Christian Jennewein

NW Group has been rolling out solutions that seek to increase the share of decarbonized energies in France’s electricity mix, secure grid stability, and help develop electric mobility. I'm helping the engineering department with organization and optimization through applying agile methodologies, sharing best practices and writing code.

TopScore is dedicated to providing exceptional management software for organizers of sports and activities. We help thousands of organizations, leagues, and tournaments all over the world manage their events, payments, and members. I'm helping to make TopScore a better software through making existing features more robust, creating new functionalities and modernizing interfaces.

Ciklet sells pre-owned certified bicycles. We are cycling enthusiasts that want to change the bike buying experience and drastically increase every bike's mileage by developing a certified pre-owned bicycle market together with partner bike shops. My role was to setup the technical environment to drive growth, which basically meant gaining online reputation and connecting to various marketing and analytics platforms. The three main tech components I put in place were a Next.js-based frontend, the WooCommerce-based backend and a Symfony-based growth hacking application.

Deezer is a music streaming app that gives you access to over 90 million tracks worldwide and other audio content like podcasts. I was heading Deezer's Content department by managing 25+ software, mobile, web, test & data engineers, driving our product development efforts together with our Head of Product. I was responsible for connecting users and content creators through robust ingestion, tailored display and smart data feedback.

CEO & Software Engineer

Tech Manager, then Head of Engineering

I launched and grew a collaborative event platform for Ultimate Frisbee, called FFindr. The site featured Ultimate Frisbee tournament calendars from all around the world, with the possibility to configure and manage event-based registrations. Translated in thirteen languages, the application was the one-stop solution for every Ultimate Frisbee player in Europe and peaked at 50k monthly active users. The project joined forces with US-based TopScore in 2014 and merged into Ultimate Central in 2015.

- Being agile on a daily basis (somewhere between SCRUM master and product owner) - Interface between client and programmers - Working on web applications powered by Symfony (1 and 2) - Writing specifications (functional & technical)

Part of the development team that created the "V3", a fully overhauled Mappy experience that went live in summer 2009. Digging deep into PHP, JavaScript and CSS.

Working in the web development team on Microsoft technology with co-founder Romain Niccoli; building the B2C real-time recommendation widget, a backend suite to personalize & manage web content, and as a bonus: the company's website. I left the company just before it pivoted and became one of the most successful French tech companies ever, which was strongly linked according to a (probably not too serious) comment from co-founder Jean-Baptiste Rudelle.

Custom web development & design based on PHP and JavaScript for various clients.

Student research project in detector management, algorithmic correction of faulty pixel arrays in C++ on X-ray examination device.

Internship followed by a student job in web development. Programming of a Flash game and other web-related projects.

Internship then student job in the online media department.