Kristian Tanninen

Kristian Tanninen

Product CTO

AI Architect

Monthly or on demand

An AI architect for AI that runs in production. Evaluated, cost-controlled, inside your permissions.

AI features inside your product, agents that run a business process end to end, and the evals and controls that keep them predictable once they are live. Monthly as a service, or on demand.

  • Monthly or on demand
  • Start within days
  • EU and US hours
Kristian setting the approval gate in the permission frame of an AI agent system

Also as Fractional CTO and Product Lead, or as a fixed-price SaaS & AI product launch.

Where you are

01

Sound familiar? This is when an AI architect pays off.

  • An AI feature that works in a demo and has to hold in production.
  • A process that runs on people copying data between tools.
  • A team choosing models and frameworks, and deciding where AI belongs at all.
  • An agent that needs approvals and an audit trail before anyone trusts it.

What I own

02
  1. AI features

    Where AI creates real value in the product, built on Claude or OpenAI.

  2. Agent systems

    Specialised agents sharing one task, each inside a permission boundary you control.

  3. A person in the loop

    Whenever an agent's action departs from plan, a person decides, and every decision is logged.

  4. Search over your data

    Embeddings and vector search in PostgreSQL, tuned against real queries.

  5. Evals

    Golden datasets and regression evals for every prompt and model version.

  6. Cost and latency

    Budgets per feature, tracked in production, with alerts before they are exceeded.

Who you work with

AI
Kristian Tanninen
Kristian Tanninen

Fractional CTO and product lead, Vienna

I design and run AI agents in production, from multi-agent systems to back-office flows, and I build my own agent products. Before AI, I spent 25 years in software architecture.

“Kristian is certainly one of the top picks in his field.”
Client review on Upwork

AI in production is an architecture decision. Evals, permissions and cost come first.

25 years
In software architecture and product, in Europe and North America.
50+
Product launches across startups and enterprises.
5.0★★★★★
Upwork rating, Top Rated Plus, more than $500K earned.

How it starts

3 steps
  1. 1

    A call

    The process or feature, the data behind it, and what a wrong answer would cost.

  2. 2

    Architecture and evals

    Models, agents, permissions and the eval set, written down before anything is built.

  3. 3

    Build and stay on

    Your team and AI agents build it under my review, and I own its quality in production.

Pricing

As a service or on demand

A steady lead, or help when you need it. Monthly as a service, or on demand.

Pick the weekly hours that fit, as a monthly service you can change or cancel any month. For a defined piece of work, take me on demand.

Per month, excluding VAT.

Advisor

As a service

$2,600/ month

4 h per week

A weekly session on where AI belongs, and every AI design reviewed before it is built.

Book a call

Lead

As a service

$5,200/ month

8 h per week

I design the agents and their evals, and review every change your team makes to them.

Book a call

Embedded

As a service

$10,400/ month

16 h per week

Two days a week inside your team: agents built, evaluated and run in production with you.

Book a call

On demand

On demand

Let's talk

Hourly contract

An AI feasibility review, an eval design or a short burst of hands-on work, billed by the hour.

Talk it through
In every plan
  • Monthly, cancel any month
  • Hours logged and visible
  • Written decisions
  • EU and US hours

One person, three roles

Monthly, on demand or an outcome

Industries

AI architect

Questions

FAQ

How is it priced?

As a monthly service at 4, 8 or 16 hours a week, or on demand on an hourly contract. You see the hours as they are logged.

Which models and tools?

Claude and OpenAI models, the Vercel AI SDK, MCP servers and n8n, with Supabase and pgvector for data. The choice follows the task and its cost.

Can you lead the whole product too?

Yes. I am also a fractional CTO and product lead, so the AI decisions sit with the product and architecture decisions.

Get in touch

Start with a call.

We go through your product and your team, and agree which role you need first.

Services: SaaS & AI product launchEnterprise AI agentsAI agent evaluationFractional CTOProduct LeadAI Architect