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Work experience

React developer, Data analyst

from 03.2023 to now (2 years 5 months)
Jet-Bet, Дистанційно (IT)

Key Responsibilities:
Frontend Development:

Developed a high-performance, fully responsive frontend application using React, TypeScript (strict-mode), fp-ts, and Mantine.

Integrated multiple third-party game providers through their unique APIs into a cohesive ecosystem, embedding game modules via iframe.

Implemented complex user interactions including group chat functionality, user profiles, live betting views, tipping, likes, and achievements.

Applied Feature-Sliced Design (FSD) architecture to enhance scalability, readability, and maintainability of the codebase.

Created comprehensive internationalization logic (i18next) supporting five languages.

Engineered sophisticated animations and UI components such as carousels and an interactive "Wheel of Fortune".

Optimized front-end performance through advanced lazy loading techniques for images (low-res WebP with blur placeholders transitioning smoothly to high-resolution images), significantly reducing render cycles via lazy loading and Suspense.

Conducted SEO optimization through structured HTML semantics, meta tags, alt attributes, and closely monitoring metrics such as CLS and FCP etc..

Analytics & Business Intelligence:

Developed a custom admin panel for integrated analytics on a separate domain, combining transactional data (PostgreSQL) and user behavior analytics (Matomo).

Built detailed dashboards and visualizations (LTV, Churn, GGR, NGR, CPA, CAC) using Power BI and custom dashboards based on Mantine, providing actionable insights for stakeholders.

Enabled support chat management, user moderation, and data integrity verification directly through the admin interface.

Implemented comprehensive user behavior tracking using Matomo, Google Analytics, and Prometheus; conducted funnel analysis and structured A/B tests to inform product decisions.

Machine Learning & Data Science:

Designed and deployed recommendation systems using LightGBM, scikit-learn, Spark, and FastAPI, providing personalized game recommendations based on user preferences.

Performed predictive analytics including customer churn, Lifetime Value (LTV), and Cost Per Acquisition (CPA).

Key Achievements:
Successfully created and delivered a feature-rich, high-load online casino frontend from scratch, seamlessly integrating complex interactive components and multiple game providers.

Led end-to-end implementation of robust analytics infrastructure, significantly enhancing business decision-making capabilities through real-time data insights.

Deployed effective machine learning models to drive user engagement and retention, directly contributing to business growth.

Administrator

from 05.2021 to 02.2022 (9 months)
NewLine, Дистанційно (Фінанси, банки, страхування)

Supervision of operators' work;
Had direct contact with clients to perform large operations;
Monitored the smooth operation of the product;

Team leader

from 01.2020 to 05.2021 (1 year 4 months)
XbiTrade, Запоріжжя (Телекомунікації, зв'язок)

Formed a team: searched for specialists for the team and conducted technical interviews;
Prepared weekly expense and income reports and documented the quality of work of each specialist in the team;
Negotiated with clients;
Estimated the budget;
Determined the scope of work and deadlines;
Participated in the professional development of team members;
Conducted working meetings and meetups;

Education

Запорізька політехніка

ФРЕТ, Кібербезпека, Запоріжжя
Higher, from 2015 to 2021 (6 years)

Здобув вищу освіту за напрямом: "Безпека інформаційних і комунікаційних систем". Маю червоний диплом. Під час навчання перебував у студентських організаціях, брав участь в олімпіадах із програмування та захисту інформації

Additional education and certificates

mlcourse.ai – Open Machine Learning Course

2022-2023, 4 місяці

Stepik: Основи статистики; Введення в Data Science та Machine Learning; Big Data і Data Science;

2022, 9 місяців
Certificate

Knowledge and skills

• Python
• Pandas
• NumPy
• Scikit-learn
• Spark
• CatBoost
• Docker
• MySQL
• MongoDB
• JavaScript
• React
• HTML
• CSS
• SASS
• Git
• Matplotlib
• ETL
• Postman
• Darts
• PostgreSQL
• MS Power BI
• React Redux
• MobX
• REST API
• GraphQL
• TypeScript
• Swagger
• Miro
• Fp-ts
• Mantine
• I18next
• Jest
• Vite.js
• Axios
• Zod

Language proficiencies

• Ukrainian — fluent
• Russian — fluent
• English — above average