altf3.nl

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altf3.nl

00 ~/altf3 — main

Infrastructure that just works.
Code that ships.

Freelance IT engineering from the Netherlands. Linux, cloud, automation and backend development — for teams that would rather not be paged at 03:00.

  • Linux / BSD
  • Kubernetes
  • Terraform
  • Go · Python · TS
  • Observability
  • Security hardening
zsh — 80×24
$ whoami
altf3
$ uptime
loading...
$ █

01 services.yaml

What I do

Declaratively speaking:

services.yaml
apiVersion: altf3.nl/v1
kind: Engineer
metadata:
  name: altf3
  location: "NL / remote"
spec:
  infrastructure:
    - Linux server design, hardening & lifecycle
    - Kubernetes, containers, GitOps (ArgoCD/Flux)
    - Terraform / Ansible — everything as code
  development:
    - Backend APIs in Go, Python, TypeScript
    - CLI tooling & internal developer platforms
    - CI/CD pipelines that finish before your coffee
  operations:
    - Monitoring: Prometheus, Grafana, Loki, OpenTelemetry
    - Incident response, post-mortems, runbooks
    - Backups you have actually restored
  replicas: 1          # sorry, not horizontally scalable (yet)
  sla: "honest"

infra audit

Two-day deep dive into your servers, network and cloud account. You get a prioritised report and a fix-it.sh.

platform build

Greenfield or migration: Kubernetes or plain VMs, fully codified, with docs your future self will thank you for.

on-call backup

Retainer-based escalation. When it breaks, someone who has read your architecture picks up the phone.

02 stack

Installed packages

apt list --installed | grep altf3
$ apt list --installed 2>/dev/null | column -t
linux/stable        debian,ubuntu,alpine,nixos     [daily driver since 2008]
kubernetes/stable   k3s,talos,eks,gke              [production]
iac/stable          terraform,opentofu,ansible     [everything]
lang/stable         go,python,typescript,bash,rust [rust: enthusiastic amateur]
data/stable         postgresql,redis,clickhouse    [production]
o11y/stable         prometheus,grafana,loki,otel   [production]
net/stable          wireguard,nginx,traefik,bgp    [homelab has an ASN, yes]
sec/stable          vault,sops,age,fail2ban,cis    [paranoid by default]
editor/stable       neovim                         [:wq]
wm/stable           i3,sway                        [Alt+F3 → guess]

03 systemctl status altf3

active (running)

Numbers are placeholders — swap them for your real ones.

0
years in production
0
projects shipped
0
uptime last 12 mo
0d 00:00:00
page uptime
journalctl -u altf3 -f
-- Logs begin at boot --

04 git log --oneline

Recent commits

  1. a1f3c05
    2025 · fintech client feat: migrate 40 VMs to k3s cluster, zero downtime Terraform + Ansible + ArgoCD. Deploy time from 45 min to 4 min. Cost −38%.
  2. b2e4d19
    2024 · SaaS startup fix: observability from zero to full OTel tracing MTTR dropped from hours to minutes. Nobody guesses anymore.
  3. c3d5e2a
    2024 · public sector sec: CIS hardening across 200+ Debian hosts Automated compliance checks, reported nightly. Auditors were suspicious it was too easy.
  4. d4c6f3b
    2023 · e-commerce perf: PostgreSQL tuning, p99 from 1.2s → 90ms Indexes, connection pooling, and one very cursed query.

05 contact

Open a connection

Replies within one business day. PGP welcome. No recruiters, please — unless you bring a genuinely interesting problem.

curl
$ curl -X POST https://altf3.nl/api/contact \
  -H "Content-Type: application/json" \
  -d '{
    "from":    "you@example.com",
    "subject": "we should talk",
    "body":    "our servers are on fire"
  }'

HTTP/2 202 Accepted
x-response-eta: < 24h