Blazej Mrozinski, PhD
I build measurement that holds up: validated assessments, pay-equity methodology and evidence-grade products.
For HR and talent teams, clinics and product companies. Psychologist and psychometrician, co-founder of Gyfted, legitnyhr and Digital Savages, and Assistant Professor at SWPS University.
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1,000+
people assessed at EPAM on one validated measurement layer
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Up to 60%
less manual screening for LSEG analyst hiring
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1.2M
organic users a year for Gyfted, via programmatic SEO with Digital Savages
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Patent pending
USPTO, AI matching on a psychometric competencies graph
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15
peer-reviewed papers, incl. JPSP and Self and Identity
What I do
Four kinds of work, and where each one happens
Talent assessment
Assessments for hiring and development: competency batteries, values and personality instruments, career interest tools and cognitive tests. Validated before they reach a candidate, with scoring and matching that turn results into decisions.
EPAM · LSEG · gr8.tech · HSE Ireland
GyftedPay transparency and job evaluation
Job evaluation methodology, grading, worker categories and gender pay-gap reports under the EU Pay Transparency Directive. Every score carries a rationale, and every report reproduces for an audit.
Our own consultant tool, in production
legitnyhrEvidence-grade products and growth
Products where the domain logic is the hard part, such as legal letters and health explanations, and the search architecture that grows them: programmatic SEO, AI search visibility and site migrations that keep their traffic.
Prawomat · Symptomatik
Digital SavagesCustom instruments and research
Diagnostic and research instruments built end to end, from the construct to a secure deployed panel, plus statistical modeling for complex research.
Forensic-psychiatry panel for KPS
badania.orgWhy these belong together
Assessing a candidate, grading a job, explaining a lab result and structuring a legal letter are the same problem underneath: turning a fuzzy human question into something you can measure, check and build on. Twenty years of research methodology taught me how to do that. The businesses are where I apply it.
Selected case studies
The problem, what I did, and what came out of it
How to work with me
I work remotely with teams in the EU, UK and U.S. Most engagements start with a 30-minute call to check fit.
- Hiring or talent assessment Through Gyfted
- EU Pay Transparency Through legitnyhr
- SEO, AI search and site migrations Through Digital Savages
- A custom clinical or research instrument Through badania.org
- Product or measurement leadership Directly with me
- Research collaboration Directly with me
Selected clients & partners
Businesses
Three companies I co-founded and work through
Also: co-founder of dots, custom instruments through badania.org, and an academic home at SWPS University since 2006.
Writing
Psychometrics in practice, product decisions, and building with AI
About Blazej Mrozinski
A quick primer for anyone who just searched my name.
Who is Blazej Mrozinski?
Blazej Mrozinski is a PhD psychologist and psychometrician, co-founder of Gyfted, legitnyhr and Digital Savages, and an Assistant Professor at SWPS University in Warsaw.
What does Blazej Mrozinski do?
He designs validated assessments for hiring and development, job-evaluation and pay-gap methodology for EU pay transparency, and evidence-grade products such as Prawomat and Symptomatik.
Where is Blazej Mrozinski based?
He is based in Warsaw, Poland, and works with organizations in the U.S., UK and EU.
Let's talk
If any of this maps to a problem you are working on, pick a 30-minute slot. Expect a conversation about what you are trying to solve.
Prefer writing? Leave a message below and I will reply.