Paulibytes UG – IT Consultancy Hamburg

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3. paulibytes(1)

NAME

paulibytes(1) – “cultivated pragmatism since 1982”

SYNOPSIS

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DESCRIPTION

paulibytes is a German-based IT consultancy focused on AI and automation, security and infrastructure.

AI strategy, implementation, data architecture and enablement for German mid-size companies and regulated industries. The AI work formerly done at makematiq continues here.

paulibytes is a limited company founded in 2019. This is the company page reachable at paulibytes.de.

PROJECTS

Software built and operated by paulibytes. German market, mostly unglamorous paperwork problems.

• finisma.de: e-invoicing and payment files
  • PDF invoice in, ZUGFeRD/Factur-X out (EN 16931 CII-XML embedded in a PDF/A-3)
  • SEPA pain.001 and AXZ files for online banking, assembled in the browser
  • free ZUGFeRD viewer and a pain.001 validator against DK-TVS GBIC_5
  • agents can do the same over MCP at https://finisma.de/api/mcp
• nachweismeister.de: site documentation by voice message
  • Leistungsnachweise, Regiescheine, Aufmaße and VOB/B notices, recorded in WhatsApp or Telegram
  • roughly 100 spoken languages in, German or English PDF out, because that is how construction crews are staffed
  • KVA upload, GPS site detection, digital customer signature, time clock
• wz2025.io: WZ 2025 classification API
  • company description in, German WZ 2025 industry code out
  • translates existing WZ 2008 codes to WZ 2025 and NACE Rev. 2.1
  • built for onboarding, KYC/AML and statistical reporting

AI PROJECTS

Client work, anonymised. Strategy only counts once something runs in production.

• n8n rollout, mid-sized company: old, undocumented and unmonitored scripts replaced with n8n workflows. Around 200k executions per week.
• Inbound email processing: customer requests and documents are read, classified and filed in SharePoint automatically. A reproducible use case, running at several clients.
• Incoming invoices, group with 250 subsidiaries: introduced an intelligent invoice intake workflow and kept extending it.
• KPI dashboard: KPIs collected automatically from different sources into one dashboard, so efficiency becomes measurable across departments.
• Supplier price tracking, small company: supplier prices tracked automatically to improve purchasing.

ENVIRONMENT

• 1982 born in Dresden
• 1986 Berlin
• 2001 Wedel / Hamburg
• 2010 Mbeya, Tanzania
• 2016 Hamburg

MOTIVATION

• mum loves to tell that I could start games on our Atari 800 w/ XC12 before writing my name
• learning Basic programming from the age of 6
• first html and js programming with 11
• started exploring windows network security about the same age
• contact with Linux starting with SuSE 4.3 in 1996
• building fli4l low cost routers for German dial-in internet
• custom kernels and Xfce in 1998 to match limited resources of old AMD K6 II 350MHz
• going through SlackWare, RedHat, TurboLinux, Mandrake, Gentoo and Debian
• highly customized versions of WindowMaker, XFCE, later E17 with XFree86, X11, Xorg and composite extensions
• early 00’s it’s all debian and servers, my home server lena which was the Eierlegende Wollmilchsau or jack of all trades
• interest for all different kind of servers (Web, Mail, VPN, VoIP, etc) of course on encrypted filesystems
• started learning C in 2003 when my first SATA controller drivers had lots of problems in Linux kernel
• exploring network security in bigger networks to overcome http limitations in university network
• from there everything was straight forward, more and bigger servers, bigger networks, more encryption, etc
• 2015 first saw the magic of self-healing systems: services that restart, reschedule and repair themselves before anyone gets paged
• 2017 first neural networks with TensorFlow
• 2023 GenAI, and since then turning language models into workflows that actually run in production

INTEREST

Besides having a broad general interest in technology and politics some key interests stick out.

• Clustering
  • Kubernetes, Mesos
  • concepts of distributed services and databases
  • Container as a Service solutions
• HA
  • with heartbeat and DRBD in 2006
  • k8s, scheduling, disruption budgets, automatic rescheduling and distributed microservices
• Infrastructure and Networking
  • IaaS, Infrastructure as Code
  • Distributed storage solutions
  • IP Routing, BGP
• Server client architecture and software design patterns
• Trade Finance
  • Factoring
  • Forfaiting
• Payments
  • European payment schemes
  • SEPA
  • EBICS
• AI and automation
  • LLM applications and document extraction in regulated environments
  • AI governance, hosting and compliance (GDPR, DORA, AI Act)
  • agents and MCP servers
• IT Security Research
  • vulnerability analysis and responsible disclosure
  • network and infrastructure security assessments

HOBBIES

• German and international politics
• analog black&white photography
• photos by Lee Jeffries, Vivian Maier, Adrian Aseptyczny and Jonathan Goepfert
• squash and sports in general
• books and reading

SITE

This site is written in Markdown, converted with hugo with some styles from ronn and some lazy .css additions

VERSIONHISTORY

• 0.1 - 08/2016
  • Initial layout and css styling
• 0.2 - 09/2017
  • Updated some details
• 0.3 - 10/2017
  • third time … nope, automated. make push is way nicer
• 0.4 - 02/2018
  • added some hobbies .. yeah, surprise
• 0.5 - 06/2020
  • Minor changes and company disclosure.
  • Migrated from ronn to hugo
• 0.6 - 07/2022
  • IT security projects and vulnerability research.
• 0.7 - 02/2023
  • Focus on AI and automation.
• 0.8 - 08/2026
  • Added a projects section. Turns out we ship things now.
• 0.9 - 09/2026
  • AI projects moved over from makematiq. Also counting visitors now, politely.
  • man -L de paulibytes works now.

COPYRIGHT

The texts and images on this site are not worth copying.

SEE ALSO

Jonathan Goepfert

llms.txt if you are a machine, robots.txt if you are a crawler.

DISCLOSURE

Disclosure according to § 5 DDG and § 18(2) MStV:

Paulibytes UG (haftungsbeschränkt)

Paulsenplatz 2
22767 Hamburg
Germany

Represented by: Managing Director Michael Wilke mw-spam@paulibytes.de
Commercial Register: HRB 157347 at Register Court Hamburg

VAT ID: DE325821677

No liability for external links from this website.

PRIVACY

Cookieless, privacy-friendly analytics with Umami (Umami Software, Inc., USA), no ads: pages viewed, referrer, country, browser and device class, clicks on some links. Our server also reports requests for llms.txt, robots.txt and sitemap.xml and visits arriving from makematiq.com. IP addresses are not stored, they only enter an anonymous session identifier in hashed form. Legal basis: Art. 6(1)(f) GDPR, US transfer covered by standard contractual clauses. Nothing is stored on your device, so no consent under § 25 TDDDG. Opt out: enable Do Not Track, which the site and server respect.

1. LANG=en_GB.UTF-8
2. 2026-09-28
3. paulibytes(1)