Максим

Maksym | Node.js Developer
Contact
[open contact info](look above in the "contact info" section) | Telegram @MaksymSyzonenko​
[open contact info](look above in the "contact info" section) | Kremenchuk, Ukraine

Tech Stack
●​ Node.js ●​ Koa.js ●​ Joi.js ●​ Jest.js ●​ BullMQ

●​ PostgreSQL ●​ MySQL ●​ Redis ●​ RabbitMQ ●​ Cron

●​ Docker ●​ Kubernetes ●​ Nginx ●​ Prometheus ●​ BigQuery

Experience
●​ Dayme Tech – Node.js back-end developer (2023-2026)
●​ Stimex Engineering Group – C# full-stack developer (2022-2023)

I have 3 years of experience developing with the current technology stack. I also have an
additional 1,5 years of experience developing with the .NET platform. Designed and
implemented architecture for high-load services supporting 150,000+ active users and
processing thousands of transactions daily. Built scalable and fault-tolerant solutions that
increased system stability and supported rapid business growth.

Key Achievements
●​ Developed a custom BRE (Business Rule Engine)
●​ Contributed to microservices-based architecture, ensuring service isolation and
independent scalability
●​ Reduced database load by 30–40% through query optimization
●​ Improving API response time from 800 milliseconds to 50-200 milliseconds using
caching in Redis
●​ Migrated critical flows from synchronous to message-driven architecture, reducing
API latency using RabbitMQ
●​ Designed data synchronization flow between transactional DB and BigQuery
●​ Developed a complex CRM (Customer Relationship Management) system

Education

●​ M. Ostrohradskyi Kremenchuk National University — B.Sc. in Computer Science
(2025 Graduate)
●​ English - B2 | Ukrainian - Native