Technology is the tool.
People are the goal.

Active consulting mandate — tier-1 telco (fibre / Glasfaser), DACH

Currently engaged, 2026 ongoing. I hold a senior programme role at a tier-1 fibre / Glasfaser operator in DACH, doing technology and architecture consulting with leadership responsibilities inside the programme across field-operations coordination and stakeholder alignment. Details sit under NDA, and a walkthrough is available after NDA.

Throughline — persistent memory for Claude Code

The problem. Claude Code has built-in memory (CLAUDE.md, a capped MEMORY.md, transcripts on disk), but most of it is unsearchable, size-limited, or never loaded into a new conversation. Long-running work still re-derives the same decisions and re-asks the same questions I thought the project had already answered. Throughline widens that memory into a searchable, inspectable layer that persists across sessions and runs on my own machine.

A local memory layer for Claude Code. Postgres with pgvector (HNSW indexes) for semantic search across sessions; embedders configurable between OpenAI text-embedding-3-small and Ollama for fully offline use; an MCP server exposing ten tools to the client. A reflection engine periodically deduplicates, resolves contradictions, decays stale entries, and consolidates the knowledge graph. Transcripts are redacted against sixteen patterns (API keys, tokens, private keys, emails, home-directory usernames) before extraction. Runs entirely on the user's machine.

Modern data stack in production — open-source DWH with local AI

The problem. Most data warehouses either send AI queries out to a US-cloud API or skip AI altogether. For a mid-market DACH client with DSGVO constraints, competitive-data sensitivities and licence-cost pressure, neither option works. What we built instead was AI that runs on the warehouse itself, on the client's own infrastructure, with audit trails and no data leaving the building.

Production data warehouse for a mid-market DACH client. A read-only ki_middleware gives local AI safe, audited access to the warehouse — no request leaves the client's infrastructure. dlt pipelines ingest CRM, ERP and Excel-controlling data into a PostgreSQL DWH with thirty-one governed views; Dagster orchestrates; Metabase visualises. A nightly sync into an open-source CRM gives the business a documented exit path from its incumbent SaaS. Built to retire per-seat BI and CRM licences. Containerised, ADR-documented, with an eight-chapter operator handbook and a DSGVO security policy. Open-source throughout.

Head of Technology — mid-market DACH technology firm

I led technology strategy and operations through a phase of organisational transformation. The priorities were closing the strategy-delivery gap and modernising the tooling that was holding the business back, while the in-flight programs had to be kept stable at the same time. Specifics on team sizes inherited, targets and adoption metrics are available on request under NDA.

German LLM from scratch — a pedagogical build

The problem. Most introductions to transformers use English, and most off-the-shelf models treat German as an afterthought. Neither helps anyone who wants to understand why attention behaves differently for a language with compound words, four cases, and verb-final subordinate clauses. This repo is the from-scratch build that makes every component legible.

A ground-up transformer for German, written to keep a gestalt understanding of what these systems actually do. Six tutorials walk through transformer mechanics, attention, feed-forward layers, German-specific tokenisation, the training loop, and data collection; a mini-dataset builder and training script sit underneath. Runs entirely offline.

EquiML — fairness audits for ML datasets

The problem. Fairness tooling for ML is scattered across libraries — one for metrics, another for constraints, a third for explainability. Every audit I ran turned into the same copy-paste glue code. EquiML is the three-command pipeline that replaces it. One dataset goes in, a report comes out, the accuracy-vs-fairness tradeoff made explicit.

A command-line tool wrapping fairlearn, SHAP, and scikit-learn into one pipeline — load, detect bias, train a fair model, compare results. HTML report, metrics as JSON, CLI and Python API. CI-tested, MIT-licensed.

Managing Director, CRM & Data — mid-size German IT services firm

Managing-director mandate, two and a half years. Refocused the business toward CRM and larger B2B accounts, set up a CRM consulting practice, added offshore delivery capacity, and brought AI into the delivery process. Material EBITDA improvement over the period; figures available on request under NDA. M&A screening and negotiations alongside.

Head of Data Solutions — European independent index provider

Led the Data Solutions organisation for an independent European index provider. Redesigned the data architecture in parallel with live operations, introduced ITIL v4 and Six Sigma (VoC, CtQ, KAIZEN), and set up a data governance framework fit for the regulatory environment.

Global CRM Cloud Migration — tier-1 global asset manager

Program lead on the migration of local sales systems into a unified cloud CRM on Microsoft Dynamics 365 / Azure. Five main regions (US, Hong Kong, France, UK, Germany) ran parallel cutovers; fifteen country sites in total. Sales processes reworked during the migration, sponsor coalition anchored in the regional heads. Delivered to plan across the five regions; no sales-cycle outage.

Investment Restrictions Program — tier-1 global asset manager

Three-year program migrating asset- and investment-management locations to Bloomberg AIM (Compliance Manager and Violations Manager). Responsible for test planning and governance across trading desks. Adoption protected through parallel-run periods and desk-level reinforcement. Three years, zero live-portfolio incidents.

Every tolerance-breach alert in the run pointed to a person on a desk — a trader who had to stop what they were doing and work with us. That's the adoption cost behind the zero-incident line, staffed for and reinforced week by week.

Co-Founder & Managing Director — Solit Finance

Co-founder and managing director of a consultancy that grew to 110 people over a decade. Led the operational business; acquired, ran, and worked on client programs in financial services and telecommunications. Eleven years of company building alongside hands-on delivery. Solit was the principal vehicle through which the 2010–2021 client programmes listed here were delivered; the mandates from 2022 onward are independent engagements.

Those eleven years shaped the lens through which every mandate since has been read. I ran the P&L, learned the craft of sponsor coalitions, made the hard calls on when to invest and when to stop, and ran M&A screening and negotiations alongside client delivery.

Next Generation IT Architecture — tier-1 European telco group

Principal consultant on the group's Next Generation IT initiative, part of the program-management leadership team. Transformation of the AppCom architecture (CRM & Customer Data Platform) across five countries, cross-country IT licence management, and the design and rollout of the NG IT architecture in Hungary and the Czech Republic. Infrastructure advisory to the regional CTIO/CTO.

Principal Consultant & Head of CRM West — top-tier German IT consultancy

Led an 80-person CRM consulting practice for Germany's west region. Principal consultant on CRM analyses and implementations, with business-development and P&L responsibility for the practice.