Christian Häringer

Director of Engineering
Berlin, Germany

Hands-on engineering leader with 20+ years in software and 13+ years leading teams, across VC-backed startups, a health data non-profit, digital agencies and a product studio.

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Agent-first teams · Outcomes, not output

Christian Häringer standing in front of an elevator in a concrete hall, a large wall clock above him — Christian Häringer,
Director of Engineering Photography:
Julia Kestner

Brands I’ve worked with:

I make engineering teams faster, not bigger, and build software that holds up under real traffic, real regulation and years of change.

Years in engineering: 20+
Years leading teams: 13+
Engineers hired: 50+
Org scaled: 10→25

Now:
Building at acb.studio

Search that knows when it isn’t sure.

Natural-language product search for a retail client. Customers describe what they need in one sentence, and the shop’s existing filters fill themselves in.

01
Instead of generating text, a decision model answers a handful of typed questions about the sentence in a single call, each with a calibrated confidence score.
02
Confident answers are applied as filters. Uncertain ones are only suggested. Every pre-filled filter says why it is there and can be removed on its own.
03
It runs on top of the search the shop already has. No new search stack, no chatbot, no answers made up on a guess.

So what: the model’s uncertainty becomes part of the interface instead of something to hide. Customers get a faster way into the catalogue, and the shop stays in control of what is shown.

Why not just use an LLM: a decision model answers in milliseconds instead of seconds, at a fraction of the cost per search.

Experience

2023–Now

Director of Engineering

Lead a senior core team and made it agent-first: the workflows, guardrails and review habits that let a small team ship like a bigger one.
2019–2023

VP Engineering

Scaled engineering from ~10 to ~25 across five disciplines and built the hiring and career system. Co-developed CovApp with Charité.
2012–2018

Director Frontend Development

Built and led the frontend team. Interim tech lead inside 15+ portfolio companies across e-commerce, fintech and health.
2009–2012

Web Developer, Hamburg

e7 / Elephant Seven and deepblue networks. Built Mercedes-Benz's first responsive website.