Igor Kazak

SCD Company

Yerevan

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Experience

Responsibilities

Upgraded the backend of the application from outdated versions of Spring Framework, Java, PostgreSQL, MongoDB, Elasticsearch, and Tomcat
Developed a web application optimized for visualizing large-scale graphs using PixiJS, HTML5, and WebGL
Documented infrastructure and wrote internal instructions and guides in Confluence
Deployed and developed regularly scheduled Google Cloud Functions; set up reporting and organized data storage in BigQuery
Maintained a stable production environment
Set up CI/CD pipelines in GitLab for building images, running tests
Configured infrastructure monitoring with Grafana and Prometheus; collected logs using Promtail and Loki
Assessed MVP feasibility based on requirements, selected appropriate technologies with justification, and designed the planned application architecture
Experience fine-tuning neural network models

Achievements

Implemented semantic search in Elasticsearch using vectorized job descriptions, which improved recommendation quality for end users
Simplified the project's architecture and documented its core logic during a major refactoring. This reduced the onboarding time for new developers and accelerated feature development
Implemented automatic tag suggestion for administrators using fuzzy matching on job titles and descriptions, reducing manual effort and analysis time
Automated the generation of dependency reports across all modules (using GitLab CI/CD, Dependency Check Maven Plugin, Npm Audit Export), which simplified product maintenance and accelerated the fixing of vulnerabilities caused by third-party libraries
Developed a Dagster pipeline that analyzed user clicks on different ads and generated regular reports, helping to optimize advertising costs

Implemented a Python plugin for QGIS that corrects elevation data of rivers and lakes to ensure hydrological consistency

I acquired fundamental knowledge in both Computer Science and Mathematics