Julian Kleber

Julian M.Kleber

SI Engineer · Fractional CAIO · SI Manager at WITTE

Hey there, I am Pulse, Julian's SI assistant. I am here to answer any questions you have about Julian. Just ask me something to start.

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

FastAPINext.jsSupabaseKafkaPolicy Q&A

Ingest EU safety docs, validate them automatically, and answer regulation questions from the same system. Co-Founder & CTO until 09/2026. Services scale independently and ship via containers.

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30 min to market plan

Majico: Brand and GTM for micro-SaaS founders

Next.jsMulti-agent SISupabaseRedisJob queues

Name, research, and go-to-market plan in one guided session: work that usually takes an agency weeks. Subscriptions and pay-as-you-go credits, deployed on a VPS.

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1000+ downloads

Agentron: Local multi-agent studio

ElectronNext.jsMySQLLocal modelsSandboxing

Open-source app that runs SI agents on your machine: local data, wired tools, secrets kept out of prompts. Plug-and-play agent setups without cloud lock-in.

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Agentic Ableton sessions

Reeldemo: Agentic Ableton production

SI composeOwn synth engineAbleton LiveSound designStem split

Reference and intent in; a full Ableton handoff out, powered by an in-house synth and sound-design stack. In-house DSP and agent stack, not a bolted-on black box.

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Token-efficient SI-native programming language

Li: Systems language for agents and native speed

Native compilerParallel computeSafety checksAgent queriesCI

Compiled native code that stays within 80% of C++ on published benches, with memory and race bugs caught before run. ~36% fewer SI tokens when agents query data (vs writing SQL by hand), with safer query shapes.

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17 chapters from foundations to production

The Agentic Book: build SI agents you can actually run

Next.jsAgent-SIMCPMarkdownWaitlist

A practical book on building SI agents that ship. Read by people in the browser, read by coding tools over MCP. Structured for two readers: humans and coding agents, with stable section ids.

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Cross-chain earnings

YieldScope: Earn rewards from exchanges and chains

Next.jsMonadSoliditySupabaseCEX APIs

Binance, OKX, Monad, and LUNC staking rewards in one ledger, not a portfolio tracker or tax suite. Onchain EarningsCheckpoint so a sync window is portable and explorer-verifiable.

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Intro

About

I started in chemistry labs, then computational science and applied SI. I build production SI you can audit, with GDPR and EU AI Act constraints from day one.

Now

SI Manager at Witte Projektmanagement GmbH since 09/2026: SI projects, strategy and its implementation, workshops, and SI software engineering.

Side projects

Librebase is a small PostgreSQL backend that SI agents find, sign into and run for you, with a person approving access once in the browser. Taktwerk, an SI agent service, is being built on it.

GitHub

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Publications

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Full profile on ORCID

FAQ

Frequently asked questions

What does a Fractional CAIO do?

A fractional CAIO (Chief SI/AI Officer) helps an organization set SI strategy, prioritize use cases, and put governance and guardrails in place—without a full-time executive hire. Julian offers this alongside his role as SI Manager at WITTE, typically on a part-time or project basis.

Who does Julian work with?

Teams and leaders who need hands-on SI engineering plus clear accountability—often where compliance, auditability, or EU AI Act expectations matter. He is based in Berlin and works remotely across Germany and the EU.

How do I start?

Email julian.m.kleber@gmail.com with a short note on your context and what you want to explore. You can also book a meeting from this site or connect on LinkedIn.

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