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← All stealth founders

Founders in Hamburg who just went stealth

10 founders in Hamburg started a company in stealth in the last 1783 weeks.

Showing 10 of 10 founders
Left
Re-entry.ai
CEO & Co-Founder
Before that
Went stealthSep 2026
Work
  • CEO & Co-Founder at Re-entry.ai2025-2026 · left Aug 2026
  • Project Manager at Berylls by AlixPartners2023-2024
  • Chief of Staff to Chief Strategy Officer VW CV (CSO) at Volkswagen Group2016-2023
Education
  • Columbia University
  • Rotterdam School of Management, Erasmus UniversityMaster's
  • Universiteit Twente / Twente UniversityBS
Left
Associmates GmbH
Kubernetes & Cloud Native Consultant
Before that
Went stealthSep 2026
Work
  • Kubernetes & Cloud Native Consultant at Associmates GmbH2023-2023 · left Dec 2023
  • Senior Software Engineer, Kubernetes & GitOps at Weaveworks2022-2023
  • Senior Software Engineer, Kubernetes at D2iQ2019-2022
  • Fullstack Software Developer at Hermes Germany GmbH2017-2019
  • Fullstack Software Engineer at Just Software AG2010-2017
  • Consultant at syngenio AG2008-2010
  • Intern - software development at freiheit.com technologies2007-2007
Education
  • Hamburg University of Applied SciencesMS
  • Bonn-Rhein-Sieg University of Applied SciencesBS

Carlos Gienow

Co-Founder
Left
Blockbrain
Pre-Sales Lead
Before that
Went stealthAug 2026
Work
  • Pre-Sales Lead at Blockbrain2024-2026 · until Aug 2026
  • Growth & Partnerships at Lando Health2024-2024
  • Founder's Associate at vertic ventures2023-2023
  • Product Strategy at AUDI AG2022-2022
  • Gründer & Geschäftsführer at Carma Insights GmbH2019-2022
  • Program Management Office at Ogilvy2019-2019
Education
  • WHUMS
  • University of Michigan
  • Lund University
Left
FANtium
Tech & Product Lead (interim)
Before that
Went stealthAug 2026
Work
  • Tech & Product Lead (interim) at FANtium2022-2022 · left Oct 2022
  • Co-Founder at happyglam2020-2021
  • Full Stack Developer at Moonfare2018-2020
  • Manager Marketing & Operations at VERTS Mediterranean Grill2017-2018
  • Head Of Marketing (interim) at Legaly2017-2017
  • Visiting Associate at Monitor Deloitte2016-2016
  • Product Manager at BMW Group2015-2015
Education
  • WHUBS
  • University of HamburgMD
  • The University of Texas at AustinBachelor's
Left
CITO
Entrepreneur in Residence Intern
Before that
Went stealthJul 2026
Work
  • Entrepreneur in Residence Intern at CITO2026-2026 · until Aug 2026
  • Strategy & Growth Intern at yoummday2025-2025
  • Working Student at OMR2024-2025
  • Tax and Audit Intern at Goessler Partner GmbH2023-2023
Education
  • Berufliche Schule Am LämmermarktAbitur
  • WHUBS
  • Bucerius Law School

Med. Viyan Sido

Founder in Longevity
Left
Asklepios
Medical Doctor
Before that
Went stealthJul 2026
Work
  • Medical Doctor at Asklepios2023-2025 · left Aug 2025
  • Cardiac Surgeon at Immanuel Klinikum Bernau Herzzentrum Brandenburg2021-2023
  • Clinical Reviewer at TÜV SÜD2021-2021
  • Resident Doctor at Charité - Universitätsmedizin Berlin2017-2021
  • Resident Doctor in Cardiology at Universitätsklinikum Bonn2012-2017
Education
  • chariteberlin
  • Paracelsus Medizinische PrivatuniversitätMaster's
  • University of BonnMD

Oliver Engelken

Founder & CEO
Left
brandnooz Media GmbH
Leiter Marketing und E-Commerce "Chief Marketing Officer" (CMO)
Before that
Went stealthJul 2026
Work
  • Leiter Marketing und E-Commerce "Chief Marketing Officer" (CMO) at brandnooz Media GmbH2025-2026 · left Feb 2026
  • Chief Marketing Officer (CMO) at Torquato2025-2025
  • Geschäftsführer (CDO inkl. CMO Rolle) at Kabs2013-2024
  • Praktikant E-Commerce und Online Marketing at OTTO2011-2011
  • Praktikant Strategie /Controlling Otto Polen at Otto Group2011-2011
  • Praktikant Business Development at Vitabote GmbH2010-2010
Education
  • Leuphana Universität LüneburgMA
  • Leuphana Universität LüneburgBA
  • Fachoberschule Wirtschaft und Verwaltung Stade

Irena Makar

Co-Founder
Left
XING
Senior Software Engineer
Before that
Went stealthJul 2026
Work
  • Senior Software Engineer at XING2020-2026 · until Jul 2026
  • Software Engineer at XING Marketing Solutions - part of NEW WORK SE2018-2020
  • Software Engineer at mindmatters GmbH & Co. KG2016-2017
  • Ruby on Rails Developer at Toptranslation GmbH2012-2016
  • Salesforce.com Force.com Developer at Symphony Solutions2009-2011
Education
  • National University 'Ivan Franko' , LvivMS
Left
amberra
Venture Capital
Before that
Went stealthJun 2026
Work
  • Venture Capital at amberra2025-2026 · left Mar 2026
  • Bachelor Thesis at Sauber Group2025-2025
  • Value Stream, Aerodynamics at Audi Revolut F1 Team2025-2025
  • Business Development at SYZYGY AG2023-2024
Education
  • BSP Business & Law SchoolBS
  • UC Santa BarbaraBS
  • Technische Universität HamburgBS
Left
Tibber
Managing Director - Germany
Before that
Went stealthMay 2026
Work
  • Managing Director - Germany at Tibber2023-2026 · left Apr 2026
  • Head of Venture Development & Portfolio Management at Viessmann Generations Group2018-2023
  • Entrepreneur In Residence at Quarters Co-Living2016-2018
  • Interim Managing Director at Jumia Group2015-2016
Education
  • Copenhagen Business SchoolMS
  • Grenoble Ecole de ManagementBS
  • Rijksuniversiteit GroningenBS

Built on Crustdata. Build your own.

Crustdata tracks hundreds of millions of professional profiles. This directory is one saved search: "current title includes founder, current company is Stealth", re-run every week. Point the same search at your own market.

Get an API key
# the one request behind this page
curl https://api.crustdata.com/watch/person/search \
  -H "authorization: Bearer $CRUSTDATA_KEY" \
  -H "x-api-version: 2025-11-01" \
  -d '{
    "filters": { "op": "and", "conditions": [
      { "field": "experience.employment_details.current.company_name",
        "type": "[.]", "value": "stealth" },
      { "field": "experience.employment_details.current.title",
        "type": "(.)", "value": "founder" }
    ]},
    "fields": ["basic_profile", "experience", "education"],
    "config": { "trigger": { "type": "interval", "every_hours": 168 } }
  }'
# [.] = exact phrase, (.) = all words. Each week it returns only the new matches.

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About this list

What "stealth" means here: the person's current job is a founder title (Founder, Co-Founder, Founder & CEO…) at a company listed as "Stealth", "Stealth Startup" or similar, because they haven't announced it yet.

Where it comes from: public professional profiles, via the Crustdata API. A new search runs every week and adds whoever newly matches. Profiles can take a few weeks to show up, and start dates are by month.

The company on each row is the most recent job before going stealth, with the title they held there. Where we can, we skip internships, advisor seats and freelance stints. On a "former employer" page it shows the job at that employer instead. Click a row for their full work history and education.