# Senior Cloud Engineer (L3) – Private & Public Cloud Open Talent Pool at Mainstream > Hybrid · Serbia · Senior · DevOps / SRE / Infra · open. Source: https://alderhq.app/jobs/recruitee%3Amainstream%3A2679505 (read 2026-11-08). ## Facts (observed) - Company: [Mainstream](https://alderhq.app/companies/mainstream) - Location text: Beograd, Beograd, Serbia - Where it can be done from (inferred): Hybrid · Serbia (evidence: "Location: Beograd, Beograd, Serbia") - Posted: 2026-07-16 (115 days ago) - First seen by alder: 2026-11-07 · last verified: 2026-11-08 - Reposted: 0 times · edited: 0 times - Apply on the employer's site: https://careers.mainstream.eu/o/senior-cloud-engineer-l3-private-public-cloud-open-talent-pool - Skills listed (inferred): Python, PHP, PostgreSQL, MySQL, MongoDB, Redis, AWS, Azure, Kubernetes, Docker, Terraform ## Pay and sponsorship - Posted pay: not posted ## Description (the employer's text) ### Join Our AI-Powered Cloud Engineering Talent Pool 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 launch their careers, learn from experienced engineers, and grow in an AI-powered cloud environment while working with modern cloud technologies and enterprise infrastructure. Whether you're more interested in Private Cloud, Public Cloud (AWS or Microsoft Azure), or a combination of both, we'd love to hear from you. 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 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 ### Requirements 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 Public Cloud Platforms: AWS, Microsoft Azure 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 our Talent Pool? Even if we don't have the perfect opportunity open today, joining our Cloud Engineering Talent Pool means you'll be among the first professionals we contact when a matching Senior position becomes available. If you're looking for your next challenge in Private Cloud, AWS, Azure or hybrid cloud environments, we'd love to get to know you. --- Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/recruitee%3Amainstream%3A2679505 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.