Designing, administering and developing IT infrastructure including workstations, Linux servers, networks, containers, reverse proxy, domains and development and deployment environments.

• Administering Linux systems and configuring services, users, permissions, processes and work environments
• Configuring LAN and Wi-Fi networks, routers, DNS and access to local and internet services
• Building, upgrading, servicing and troubleshooting PCs and peripherals
• Building and maintaining multi-container environments using Docker and Docker Compose
• Konfiguracja Nginx jako reverse proxy dla wielu domen, aplikacji i portów
• Configuring TLS certificates, Certbot and automatic certificate renewal
• Projektowanie procesów CI/CD w Jenkins
• Administracja repozytoriami Git
• Podstawowe zabezpieczanie usług, filtrowanie niepożądanych żądań i analiza logów
• Troubleshooting hardware, network, system, container and application issues

Designing, developing, deploying and maintaining web services and shared application and server infrastructure.

• Containerizing applications and automating builds and deployments using Docker, Docker Compose and Jenkins
• Configuring Nginx Reverse Proxy, handling multiple domains, HTTPS redirects and TLS certificates
• Deploying and maintaining services in Oracle Cloud Infrastructure
• Monitoring services, analyzing logs, troubleshooting issues and deploying fixes

Designing and developing a custom multi-service platform, professional portfolio, online CV and shared tools for multiple applications and domains.

• Automatyzacja wdrożeń, konfiguracja kontenerów, reverse proxy i usług
• Managing Git repositories, troubleshooting environments and updating dependencies

Long-term development, maintenance and modernization of a large-scale ERP system supporting finance and accounting, HR and payroll, fixed assets and administrative processes.

• Automatyzacja wdrażania i konfiguracji kolejnych wersji systemu ERP na serwerach aplikacyjnych JBoss i WildFly
• Configuring data sources, connection pools and integrations with Oracle Database and Microsoft SQL Server in JBoss and WildFly environments
• Creating tools for backups, data restoration and administrative and deployment processes
• Analiza problemów, diagnozowanie błędów aplikacyjnych i bazodanowych oraz przygotowywanie poprawek