Who I am

I was born on October 27, 1991, in Rennes, France. After earning my Bachelor of Science degree with honors, I decided to pursue computing studies, which quickly became more than just a career path—it turned into a true passion for programming.

Over the years, through five years of studies and diverse professional experiences, I have mastered multiple programming languages and problem-solving techniques. Now, as a senior developer, I not only design and develop high-quality software but also mentor and train junior developers, helping them grow their skills and contribute effectively to projects.

I enjoy tackling challenges independently, but I also thrive in collaborative environments, where I can propose improvements and optimizations to enhance projects. My goal is to continuously learn, innovate, and build impactful solutions.

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My professional experiences

In this part I will explain my missions during my different experiences in the several companies I’ve worked.

4i logo

4idps – Taipei

April 2021 to January 2025 : 45 months

Project : Development of several complex web projects for diverse clients.
My contribution : Recruited and trained a team of junior developers, and led various projects to ensure they met client expectations.
Tools and languages used : React, Vue, Typescript, HTML/CSS, GraphQl, Python, Sass, Less, Figma, lightningchart.
OS : Windows.

  • Team building:

    - Developed interview assessments to evaluate candidate skills.

    - Conducted interviews with junior and mid-level front-end developers.

    - Contributed to the team's hiring decisions.

  • Streaming Platform Website:

    - Learned and implemented GraphQL.

    - Developed the front-end in collaboration with the back-end team, adhering to Figma designs.

    - Optimized video playback performance.

  • Crypto Exchange Website Remediation:

    - Analyzed the existing React codebase and determined the steps required for remediation.

    - Researched best practices for handling various cryptocurrency wallets.

    - Delegated tasks to team members.

  • Video Sharing Website with Cryptocurrency Payment System:

    - Made key technology decisions for the website's development.

    - Consulted with the client on technology choices.

    - Developed several core modules of the website.

  • Earthquake Alert Website:

    - Led the front-end development efforts.

    - Researched and understood the mathematical challenges associated with this type of complex website.

    - Learned and implemented the LightningChart library for real-time visualization of large datasets.

    - Modified and optimized the Python data generation scripts to improve data accuracy and performance.

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Black sun logo

Black sun – London

October 2018 to August 2020 : 23 months

Project : Development of different websites used as annual report for several worldwide companies.
My contribution : Develop all the front-end part of several of these websites and make them match the design.
Tools and languages used : Jquery, JavaScript, HTML/CSS, Adobe XD, React.
OS : MacOS.

  • Adapt to the specification of the AEM framework.

    - Understand the functionality of AEM with the help of my team and by doing research online.

    - Correct and add functionalities to existing websites.

  • Able to follow a complex design and make sure that the website is fully responsive and functional.

    - Participate in meetings to help to build a design with the designers.

    - Use adobe XD to visualize the final design.

    - Make the website look exactly as per design using different technologies.

  • Learn to use different libraries to satisfy different customers.

    - Most customers ask for special designs that require the use of special tools.

    - Do research on how to include the need of the customer inside the project.

    - Auto-formation on the new technology.

    - Include them inside the project.

  • Develop different websites for several worldwide companies using AEM website

    - Baltik exchange

    - Coca cola HBC

    - Imperial Brand

    - Inmarsat

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網鈺 logo

網鈺 – Taipei

January 2018 to July 2018 : 7 months

Project : Development of gambling games for some casinos based in Macao.
My contribution : Develop all the front-end part of several games and correct some others games using the library Phaser.
Tools and languages used : Phaser, JavasScript, HTML/CSS.
OS : Windows.

  • Learn how to use Phaser.

    - Understand Phaser functionnalities with the help of their website.

    - Develop a small snake game.

  • Develop a chinese card game name : "牛牛".

    - Understand the rule of the game.

    - Divide the work in different parts. (Gant Diagram)

    - Develop each part of the game one by one.

  • Develop a chinese majong game name : "麻將21點" .

    - Understand the rule of the game.

    - Divide the work in different parts. (Gant Diagram)

    - Develop each part of the game one by one.

  • Correct several games

    - Understand the old code.

    - Find where the error came from.

    - Correct and upgrade the code.

  • Transmit my knowledge about Phaser and the game I develop.

    - Create a Software documentation for each games I develop.

    - Imagine a 2 days formation teach few people how to develop with Phaser and how I decided to develop the different games.

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neosoft logo

Néosoft – Rennes

August 2016 to February 2017 : 7 months

Customer : Atos
Project : Development of a software to collect every 2 minutes different informations about the PMU machins of France and verify if there is no main technical problem. If it's the case : send an immediate alert to the people concerned.
My contribution : Develop the alarm module, correction of the actual system, develop new indicators, develop the user interface of this application.
Tools and languages used : Python, C, perl, HTML/CSS/javaScript, MySQL, jQuery, SQL.
OS : Unix and Windows.

  • Develop the alarm module.

    - Collect the informations to create a simple file in json easily to modify with the name of the different contacts in case of a technical problem.

    - Develop different alerts systems according to the status of the PMU machin.

  • Correction of the actual system.

    - Test the differents parts of the software.

    - Identify and correct the bugs that could appear during the verification.

  • Develop new indicators.

    - Add some informations to collect on the pool of each PMU machins.

    - Use these new informations to create new kind of alerts.

  • Develop the user interface.

    - Develop a simple web-interface to show the different datas collected on the PMU machin at each pool.

    - Develop some graphs to get a better vision of the status of the differents PMU machins (on a week, a month, a year,...).

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neosoft logo

Néosoft – Rennes

(Avril 2016 to Juin 2016 : 3 months)

Customer : Atos
Project : Development of the web-based management platform to help the sustainable housing vacuum in Paris decreased in Paris: Multiloc.
My contribution : Develop new modules and correction of the different anomalies that I could find on the application Multiloc.
Tools and languages used : Java, J2EE, HTML/CSS, MySQL, jQuery, SQL, Bootstrap, SVN, Eclipse, Workbench.
OS : Windows.

  • Develop different modules.

    - Understand the requirements (reading of the specifications, meeting with the customers).

    - Develop the modules.

    - Unit tests.

  • Correct the anomalies of the application.

    - Reproduct the anomaly.

    - Find why this abnormalities existed.

    - Correct the anomaly.

    - Explain the correction in a document.

  • Programming of some asynchronus attachements.

    - Study of the AsynchronusUploadHandler library.

    - Creation of the attachement at the different places of the Multiloc application.

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Alten logo

Alten – Rennes

January 2015 to September 2018 : 9 months

Customer : Seres
Project : Restructuration, modifications and improvements of a web platform for management of temporary contracts : Temporaris.
My contribution : Continue the programming of the web-plateform Temporaris.
Tools and languages used : PHP/HTML/CSS/jquery, phpMyAdmin, SimpleSamlPHP, Bootstrap.
OS : Windows.

  • Develop new modules or upgrade some modules.

    - Understand the architecture of Temporaris.

    - Develop the new module.

    - Integrate the new module to the application.

  • Instal of a service provider in place of the customer (in a banking environement).

    - Training on SimpleSAMLphp.

    - Configuration of an Identity Provider to realize tests.

    - Programming of a Service Provider.

    - Use the service Provider to create automatic connexions on the application Temporaris.

    - Installation of the Service Provider in place of the customer in Paris.

  • Make the application responsive.

    - Training on Bootstrap.

    - Integrate Bootstrap on the application Temporaris.

    - Make the application responsive by using Bootstrap.

    - Improve the design of the menu.

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DCNS – Brest

September 2013 to September 2014 : 12 months

Project : Develop a maintenance application for another application : OPTI. This application helps to manage the costs, the time limits and the disponibility of all the important projects in the naval base (repair of boats or submarines).
My contribution : Continue to develop some new performance indicators to simplify the detection of anomalies on the application : OPTI.
Tools and languages used : PHP/HTML/CSS/jQuery, Python, Dia, Quality Center, vi.
OS : Windows and Unix

  • Create a documentation of the architecture of the current program.

    - Uderstand the architecture of the current programm.

    - Create diagram of the architecture of the application with the software Dia.

    - Create a developement documentation of the application Temporaris.

    - Create a manage documentation of the application Temporaris.

  • Prepare the indicator before the programming.

    - Meetings with employees concernedby carrying out the specification of the indicator.

    - Write the specification of the indicator.

    - Create unit test to validate each indicator using the software Quality Center.

    - Create UML diagram before starting to program each indicator using the software Dia.

  • Develop new indicators using Python object (50%) and PHP (50%).

    - Possibility to visualize the differents indicators with several views (global, for each cluster and graphic).

    - Using Python to get the informations in the log files generated by the application OPTI.

    - Using PHP/HTML/CSS/jQuery to display the indicators on the screen.

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CHRU (hospital) – Brest

April 2013 to August 2013 : 5 months

Project : Computerization of the care process to improve the managing of the patients.
My contribution : Develop new prescriptions forms.
Tools and languages used : HTML/CSS/jQuery, HEO (medical software), Notepad ++.
OS : Windows.

  • Create specification.

    - Meetings with doctors to know requirements.

    - Create form model.

    - Porposing upgrade for the layout of the form.

  • Developpement of prescription forms.

    - Creation of the form using HTML.

    - Use jQuery to make the form more simple to read and only display the useful informations.

    - Use the software HEO to make the form avaible.

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Technicolor – Rennes

April 2012 to August 2012 : 5 months

Project : With the emmergence of the web technologies 2.0, the company wanted to begin an HTML5 portal similiar to a previous one using Flash to anticipate the future.
My contribution : Development of a portal that permited to select a movie with an androide system or an Ipad with the possibility to watch it on another support like a television.
Tools and languages used : HTML/CSS/jQuery, SVN, Aptana, Ilustrator CS5.
OS : Windows.

  • Training on HTML5.

  • Study of the old flash portal.

  • Develop the different pages of the HTML5 portal from the model create with Illustrator CS5.

    - Connection page : Select an user.

    - Main page : Page to access at the different functions of the web portal.

    - Movie catalog page : Display a movie catalog using the javaScript library 'Swipewiew' (to load during the navigation). The informations on each movie are loaded from a back-end service using Ajax.

    - Details of a movie page : Display the different datas about the movie.

    - Setup page for the catalog page: Possibility to use a fiter by catagory (action, fun, horror, ...), sort the movie (by alphabetical order, rate ...), choose the display mod (display the jacket of the movie or only the title).

    - Perfil page : Personalize the theme of the application

  • Created unit test

    - Use the library QUnit

    - Create test to verify the format of the data of the movies collected from the back-end service

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Inovae – Montréal

April 2011 to August 2011 : 3 months

Project : Get the best offer to obtain a contract with the harbour of Montréal.
My contribution : Develop a web platform to manage the electicity and the water for all the users of the Montréal harbour.
Tools and languages used : HTML/CSS/javaScript, PHP, Drupal.
OS : Windows.

  • Training on the CMS Drupal.

  • Coding the billing module

    - Create specifics pages for the creation of the bills (form + tariff calculation).

    - Create the consultation page for the bills.

    - Modify the design using some Drupal templates.

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My skills

Skill Experiences/levels
Computing languages
JavaScript & Typescript 11 years
HTML/CSS 11 years
PHP 3 years
Python 1.5 year
Java 1 year
C 0.5 year
Perl 0.5 month
C# 0.5 years
Frameworks/libraries
React 4 years
Vue 1 year
Angular 0.5 year
jQuery 5 years
Less/Sass 4 years
Bootstrap 2 years
AEM 2 years
Phaser 1 year
Unity 1 year
Drupal (PHP) 0.5 year
Flask 0.5 year
Symphony 0.5 year
Lutece (java) 0.5 year
SimpleSamlPhp 1 year
Database
SQL 4 years
GraphQL 2 years
MySQL 3 years
Oracle 1 year
Operating systems
Windows 11 years
Unix 3 years
iOS 3 years
Linux - Ubuntu 3 years
Languages
French Native
English Fluent
Spanish Intermediate
Chinese Beginner
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Education

Year English equivalent diplomas Establishments
2012-2014 Master's degree in IT UBO - Brest
2011-2012 BA in IT UBO - Brest
2009-2011 BTEC Higher National Diploma in IT IUT -Lannion
2012-2014 Scientist Level with mention Lycée Victor et hélène Bash - Rennes

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One more thing

Now that you know who is the employee Yohann Person, let's talk a little about the personality.

Developing is one of my passion but I also really enjoy traveling, meet new people with different cultures and different visions of the world. I consider myself as an easy going person with who it's simple to talk about many subjects. I think by myself and I have an opinion on many different subjects but I can change my mind with experience and with people I meet .

I'm also a big fan of snowboarding and hikking, nature means something to me. And if I don't look at the sport in front of a screen, I love practice all kind of sports, even if I have a preference for racket sports. I'm also interessed in all kind of sciences especially by astronomy.

To conclude with this part, I see myself as an easygoing person who knows when it's time to be serious but also when it's time to have fun.

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