Aleksandr Zhiltsov Email & Phone Number

Limassol, Cyprus

Developed a healthcare project for screening from scratch with a distributed architecture using Google Cloud Platform and RDF Triplestore for graph navigation via SPARQL. The entire project was divided into modules on Spring Boot with interconnection through REST/RabbitMQ and OAuth2 for authorization. - Led the initial planning and architectural design, selecting appropriate frameworks and services.- Maintained the project environment on Google Cloud and Kubernetes, preparing and configuring the CI/CD process. - Conducted thorough code reviews of merge requests from team members. - Engaged in regular discussions with the product owner to define new features and optimal implementation strategies. - Designed and implemented a system handling 500 million triplets in production. - Achieved rapid performance with the capability to invoke over 4,000 SPARQL requests in just 5 seconds for user evaluation tasks. - Implemented scalable workers and a RabbitMQ task system for background tasks.

Novosibirsk, Russia

Migration of legacy banking software, consisting of hundreds of WAR modules (old-style "microservices"), from Java 6 and proprietary IBM WID to open-source Maven, Spring frameworks, WildFly server, and Java 8.- Developed a migration plan.- Conducted an onsite business trip for direct interaction with the customer, ensuring a smooth transition.- Reduced memory usage by 60%.- Halved the average startup time.- Enhanced average module performance by approximately 100%.

Novosibirsk, Russia

Virtual PBX (internal telephone network) portal as an intermediate application between a billing system and low-level VoIP server hardware.- Conducted regular meetings with different branches to explore and implement new features, often requiring both software development and hardware configuration updates.- Developed strategies to identify and optimize performance bottlenecks.- Oversaw the rollout of application updates, ensuring minimal downtime and seamless integration.- Improved the performance of some workflow parts by up to 5 times.- Maintained high levels of system stability and performance.

Novosibirsk, Russia

Full-stack support of a legacy system for financial reports generation/calculation. The system is based on Java EE, EJB, and JSF.- Researched and updated legacy code.- Implemented new features for both front-end and back-end parts.- Updated the Java version and modernized the source code.- Configured and deployed GlassFish.

Novosibirsk, Russia

Developed a customer "news" mobile application for different Android platforms (phones and tablets).- Implemented features required by design (animations).- Developed a client for the REST API.- Improved performance with a download cache.- Developed a database structure to store local data.