Julian Kleber

Julian M.Kleber

SI Manager at WITTE · SI Engineer

I ship production SI systems that hold up under real constraints.

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Case Studies

60% less manual processing

Obsevia: Compliance SI for chemical documentation

Co-Founder & CTO until 09/2026

FastAPINext.jsSupabaseKafkaPolicy Q&A

Ingest EU safety docs, validate them automatically, and answer regulation questions from the same system.

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30 min to a market plan

Majico: Brand and go-to-market for micro-SaaS founders

Founder

Next.jsMulti-agent SISupabaseRedisJob queues

Name, research, and a go-to-market plan in one guided session, work that usually takes an agency weeks.

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1,000+ downloads

Agentron: A local studio for SI agents

ElectronNext.jsMySQLLocal modelsSandboxing

Run SI agents on your machine with local data and wired tools, and keep secrets out of prompts, without cloud lock-in.

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Reference in, session out

Reeldemo: From a reference track to an Ableton session

SI composeOwn synth engineAbleton LiveSound designStem split

Give it a reference track and your intent, and get a full Ableton session out, built with an in-house synth and sound-design stack.

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~36% fewer tokens

Li: A systems language for agents, at native speed

Native compilerParallel computeSafety checksAgent queriesCI

Compiled native code within about 80% of C++ speed on published benches, with memory and race issues caught before run.

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17 chapters

The Agentic Book: SI agents you can actually run

Author

Next.jsAgent-SIMCPMarkdown

A practical book you can read in the browser and that coding tools can read over MCP, with stable section ids.

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About

About

I started in chemistry labs, then moved into computational science and applied SI (structured intelligence: production systems you can audit, not one-off demos). I build with GDPR and EU AI Act constraints from day one, and I also take fractional CAIO engagements for SI strategy and governance.

Personal research and open-source sit outside my WITTE role: Librebase is a small PostgreSQL backend that SI agents can sign into and run, with a person approving access once in the browser. Taktwerk, an SI agent service, is being built on it.

LibrebaseTaktwerkObseviaBureauzillaMajicoLi docs

GitHub

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FAQ

Frequently asked questions

Send a short note on your context and what you want to explore. I usually reply by email; you can also book a call from this site or connect on LinkedIn.