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

Requirements

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