Freelancer profile translated to English.
Back to original languageAbout Semen
Senior Backend und Cloud-Entwickler mit knapp 7 Jahren Erfahrung in Java, AWS und DevOps Projekten im Enterprise Umfeld. Fokus auf Cloud Migrationen, Modernisierung bestehender Systeme, API-Entwicklung sowie Aufbau stabiler CI/CD und Monitoring Lösungen. Erfahrung in der Migration von On-Premise-Systemen nach AWS, Performance Optimierung, Observability und Automatisierung von Deployments mit Terraform, Ansible und Kubernetes.
German
Native or bilingual
English
Native or bilingual
Russian
Conversational
Can work on-site
Berlin (up to 50km)
Experience
- SDA SEBackend DeveloperHEALTH AND WELLNESSJune 2025 - Today (1 year and 2 months)Hamburg, Germany• • POC for migrating TFS/TFE to Gitlab as the sole code and deployment system• • Significant reduction in license costs by replacing the proprietary Terraform Enterprise system with Gitlab• • API Development Lambda - Improvement of monitoring and setup of metrics, KPIs, and dashboards within the team
- Keycon AGSenior Backend DeveloperTRANSPORTATIONSeptember 2022 - May 2025 (2 years and 8 months)Jena, TH, Germany• • Migration from On-Premise to AWS - contributed to the entire architecture and developed solutions based on AWS• • Migration from COBOL to Java - supervised and trained COBOL developers in Java and AWS• • Continuous improvement of build pipelines and monitoring tools - previously uptime of 91+- % - now 99.95+ %• • Performance analysis and fixing of SQL memory, CPU, connections, and latency
- United Internet AGJava DeveloperINTERNET OF THINGS (IOT)April 2022 - September 2022 (5 months)Berlin, Germany• • Further development of IONOS Cloud• • Release process reduced from approx. 40 hours of work per week to 4-8 hours through a new automated process• • Kubernetes development with Helm Charts
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Education
- IT Specialist System IntegrationOSZ IMT2018Fachinformatiker Systemintegration
Certifications
- AWS Certified AI PractitionerAmazon Web Services (AWS)2025
- AWS Certified Developer - AssociateAmazon Web Services (AWS)2025