Impact Team

Experts, creators and innovators,

helping to turn good intentions into measurable social change.

Methodologists, data analysts and product people connecting social impact with technology.

Core team

Hana Stelzer

CEO & Founder

stelzer@impactso.com LinkedIn

20+ years at the intersection of social impact, ESG and sustainable development.

·Led one of the largest Czech advocacy networks focused on equality, social impact and inclusion.
·Former member of the Government Council for Sustainable Development.
·Deep expertise in impact measurement, fundraising and stakeholder engagement.
·Worked with hundreds of NGOs, foundations and corporate CSR initiatives.

Founder–market fit

For over 20 years, Hana has watched organizations create positive change while rarely being able to measure or credibly evidence the results.

Impactso was founded to solve exactly that — enabling organizations to measure, manage and report social impact as systematically as they manage their finances today.

Ondřej Tyle

Technical Development Lead

info@impactso.com LinkedIn

Engineer in Cybernetics and Robotics (ČVUT), with a background spanning software development, AI, and applied technology for social impact.

·5+ years building and running Digitální Vnuk, his own nonprofit focused on digital and financial literacy for seniors.
·Experience across the full stack: architecture, databases, and modern web development.
·Applies AI tools across product and operational work.
·Works as a mentor and trainer in digital skills for SMEs and individuals, helping them optimise work processes and save hours every day.
·Combines an engineering foundation with hands-on nonprofit leadership, bringing both technical rigor and lived understanding of the social sector.

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