Vladimir N.
Psychometric Specialist
Experience
Jan 2020 - Present
5 years 11 monthsFreelance Data Scientist
Various Clients
- Conducted ordinal logistic regression analysis for Truity examining Big Five personality traits and AI attitudes using Python (mord, scikit-learn)
- Delivered statistical summaries with coefficient interpretations and model diagnostics (accuracy range: 30–69%)
- Developed custom R Shiny applications for psychometric research, survey analytics, and business intelligence
- Provided statistical consulting in Factor Analysis, reliability testing, and scale development for research projects
Jan 2015 - Dec 2025
11 yearsLead Data & Business Analyst
NERIS Analytics / 16Personalities.com
- Led data analytics and psychometric research for one of the world's most popular personality assessment platforms, serving millions of users across 40+ languages
- Designed and validated statistical models for personality assessment using Factor Analysis, Item Response Theory, and Structural Equation Modeling
- Analyzed datasets containing millions of personality test responses using R, SPSS, and custom statistical pipelines
- Built advanced models using R (lavaan, psych, mirt) for trait measurement, reliability analysis, and predictive modeling
- Architected and built 16 comprehensive monitoring dashboards covering all aspects of platform operations including user behavior, test completion rates, conversion metrics, team performance, technical health, and business KPIs
- Connected SurveyMonkey to Tableau for automated survey data visualization and analysis, enabling real-time feedback monitoring across multiple departments
- Developed data-driven strategies using Tableau, Google BigQuery, and custom BI solutions for strategic decision-making and stakeholder reporting
- Created enterprise-grade internal tools in R Shiny for automated psychometric analysis, reducing analysis time from days to hours
- Designed and executed large-scale quantitative research studies on personality types and human behavior patterns
- Built specialized dashboards for team performance monitoring, engagement tracking, and productivity metrics
- Established best practices for reproducible analysis workflows and statistical validation protocols
- Technologies: R, SPSS, Tableau, SQL, Google BigQuery, Shiny, ggplot2, plotly, lavaan, psych, mirt, SurveyMonkey API, Git
Jan 2014 - Present
11 years 11 monthsFounder & Lead Developer
SportPersonalities.com
- Architected and developed a 183,000+ line full-stack codebase (PHP, JavaScript, SQL) with modular design patterns and separation of concerns
- Designed a unified API interface supporting Claude Sonnet 4.5, GPT-4, and Gemini with automatic failover and batch processing capabilities
- Developed an automated athlete personality classification algorithm with 85%+ confidence scoring across four psychological dimensions
- Built a psychometric quiz generator with a three-phase workflow (scales → questions → outcomes), quality scoring, and statistical validation
- Engineered an automated data collection system processing 1000+ athlete profiles from multiple sources using the ScrapeOps API
- Designed a custom MySQL schema with a caching layer reducing API calls by 90%
- Implemented a GDPR-compliant analytics system with IP hashing, consent management, and right-to-erasure functionality
- Created an intelligent social media posting system with platform-specific caption optimization and Instagram carousel generation
- Built a job queue management system (Redis, Bull) handling 100+ concurrent AI requests with status tracking
- Integrated 11 external APIs (Anthropic, OpenAI, Google, Stripe, Pexels, ElevenLabs, social media platforms) with unified error handling
- Developed a newsletter campaign system with queue management, GDPR tracking, and weekly automated content curation
- Implemented caching strategies, database indexing, and lazy loading reducing page load times by 60%
- Technologies: PHP 8.1+, JavaScript (ES6+), MySQL, WordPress, Claude API, GPT-4 API, Gemini API, GD Library, FFmpeg, Composer, Git
Summary
I am a psychometric specialist and transformation coach with over a decade of experience helping people achieve balanced well-being through personality-driven behavior change. I blend academic training with hands-on data science and analytics in psychometric research, using tools like R, Python, and Tableau to build robust models and digital solutions.
I have worked on large-scale research studies and developed custom applications that enhance both personal and professional growth. By linking psychological insights with technical expertise, I create practical, lasting improvements in human behavior and overall performance.
Languages
Bulgarian
NativeEnglish
AdvancedEducation
Sofia University "St. Kliment Ohridski" - Faculty of Philosophy and History
Bachelor of Arts in Psychology · Psychology · Sofia, Bulgaria
Sofia University "St. Kliment Ohridski" - Faculty of Philosophy and History
Master of Arts in Social Psychology · Social Psychology · Sofia, Bulgaria
Certifications & licenses
Certificate In Sport Psychology For Athletes Development
Barça Innovation Hub (FC Barcelona)
ISSA Exercise Recovery Specialist
International Sports Sciences Association
ISSA Nutrition & Fitness Coach
International Sports Sciences Association
ISSA Transformation Specialist
International Sports Sciences Association
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