Stefan Berreth - Co-Founder

Q: Where is Stefan based?

Stefan is based in Kilchberg, Switzerland .

Q: What languages does Stefan speak?

Stefan speaks the following languages: German (Native), English (Advanced), Dutch (Advanced), French (Intermediate) .

Q: How many years of experience does Stefan have?

Stefan has at least 31 years of experience. During this time, Stefan has worked in at least 11 different roles and for 10 different companies . The average length of individual experience is 3 years and 7 months . Note that Stefan may not have shared all experience and actually has more experience.

Q: What is Stefan's latest experience?

Stefan's most recent position is Co-Founder at Stealth AI Infrastructure Deep-Tech Venture .

Q: What companies has Stefan worked for in recent years?

In recent years, Stefan has worked for Stealth AI Infrastructure Deep-Tech Venture , Stealth Wealth-Tech Venture , Villagers Venture Fund , AINab , and DOOR3 .

Q: Which industries is Stefan most experienced in?

Stefan is most experienced in industries like Information Technology , Telecommunication , and Education . Stefan also has some experience in Government and Administration , Professional Services , and Banking and Finance .

Q: Which business areas is Stefan most experienced in?

Stefan is most experienced in business areas like Information Technology , Sales , and Product Development . Stefan also has some experience in Research and Development , Project Management , and Customer Service .

Q: Which industries has Stefan worked in recently?

Stefan has recently worked in industries like Information Technology , Professional Services , and Banking and Finance .

Q: Which business areas has Stefan worked in recently?

Stefan has recently worked in business areas like Information Technology , Customer Service , and Project Management .

Recommended expert

Kilchberg, Switzerland

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Experience

Jan 2025 - Present

1 year 4 months

Co-Founder

Stealth AI Infrastructure Deep-Tech Venture

Deep-tech venture in enterprise AI model compression for on-premises and edge deployment.
Built systematic R&D pipeline, business and technical architecture, early investor pipeline, and design partner network across AI verticals, datacentre operators, and robotics/edge computing — from zero.
Ventures built concurrently, each in a fundamentally different regulatory and technical domain.

Jan 2025 - Present

1 year 4 months

Co-Founder

Stealth Wealth-Tech Venture

Regulation-first private markets wealth-tech platform solving the access and liquidity problem in late-stage pre-IPO shares markets for professional investors and cap-table funds.
Switzerland-based with Swiss SPV structures and optional stablecoin rails.
Built complete business architecture, application architecture, financial models, go-to-market strategy, and investor materials from zero.
Exercising co-founder accountability across strategy, governance, risk, and architecture decisions with personal financial exposure.

Jan 2024 - Jan 2025

1 year 1 month

Business Development & Operations Advisor

Villagers Venture Fund

Fund-level advisory on deal flow operations, pipeline qualification, and operational maturity.
Fund pivoted strategy and disbanded in January 2025.

Jan 2023 - Dec 2023

1 year

EMEA Entity Setup Advisor

AINab

Assembled the complete operational foundation for a foreign principal's Swiss entity setup: corporate structure, banking relationships, regulatory requirements, government registrations, and local service provider network.
Navigated practical obstacles foreign-owned businesses face establishing in Switzerland, acting as the trusted local bridge between international intent and Swiss implementation reality.

Jan 2022 - Dec 2024

3 years

Sr. Principal Consultant / Key Account Manager

DOOR3

Hired to develop European business for a NYC-based professional services firm.
Closed the largest software project in the company's history ($2.4 M, Saudi client).
Recruited the mediating partner into a DOOR3 partnership and built the local GCC pipeline.
Delivered the project through to client sign-off.
Set up EMEA employment and operational compliance through employer-of-record structures.
Built partner-sourced pipeline in GCC markets; company contracted ~30% following the Fed rate cycle and pulled back from international expansion.
Provided hands-on project leadership for enterprise software delivery alongside business development, bridging commercial and technical execution.

Jan 2016 - Dec 2021

6 years

Director of Technical Account Management, EMEA

Tanium

First technical account manager in EMEA, hired for Switzerland during growth from 250 to 2,000+ employees.
Owned complex enterprise accounts end-to-end across geographies; major accounts included Credit Suisse, Adecco Group, SIX Group, Swiss Federal Government (VBS/BIT), Richemont, Hermès.
Platform capable of querying and actuating across 1M+ endpoints in seconds, transforming IT governance, change risk, threat hunting, and large-scale operations.
Mentored and onboarded new hires across Switzerland, DACH, and wider EMEA; held hiring veto authority; team grew to seven.
Led partner enablement with PwC, Verizon Security, Infoguard, and Security Risk Advisors, integrating Tanium into enterprise security and IT operations ecosystems.
SANS FOR508 and SEC504 trained; Tanium Certified Trainer, Operator, and Administrator; contributed to developing Tanium's early training curriculum.
Operational familiarity with CIS, NIST, and ISO 27000 frameworks.

Jan 2014 - Dec 2016

3 years

EMEA Practice Manager, Technical Presales, Cloud & Automation Software

Hewlett Packard Enterprise

Single point of technical authority across HP Software's datacentre and cloud automation stack: server, client, network, storage, process orchestration, and cloud.
Quarterbacked 45+ presales consultants across EMEA, from specialists in major markets to generalists requiring coaching and deal support.
Connected technical field teams, field sales, business development, renewal sales, delivery consultants, country managers, and global product management, marketing, and engineering teams.
Ran cross-geography deal-clinic workshops, coaching local teams through specific deal strategies on the ground.
Drove the region to $35 M annually in new license bookings, exceeding targets by over 30%.
Led and mentored the region's technical presales practice across EMEA.

Jan 2010 - Dec 2014

5 years

Senior Presales Consultant, Cloud & Automation Software, EMEA

Hewlett Packard Enterprise

EMEA SWAT team for emerging cloud and datacentre automation software.
Led value discovery workshops, transformation engagements, and proofs of concept with country teams, partners, and enterprise customers.
Won competitive bid for Lloyds Banking Group: full HP automation suite across Windows, Linux, and AIX.
Created a PoC appliance that reduced system setup from three days to minutes; adopted across presales, product management, engineering, and marketing.

Jan 2007 - Dec 2010

4 years

Senior Presales Consultant, Datacentre Automation Software, EMEA

Opsware → Hewlett Packard

Opened the Opsware office in Zurich as first employee in Switzerland.
Supported deals across EMEA: UBS, ZKB, SIX Group, Swiss Re, T-Systems, Lloyds, O2.
Won seven-figure deals with T-Systems Austria and Zürcher Kantonalbank; supervised implementations and built customer references.
Coached deals from conception to close, equipping frontline sales with technical depth across the portfolio.

Jan 2005 - Dec 2007

3 years

Presales Consultant, DACH & EMEA

Wily Technology → CA Technologies

Delivered bytecode instrumentation for enterprise application performance management in large-scale production web applications across EMEA.
Pooled across direct and indirect territories: Amdocs, DAK, BMW, Raiffeisen Bank, Euroclear, Companies House.
Awarded Presales of the Year 2006 for contributing to the largest Wily Introscope deal in EMEA (Amdocs).

Jan 2000 - Dec 2005

6 years

Head of Technology, R&D & Technical Sales

Weblicon Technologies

Startup delivering carrier-grade mobile data synchronization and enterprise web applications.
Promoted to lead product management and software development.
Built full SDLC processes, automated build pipelines, QA systems, and served as sole technical presales and implementation consultant.
Joined as founding engineer and sole WebObjects/EOF specialist; coached and upskilled the early development team.

Jan 1995 - Dec 2000

6 years

Earlier Engineering Roles

WebObjects & EOF Architect, berlin.de portal (Germany).
Interaction Designer & Developer, Proteon Software (The Netherlands).
System Administrator & Research Assistant, TU Berlin, Department of Physics; built PublicSky, a pre‐Wikipedia collaborative wiki system (1997).

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Telecommunication, Education, Government and Administration, Professional Services, and Banking and Finance.

Information Technology

Telecommunication

Education

Government and Administration

Professional Services

Banking and Finance

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Sales, Product Development, Research and Development, Project Management, and Customer Service.

Information Technology

Sales

Product Development

Research and Development

Project Management

Customer Service

Summary

Strategic advisor with 25 years building, scaling, and leading enterprise technology operations, from co-founding startups through EMEA-wide practice leadership at corporate scale, and a current practitioner. Brings to boards and leadership teams the ability to independently evaluate whether a technology strategy will deliver what its proponents claim, and to translate between technical reality and business decision-making so the right things get funded, built, and governed.

First employee in Switzerland for Opsware and Tanium, operating across their EMEA teams. Led 45+ presales consultants across HP Software's EMEA practice. Drove cybersecurity and IT operations automation engagements at major financial services, government, and luxury goods enterprises across Switzerland, the EU, and the US. Currently co-founding two Swiss ventures: a regulation-first private markets wealth-tech platform and an enterprise AI model compression company.

Skills

Independent Technology Strategy Assessment
Ai, Digital Transformation & Platform Governance
Cybersecurity & Information Risk Oversight (Sans For508 / Sec504, Cis, Nist, Iso 27000)
International Market Entry & Emea Operations Scaling
Technology Compliance & Regulatory Navigation (Dlt, Gdpr, Financial Services)
Venture Building, Technical Architecture & Scaling Operations
Enterprise Software
Cybersecurity
Financial Services
Wealth-tech
Ai / Machine Learning
Cloud Infrastructure
Telecommunications
Government & Public Sector
Luxury Goods

Languages

German

Native

English

Advanced

Dutch

Advanced

French

Intermediate

Education

Technische Universität Berlin

First Diploma in Theoretical Physics · Theoretical Physics · Berlin, Germany

UIAH Medialab, Helsinki (now Aalto University)

Doctor of Arts programme, Doctoral research · Helsinki, Finland

University of Portsmouth and HKU

MEng in Interaction Design / MA in Interactive Media · United Kingdom

Certifications & licenses

SANS FOR508

SANS SEC504

Tanium Certified Trainer, Operator, And Administrator

Tanium

Statistics

Experience

Total positions 12

Experience in Information Technology 31.5 y

Avg length 3 y 4 m

Longest experience 5 y 11 m

Expertise

Recent roles Co-Founder, Business Development & Operations Advisor, EMEA Entity Setup Advisor

Main industries Information Technology, Telecommunication, Education

Main business areas Information Technology, Sales, Product Development

Qualifications

Highest degree Doctorate

Certifications earned 3

Profile

Created

March 2026

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Stefan based?

Stefan is based in Kilchberg, Switzerland.

What languages does Stefan speak?

Stefan speaks the following languages: German (Native), English (Advanced), Dutch (Advanced), French (Intermediate).

How many years of experience does Stefan have?

Stefan has at least 31 years of experience. During this time, Stefan has worked in at least 11 different roles and for 10 different companies. The average length of individual experience is 3 years and 7 months. Note that Stefan may not have shared all experience and actually has more experience.

What roles would Stefan be best suited for?

Based on recent experience, Stefan would be well-suited for roles such as: Co-Founder, Business Development & Operations Advisor, EMEA Entity Setup Advisor.

What is Stefan's latest experience?

Stefan's most recent position is Co-Founder at Stealth AI Infrastructure Deep-Tech Venture.

What companies has Stefan worked for in recent years?

In recent years, Stefan has worked for Stealth AI Infrastructure Deep-Tech Venture, Stealth Wealth-Tech Venture, Villagers Venture Fund, AINab, and DOOR3.

Which industries is Stefan most experienced in?

Stefan is most experienced in industries like Information Technology, Telecommunication, and Education. Stefan also has some experience in Government and Administration, Professional Services, and Banking and Finance.

Which business areas is Stefan most experienced in?

Stefan is most experienced in business areas like Information Technology, Sales, and Product Development. Stefan also has some experience in Research and Development, Project Management, and Customer Service.

Which industries has Stefan worked in recently?

Stefan has recently worked in industries like Information Technology, Professional Services, and Banking and Finance.

Which business areas has Stefan worked in recently?

Stefan has recently worked in business areas like Information Technology, Customer Service, and Project Management.

What is Stefan's education?

Stefan holds a Doctorate from UIAH Medialab, Helsinki (now Aalto University), a Master from University of Portsmouth and HKU and a Bachelor in Theoretical Physics from Technische Universität Berlin.

Does Stefan have any certificates?

Stefan has 3 certificates. These include: SANS FOR508, SANS SEC504, Tanium Certified Trainer, Operator, and And Administrator.

What is the availability of Stefan?

Stefan is immediately available for suitable projects.

What is the rate of Stefan?

Stefan's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.