Alexander Rahulin Email & Phone Number

South Moravian Region, Czechia

Brno, South Moravia, Czechia

Joined to contribute to the development of internal tools and supply-related systems.Contracted via Sombra.

Lviv, Ukraine

- Designed and developed backend and full-stack solutions, focusing on secure software platforms, static/dynamic code analysis, and scalable microservices architecture.- Built an authentication and authorization subsystem from the ground up, utilizing Keycloak, gRPC, and REST APIs for high-performance and secure access to platform resources.- Conducted systems design and architectural planning, including infrastructure integrations and third-party API interactions.- Researched and implemented code examples for an educational platform, showcasing secure software practices and real-world application vulnerabilities.- Developed automated deployment/delivery pipelines and custom code generation tools to enhance efficiency and reduce manual intervention.- Led technical interviews and onboarding for new developers, sharing knowledge, writing new and enhancing existing documentation.Contracted via Sigma Software Group.

Lviv, Ukraine

- Developed backend solutions for network security assessment, leveraging real-time analytics with Spark Streaming and integrating threat intelligence feeds.- Optimized algorithms and JVM/Spark configurations for near real-time processing, handling high-load services on GCP.- Applied machine learning techniques to security challenges, producing models for network traffic analysis and threat detection (Keras, Scikit-Learn).- Built automated DevOps command-line tools using Golang and Python; migrated data to Neo4J for graph data analysis.- Developed custom dashboards and backend components for Splunk, integrating ML solutions; created applications for IBM QRadar.- Monitored service health, implementing Prometheus and Grafana for effective oversight.- Contributed to knowledge sharing through documentation, presentations, and mentoring team members across different time zones.Contracted via UnderDefense Cybersecurity.