Building Selection Lab as co-founder and CTO. Hands-on, with an eye for great products and design.https://jordiwippert.nl/enhttps://jordiwippert.nl/posts/2026-09-02-xppen-ack05-macos-driver/https://jordiwippert.nl/posts/2026-09-02-xppen-ack05-macos-driver/The official XP-Pen ACK05 macOS driver kept crashing, so I wrote ack05d, an open-source Bluetooth LE driver, after reverse-engineering its protocol.Wed, 02 Sep 2026 00:00:00 GMTcodehobbymacosbluetoothreverse-engineeringswiftxppensayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2023-10-28-broken-computers/https://jordiwippert.nl/posts/2023-10-28-broken-computers/An embedded tweet about a System.IO.FileNotFoundException error, shared as part of a series of posts about broken computers.Sat, 28 Oct 2023 00:00:00 GMTrandomsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2023-10-28-make-move-links/https://jordiwippert.nl/posts/2023-10-28-make-move-links/A Make scenario that automatically sorts Todoist tasks containing links, such as tweets or GitHub repositories, into the right project.Sat, 28 Oct 2023 00:00:00 GMThobbyautomationtoolstodoistsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2023-10-10-the-selection-lab-investment/https://jordiwippert.nl/posts/2023-10-10-the-selection-lab-investment/Selection Lab raised 1.25 million euros from Arches Capital and Borski Fund, to keep building matching technology for more objective hiring.Tue, 10 Oct 2023 00:00:00 GMTlifestartupsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2023-09-24-obsidian-daily-meeting-notes/https://jordiwippert.nl/posts/2023-09-24-obsidian-daily-meeting-notes/An Obsidian setup for daily and meeting notes, using the Calendar, Periodic Notes, QuickAdd, and Dataview plugins to auto-name and list notes.Sun, 24 Sep 2023 00:00:00 GMTcodehobbyautomationtoolsobsidiansayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2023-09-18-tools/https://jordiwippert.nl/posts/2023-09-18-tools/A list of daily tools, including Obsidian, Fleeting Notes, Cron, Mimestream, Alacritty, Arc, Alfred, Bartender, and Grammarly.Mon, 18 Sep 2023 00:00:00 GMTcodehobbyautomationtoolsobsidiansayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2023-09-12-10-years-of-gh/https://jordiwippert.nl/posts/2023-09-12-10-years-of-gh/Marking ten years on GitHub since joining, shown here through two images and a link to the GitHub profile page.Tue, 12 Sep 2023 00:00:00 GMTcodegithubsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2023-04-04-simple-gh-pages-theme/https://jordiwippert.nl/posts/2023-04-04-simple-gh-pages-theme/A simple Jekyll theme optimized for GitHub Pages, built as a free alternative to Obsidian Publish, letting you write posts directly in Obsidian.Tue, 04 Apr 2023 00:00:00 GMTcodejekyllrubygithubobsidiansayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2023-04-01-dotfiles/https://jordiwippert.nl/posts/2023-04-01-dotfiles/A personal collection of dotfiles, mainly configuring Neovim, written in Lua, linked here to the GitHub repository.Sat, 01 Apr 2023 00:00:00 GMTcodenvimtmuxalacrittyluashellzshsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2023-03-16-spotify-track-and-artist/https://jordiwippert.nl/posts/2023-03-16-spotify-track-and-artist/A script that shows the artist and title of the currently playing Spotify track in a tmux status bar, linked to its GitHub repository.Thu, 16 Mar 2023 00:00:00 GMTcodeapplescriptshellsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2022-12-02-todoist/https://jordiwippert.nl/posts/2022-12-02-todoist/A screenshot marking having reached the 'Enlightened' status level in the Todoist productivity and task-management app.Fri, 02 Dec 2022 00:00:00 GMTrandomsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2022-09-12-github/https://jordiwippert.nl/posts/2022-09-12-github/A print design of a GitHub contribution graph for 2021, created using the skyline tool, shown here through three images.Mon, 12 Sep 2022 00:00:00 GMTrandomsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2022-09-12-no-place-like/https://jordiwippert.nl/posts/2022-09-12-no-place-like/A birthday gift from colleagues, referencing the localhost IP address 127.0.0.1, shown here in a photo of the gift itself.Mon, 12 Sep 2022 00:00:00 GMTrandomsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2021-03-07-loungeset/https://jordiwippert.nl/posts/2021-03-07-loungeset/During the Covid winter of 2021, building an outdoor loungeset from web-ordered pieces, after calculations and drawings, over a few weekends.Sun, 07 Mar 2021 00:00:00 GMThobbywoodworkingsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2020-08-17-joined-the-selection-lab/https://jordiwippert.nl/posts/2020-08-17-joined-the-selection-lab/Joined Selection Lab as co-founder and lead developer, building assessment-based matching technology for fit between applicants and job types.Mon, 17 Aug 2020 00:00:00 GMTlifeworkstartupsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2020-06-01-project-racebike/https://jordiwippert.nl/posts/2020-06-01-project-racebike/In the summer of 2020, an old Gazelle racebike bought on Marktplaats got renewed brakes, gears, and handlebar tape, among other repairs.Mon, 01 Jun 2020 00:00:00 GMThobbymechanicssayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2020-05-26-cs-graduated-msc-computing-science/https://jordiwippert.nl/posts/2020-05-26-cs-graduated-msc-computing-science/Graduated with an MSc in Computing Science, with a thesis on Change Impact Analysis for Rebel Specifications using formal methods.Tue, 26 May 2020 00:00:00 GMTlifecspapersayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2020-04-11-project-coindozer/https://jordiwippert.nl/posts/2020-04-11-project-coindozer/After building the Lego Rough Terrain Crane set, transforming its pieces into a coin pusher from the fun fair.Sat, 11 Apr 2020 00:00:00 GMThobbylegosayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2019-09-26-cs-experimentation-project-rain/https://jordiwippert.nl/posts/2019-09-26-cs-experimentation-project-rain/Combining photo and video imagery with weather data, using deep learning techniques such as Keras and TensorFlow, to detect rain.Thu, 26 Sep 2019 00:00:00 GMTcspaperkerastensorflowopencvpythonawsmachinelearningsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2019-08-10-blendle-heel-veel-wok-to-go/https://jordiwippert.nl/posts/2019-08-10-blendle-heel-veel-wok-to-go/Een Blendle Klubblad-artikel over Jordi Wippert's tijd bij Blendle, van stagiair bij team Workflow tot de lancering in Duitsland en zijn vertrek.Sat, 10 Aug 2019 00:00:00 GMTstartupworksayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2019-05-22-design-party/https://jordiwippert.nl/posts/2019-05-22-design-party/A party design created in Illustrator, titled '25 party design', part of a personal graphic design project, shown as one image.Wed, 22 May 2019 00:00:00 GMTdesignillustratorsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2019-03-10-kole-kermse/https://jordiwippert.nl/posts/2019-03-10-kole-kermse/As a volunteer on the Kole Kermse media team, work on Snapchat filters used during the event and gifs published on Giphy.Sun, 10 Mar 2019 00:00:00 GMTdesignsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2019-02-06-design-house-illustration/https://jordiwippert.nl/posts/2019-02-06-design-house-illustration/A house illustration created in Illustrator for a design project, shown here through two images of the artwork.Wed, 06 Feb 2019 00:00:00 GMTdesignillustratorsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2019-01-24-cs-haskell-compose-language/https://jordiwippert.nl/posts/2019-01-24-cs-haskell-compose-language/CoLa is a Haskell DSL for composing music with the structure of sheet music, convertible to MIDI, demonstrated here with a Dr. Dre cover.Thu, 24 Jan 2019 00:00:00 GMTcspaperhaskellsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2018-11-11-cs-wlp-based-automated-testing/https://jordiwippert.nl/posts/2018-11-11-cs-wlp-based-automated-testing/A wlp-based automated testing tool for the GCL language, covering path generation, translating preconditions to DNF, and handling program calls.Sun, 11 Nov 2018 00:00:00 GMTcspaperhaskelltexsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2018-10-24-cs-afds/https://jordiwippert.nl/posts/2018-10-24-cs-afds/A simulation estimating the operational performance of Utrecht's Uithoflijn tram line, expected to carry around 22,000 passengers daily.Wed, 24 Oct 2018 00:00:00 GMTcspapercsharpsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2018-06-30-design-vacparlu/https://jordiwippert.nl/posts/2018-06-30-design-vacparlu/Design work for Vakantiepark Lunetten, created in Illustrator, shown here through a series of six design images.Sat, 30 Jun 2018 00:00:00 GMTdesignillustratorsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2018-04-20-cs-big-data/https://jordiwippert.nl/posts/2018-04-20-cs-big-data/A two-part essay on Big Data mining, covering asymptotic running time and the Toivonen and Riondato & Upfal methods for frequent itemset sample sizes.Fri, 20 Apr 2018 00:00:00 GMTcspaperrtexsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2018-01-16-blendle-the-things-i-learned/https://jordiwippert.nl/posts/2018-01-16-blendle-the-things-i-learned/Lessons from three years at Blendle, from intern to employee, on finding the right company, taking feedback, changing teams, and going back to school.Tue, 16 Jan 2018 00:00:00 GMTstartupworksayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2017-11-12-cs-gta/https://jordiwippert.nl/posts/2017-11-12-cs-gta/A Haskell implementation of the original 1997 Grand Theft Auto, built with Kevin Wilbrink for the Functional Programming course.Sun, 12 Nov 2017 00:00:00 GMTcshaskellsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2017-09-01-cs-f1-simulation/https://jordiwippert.nl/posts/2017-09-01-cs-f1-simulation/A simulation based on the Nagel-Schreckenberg traffic model, studying how speed and braking affect Formula 1 crashes in a circuit's start section.Fri, 01 Sep 2017 00:00:00 GMTcspaperrubytexsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2014-11-01-startup-weekend-groningen-omapost/https://jordiwippert.nl/posts/2014-11-01-startup-weekend-groningen-omapost/Omapost placed second at Startup Weekend Groningen, shown here through event photos and an Instagram post from the weekend.Sat, 01 Nov 2014 00:00:00 GMTstartupsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2014-06-18-cmd-mijnwkpool/https://jordiwippert.nl/posts/2014-06-18-cmd-mijnwkpool/Mijnwkpool is een online systeem in Ruby on Rails waarmee gebruikers met vrienden een pool kunnen starten en voorspellingen voor het WK voetbal invullen.Wed, 18 Jun 2014 00:00:00 GMTcmdrubyrailssayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2014-03-04-design-flameguards/https://jordiwippert.nl/posts/2014-03-04-design-flameguards/A banner design made in Photoshop for the Flame Guards forum, an online gaming community, shown here with a second banner variant.Tue, 04 Mar 2014 00:00:00 GMTdesignphotoshopsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2013-09-19-interpolis-de-oplossing-van/https://jordiwippert.nl/posts/2013-09-19-interpolis-de-oplossing-van/In 2013, this insurance-solution idea was a finalist among twelve out of 1800 entries in Interpolis' 'De Oplossing Van' contest, though it did not win.Thu, 19 Sep 2013 00:00:00 GMTideassayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2013-05-23-design-liven/https://jordiwippert.nl/posts/2013-05-23-design-liven/A website concept design for Liven, created in Illustrator, shown here through four design images from the project.Thu, 23 May 2013 00:00:00 GMTdesignillustratorsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2013-03-06-design-dj-poster/https://jordiwippert.nl/posts/2013-03-06-design-dj-poster/A DJ poster design created in Illustrator, part of a personal graphic design project, shown here as a single image.Wed, 06 Mar 2013 00:00:00 GMTdesignillustratorsayhi@jordiwippert.nlhttps://jordiwippert.nl/posts/2012-10-16-cmd-concept-design-thin-ice/https://jordiwippert.nl/posts/2012-10-16-cmd-concept-design-thin-ice/Concept design for Thin Ice, created in Illustrator, shown here through the final design and an early concept image.Tue, 16 Oct 2012 00:00:00 GMTdesigncmdillustratorsayhi@jordiwippert.nl