Selected work / real project data

Project history from inside real teams.

A portfolio of real engagements across retail, finance, media, travel, automotive, consulting, and industrial software. The pattern is consistent: transformation works when leadership intent, team practice, technical quality, and trust improve together.

20+

Years of Experience

Client Engagements

Companies

2008

Projects Since

Where I tend to help

patterns across projects

Architecture and safer change

Boundaries, state, tests, and architecture that let teams change software without creating a new knot every sprint.

Alignment, incentives, and ownership

Clearer reviews, smaller slices, visible trade-offs, and enough trust between sponsors, middle layers, and teams for change to survive daily pressure.

AI adoption with judgment

Assistants, agents, and automation where the work is clear enough to describe, review, and own. If the process is vague, I fix that before adding AI.

Selected projects

deeper signals from the timeline

A few engagements with enough detail to show the work itself: embedded delivery, architecture, mentoring, and practical change inside existing organizations.

Consultant & Technical Lead

Douglas GmbH

2024-26

Engaged as React expert and consultant to modernise the POS software running in ~1,800 Douglas stores across 26 European countries. Led the rewrite of a business-critical CRM integration from a legacy implementation to a maintainable React architecture, shipped in under a year. Also responsible for the customer care app (Angular, maintenance) and greenfield tooling.

+rewrote the CRM/POS integration in under a year with clearer architecture, more test coverage, and updated documentation
+software runs on every cash register in ~1,800 stores across 26 European countries
+moved from after-hours deployment windows toward safer deployments during business hours through better error handling, observability, and recovery paths
+onboarded 1 senior and 2 junior developers; all productive contributors within weeks
+introduced "Full Stack Fridays", team-driven learning sessions covering Figma prototyping, GraphQL/C#/.NET, and more

Solutions Architect

Oetker Digital GmbH

2022-23

Managed the handover of a Next.js platform from an external agency to a newly formed in-house team, audited the codebase, merged two products, and got the team up to speed.

+audited the codebase and improved quality across the stack: Next.js, TypeScript, GraphQL, Apollo, Cypress, Storybook, Tailwind
+consolidated two separate web products into a single codebase without disrupting active development
+onboarded four new hires in parallel while keeping delivery on track

Technical Architect

Fielmann AG

2021

Rewrote a complex AngularJS optometry workflow app in TypeScript/React, replacing ad-hoc state logic with XState-driven form architecture for in-store staff.

+daily pair-programming as the main knowledge transfer strategy
+state-machine driven multi-step form architecture built to make changes safer
+custom on-screen keyboards tailored to in-store workflows

Engineering Consultant

Interhyp AG

2020-21

Built a real-time communication micro-frontend handling VoIP calls between customers and mortgage advisors, using React, Redux Toolkit and WebRTC.

+doubled as agile coach, introducing practices that noticeably reduced sprint friction
+first production WebRTC integration, shipped without third-party SDK

Frontend Engineer

Lufthansa AG

2017-18

Developed React components for Lufthansa's digital touchpoints, integrated into Adobe Experience Manager.

+accessibility as a hard requirement, not an afterthought
+component library built for editorial reuse across markets

Technical Lead

McKinsey & Company

2014-16

Rearchitected a legacy migration tool, moved to Symfony + React with CQRS-backed data structures, and made changes easier to trace and review.

+introduced CQRS in a PHP project at a time when the pattern was still uncommon there

Fullstack Developer

BMW Group

2013

Built a multi-region dealer evaluation platform for BMW, supporting both customer-facing and internal staff surveys across global markets.

+hierarchical evaluation model: store → local → regional → country, each level saw exactly the data their role required
+first AngularJS application, adopted before the framework was mainstream in enterprise contexts
+multi-region, multi-language rollout across BMW's global dealer network

Project timeline

real engagements, newest first

2024-26Douglas GmbHConsultant & Technical LeadEngaged as React expert and consultant to modernise the POS software running in ~1,800 Douglas stores across 26 European countries. Led the rewrite of a business-critical CRM integration from a legacy implementation to a maintainable React architecture, shipped in under a year. Also responsible for the customer care app (Angular, maintenance) and greenfield tooling.
2022-23Oetker Digital GmbHSolutions ArchitectManaged the handover of a Next.js platform from an external agency to a newly formed in-house team, audited the codebase, merged two products, and got the team up to speed.
2022UXMA GmbH & Co. KGTechnical LeadLed a three-person team building a data-heavy internal web app in TypeScript and React, with a strong focus on mentoring two junior developers.
2021Fielmann AGTechnical ArchitectRewrote a complex AngularJS optometry workflow app in TypeScript/React, replacing ad-hoc state logic with XState-driven form architecture for in-store staff.
2020-21Interhyp AGEngineering ConsultantBuilt a real-time communication micro-frontend handling VoIP calls between customers and mortgage advisors, using React, Redux Toolkit and WebRTC.
2019ProSiebenSat.1 Digital GmbHFrontend EngineerBuilt and maintained React components powering high-traffic show websites for ProSieben and Sat.1 formats, with GraphQL APIs and analytics tracking throughout.
2019InstaMotion Retail GmbHFrontend EngineerBuilt a React + GraphQL web magazine for Germany's largest online car dealer, connected to a headless CMS.
2018Fineway AGFrontend EngineerBuilt components for an online travel magazine using React, TypeScript and GraphQL, backed by Contentful as a headless CMS.
2017-18Lufthansa AGFrontend EngineerDeveloped React components for Lufthansa's digital touchpoints, integrated into Adobe Experience Manager.
2016-17Brückner GroupReal-time Web Systems EngineerBuilt real-time monitoring dashboards served directly on industrial machines, using native web components years before they went mainstream.

If this sounds close to what your team needs, let’s talk.

Send a short note about the team, the transformation pressure, and what breaks between intent and execution. If I can help, I will. If not, I will say so honestly.

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