Junior Mainstream Cloud Engineer
- Level
- Junior
- Work type
- Hybrid · Sofia
Not stated in the posting: salary, visa.
Open. First seen 3 October 2026.
About the role
Join Our AI-Powered Cloud Engineering Team
At Mainstream, we're building the next generation of cloud operations by combining deep infrastructure expertise with AI-powered automation and intelligent operations. We're looking for motivated Junior Cloud Engineers who are eager to launch their careers, learn from experienced engineers, and grow in an AI-powered infrastructure environment while working with modern enterprise technologies.
As part of our Cloud Engineering team, you will support enterprise infrastructure, monitor mission-critical systems, resolve operational incidents, and develop your technical skills while helping our customers maintain secure, scalable and reliable platforms.
What you'll do
- Monitor infrastructure, system health, performance, security and availability
- Provide L1 operational support by responding to alerts and resolving standard infrastructure incidents
- Escalate complex issues to higher support levels when required
- Perform routine operational tasks, health checks and maintenance activities
- Assist with deployments, patching and basic system administration
- Follow operational procedures, incident management and security best practices
- Maintain operational documentation and runbooks
- Continuously learn and contribute to automation and digital transformation initiatives
- 0–2 years of experience in IT Operations, System Administration, Infrastructure, or a relevant technical education
- Basic understanding of Linux, networking and virtualization concepts
- Analytical thinking and willingness to learn
- Good communication skills and a collaborative mindset
- Endless curiosity
- Fluent English, Fluent Bulgarian
Why join Mainstream?
- Work alongside experienced engineers in enterprise infrastructure and virtualization
- Gain hands-on experience with mission-critical environments and modern technologies
- Learn 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
What this role asks for
In most of mainstream's ads
Linux
Named in most of its open postings, whatever the role.
Compared with mainstream's other open jobs.
The team: Operations HIRES STEADILY
This role is one of 6 open in Operations. 1 was posted in the last 30 days and the oldest in July: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Linux (6 of 6), Ansible (4 of 6), Bash (4 of 6), CI/CD (4 of 6), Docker (4 of 6), Grafana (4 of 6), Kubernetes (4 of 6)
OTHER ROLES ON THIS TEAM
- Medior Mainstream Cloud Engineer posted Sep 29
- Senior Mainstream Cloud Engineer posted Aug 5
- Senior Cloud Engineer (L3) – Private & Public Cloud Open Talent Pool posted Jul 16
- Medior Cloud Engineer (L2) –Private & Public Cloud Open Talent Pool posted Jul 16
- Junior Cloud Engineer (L1) - Private & Public Cloud Open Talent Pool posted Jul 16
From the team and dates on mainstream's own job board.
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