Two in the Loop is an AI company founded by brothers Henry and Nando Theeßen, based in Potsdam, Germany. It builds local AI systems for law firms, tax advisors, recruitment firms and auditors, professions where client confidentiality is a hard legal obligation rather than a preference. Its premise is pointed: even the legal-AI tools on the market send client data to US data centres, which for anyone bound by professional secrecy is a non-starter. The answer is to run everything on site. A powerful workstation server sits directly inside the firm, modern open-weight models such as Llama and Mistral run entirely on that hardware, and no client data ever leaves the firm's own infrastructure, delivered as a turnkey service with no in-house IT required.

The work itself is deeply practical. The system analyses briefs and contracts, reconciles tax assessments against returns, drafts correspondence and annual accounts in the firm's own style, and makes a firm's entire back-catalogue of past cases searchable in natural language, all under a strict "human in the loop" principle where nothing leaves without a professional's review, and built bespoke to each firm rather than sold off the shelf. Behind it is Henry, who studied business informatics at TU Berlin and sits at the rare intersection of configuring GPU workstations and running LLM environments himself while also talking to firm leadership about confidentiality obligations and concrete workflows. The result is a genuinely differentiated offer in a market full of generic AI wrappers.