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justReporting GmbH Wirtschaftsprüfungsgesellschaft

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Sustainability Reporting & Assurance

justReporting is a specialized audit firm (Wirtschaftsprüfungsgesellschaft) focused on sustainability reporting and assurance. We guide mid-market companies through CSRD/ESRS implementation, double materiality assessments, EU Taxonomy reporting, and independent assurance engagements under ISAE 3000. With Big-4 experience and deep regulatory knowledge, we deliver efficient, pragmatic projects with direct access to the auditor. Based in Germany, serving clients throughout the DACH region.

  • Min project size
    $1,000+
  • Hourly rate
    $150 - $199 / hr
  • Employees
    2 - 9
  • Year founded
    Founded 2024

Overview by:

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Jannik Hassel
Founder & Managing Partner (Wirtschaftsprüfer) About the Team

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    Our Story

    justReporting was founded in 2024 by Jannik Hassel, a licensed German auditor (Wirtschaftsprüfer) with over 10 years of Big-4 experience at EY, Deloitte, and PwC. After seeing mid-market companies struggle with complex sustainability regulations, he built justReporting to bring enterprise-level methodology directly to the Mittelstand. As a registered audit firm, we combine consulting and independent assurance – directly with the partner, always accessible.

    Meet the Team

    Jannik Hassel

    Jannik HasselFounder & Managing Partner (Wirtschaftsprüfer)

    Licensed German auditor with 10+ years at EY, Deloitte, and PwC. Specializes in CSRD/ESRS implementation, double materiality assessments, and sustainability assurance under ISAE 3000. IDW working group member.

    What Sets Us Apart

    Consulting + Assurance Under One Roof

    As a registered German audit firm (WPG), we uniquely offer both sustainability consulting and independent assurance. Clients get CSRD/ESRS implementation support and external verification from one partner – ensuring consistency and efficiency throughout the reporting process.

    Big-4 Expertise, Mittelstand Focus

    Our founder brings 10+ years from EY, Deloitte, and PwC – and applies that expertise to the German Mittelstand. You work directly with the auditor, ensuring faster decisions, deeper understanding, and seamless communication throughout every engagement.

    VSME-First for SMEs

    We specialize in the EFRAG Voluntary SME Standard (VSME) – helping smaller companies start with proportionate, audit-ready sustainability reporting before full CSRD requirements apply. Our approach: steer first, then report.

    Commonly Asked Questions

    Yes. As a registered German audit firm (Wirtschaftsprüfungsgesellschaft), we are regulated by the German Chamber of Public Accountants (WPK) and subject to strict professional standards. We comply with GDPR for data handling and follow IDW auditing standards, ISAs, and ISAE 3000 for assurance engagements. Our work on CSRD/ESRS projects ensures clients meet EU sustainability reporting regulations.

    We believe in direct, transparent communication. Every client works directly with the partner – no layers in between. We provide regular status updates, clear milestone tracking, and structured deliverables. For sustainability reporting projects, we typically follow a phased approach: gap analysis, materiality assessment, data collection, report drafting, and assurance readiness review.

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