Medior Mainstream Cloud Engineer

Join Our AI-Powered Cloud Engineering Team At Mainstream, we're building the next generation of cloud operations by combining deep cloud expertise with AI-powered automation and intelligent operations. We're looking for motivated Medior Cloud Engineers who are eager to thrive in an AI-powered cloud environment while working with modern cloud technologies and enterprise infrastructure. As part of our Cloud Engineering team, you will support enterprise environments, monitor mission-critical systems, resolve operational incidents, and learn modern cloud technologies while helping our customers maintain secure, scalable and reliable cloud platforms. What you'll do Deploy, maintain and optimize cloud infrastructure Monitor system health, performance, security and availability Provide L2 support by troubleshooting and resolving infrastructure incidents Automate infrastructure using IaC and configuration management tools Work with Linux, virtualization, containers and cloud-native technologies Collaborate with engineering teams to improve reliability, scalability and operational efficiency Follow DevOps, incident management and security best practices Continuously learn and contribute to cloud, automation and digital transformation initiatives 3–5 years of experience in Cloud, Linux System Administration, Infrastructure or DevOps roles Experience supporting production environments and resolving infrastructure incidents Strong analytical thinking and structured troubleshooting approach Strong communication skills and a collaborative mindset Fluent English, Fluent Bulgarian Experience with some, not all, of the following technologies is expected: Operating Systems: Linux administration (RHEL, Ubuntu and similar), including network, system and application services Networking: TCP/IP, DNS, troubleshooting Infrastructure & Virtualization: VMware and/or Citrix XenServer, Infrastructure as Code (Terraform preferred), Configuration Management (Ansible) Automation & Scripting: Bash and/or Python scripting, CI/CD fundamentals, Jenkins (nice to have) Containers & Cloud Native: Docker, Kubernetes Databases & Web Technologies: Apache, Nginx, PHP-FPM, MySQL / MariaDB / Percona, PostgreSQL, MongoDB, Redis, Memcached High Availability & Monitoring: HAProxy, Keepalived, Nagios, Zabbix, Grafana, Prometheus What we value Technical leadership and ownership Knowledge sharing and mentoring Curiosity and continuous learning Customer-focused approach Passion for automation and modern cloud technologies Why join Mainstream? Work alongside experienced engineers in enterprise infrastructure and virtualization Gain hands-on experience with mission-critical environments and modern technologies Grow in an AI-powered engineering organization where automation is part of everyday work Access continuous learning, mentoring and professional development opportunities Be part of a collaborative team that values curiosity, ownership and innovation