Blazej Mrozinski, PhD
I build and grow products, bring AI into how teams work, and design psychometric assessments that hold up.
For founders, product and growth teams, and HR and talent leaders. PhD psychometrician and product builder, co-founder of Digital Savages, Gyfted and legitnyhr, and Assistant Professor at SWPS University.
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1.2M
organic users a year for Gyfted, via programmatic SEO with Digital Savages
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4
products I built or co-built, live or in pilot, across legal, health, clinical and edtech
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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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15
peer-reviewed papers, incl. JPSP and Self and Identity
What I do
Two halves of the work, and where each part happens
Building and growing products
From the first scope to live software, AI in the way the team works, and the growth system around it.
Product building
Scoping, product logic, design and an AI-native build of the first working version, as a fractional product lead or a fixed-scope project. Most useful where the domain logic is the hard part.
Prawomat · Symptomatik · KPS · dots
Digital SavagesAI transformation
Workflows redesigned around AI, internal tools and agents a team uses every day, and review steps that keep a person in charge of every binding decision.
An audited AI content pipeline and site plugins for a retail-media AdTech client
Digital SavagesGrowth through search
Programmatic SEO, visibility in AI answers, and site migrations that keep their traffic, for startups in expert-led categories.
1.2M organic users a year at Gyfted · a 1,243-page migration for Prawomat
Digital SavagesPsychometric assessment
Validated assessments delivered as working software, for HR, talent and clinical teams.
Talent assessment
Graduate and volume screening, promotion and leadership assessment, and competency models built on your own framework. Validated before they reach a candidate, with scoring and reports a recruiter can act on.
EPAM · LSEG · gr8.tech · HSE Ireland
GyftedClinical and research instruments
Screening batteries, research panels and staff surveys built end to end: the construct, the scoring and norms, and the secure software that runs them.
10-instrument forensic-psychiatry panel for KPS
badania.orgPay transparency and job evaluation
Job evaluation, grading, worker categories and the gender pay-gap report under the EU Pay Transparency Directive. Every score carries a written rationale, and every report reproduces for an audit.
Pay-gap statistics reproduce the published Polish reference (Liksza, 2024)
legitnyhrWhy these belong together
The two halves need each other. A product that makes decisions about people is only as good as the measurement inside it, and a validated assessment only helps once it runs inside a product people use. Building Digital Savages, Gyfted, Prawomat and Symptomatik taught me the product half. Twenty years of research methodology taught me the measurement half.
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.
Building and growing products
- Building a product With me, through Digital Savages
- AI in your operations Through Digital Savages
- SEO, AI search and site migrations Through Digital Savages
Psychometric assessment
- Hiring or talent assessment With me, on Gyfted
- A custom instrument, built and deployed Through badania.org
- EU Pay Transparency Through legitnyhr
Research
- 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, psychometrician and product builder, co-founder of Digital Savages, Gyfted and legitnyhr, and an Assistant Professor at SWPS University in Warsaw.
What does Blazej Mrozinski do?
Through Digital Savages he builds and grows software products, such as Prawomat and Symptomatik, and leads AI transformation for teams. He also designs validated psychometric assessments for hiring, development and clinical use, and owns the job-evaluation methodology at legitnyhr.
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 your email and I will write back.