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