Ruslan Schdanov

• Built an event-driven system for genetic data processing (Spring Boot, PostgreSQL, AWS ECS), owning architecture, deployment, and maintenance. • Led integration of three platforms, resolving data inconsistencies. • Migrated a key service to AWS Lambda, cutting cold start from 4.5s to 0.8s. • Optimized AWS infrastructure, CI/CD, CloudFormation, SQS, and SNS. • Improved stability with 80% test coverage, Flyway, and BDD (Cucumber). • Developed a UI for genetic data visualization (Angular, TypeScript).

• Redesigned the platform's Back-End (Spring) and Front-End (Vaadin) components using the MVP pattern, improving maintainability and eliminating duplicate event production. • Upgraded the service platform version and migrated BDD tests from Cucumber to Vaadin TestBench, resolving UI bugs caused by outdated libraries and eliminating random CI/CD test timeout failures. • Fixed and optimized AWS Lambda functions (Python, Pandas), improving data processing efficiency for high-resolution medical images.

• Developed an automated dynamic document generation service from scratch (Spring Boot, Docx4j, XSLT), reducing manual creation time from 3–4 days to half a day. • Maintained and enhanced backend services (Spring, PostgreSQL, Kafka), ensuring system stability and efficient data processing.

• Supported the migration from an Oracle-only database to a multi-database architecture supporting Oracle and PostgreSQL, dynamically scaling based on request volume. • Optimized data processing, accelerating form loading by 1.8–3.2 times through bottleneck analysis and parallel execution.

• Developed and maintained a service for laboratory evaluation of non-destructive testing results using a NoSQL database architecture with MongoDB. • Transitioned the service from Java to Kotlin, improving code efficiency and aligning with project requirements.

• Launched and scaled a B2B product from scratch, defining the product roadmap, managing a team of up to 5 people, and optimizing supply and distribution for high-precision geospatial survey equipment. • Led product discovery and CustDev, conducting 300+ technical presentations across multiple cities to refine value propositions and improve market fit. • Managed the product backlog and feature prioritization, overseeing the team’s execution to align development with customer needs and business goals.