EuroBSDCon 2025

I'm a sysadmin working with Linux systems for ~25 years and FreeBSD for ~10 years in production systems.
Since about 10 years i'm using ansible to automate the mangment of systems i'm responsible for.

Alexander Bluhm is an OpenBSD developer since 2007. His main area
of work is the network stack. In the recent years focus was on
multi processor performance. He is employed at genua, a German
firewall manufacturer, who wants to speed up its OpenBSD based
products. Other areas of interest are the errata process, maintaining
Perl ports, and fixing all kinds of bugs.

Alfonso is a FreeBSD enthusiast and developer who uses FreeBSD as his daily driver on his main laptop. His open source contributions span the kernel, libraries, userland utilities, and documentation. You can explore his projects, notes, and ideas on his FreeBSD Wiki page.

Motivated IT Consultant and Lecturer with a strong academic background (Master of Science, GPA 2.2, thesis awarded magna cum laude) and extensive hands-on experience in software development, IT consulting, and academic instruction. Proficient in a wide range of programming languages including C++, Java, and SQL, as well as modern development tools and cloud technologies such as Docker, Terraform, and ESXi. Recognized for strong analytical thinking, high level of self-discipline, and excellent teamwork skills, combined with a deep technical understanding and a solution-oriented mindset.

Benedict Reuschling is a documentation committer in the FreeBSD project. In the past, he served on the
FreeBSD core team for two terms. For more than 8 years, he administered a big data cluster at the University of Applied Sciences, Darmstadt, Germany. He’s also teaching a course “Unix for Developers” for undergraduates. Benedict is one of the hosts of the weekly bsdnow.tv podcast.

Benedict works as a lab engineer at the University of Applied Sciences, Darmstadt in the database and operating systems group. He is teaching a class called "Unix for Developers" since 2012. Benedict is a documentation committer in the FreeBSD project and one of the moderators of the BSDNow.tv podcast.

Professionally I mostly wrestle penguins an the odd networking device. I work for a Cantonal administration in Switzerland in a team which aims to build a new network where as many services as possible are run on IPv6 only. I'm currently working on DNS, monitoring and DDI in general.

Everything I run privately is running on a flavor of BSD - to get some diversity. If I am not on a computer I spend my time outdoors, climbing mountains, ski touring, cycling or unicycling.

Bjoern has been a long-term FreeBSD developer with interests in security, virtualization (jails, vnet), computer networking (IPsec, IPv6, and lately again WiFi).

FreeBSD ports committer focusing on desktop, Python, amateur radio and some Rust.

Born and raised in Austria, Chris studied Computer Science at the University of Technology in Vienna, Austria. He's been in IT since the late 90s and started working with FreeBSD around release 5. For the past 14 years he's worked in the construction industry in various IT management roles.

In 2021 he first became more active in the community by becoming a port maintainer and when Greg Wallace at the FreeBSD Foundation founded the Enterprise Working Group in 2023, he joined as volunteer. Since then, he's been an active contributor around bhyve and documentation, working on making FreeBSD even more useful and usable for enterprise use.

You can find Chris on LinkedIn as well as the regular Laptop and Desktop Workgroup Calls (https://wiki.freebsd.org/LaptopDesktopWorkingGroup)

I've started using Unix and Unix system programming in the mid-80s,
early on implementing a TCP/IP stack on System V R3. I've been a NetBSD
user from day one and a contributor from early on. Finally becoming a
developer in '98 participating in early pkgsrc and kernel development.

My main interests are file system, networking, performance, observability,
containerization, systems automation and system automatability.
I've worked with NetBSD, FreeBSD and OpenBSD and a lot of Linux.

Christos is a FreeBSD committer.

Dave has spent the last 2 decades trying to stay at least 1 step ahead of The Bad Actors on the internet, starting off with OpenBSD 2.8, and the last 9 years with FreeBSD since 9.3, where he has a ports commit bit, and a prediliction for obscure functional programming languages that align with his enjoyment of distributed systems, & power tools with very sharp edges.

• Professional Yak Herder, shaving BSD-coloured yaks since ~ 2000
• FreeBSD ports@ committer
• Ansible DevOops & Elixir developer
• enjoys telemark skiing, and playing celtic folk music on a variety of instruments

Denis has been a FreeBSD user for more than 10 years and he likes it very much. :)

He spends most of his time at work and with his loved ones, but Tuesday afternoons are reserved for planning new IMUNES features with his friend Karlo, while his free weekends are dedicated to developing them himself.

Model '77, Slackware-gone-BSD in the early 00s, escaped the dying world of OS/2 to be doomed to death by Netcraft for another decade. Now managing jailed (but not dead!) systems for a living and as a hobby.

Mid-life crisis topic: Retro PCs.

~ love over gold ~

Emmanuel is a recent computer science graduate from Ghana. He is a NetBSD developer and the current maintainer of NetBSD's firewall. He is super passionate about system development and security. He hunts code vulnerabilities in his free times.

Florian has deleted more code from OpenBSD in ten years than he added. He has been all over the source tree but found his niche in network configuration, IPv6, and DNS.

Hans-Jörg Höxer is employed at genua, a German firewall manufacturer, who is using OpenBSD as a secure and stable base for its products.

Harald Eilertsen is software developer and information security professional. He has been programming computers since the early 1980's, and has worked for companies like Tandberg, Cisco, Modirum and Automattic. He is currently self employed and working as an independent consultant.

Sysadmin during the day, NetBSD hacker at night.

Hiroki Sato is an assistant professor at Institute of Science Tokyo. He is a member of the FreeBSD core team and has been a FreeBSD committer since 2001.

Jake Freeland is a FreeBSD committer focused on networking, security, and graphics driver development. He currently works at NIKSUN where he maintains a networking driver stack capable of live packet analysis at 100Gbps speeds.

I am a system engineer by trade and by passion. My platform of choice are the BSDs. I have been using OpenBSD for over two decades and HardenedBSD for about a decade.

John has been an active FreeBSD developer since 1999 working on various areas of the kernel and userspace. In more recent years, John has dabbled in the toolchain space including the GNU debugger and the LLVM ld.lld linker.

Kent Inge has been working with Software Engineering since 2005. In that time, he has contributed to numerous projects and systems. He has also published several academic articles as well as some opinion pieces on various topics in Software Engineering including in application security.

Dr. Marshall Kirk McKusick writes books and articles, teaches classes on UNIX- and BSD-related subjects, and provides expert-witness testimony on software patent, trade secret, and copyright issues particularly those related to operating systems and filesystems. He has been a developer and committer to the FreeBSD Project since shortly after its founding in 1993. While at the University of California at Berkeley, he implemented the 4.2BSD fast filesystem and was the Research Computer Scientist at the Berkeley Computer Systems Research Group (CSRG) overseeing the development and release of 4.3BSD and 4.4BSD. He earned his undergraduate degree in electrical engineering from Cornell University and did his graduate work at the University of California at Berkeley, where he received master's degrees in computer science and business administration and a doctoral degree in computer science. He has twice been president of the board of the Usenix Association, served nine years as a board member and treasurer of the FreeBSD Foundation, is a senior member of the IEEE, and a member of ACM, and AAAS.

In his spare time, he enjoys swimming, scuba diving, and wine collecting. The wine is stored in a specially constructed wine cellar (accessible from the Web at http://www.mckusick.com/~mckusick/) in the basement of the house that he shares with Eric Allman, his partner of 45-and-some-odd years and husband since 2013.

I'm a 28-year-old system administrator from Germany, near Mainz. I started my training as an IT specialist for system integration in 2017 and have been working as a system administrator since 2020.

Since late 2023, I’ve been working with FreeBSD and am continuously learning more about it. My main focus is on automation using Ansible. In production environments, I primarily use FreeBSD for database servers and other core infrastructure components where stability is essential.

Long-time architect of the whole ports/package management systems in OpenBSD

Mario has been an active contributor to the demoscene for over two decades. As a founding member of the demogroup mercury, as a member of the board of Echtzeit - the Swiss demoscene association and as a main organizer of MountainBytes. Switzerlands biggest demoscene event. He started his career in film production, visual effects and color grading but has slowly transitioned to Software Development and now works as a Security Architect for Financial Infrastructure in Zurich. He started working with FreeBSD in the 2010s when he developed a distributed AV-editing and encoding system for which FreeBSD was the ideal OS.

• received a master degree (Diplominformatiker) from University of Paderborn
• been working as C++ developer for most parts of my professional carreer
• worked on a 3D architectural CAD software (written in C++) in my previous job
• currently working for a company doing product visualizations on the internet with various tools, including C++ backend stuff and BabylonJS/WebGL JavaScript/Typescript frontend stuff in the browser
• been a NetBSD developer since 2000, originally working on the ISDN stack
• sparc64 portmaster, release engineer and member of the core team
• always loved strange architectures and bizare machines, have a real VAX in my lab - doing "portability" as a hobby
• have been working on renewal of the net80211 stack since a few years

bhyvecon is the only conference dedicated to BSD Hypervisors including FreeBSD/Illumos bhyve, FreeBSD/NetBSD Xen, OpenBSD vmm, and NetBSD Xen/nvmm/HAXM.

Sysadmin, network engineer, author. https://mwl.io

Moin is a FreeBSD infrastructure developer working with the FreeBSD Foundation. His focus areas include CI/CD pipelines, reproducible builds, secure artifact delivery, release engineering, and cluster administration. With a strong operational background, he helps maintain critical infrastructure that supports FreeBSD’s development, testing, and release processes.

He has been deeply involved in packaging and ecosystem health within the FreeBSD project; especially the Ports Collection; advocating for higher standards in quality, lifecycle management, and risk awareness. His contributions span both code and community discussions, particularly around supply chain security, port deprecation policy, and the need for modern auditability in a rapidly evolving threat landscape.

Through both hands-on maintenance and policy-level insight, he continues to push for a Ports Collection that balances flexibility with responsibility and meets the needs of today’s security-conscious users.

As a System Administrator I concentrate on the management of our software testing and deployment infrastructure. I spend my days managing a mixed environment of Unix and Windows based, all managed using Ansible. I use my free time to operate my own Free & OpenBSD servers and administer the Nextcloud instance for my Scout group

Olivier has been continuously using FreeBSD on all his machines and those of some of the companies he worked with since the end of 2004. During this time, he has grown a set of private customizations including modifications to rc scripts and some kernel bits. After having worked for over 15 years in the CAD and finance sectors, he lately switched back to pure IT topics, and in particular operating system development. His main interests are centered around kernel development, with a particular focus on scheduling, file systems, jails and security. He's currently a contractor for the FreeBSD Foundation.

Patrick M. Hausen, born in 1968, developed an interest in all things Unix and networking in general in the late 80s. Having worked on various commercial implementations and looking for an operating system that would be more capable than Minix for actual daily use at home he found out about FreeBSD in 1993.

He's been using, hacking, advocating and occasionally cursing FreeBSD ever since.

In 1997 he joined punkt.de GmbH and has been responsible for network and data centre operations up to this day.

With his colleagues he designed and built the FreeBSD jail and ZFS based hosting platform known as "proServer".

Peter N. M. Hansteen is a devops and network security consultant, writer, and sysadmin based in
Bergen, Norway. In addition to writing The Book of PF (4th ed forthcoming), Hansteen is longtime free unixlikes advocate, a frequent lecturer on OpenBSD and FreeBSD topics, an occasional contributor tech magazines and websites and co-organizer of Unix user groups and BSD-themed conferences. Fun fact: Before setting out to write about PF and BSDs in general, Hansteen was a participant in the original RFC 1149 implementation team.

Rob lives on a forested property outside of Winnipeg Canada with his wife, his dog, and many musical instruments. He runs a small public network (AS62752) using OpenBSD.

ROLLER ANGEL spends most of his time helping people learn how to accomplish their goals using technology. He’s an avid FreeBSD Systems Administrator and Pythonista who enjoys learning amazing things that can be done with Open Source technology — especially FreeBSD and Python — to solve issues. He’s a firm believer that people can learn anything they wish to set their minds to. Roller is always seeking creative solutions to problems and enjoys a good challenge. He’s driven and motivated to learn, explore new ideas, and to keep his skills sharp. He enjoys participating in the research community and sharing his ideas.

Souma Sakaguchi is a graduate student at Future University Hakodate, Japan. His research focuses on container networking, virtualization, and operating system compatibility between Linux and FreeBSD. Currently, he is exploring Linux-compatible container networking for FreeBSD.

OpenBSD developer and founder of the Game of Trees project.

Stefano Marinelli is an IT Consultant with over two decades of experience in the realms of IT consulting, training, research, and publishing. His expertise spans across operating systems, with a special emphasis on BSD systems - FreeBSD, NetBSD, OpenBSD, DragonFlyBSD - and Linux. Stefano is also the Barista at BSD Cafe, a vibrant community hub for BSD enthusiasts, and has led the FreeOsZoo project at the University of Bologna, making open-source operating system images accessible for virtual machines.

Stephen has been using NetBSD since 1995. From 1996 to 1999, he worked for Acorn Computers supporting and developing ARM RISC OS thin-client products with NetBSD servers before starting Precedence Technologies in 1999 to continue their development. Stephen has been a NetBSD and pkgsrc developer since 2007.

In his spare time, Stephen enjoys orienteering and playing bass guitar in various bands.