Open to opportunities

Nikolay Melnikov

@nikolaymelnikov

Message

I build high-load Java and Go backend systems for AI-driven recommendation platforms.

Georgia

Message

What I'm looking for

I'm looking to build high-load distributed systems, recommendation services, and AI infrastructure, while contributing to architecture, performance optimization, and backend team leadership.

At VK, I build backend features for VK Clips recommendation services and AI infrastructure, helping evolve distributed systems handling 2.6M RPS at 429ms average latency for a platform serving 10M+ daily active users. Previously at Sberbank, I re-architected a critical data synchronization module with Project Reactor and built a Spring AI assistant that summarizes business requirements and publishes them to Confluence.

At Diasoft, I initiated and delivered a migration to Java 21, created a company-wide Low-Code platform, and led four engineers migrating core infrastructure services. My background also includes automating payroll reporting and crew-notification systems at Rossiya Airlines.

Experience

Work history, roles, and key accomplishments

Machine Learning Engineer

Mar 2026 - Jul 2026 (4 months)

Developed backend features for recommendation services powering VK Clips. Participated in service architecture design, performance optimization, and evolution of distributed systems processing high-volume traffic.

Java Spring Boot PostgreSQL Kafka Machine Learning Recommendation Systems Distributed Systems

Lead Java Developer

Sberbank

Jan 2025 - Mar 2026 (1 year 2 months)

Re-architected a critical data synchronization module using Project Reactor. Developed an AI-powered assistant using Spring AI to automatically summarize business requirements and publish them to Confluence. Co-led a team of 4 backend engineers, overseeing sprint planning and code reviews.

Java Spring Boot Project Reactor Spring AI Confluence Team Leadership Code Review

Senior Software Engineer

Diasoft

Jun 2023 - Jan 2025 (1 year 7 months)

Initiated and executed the migration of the company's tech stack to new Java 21. Designed and delivered a company-wide Low-Code platform (microservice archetype and code generator). Led a team of 4 engineers in migrating core infrastructure services from Java.

Java Spring Boot Microservices Low Code Team Leadership Migration

Java Software Engineer

Rossiya Airlines

Jan 2019 - May 2023 (4 years 4 months)

Automated the generation of crew work-time reports, enabling accounting to process payroll faster and with fewer errors. Built a Telegram bot for real-time crew notifications about schedule changes. Developed and maintained an internal service to automate pre-flight crew.

Java Spring Boot Automation Internal Services