Fractional COO / HoO • AI in Operations • Berlin

I run and upgrade consumer operations. AI, systems, supply chain, and execution.

Independent senior operator for DACH consumer SMBs, PE-backed businesses, DTC, and hospitality companies with €10–100M revenue. Fifteen years building supply chain, procurement, ERP, fulfillment, customer service, and AI-enabled operations. Available as Fractional COO, Head of Operations, or for focused AI-in-operations deployment. Most recent deployment: 85% support ticket reduction in 4 weeks.

Book a 30-min Call See Case Studies
Liem Chatjellis, Fractional COO and Head of Operations, Berlin
What I do

Two ways to work with me.

Productized engagement

AI in Operations

6–10 week deployment • from €40k fixed

AI does not fail in operations because the model is weak. It fails because the use case, process, data flow, ownership, and handover were badly scoped. I select and deploy one high-impact AI capability inside live operations, with ROI logic, vendor decision, integration scope, operating cadence, and handover.

Included
  • Use case selection across operational functions (customer service, procurement, demand planning, returns, fulfillment, reporting)
  • ROI model and success metric
  • Vendor and tooling decision; integration against your existing stack
  • Deployment, monitoring, and operational handover
Not included
  • Custom model training or proprietary LLM hosting
  • Software engineering or platform build
  • Long-term managed operations after handover
  • Multi-use-case rollout (this is one capability done well)
Book a Discovery Call
Fractional engagement

Fractional COO / Head of Operations

8–12 days/month • 6-month minimum • monthly retainer

COO-level operating capacity for consumer SMBs that need senior execution but do not yet need, cannot yet justify, or are between full-time executive hires. I take ownership of the operating rhythm, KPI scorecard, team cadence, systems decisions, vendor base, and AI-in-operations roadmap. Founder-led and PE-backed DACH consumer companies.

Included
  • Ownership of operations KPIs, weekly cadence, and execution rhythm
  • Supply chain, procurement, fulfillment, customer service, and vendor performance
  • ERP, EDI, systems, reporting, and process governance
  • AI-in-operations roadmap with quarterly delivery
  • Founder, CFO, or PE sponsor sparring on operational priorities
Not included
  • Full-time exclusivity
  • Brand, marketing, or product ownership
  • Pure advisory without operating responsibility
Book a Discovery Call
Case studies

Selected work.

AI customer service deployment, Les Lunes

Customer service volume growing faster than headcount; resolution time creeping; founder team overloaded.

85% reduction in manual support tickets. Payback in 4 weeks.

Procurement ERP and cost reduction, numa Group

30+ European properties on disconnected procurement workflows; no single source of truth for spend or supplier performance.

€30M procurement consolidated across 30+ properties. 10% cost reduction.

UK retail launch from zero, Mia & Ben

DACH organic baby food brand entering UK retail; no UK supply chain, no EDI integration, no listings.

UK supply chain built from zero. Live in Sainsbury’s and Ocado in 8 weeks.

Track record

Where I have built.

2025 to 2026
Deployed AI customer service. 85% reduction in manual tickets. Payback in 4 weeks.
Director of Operations • Les Lunes GmbH • Berlin
Full P&L for supply chain, warehousing, fulfillment, and customer service across all distribution channels.
2025 to 2026
Built GTM strategy, ICP, sales collateral, investor materials, positioning narrative, and buyer validation across 30+ enterprise conversations.
Co-Founder and Head of Strategy • WorkingAgents • Berlin
Wound down on good terms in April 2026.
2022 to 2024
Built procurement ERP across 30+ properties. €30M annual budget. 10% cost reduction.
Director of Procurement • numa Group GmbH • Berlin
ERP from scratch with real-time spend visibility. SOP enforcement across European markets. Reported to CFO.
2020 to 2022
30% inventory reduction across 3 brands. Unified supply chain post-restructuring.
Head of Supply Chain and Operations • Invincible Brands GmbH • Berlin
€25M budget. Multi-brand operations across DACH, France, Italy. Two additional brands integrated with zero operational disruption.
2019 to 2020
UK retail launch built from zero. Live in Sainsbury’s and Ocado in 8 weeks.
Director of Supply Chain • Mia and Ben Organic GmbH • Berlin
ERP and EDI implementation. Chilled supply chain across 3 markets. Food safety certifications secured.
2017 to 2018
ERP to beta phase. Demand planning and inventory management from zero.
Director of Supply Chain and Operations • 99chairs GmbH • Berlin
Process digitalization for furniture e-commerce.
2013 to 2016
€5M cost and working capital reduction. 7,000+ title library logistics.
Manager Logistics • STUDIOCANAL (CANAL+ Group) • Berlin
DVD and Blu-ray production, distribution, and retail delivery workflows.
2008 to 2012
Logistics foundation across renewables and smart home.
PegoSolar • Salus Controls • Berlin
Earlier operational roles.
About

COO-level operator for consumer businesses in transition.

Independent operator based in Berlin. Fifteen years inside consumer operations across DTC, FMCG, hospitality, procurement, ERP, fulfillment, and customer service.

I work with founders, CFOs, and PE sponsors when operations have become too complex for founder-led management but too early, too urgent, or too specific for a conventional full-time executive hire.

Available as Fractional COO, Head of Operations, or for focused AI-in-operations deployment.

Berlin, Germany. German and Greek native speaker, fluent English. Lean Six Sigma Black Belt.

Liem Chatjellis
Contact

Let us talk.

The fastest way is a 30-minute call. Email is fine.

Phone
+49 170 117 2326
Location
Berlin, Germany
Book a 30-min Call Send an Email