Christian Hiersemann

Operating Partner | Value Creation · Profitable Growth · Operational Transformation | (PE-backed) B2B Mid-Market

Hannover, Lower Saxony, Germany

About

I turn strategy into measurable results — within (PE-backed) B2B mid-market companies, working directly alongside management teams to drive profitable growth, commercial excellence and operational performance. Over 20 years, I have operated across three vantage points that few combine: international strategy consulting (Roland Berger, OC&C/EY-Parthenon), corporate and business transformation (thyssenkrupp AG, rothe erde business unit, MX segment), and private equity as Operating Partner (Hannover Finanz) — complemented by 20+ PE mandates as advisor to leading investors such as CVC, Ardian and IK among others. This gives me a clear-eyed view of what creates lasting value — and what it takes to implement it under real conditions. My focus areas: profitable growth, commercial excellence, go-to-market strategy, and operational performance improvement. I have led these agendas hands-on: from pricing and commercial transformations to interim leadership during management vacancies driving cost restructuring and a structured recovery plan, to building a fund-level value creation team from scratch — across B2B industrials, Software/IT services, business services and medtech. I care about implementation, not just solid diagnosis — and I measure success by tangible impact on earnings and cash, not the quality of the analysis that preceded it.

Experience

  • Operating Partner at Hannover Finanz
    May 2025 - Present · 1 yr 2 mos

    Hannover Finanz is a DACH-focused private equity firm (~€1bn AuM) investing in B2B mid-market companies across IT services, software, advanced industrials, medtech, and business services. As Operating Partner for Strategy & Growth, I work directly with portfolio management teams to drive and implement value creation — across strategy, profitable growth and commercial excellence. I co-built the fund-level value creation team (10 FTE) within the first five months. Selected engagements: - Pricing & Commercial Excellence | B2B Managed Security Services (€16m+ revenue): Led end-to-end pricing transformation (25+ customer interviews, new pricing model) within 10 weeks. Result: revenue +21% yoy; sales cycle reduced from 9 months to 6 weeks. - Market Expansion | B2B Machinery & Robotics Components (€30m+ revenue): Led go-to-market development to enter new geographies. Result: 10+ qualified new customer leads in the US and China within four months. - Strategy Development | B2B Security Services Division (<€100m revenue): Supported divisional strategy and go-to-market redesign to address structural market shifts. - Interim Leadership & Turnaround | B2B Digital Marketing Group (~€22m revenue, 6 units): Assumed de facto interim leadership during simultaneous management vacancies (no CEO, no CFO). Led stabilization including cost restructuring (~€750k implemented) and 2026–2028 recovery plan presented to financing bank. Planned EBITDA recovery +19% for 2026.

  • thyssenkrupp (Essen · Hybrid)
    • Head of Group Transformation Office (APEX program)
      Aug 2023 - May 2025 · 1 yr 10 mos

      thyssenkrupp is a leading international industrial and technology group (€38bn revenue, 96k staff, 48 countries) operating across Automotive Technology, Decarbon Technologies, Materials Services, Steel Europe and Marine Systems. Led the Group Transformation Office of tk's group-wide performance program "APEX", reporting to the Chief Transformation Officer and anchored directly at Group CEO level. The program was set up to deliver >€2bn in measure volume (~1.2bn realized by 2024/25 and still continuing) to reach defined EBIT and cashflow targets. - Directly steered a team of 15 FTE and managed an external consulting team of up to 35 at peak — acting as client-side lead responsible for delivery quality and prioritization - Drove execution of board-level performance targets into specific program actions across all segments — covering commercial excellence, NPM spend reduction, staff rightsizing and working capital improvement - Served as central interface between tk AG board, segment boards, program teams and key stakeholders including workers council

    • Transformation & Portfolio Development
      Feb 2022 - Aug 2023 · 1 yr 7 mos

      Supported strategic development and performance improvement at two major business units on behalf of tk AG as shareholder: "rothe erde" slewing bearing business (€1bn revenue, 7k staff) and "MX" materials services (€16bn revenue, 15k staff). Developed, adjusted and drove implementation of value creation plans in close collaboration with business unit management — contributing to defined EBIT and restructuring targets within both units

  • Director at EY-Parthenon
    Jan 2018 - Jan 2022 · 4 yrs 1 mo

    EY-Parthenon is one of the world's largest strategy consulting organizations. OC&C Germany was acquired by EY in 2017 and subsequently operated under the EY-Parthenon brand. Senior member of the EMEIA industry practice with focus on Advanced Manufacturing, Building & Construction and Automotive ecosystems. Led corporate engagements and PE mandates (CDDs and Value Creation Plans) for mid-cap companies (€0.1bn–€5bn revenue) across DACH, UK and North America. Built personal client relationships at C-Level, including repeat mandates from clients such as hansgrohe and Velux. - Delivered 15+ corporate growth and transformation engagements, focused on profitable growth, commercial excellence, go-to-market redesign and M&A integration - Executed 20+ PE mandates (CDDs and VCPs) for leading investors including CVC, Ardian, 3i and IK - Developed and maintained C-level client relationships with repeat mandates — including multi-year growth programs at hansgrohe and Velux spanning multiple geographies Selected engagements: - Commercial Excellence & International Rollout | Global Sanitary Ware Manufacturer (€1.1bn revenue, 4.7k staff): Initiated engagement in tandem, subsequently led follow-on projects independently as sole client lead. Implemented holistic "Sales-up" program across UK and USA entities — covering customer segmentation, go-to-market redesign, sales organization and digital tools. Result: double-digit profitable growth (>20% p.a.) sustained over 5 years; approach successfully rolled out to 10+ countries globally. - M&A Integration | Global Residential Windows Manufacturer (€2.5bn revenue, 11.5k staff): Led acquisition support and post-merger integration of a commercial windows manufacturer across 6 countries, working in tandem with a senior partner. Focused on joint go-to-market approach, product landscape alignment and organization integration. Result: €30m+ in synergies realized.

  • Senior Project Manager to Associate Partner at OC&C Strategy Consultants
    Apr 2014 - Dec 2017 · 3 yrs 9 mos

    OC&C Strategy Consultants was acquired by EY in 2017 and subsequently operated under the EY-Parthenon brand. My employment continued without interruption through the acquisition. For a full description of the role, engagements and skills built across the combined OC&C/EY-Parthenon tenure (April 2014 – January 2022), please refer to the EY-Parthenon entry above.

  • Consultant to Project Manager at Roland Berger
    Jan 2008 - Feb 2014 · 6 yrs 2 mos

    Roland Berger is a leading global strategy consultancy of European heritage. Strong legacy in restructuring, performance improvement and transformation. Delivered 10+ holistic restructuring and performance improvement programs across Europe for companies in industrial goods, automotive, retail and TMT — covering situations from initial performance deterioration to near-insolvency and over-indebtedness. Clients ranged from €0.1bn to €10bn in revenue across up to 30+ legal entities in 8 countries. Selected engagements: - Restructuring & Integration | Pharma Distribution & Retail Pharmacy (€21bn revenue, 37k staff, 13 countries): Developed new integrated European strategy and designed greenfield HQ organization for UK operations, merging two separately run wholesale and retail entities (15k staff affected). Result: €140m+ in synergies realized through cost initiatives, productivity increases and growth actions. - Restructuring & Refinancing | Metal Processor (€370m revenue, 3.6k staff): Developed holistic value creation concept, revised BU strategies across 4 business units and supported management through refinancing and full implementation of improvement measures. Result: company successfully stabilized and refinanced; returned to double-digit turnover growth at 5%-pts higher margin.