMD, LZMA, LZMA2).
  • Reverse-engineered open-source compression software.
Technologies: JavaScript, C, C++, Cryptography

SIMD Assembler Expert

2020 - 2020
Vaxtor Technologies
  • Optimized image processing algorithms in C using AVX and NEON intrinsics.
  • Used the Linux platform on x64 and Linux on Raspberry Pi (ARM).
  • Utilized GCC toolchain on Linux and Visual Studio on Windows.
  • Adapted imaging algorithms from VTK into SIMD assembler.
Technologies: SIMD, x64 Assembly, ARM Assembler, AVX2, Microsoft Visual C++, Image Processing, VTK, Visualization Tools, Computer Vision, Low-level Programming, Embedded Linux, Embedded C

Python Expert

2020 - 2020
RapidAds Inc
  • Worked on a PSD image format generator in Python/JavaScript.
  • Reverse-engineered Photoshop typography generation.
  • Added many functions, libraries, and image-processing algorithms (VTK).
Technologies: Python, Amazon EC2, JavaScript, VTK, Microservices, C#.NET

C++ Developer

2019 - 2020
Jewel VPN
  • Worked on the core of the software in C++17/QML/Qt (Visual Studio 2017).
  • Added an integrated web browser, allowing revenue generation by completing surveys.
  • Configurated OpenVPN servers and Linux server management.
Technologies: C++17, QML, Qt 5, Microsoft Visual C++

C++ Developer

2019 - 2019
Klewel
  • Worked on the software's core in C++17/QML/Qt/CMake (Visual Studio 2012 Windows and XCode on macOS X).
  • Added multi-thread and real-time algorithms and a pause function.
  • Modified C in the FFmpeg library to add a pause recording feature for webcam streaming and screen capture.
Technologies: C++17, QML, Qt 5, CMake, Visual Studio, Xcode, MacOS, Windows, Microsoft Visual C++

C++ Developer

2018 - 2019
SNCF
  • Maintained, enhanced, and added features to the software used to manage all real estate properties held by the French national train company (SNCF).
  • Added new functions and enhanced the user interface (UI) and user experience (UX).
  • Created and fixed Oracle SQL stored procedures and queries.
Technologies: C++, Oracle SQL, Windows, Git, Databases, Microsoft Foundation Classes (MFC), Microsoft Foundation Class (MFC) Library, C++98, Refactoring, Software Design Patterns, Object-oriented Programming (OOP), Optimization, Source Code Review, Best Practices, HTTP, Software Architecture, Architecture, Desktop App Development, Industrial IT, Industrials, Microsoft Visual C++, Microsoft Excel, Windows Services

C++ Developer

2018 - 2018
Alstom
  • Ported OGT-G software from Visual Studio 6 C++ code to Visual Studio 2015.
  • Upgraded various libraries; for example, Rogue Wave Tools libraries to Rogue Wave SourcePro and LOG Viewer 5.0 libraries to Rogue Wave Views 6.0.
  • Added new functions to railway communication software (SML400T) and worked on the communication layer, using TCP/IP/UDP.
Technologies: C++, TCP/IP, UDP, CVS, Multithreading, Networking, Databases, Microsoft Foundation Class (MFC) Library, Microsoft Foundation Classes (MFC), C++98, Refactoring, Software Design Patterns, Object-oriented Programming (OOP), Optimization, Source Code Review, Best Practices, HTTP, Software Architecture, Architecture, Desktop App Development, Excel Add-ins, Visual Studio Tools for Office (VSTO), Excel VBA, Industrial IT, Industrials, Microsoft Visual C++, Microsoft Excel, Low-level Programming, Windows Services

C++ Developer

2015 - 2018
Hitachi Rail
  • Assisted in developing railway supervision and control software (RCCS), featuring maintenance, timetables, and signaling. This supervision software is used for high-speed trains between France and London and on other train lines.
  • Focused on the TCP/IP/UDP communication layer (bug fixes and protocol enhancements), added new functions to the core of the software (using C++, Rogue Wave Server/Views, and Visual Studio), and developed new GUI elements.
  • Updated development tools and C++ code to the latest (from 2000 to 2015).
Technologies: C++, Windows, Python, Tcl/Tk, C, TCP/IP, UDP, CVS, Multithreading, Networking, Databases, C++98, Refactoring, Client/Server Networking, Software Design Patterns, Object-oriented Programming (OOP), Optimization, Embedded C++, Source Code Review, Best Practices, HTTP, Software Architecture, Architecture, Desktop App Development, Excel Add-ins, Visual Studio Tools for Office (VSTO), Excel VBA, Unit Testing, Industrial IT, Industrials, Microsoft Visual C++, QA Testing, DevOps, Microsoft Excel, Low-level Programming, Embedded Linux, Windows Services

Web Developer

2014 - 2018
TopChrétien
  • Developed a full payment system (https://www.topchretien.com/don/).
  • Converted an old PHP site to Django-Python (www.topchretien.com).
  • Integrated multiple web scrapers and added a video insertion system.
  • Added new sections to the website (www.topchretien.com) and a complex statistics system based on multiple sources, such as Google Analytics and Facebook.
  • Enhanced the server configuration based on Debian and AWS.
  • Developed an iOS and Android application for internal communication.
Technologies: Python, Django, PHP, CSS, SCSS, HTML, JavaScript, PostgreSQL, Elasticsearch, jQuery, MySQL, Networking, Databases, Amazon Web Services (AWS), Amazon EC2, REST APIs, Git, Android, iOS, Cordova, Real-time Communication (RTC), WebSockets, WebRTC, RTP, Source Code Review, Best Practices, HTTP, Architecture, WASM, TypeScript, Pytest, Back-end, Full-stack, Scraping, Selenium, DevOps, Android Emulators

C++ Developer

2014 - 2014
Alstom
  • Developed power grid software for power line management, which is used in many countries, corrected bugs, and added new functions.
  • Fixed numerous bugs involving multilayer programming in C++, C#, and Fortran.
  • Added new functions to the core of the program for specific projects.
Technologies: C++, Fortran, C#, CVS, Multithreading, Networking, Databases, C++98, Refactoring, Software Design Patterns, Object-oriented Programming (OOP), Optimization, Embedded C++, Source Code Review, Best Practices, Software Architecture, Architecture, Desktop App Development, Industrial IT, Industrials, Microsoft Visual C++, Microsoft Excel

C++ Developer

2010 - 2014
Hitachi Rail
  • Co-developed railway maintenance software (FRONTAM).
  • Assisted in developing railway supervision and control software (RCCS), featuring maintenance, timetables, and signaling. This supervision software is used for high-speed trains between France and London and on other train lines.
  • Focused on the TCP/IP/UDP communication layer (bug fixes and protocol enhancements), added new functions to the core of the software (using C++, Rogue Wave Server and Views, and Visual Studio), and developed new GUI elements.
  • Wrote software specification documentation for human-machine interface (HMI) and core function modifications.
  • Implemented scripts for installation and configuration of the environment and for data generation, using Python, Batch, Tcl/Tk. Wrote automatic tests in Python.
  • Optimized software by using more efficient algorithms.
  • Developed a new project for a new train line with corresponding HMI, data, and software modifications.
  • Fixed numerous hard-to-find bugs that had been hidden in the code since the creation of the software ten years earlier.
Technologies: C++, C, Windows, PostgreSQL, Microsoft SQL Server, Python, Tcl/Tk, Batch, Linux, TCP/IP, UDP, CVS, Multithreading, Networking, Databases, Microsoft Foundation Classes (MFC), Microsoft Foundation Class (MFC) Library, C++98, Refactoring, Performance, Memory Management, Software Design Patterns, Object-oriented Programming (OOP), Optimization, Embedded C++, Source Code Review, Best Practices, Software Architecture, Architecture, Desktop App Development, Excel Add-ins, Visual Studio Tools for Office (VSTO), Unit Testing, Industrial IT, Industrials, Microsoft Visual C++, QA Testing, DevOps, Microsoft Excel, Embedded C, Windows Services

C/C++ Developer

2013 - 2013
Eolane
  • Developed Scene 4 viewer software—a frame-accurate, remote H264 video viewer—based on C++, C#, GStreamer, and FFmpeg library.
  • Developed a high-end, multithreaded algorithm for the CPU.
  • Implemented an RTSP/TCP-based communication layer for remote viewing.
Technologies: C++, Windows, C, C#, FFmpeg, CVS, Multithreading, GNU Debugger (GDB), Networking, C++98, RTP, Object-oriented Programming (OOP), Optimization, Embedded C++, Source Code Review, Best Practices, HTTP, Software Architecture, Architecture, .NET, Video Encoding, Encoders, GStreamer, Video Streaming, Microsoft Visual C++, Image Processing, VTK, Computer Vision, Low-level Programming

Software Architect, Designer, C++ Developer

2004 - 2010
Filmative
  • Conceived, designed, and developed video editing software.
  • Implemented the complete development cycle, including a market study, conception, design, realization, and coding.
  • Designed the GUI and the GUI library that goes with it.
  • Integrated public-domain libraries, such as wxWidgets and FFmpeg, that worked on all desktop platforms for Linux, Mac, and Windows compilation.
  • Implemented many image and sound processing algorithms and an important real-time layer for multithreading and x86 SSE assembler optimization.
Technologies: Windows, C++, Boost, Standard Template Library (STL), FFmpeg, Subversion (SVN), Multithreading, GNU Debugger (GDB), C++98, Software Design Patterns, Object-oriented Programming (OOP), Optimization, Source Code Review, Best Practices, Software Architecture, Architecture, Desktop App Development, Computational Geometry, Video Encoding, Encoders, GStreamer, Video Streaming, Microsoft Visual C++, Image Processing, Visualization Tools

C++ Developer

2001 - 2004
E-on Software
  • Developed Ozone 2, a sky and cloud rendering plugin for various 3D software products, such as Cinema 4D and 3ds Max.
  • Ported the main application for a 3D landscape design and rendering software product from Microsoft Windows to Mac OS X and Vue.
  • Designed an automatic compilation and update creation system.
  • Corrected bugs, optimized a SIMD assembler, added new functionalities, and reverse engineered a competitor's file format.
Technologies: Windows, C++, MySQL, Multithreading, Networking, OpenGL, Microsoft Foundation Class (MFC) Library, Microsoft Foundation Classes (MFC), C++98, Refactoring, MacOS, Memory Management, Performance, Software Design Patterns, Object-oriented Programming (OOP), Optimization, Source Code Review, Best Practices, Software Architecture, Architecture, Desktop App Development, Computational Geometry, 3D Rendering, Microsoft Visual C++

Video Editing Application

A C++-based video editing application for desktop Windows, using the wxWidgets library for the HMI and the FFmpeg library for video rendering. After starting this as a personal project, it became a full-time job as a startup entrepreneur. At its inception in 2004, there were not many video editing applications, and most of them were quite slow.

The idea was to develop a very fast application with a very fast HMI, written in templatized C++, using an optimized widget drawing system designed for video editing and written entirely from scratch. I collaborated on this project with my father, also a software engineer, and he wrote the audio rendering part of the project.

I led this project to the first fully functional version, which was four years after the project was initiated. While serving as the project manager, architect, designer, and developer, I wrote nearly 80,000 lines of code. For urgent personal reasons, I stopped working on the application just before the beginning of the commercialization, but it is fully working. You can take a look at the HMI on the project website.

Contribution to RCCS Project

RCCS is a railway control center application, running on Windows, for supervision, control, and scheduling of high-speed trains between the Channel Tunnel and London. It is a critical environment because it's used to manage train routes, schedules, positions, and status. There were unresolved bugs in the software for many years, and system (not train) crashes sometimes led to huge delays on the highly frequented train line because the management of the whole train schedule depended on this software. Delays on this line were very expensive!

My role was to find and solve the very hard-to-find bugs, using a lot of inputs from circumstances, a memory dump, and a stack dump. Because I was able to debug the assembler code directly in a binary library (ILOG Server) that this software was depending on, I found the origin of the bugs and proposed a correction to fix them. After the corrections were applied, the software was very stable and there were no more delays due to the software.

TopChretien Website

https://www.topchretien.com/don/
A website for a non-profit organization that depends solely on gifts from people for its economical model. One of my main contributions was the development of an easy-to-use gift page based on Django-Python, CSS, HTML, and JavaScript. I made it very easy for people to contribute to the charity by entering their information and paying in a variety of easy ways. Contributions increased by 60% in the year that the page was deployed.
1997 - 2001

Master's Degree in Computer Science

Paris XI University - Orsay, France

Libraries/APIs

Standard Template Library (STL), FFmpeg, Microsoft Foundation Class (MFC) Library, Microsoft Foundation Classes (MFC), jQuery, wxWidgets, OpenGL, WebRTC, WebGL, REST APIs, Pandas, ODBC, Node.js, VTK

Tools

Visual Studio, Pytest, Microsoft Visual C++, Microsoft Excel, Shell, CMake, Subversion (SVN), CVS, Git, GNU Debugger (GDB), Visual Studio Tools for Office (VSTO), GitLab, pylint, wxPython, Conan, Xcode, Android NDK

Languages

C++, Python, C, C#, SQL, C++98, C++20, Batch, PHP, CSS, SCSS, HTML, JavaScript, Java, Assembler, C++17, Assembler x86, C++11, C++14, QML, C#.NET, Embedded C++, TypeScript, Excel VBA, Embedded C, Tcl/Tk, Fortran, Caml, UML, ARM Assembler, Python 2, WASM, x64 Assembly, Go, Rust

Paradigms

Refactoring, Unit Testing, Object-oriented Programming (OOP), Best Practices, Desktop App Development, DevOps, Microservices, Data Science

Platforms

Windows, Software Design Patterns, Linux, Amazon Web Services (AWS), Android, MacOS, Docker, Embedded Linux, Amazon EC2, iOS, Azure, NVIDIA CUDA

Storage

PostgreSQL, Microsoft SQL Server, Oracle SQL, MySQL, Databases, NoSQL, Elasticsearch, SQL Server 2016

Frameworks

Boost, Django, Qt 5, Qt, .NET, ASP.NET MVC, ASP.NET Core MVC, GStreamer, Selenium, ASP.NET, Windows PowerShell

Other

Scripting, TCP/IP, Multithreading, Networking, Optimization, Source Code Review, HTTP, Software Architecture, Architecture, Video Encoding, Encoders, Back-end, Industrial IT, Industrials, Low-level Programming, Windows Services, SIMD, AVX2, Real-time Communication (RTC), RTP, Computational Geometry, Excel Add-ins, Video Streaming, 3D Rendering, Image Processing, Visualization Tools, Cryptography, Full-stack, Scraping, QA Testing, Remote Rendering, Android Emulators, Neon Signs, UDP, Cordova, Client/Server Networking, Performance, Memory Management, WebSockets, SDKs, Mathematics, 3D, Videos, Computer Vision, Llama 2, Open-source LLMs, Large Language Models (LLMs), Artificial Intelligence (AI)

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