Dmytro User
@dmytrouser2
Backend Software Engineer at an NDA Web3 platform who scaled a game, marketplace, and wallet to 100,000+ daily active users.
UkraineWhat I'm looking for
At an NDA Web3 platform, I led core backend development for its flagship project. I built the backend for a mobile game, marketplace, and wallet that supported 100,000+ daily active users without downtime.
I optimized database schemas and PostgreSQL queries, reducing average API response times by 50%. I also developed smart contract event listeners with AWS SQS to process up to 100,000 blockchain transactions per hour.
At CIDT, I built unified APIs for mobile and web products and developed statistical aggregation systems that improved departmental efficiency by 25% monthly. I also deployed AWS Lambda serverless solutions and refactored a role-based permission system.
At Ralabs, I improved microservices security and performance, and created XML integrations. Earlier, I developed REST endpoints and search features, built an anti-piracy scraping system, and optimized MySQL queries.
Experience
Work history, roles, and key accomplishments
Backend Software Engineer
NDA - Web3 Platform
Jun 2023 - Present (3 years 4 months)
Led core backend development for a Web3 startup's flagship project, architecting API infrastructure and optimizing database schemas to reduce response times by 50%. Engineered backends for a mobile game, marketplace, and wallet, handling 100,000+ daily active users and processing up to 100,000 blockchain transactions per hour.
Backend Software Engineer
CIDT
May 2024 - Jan 2025 (8 months)
Built unified mobile and web APIs from scratch and developed statistical aggregation systems that improved departmental efficiency by 25% monthly. Deployed serverless solutions with AWS Lambda and refactored a role-based permission system to enhance security and access control.
Backend Software Engineer
Ralabs
Oct 2021 - Jul 2023 (1 year 9 months)
Enhanced microservices security and developed standardized logging across services. Optimized software performance, resolved bottlenecks, and created XML integration methods, while authoring documentation and mentoring new team members.
Junior Backend Software Engineer
Admiral Studios
Jul 2021 - Sep 2021 (2 months)
Developed new RESTful endpoints and implemented search functionalities using NestJS, PrismaORM, and Docker.
Junior Backend Software Engineer
eleaticsrecords.com
Feb 2021 - Jul 2021 (5 months)
Engineered a custom anti-piracy scraping system from scratch using Node.js and Express.js to identify unauthorized music distribution.
Software Engineer (Intern to Junior)
Quantox Technology
Aug 2020 - Jul 2021 (11 months)
Optimized database queries by implementing strategic indexes on frequently accessed tables using MySQL and PHP/Laravel.
Education
Degrees, certifications, and relevant coursework
National University “Yuri Kondratyuk Poltava Polytechnic”
Master's Degree, Computer Science
2025 -
Pursuing a Master's degree in Computer Science, expected to complete in 2026.
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
Bachelor's Degree, Acoustic Electronic Systems & Information Processing
2017 - 2021
Earned a Bachelor's degree in Acoustic Electronic Systems and Information Processing from 2017 to 2021.
Oxford School of English
Student
2020 - 2020
Attended as a student during July and August 2020.
Tech stack
Software and tools used professionally
Availability
Location
UkraineAuthorized to work in
Salary expectations
Job categories
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