Stephane MEYER

Web developer with 12 years of experience, including lead in charge of a small team, I specialized in Node.js back-end performance and PHP -> Node.js project migrations. Read more about my experiences below.

Hellowork est un des principaux sites d’offres d’emploi. Je suis en charge de reprendre un POC dans le domaine de l'IA en Node.js afin de rendre le code fiable, évolutif et scalable. • Passage à Typescript, ajout de tests Jest • Mise en place de nombreuses nouvelles features Environnement : Linux, Node.js, Typescript, Docker, MongoDB, API OpenAI

• As part of the modernization of Xen Orchestra, I participate in the evolutionary and corrective maintenance of the backend. • Migration of Jest tests to node:test, implementation of new tests. • Migration of Javascript code to Typescript. Environment: Linux, Node.js, Typescript, Jest, Github, React.js, LevelDB, Redis.

Completion of an automated stock trading project, including fully automated generation of charts with indicators, analysis of stock market articles, and a Node.js library for interpreting machine learning models in PMML format. The usage is done via a REST API and a Discord server. Environment: Linux, Node.js, Typescript, WebSockets, Prisma, MariaDB, Jest, TDD, KNIME, Next.js, Nginx, Docker.

Arrow is a wholesaler of software licenses and subscriptions internationally. • As a Node.js backend developer in the Vendor Connectivity team, my task is to migrate the legacy PHP application to AWS serverless architecture and develop new features. • Since the backend cannot be executed locally and requires 12 minutes to deploy with the existing script, I have written scripts using the AWS CLI to deploy lambdas and step functions independently in seconds, and to trigger or publish the necessary events. Environment : Linux, Jira, Node.js, Typescript, MySQL, MongoDB, AWS serverless.

The Sportall app and webapp broadcast a large selection of sporting events live/vod. www.sportall.fr • To cope with the growing number of users and events, I am in charge of upgrading the entire backend part in order to improve performance. • Writing load tests with k6. • Migration from MongoDB to PostgreSQL. • Improved performance x 4 of the internally developed framework. Environment : Node.js / React / GraphQL / MongoDB / Redis / Slack / ClickUp / DataDog / Sentry, sur du Docker / Kubernetes / Google Cloud.

MonPtiVoisinage : social network for neighbors www.monptivoisinage.com • Reinforcement for the launch of the site, maintenance and evolution of the site. • Administration interface: management of users and neighborhood areas on a map with the Google Maps API. • Implementation of a moderation system. • Assistance in securing the site. Environment: PHP / Javascript / MySQL / Linux.

Good-Spot : collaborative tourism platform www.good-spot.com • As sole developer, maintenance and evolution of a project developed externally. • Creation of a web widget to promote the service on other sites in a targeted manner. • Gift voucher system (purchase/PDF generation/payment via Payline API). • Migration of the entire site from PostgreSQL to MySQL (database + code). • Redesign of the search engine. Environment: PHP / Javascript / PostgreSQL / MySQL / Mac OS X / Linux.

Personal projects. • 1995: Software for converting PC images to HP48 calculators in ASIC (free BASIC compiler) for DOS, sold as shareware. • 1996: Software for transferring Amstrad CPC files on cassette to PC via the sound card, by reverse- engineering, in ASIC for DOS, published since on several sites devoted to CPC. • 2000: Heavy client for sharing private rooms for AIM instant messaging in Visual Basic 6 / PHP on the server side. • 2003: Instant messaging client compatible with AOL/AIM (TOC protocol) in C ANSI for Windows/Linux. • 2006: Jabber/GoogleTalk compatible instant messaging client (XMPP protocol) in C ANSI for Windows/Linux. • 2014: Search engine for job offers in PHP, scrapping bot for many sites (Pole Emploi, temporary agencies, job boards) in Java. • 2015: Application for automatic connection to FreeWifi hotspots in Java for Android mobile. • 2015: Site for planning rehearsals and concerts for my music group, in PHP. • 2016: NPM package node-soap-rawmessage, fork of node-soap allowing to modify the XML of the request. • 2017: Assembly and monitoring software and hardware restart of internet box, in C on Arduino. • 2017: Self-hosted Internet connection DSLAM detection service, in PHP: whatismydslam.ddns.net • 2018: SMTP mail server in TypeScript/Node.js • 2019: Shopping list application in TypeScript/React-Native for Android / iOS mobile: www.liste-de- courses.com • 2023-2024: Development of an automated stock trading project, including fully automated generation of charts with indicators, analysis of financial news articles, and a Node.js library for interpreting machine learning models in PMML format. Environnement : DOS / Windows / Mac / Linux / Mobile / IoT.