Dmytro

Dmytro Chumariev Email : [open contact info](look above in the "contact info" section)
Vila Nova de Gaia, Portugal Mobile : [open contact info](look above in the "contact info" section)

Profile
Software Engineer with 7+ years of experience developing large-scale, high-traffic games and enterprise systems.
Expert in .NET (C#) and TypeScript with strong knowledge of performance optimization, cross-platform
development, and scalable architecture. Passionate about building robust systems, improving code quality, and
mentoring teams to deliver measurable results.

Experience
Playtika Kyiv, Ukraine
•
Frontend developer Aug 2021 - Present
◦ Frontend Development: Developed and maintained core UI components for Slotomania and Poker Heat,
ensuring consistent cross-platform experiences across web and mobile.
◦ Technology Migration: Played a key role in a global migration from C# to TypeScript, improving
maintainability and reducing production bugs.
◦ Performance Optimization: Refactored core rendering modules, reducing load times and increasing frame
stability by optimizing asset handling and event flow.
◦ Feature Delivery: Released new game features in two- to three-month cycles, collaborating with product and QA
teams to meet performance KPIs.
Quipu GmbH Kyiv, Ukraine
•
Programmer Analyst Aug 2019 - Aug 2021
◦ Requirements Analysis: Collaborated directly with clients and stakeholders to define functional requirements for
enterprise financial applications.
◦ Software Implementation: Designed and implemented backend modules in .NET and SQL, improving system
scalability and response times.
◦ Support and Maintenance: Diagnosed and fixed production issues, providing timely software updates and user
training sessions.
◦ Process Improvements: Introduced reusable data access patterns and optimized database queries, reducing
query execution time by up to 40%.
Neural Labs Dnipro, Ukraine
•
Junior Software Developer Oct 2018 - Aug 2019
◦ Full-stack Development: Built full-lifecycle applications using C#, Python, and JavaScript, focusing on
data-driven interfaces.
◦ Computer Vision Integration: Integrated OCR (Tesseract) and OpenCV modules to automate text extraction
and image processing workflows.
◦ Collaboration: Worked closely with senior developers to deliver production-ready features in agile sprints.
◦ Innovation: Prototyped and evaluated new frontend frameworks and data visualization tools to improve UX.
JSC CB PRIVATBANK Dnipro, Ukraine
•
JavaScript Developer Apr 2018 – Jul 2018
◦ Application Enhancement: Developed and deployed improvements for internal applications using JavaScript
and Corezoid.
◦ Operational Efficiency: Standardized business workflows and implemented reusable UI logic, reducing bug
frequency and improving team delivery speed.

Education
NTU “Dnipro polytechnic” Dnipro, Ukraine
•
Bachelor of System Engineering Sep. 2015 – Jul. 2019

Skills
• Programming Languages: C# .NET, TypeScript, JavaScript, Python, SQL
• Technologies: Git, Docker
• Languages: English(Professional proficiency), Ukrainian(Native), Portuguese(Beginner)