PW / 2026
WorkServicesAboutGet in touch
PW / Product engineer

Applied AI, product design, and full-stack engineering from Paris.

WorkServicesAboutContact
GitHubLinkedInEmail
© 2026 Philipp WidenfelsParis / CET
Philipp WidenfelsApplied AI + product engineering

From hard idea
to working product.

I design and build AI systems, internal tools, and customer products for teams that need more than a prototype. Based in Paris, working across Europe.

See shipped workStart a conversation

06

cloud providers mapped

45

interactive UI lessons

03

live products below

learnthatui.com
LearnThatUI interactive daily lesson
infr4map / overview
infr4map multi-cloud infrastructure dashboard
Real interfaces. Live now.

Project experience with

Mantu
BNP Paribas
Edmond de Rothschild
L'Oréal
Louis Vuitton
Carrefour
Generali

Selected evidence / 2026

Shipped, not staged.

These are real product surfaces from live or open-source work. Each project combines product decisions, interface design, and the engineering required to make it hold up outside a demo.

LearnThatUI daily challenge with an interactive mobile interface specimen
Live2026

LearnThatUI

A daily visual workout that teaches product-design vocabulary through interactive interface specimens instead of a static glossary.

A complete learning product shipped during OpenAI Build Week 2026.

  • 45 interactive challenges
  • Daily progression and streaks
  • GPT-5.6 redesign studio
Open evidence
infr4map dashboard showing cloud resources and provider health
Open source2026

infr4map

A local-first map that discovers cloud resources and shows how repositories, deployments, domains, and infrastructure connect.

Turns a scattered multi-cloud estate into one explorable system map.

  • Six cloud providers
  • Cross-provider relationships
  • Self-hosted and local-first
Open evidence
Le Tilleul restaurant website showing its garden terrace
Live2026

Le Tilleul

A digital platform for a family-run restaurant: a production website, an editor the team can use, and a private operational finance widget.

A public customer experience and an internal owner tool, delivered as one system.

  • Bilingual production website
  • Team-managed content
  • Bank and POS finance widget
Open evidence
Browse the full project index

How I work

One owner from ambiguity to launch.

The useful part of hiring independently is continuity: the person who questions the brief is also the person who designs the system, writes the code, and sees the release through.

See capabilities

Frame

Find the product inside the brief.

Clarify the user, the operational constraint, and what proof of value should look like before choosing a stack.

Build

Make the risky part real first.

Prototype the hard interaction, data path, or model behavior early, then turn the winning direction into a coherent product.

Ship

Own the last twenty percent.

Responsive QA, accessibility, monitoring, deployment, documentation, and a handoff people can actually operate.

Available for selected freelance work

Bring the messy brief.
We'll make it real.

Tell me what you're building