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Janet Brönstrup (geb. Haupka)

Janet Brönstrup (geb. Haupka)

Executive Advisor | People & Leadership Professional | Mentor | Sport Enthusiast | DEI Advocate & Ally

Berlin Metropolitan Area, GermanyManagement Consulting
Company
Stealth Mode
Title
Angel Investorin
Seniority
Founder
Department
Master Operations
Location
Berlin Metropolitan Area, Germany
Industry
Management Consulting

About

I'm Janet - Executive Advisor, People & Leadership Professional, Mentor, Sports Enthusiast and DEI Advocate & Ally. I support organizations, startups, and NGOs as an experienced HR and People leader through growth, transformation, and critical inflection points. As an Interim CHRO / Head of HR, I combine strategic vision with hands-on execution, enabling both people and organizations to reach their full potential. My experience spans scaling high-growth companies from 50 to 800 employees within three years, including the design of end-to-end HR structures, processes, and leadership programs, as well as guiding organizations through complex phases such as restructuring and transformation with clarity, humanity, and precision. I build organizations where performance and culture don’t compete, they reinforce each other.

Experience

Co-Founderin

Stealth Mode

Present

Angel Investorin

Joy · Berlin, Germany

Present

My first angel investment (yay!), and one I'd already used myself before investing! I've known Joy_'s product for years and have witnessed firsthand how well it's received by teams and how easy it is to use. When I then had the opportunity to meet the two founders and experience the clarity, energy, and determination with which they approach everything, I knew I had to be a part of it. It's precisely this combination of a strong mindset and a relevant (people-centric) solution that convinces me as an investor. Their pitch on "Die Höhle der Löwen" (the German version of "Shark Tank") was a special moment and just another step on a very exciting journey. In addition to my investment, I actively support the team with HR, hiring, and people-related topics to create sustainable structures for growth. I invest in people who want to make a difference and in solutions that deliver results. If you're passionate about strong founding teams and cool solutions: Check out Joy_. https://www.youtube.…

Founding Member

Seed Society

Present

I wanted to get into angel investing for a long time, but I lacked the right entry point and the necessary know-how. When I saw Felix's call for participants (he's an operational angel investor in the Berlin startup scene), I knew immediately: This is exactly where I want to be involved and help shape things! As a founding member of Seed Society, I'm actively involved in building the community and developing new formats and initiatives related to angel investing. I've been active in the startup world for over a decade and am now excited to support strong teams and impactful initiatives on their growth path as an angel investor as well! Let's get the party started!

Shareholderin & Managing Partner

DONE!Berlin GmbH · Berlin Area, Germany

www.doneberlin.com DONE!Berlin is a German-based, internationally operating boutique consultancy that supports companies of all sizes in navigating the ever-changing world of work, with a focus on People & Culture topics. We provide custom market solutions delivered by effective squads of specialized industry experts and top-tier consultants in the fields of Interim Management, Talent Acquisition, People Operations, Organizational Design, Change Management, Culture Development, Benefits Consulting and HR Software Implementation.

Interim Head of Hr I Pharmahera Service Gmbh

DONE!Berlin · Berlin Metropolitan Area

Interim Head of Hr I the Quality Group

DONE!Berlin · Berlin, Germany

Interim Head of Hr I Tierarzt Plus Partner

DONE!Berlin · Berlin, Germany

Interim Head of Hr I 8fit

DONE!Berlin

Sr. Consultant

DONE!Berlin GmbH · Berlin Area, Germany

Shareholderin & Co-Founderin

DONE!Financials Group

Hr Excellence Consultant

KPMG · Berlin Area, Germany

Hr Project Manager

N26 Group · Berlin Area, Germany

Hr Business Partner

N26 Group · Berlin Area, Germany

Hr Manager

Angel.ai · Berlin

International Talent Acquisition Specialist (Exit)

Treatwell · Berlin & Amsterdam

Trainee Human Resources & Sales

persona service Verwaltungs AG & Co. KG · Halle (Saale), Deutschland

Education

Hochschule Merseburg

Master of Arts (M.A.), Project Management

Hochschule Merseburg

Bachelor of Arts (B.A.), Business Administration

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