• Administration and improvement of a multi-distribution Linux physical and virtual server infrastructure.• Management of OSS based high availability Database and Application clusters (load balancers, replication and autofailover, backup repositories, backend APIs and MQTT brokers).• Network configuration, firewalls, proxies, VPNs, SSL certificates.• IaaS, IaC, scripting and automation.• Monitoring of infrastructure and logs, generation of statistics and dashboards with modern observability and alerting tools. • Coordination with development teams for deployments in DEV/STG/PRD environments.

• Maintenance and administration of Linux servers (RHEL) and PostgreSQL databases.• Shell scripting, automation and migrating development environments to Docker.• Deployment of applications as microservices.• Configuration of firewalls, DNS services, HTTPS, Proxy, VPN and SSL certificate management.• Monitoring of applications, resources, alerts and backup management.