Jae

Jae "J4" Lo Presti is a devops consultant and software engineer working at Eficode in Helsinki, Finland, centred around Git forges such as GitLab and GitHub.
It has been programming since the age of 8, and since been contributing to various Open-Source and Free software.
It can speak French, Arpetan, English, German.

Passions: Virtual Reality (VR), software development, networking, radio, history.

Expertise: software development, project management, sales support, server administration, training, BGP networking.

Commercial projects includes: PrestaShop, Odoo, Yogaia, GitLab, GitHub Enterprise Migrator, Resonite.

All opinions expressed on social media, blog posts and any other place are my own.

I've been staying away from large online communities for as long as I've been on the internet. This is not about to change.

My social beliefs are fairly simple to understand. I believe everybody has the right: to be fed, to be housed, to health, to free information (encompases education in general), to privacy, and to dignity.

My technological beliefs are close to the ones of the CCC, namely: all information should be free; mistrust authority; judge people on actions, not who they are; computers can change lives for the better; make public data available, protect private data. I am also a strong proponent of Open-Source, in all aspects of software, media and environments.

More than that, I think every country should provide its own services with a layer of interoperability instead of relying on large United-Statesian services and silos. If public money was spent on it, it should be public code as well.

Likewise, anti-circumvention laws are a cancer that needs to be eliminated.

Collection of things people have asked me over the years. Some of them have been paraphrased.

Q: Aren't you ashamed?
A: Not particularly, no.

Q: Do you have a PGP key?
A: No and no.

Q: Can I vent in your DMs?
A: No.

Q: Why do you get angry when people don't read instructions?
A: You answered the question with itself.

Q: Are you Finnish?
A: No.

Q: But you live in Finland?
A: Those are not mutually-exclusive things.

Q: Are you German?
A: What? No! Have you heard me talk?

Q: Where are you from then?
A: Antarctica. There, happy?

Q: What editors do you use?
A: JetBrains Rider for .NET, Sublime Text for the rest.

Q: If you're so against copyright, what if someone stole what you made?
A: Please do, 90% of my work is Open-Sourced and MIT licensed.

Q: Why do you wear a collar?
A: It feels right.

Q: Don't you think the collar is unprofessional?
A: I think interrupting me while I'm working to ask stupid questions is unprofessional.

Q: What are you then, an animal?
A: Yes

Q: Can I get a statement for my highly divisive article about some tech?
A: Please quote the following statement: "fuck off".

Q: Who is your hero?
A: Gaston Lagaffe.

Q: Are you one of them wokes?
A: Yeah. BOOH, are you scared yet?

Q: Who did you vote for in the 2025 presidential election?
A: Nobody, next presidentials are in 2027.

Q: Are you a furry?
A: I take it's not obvious enough. Rawr xD uwu. There you go, happy? :3c

Q: Will be at [convention] in [place in the USA]?
A: No.

Q: I took a picture with you at convention. Can I share it online?
A: Sharing with family is always accepted. Before sharing online, please do ask me, unless it is at a public speaking event, in which case please publish the picture under CC BY-SA 4.0 (up to you).

Q: What's your most controversial political take?
A: Abolish the USA and make it so Québec takes over the territories.

Q: I hate you!!!!!!!
A: That's not a question.

Q: How did you learn to do [thing]?
A: The internet. Find ressources about something you like, read, make small things, contribute to projects, have fun.

Q: Can we trade art?
A: This is a website about CI/CD, software development and IP phones.

Q: How many languages do you speak?
A: Enough to have lost my mind a long time ago.

• "The Theme" Wordpress Theme
• Crystalline Vision (Resonite world)
• A Home in the Mountains (Resonite world)
• Club Crystalline (Resonite world)
• Neo Kalidea Park (Resonite world)
• SOLExport (3D model exporter for ATI Sushi Engine)
• Overengine (blog engine)
• Resonite Observer (statistics dashboard)
• Headless Prometheus Exporter (Resonite server software modification)

A small summary of the VR gear I use.

I probably had the opportunity to test most of the available headsets on the market, from those well-known like the CV1 to more exotic ones like the Apple Vision Pro and Varjo series.

Headsets

• Quest Pro: Main daily driver, has face, eye tracking and good screens
• Quest 2: mostly a demo headset
• Valve Index: not used anymore, probably around 10k-15k hours using it
• Oculus Rift DK2: not used
• Oculus Rift DK1: not used

Misc gear

• Gigglepuck
• HTC 3.0 Trackers
• BHaptics TactSuit Air
• Quest Pro accessories from Globular Cluster

Software

• Fedora 43 Workstation Edition / Red Hat Enterprise Linux 10
• Envision building WiVrn / Monado
• Edrakon (OpenXR to OSC bridge)

Sessions I organize or am linked to:

• La Rencontre Hebdomadaire - A french-speaking meetup happening every Saturday from 14:00 (Helsinki time).
• Crystalline Shard - Every Wednesdays and Thursdays starting from 20:00 UTC.

Office hours recordings are available on c.j4.lc.

• Mapping of ghost kitchens in the Helsinki region

• Liny

• games finished (not complete)
• software recommendations
• Cheese, over IPv6
• Routinator service
• visualisation of Resonite issues
• Resonite ARM headless libraries package
• Making your own corner of the internet
• Are you my friend? Click this! (page is a bit heavier to load)
• The project

I can recommend donating to the following organizations:

• Blender Foundation
• Overte
• Servo
• WerWolv (ImHex)
• Disclose NGO
• Bellingcat
• Forensic Architecture
• Endangered Wolf Center
• Signal Foundation
• Python Software Foundation

• Furfloat 2023 (July 2023)
• Eurofurence 29 (September 2025)
• Eurofurence 30 (Upcoming August 2026)

I've recently started experimenting with SIP. You can reach me via:

• 17228 on HamPY
• 1059 on LiteNet
• 17778544410 or +1(438) 500-2694 (warning, roaming costs may apply) on CallCentric
• 200564 on Hams Over IP
• +358942459241 on VoIP.ms (referral link)
• 3544 on EventPhone EPVPN
• 3782 on EventPhone 39C3 (only available during 39C3): Virtual Reality Hotline

Note that I am in UTC+3 and may not be able to answer calls during my night.

New, see the live status of my phone.