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 Senior 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.
Design, implement and optimize cloud infrastructure and platform architecture
Lead complex infrastructure projects and technical improvements
Provide L3 support by troubleshooting complex infrastructure incidents and performing root cause analysis
Drive automation using Infrastructure as Code and configuration management tools
Collaborate with engineering teams to improve reliability, scalability and operational efficiency
Define and promote DevOps, incident management and security best practices
Create and maintain technical architecture documentation, operational procedures and runbooks
Lead knowledge transfer sessions, mentor engineers and support technical growth across the team
Continuously drive cloud, automation and digital transformation initiatives
7+ years of experience in Cloud, Linux System Administration, Infrastructure or DevOps roles
Experience designing, implementing and supporting enterprise production environments
Experience leading technical initiatives and mentoring engineers
Strong analytical thinking and structured troubleshooting approach
Strong communication skills and a collaborative mindset
Fluent English
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 AI, 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

Mainstream is a forward-thinking technology company with its focus 100% on the cloud. We embraced the cloud back in 2005 and never looked back. Since then, we have grown in multiple directions, in many ways – building the largest team of cloud experts in the SEE region and a data centre ecosystem that spans six countries in Europe. Most importantly, we have built long-lasting relationships with 200+ customers region-wide.
Combined with our multi-cloud knowledge, our state-of-the-art HA infrastructure provides our enterprise clients with a turnkey solution for their digital projects. Whether that be Cloud Hosting, Infrastructure as a Service (IaaS), Application Development and Migration, Backup, and Disaster Recovery, Mainstream can help you eliminate complexity to make the most from your cloud investment.
We support all major public cloud platforms (Microsoft Azure, Amazon Web Services, Google Cloud) and deliver the highest level of performance with our Mainstream Enterprise and Managed Hosting platforms. What truly makes us different, though, is our value-first approach to cloud computing. We design and implement client-specific solutions to ensure you get maximum value from the cloud. Rather than purely implement, we strategize. Our experts dig deep into our clients' IT environments, identifying the weak spots, as well as opportunities, and designing custom solutions to address them.
From IT infrastructure optimization to cloud management, our enterprise infrastructure, cloud expertise and solutions ensure growth – now and in the future.