Only Ole.

I tell you which DevSecOps decisions actually make sense — before they get expensive.

No options. No lengthy analyses. Just decisions that move your team forward.

Most problems don't come from a lack of knowledge — they come from wrong decisions at the wrong time.

100% remote · 1:1 sessions · Max 5 clients per month

Discreet collaboration. No references. No case studies.

Jetzt Slot anfragen →
Klarstellung

I'm not the one who builds your system. I'm the one who decides what should be built.

That's uncomfortable. Which is exactly why it works.

Wer steckt dahinter

Kai Ole Hartwig

For more than 23 years I have been building and operating production systems — from classic web stacks to modern cloud and DevSecOps architectures. Today I help teams make better technical decisions.

More from me: on my blog and in my podcasts.

Common Topics

Security risks in production systems

You know something's off — but not exactly where. I find the weak spots and tell you what needs to happen first.

Insecure or inefficient CI/CD pipelines

Slow builds, missing tests, manual deployments. I show you the shortest path to a pipeline you can trust.

Unclear architecture decisions

Too many options, too little clarity. I bring structure and help you make the right decision — not the most popular one.

Tech debt that's slowing you down

Legacy code, outdated dependencies, missing documentation. I prioritize what actually hurts — and what you can safely ignore.

Exklusive Pakete

Pick your level

Book now · €249

The Teaser

A taste of what's to come

249 EUR

45 minutes · focus call

  • One question — one clear decision
  • Initial direction — no deep dive
  • Afterwards you know whether you're on the right track
  • Results summary by email
Book now · €249
Book now · €1,499

The Private Session

Exclusive. Intense. One on one.

1.499 EUR

Half day · 4 hours of deep work

  • I identify the decisions that are holding you back right now
  • Clear direction instead of more options
  • Concrete next steps you can act on immediately
  • Prioritized action plan — no overhead
  • 1 week of async support
Book now · €1,499
Best Value
Book now · €2,499

The Full Monty

2.499 EUR

Full day · focus workshop

  • One full day, one focus topic
  • I show you where it's going to blow up — before it does
  • Threat modeling and risk assessment
  • Remediation roadmap — what comes first, what can wait
  • 2 weeks of async support
  • Follow-up call (45 min) included
Book now · €2,499
Book a call · price on request

The Relationship

Retainer · ongoing decision support

  • Only for teams that have already worked with me
  • Your standing decision authority at architecture level
  • Direct line — chat, call and video
  • Security reviews before every release
  • When things are on fire, I work prioritized
  • Quarterly review and roadmap update
Book a call · price on request

No hourly rates, no overhead. Clear packages, so you know upfront what you get.

Direction, decisions, clarity — so your team knows what to do.

Discreet collaboration with teams in healthcare, mid-sized companies and SaaS.

All sessions remote. On-site on request, at a surcharge.

Right after payment you land on the booking calendar — pick a slot, done. No email ping-pong.

🔥 When things are on fire, I work prioritized — express slot within 48h. (+50%)

All prices plus VAT. This offer is strictly for businesses (B2B).

Passt das?

Not for everyone. Exactly right for some.

You're in the right place if:

  • You're not sure which decision is the right one
  • Your team is stuck or getting lost in discussions
  • You have the feeling something's off — but can't pin down what
  • You don't have time to burn weeks going in the wrong direction

Not for you if:

  • You're just looking for a second opinion
  • You don't want to make decisions
  • You're looking for someone who just executes
Intake

Describe your problem. I'll tell you what to do.

The better you describe your problem, the more you'll get out of our session. No small talk — we start right away.

1. Fill in the form — describe your setup and your problem

2. I review your request — I'll get back to you within 24h

3. Scheduling and payment — book a slot, pay, get going