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Dmitriy Rychek

@dmitriyrychek

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I build highload backend systems, AI automation tools, and revenue-driving payment platforms.

Ukraine

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I've built and scaled production backend systems for highload platforms serving 5M+ users, 300K MAU, and 2TB databases.

At eKreative, I built AI analytics agents and MCP servers that reduced managers' daily manual analytics requests to developers. I also designed multi-service PHP and Node.js architecture and LLM-powered moderation workflows.

For a parental control platform, I implemented PayPal payments for roughly 8% of users who previously could not pay, helping increase paid subscriptions. I contributed to a microservice platform using Symfony, Node.js, gRPC, REST, MySQL, and Pub/Sub.

Previously at BetInvest, I integrated Oxapay crypto wallet payments, built real-time multi-bookmaker odds aggregation, launched gambling backends from scratch, and mentored two backend developers. I also developed reusable PHP boilerplates and web applications across e-commerce and corporate projects.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

eKreative

Aug 2021 - Present (5 years 1 month)

Built AI-powered analytics assistants and MCP servers, reducing manual analytics requests. Delivered backend features for a highload parental control platform and a messaging automation platform, increasing paid subscriptions via PayPal integration.

PHP Symfony NodeJS gRPC REST MySQL Pub Sub LLM MCP AI Agents Microservices Docker Kubernetes Terraform RabbitMQ

Senior Backend Developer

BetInvest

Feb 2019 - Aug 2021 (2 years 6 months)

Integrated crypto wallet payments via Oxapay, increasing crypto payment share. Developed a multi-bookmaker odds aggregation system and built a reusable backend architecture for mobile gambling apps, reducing development time by ~5 months.

PHP Laravel MySQL NodeJS Playwright ADSPower MongoDB Symfony Crypto Payments backend architecture

Backend Developer

Vintage Web Production

Oct 2017 - Feb 2019 (1 year 4 months)

Developed a reusable Yii2-based boilerplate with modular architecture for e-commerce and corporate projects, enabling faster project delivery. Built web applications and custom systems.

PHP Yii 2 MySQL PostgreSQL Ecommerce Web Development