1,788,870open jobs
103,847companies
267,983added this week
Browse all
Location
In office (Sofia)
Seniority
Junior

Confirmed on the employer's own hiring board on Oct 16, 2026. First seen by Alion on Aug 4, 2026.

Overview
Company
Impact
Profile match
Mainstream is a cloud operations company that combines cloud expertise with AI-powered automation to run private and public cloud environments for clients. It hires cloud engineers at levels one to three, operations center engineers, product engineers and sales managers for new client acquisition. The company is headquartered in Belgrade, Serbia.

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

Requirements

  • 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

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
1,788,870 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

DevOps
Similar stack
Same company
Sofia
In office • Full-Time • Toyama
DevOps
GitHub
Apply
System Engineer 8 hours ago
In office • Full-Time • Savar
Python
DevOps
Zabbix
VLAN
BGP
Apply
≈ $55k – $109k per year (Estimated) • In office • Full-Time • Berlin
DevOps
GitHub
Management
ITSM
Apply
≈ $133k – $258k per year (Estimated) • In office • Full-Time • Bachelor's Degree • Dallas
DevOps
HPC
Apply
devops工程师 4 years ago
In office • Full-Time • Suzhou
SQL
PowerShell
Databases
RabbitMQ
DevOps
Kubernetes
Apply
≈ $13k – $33k per year (Estimated) • In office • 5+ years exp • Bachelor's Degree • Gurgaon
Python
SQL
DevOps
Incident Management
SLI/SLO/SLA
Linux
Unix
Apply
$54k – $87k per year • In office • Wesseling
DevOps
Linux
Management
Microsoft Office
Apply
≈ $100k – $259k per year (Estimated) • In office • Confidential • Full-Time • 10+ years exp • Tel Aviv
Python
Go
Databases
MySQL
Cassandra
ScyllaDB
AI/ML
LLM
DevOps
Terraform
GCP
FluxCD
Prometheus
CI/CD
GitOps
Kubernetes
Self-Healing
Cortex
Linux
Apply
≈ $13k – $30k per year (Estimated) • In office • Lobnya
DevOps
Docker
Linux
Windows
TCP/IP
DNS
DHCP
VPN
VLAN
Wi-Fi
Cybersecurity
Active Directory
Management
Yandex Tracker
Service Desk
Apply
≈ $20k – $45k per year (Estimated) • In office • Full-Time • 2+ years exp • Moscow
Python
PowerShell
Bash
DevOps
Linux
Windows
Astra Linux
TCP/IP
VPN
VLAN
Cybersecurity
SIEM
DLP
КриптоПро
ViPNet
Kaspersky
Apply
≈ $27k – $76k per year (Estimated) • In office • 7+ years exp • Sofia
Python
Bash
Databases
MySQL
PostgreSQL
Redis
Memcached
MariaDB
DevOps
PHP-FPM
Terraform
Ansible
Zabbix
VMWare
Prometheus
HAProxy
CI/CD
Jenkins
Docker
Kubernetes
Ubuntu
Nginx
Grafana
Configuration Management
Nagios
Incident Management
Linux
TCP/IP
DNS
Apache HTTP Server
Apply
In office • 3+ years exp • Sofia
Python
Bash
Databases
MySQL
PostgreSQL
Redis
Memcached
MariaDB
DevOps
PHP-FPM
Terraform
Ansible
Zabbix
VMWare
Prometheus
HAProxy
CI/CD
Jenkins
Docker
Kubernetes
Ubuntu
Nginx
Grafana
Configuration Management
Nagios
Incident Management
Linux
TCP/IP
DNS
Apache HTTP Server
Apply
In office • Belgrade
Apply
≈ $34k – $102k per year (Estimated) • In office • Belgrade
AI/ML
AI Agents
RAG
Management
Linear
Asana
Jira
ServiceNow
Apply
≈ $22k – $65k per year (Estimated) • Hybrid • Belgrade
PowerShell
Databases
MySQL
MS SQL
MariaDB
DevOps
VMWare
Nginx
KVM
Hyper-V
Linux
Windows
TCP/IP
DNS
Apache HTTP Server
Apply
Platform Architect 1 day ago
≈ $63k – $114k per year (Estimated) • Hybrid • 8+ years exp • Warsaw • Limassol • Sofia
Python
AI/ML
LangChain
Claude
Claude Code
LlamaIndex
Model Context Protocol
Vertex AI
Function Calling
AI Agents
AWS Bedrock
LLM
RAG
OpenAI
Anthropic
Amazon SageMaker
LLM Guardrails
EU AI Act
NIST AI RMF
Tool Use
DevOps
GCP
AWS
AWS Lambda
Amazon S3
IAM
Amazon CloudWatch
Cybersecurity
ISO 27001
Least Privilege
DLP
OWASP
Management
Slack
Confluence
Jira
Google Workspace
n8n
Apply
≈ $27k – $74k per year (Estimated) • Hybrid • 3+ years exp • Sofia
Bash
DevOps
Ansible
New Relic
Prometheus
GitLab CI
Azure
CI/CD
Jenkins
Git
AWS
Docker
Kubernetes
Grafana
Configuration Management
GitHub
Linux
Windows
Apply
≈ $19k – $51k per year (Estimated) • In office • Internship • Bachelor's Degree • Sofia
Analytics
Microsoft Excel
Management
Microsoft Office
Apply
Remote (EU, UTC+2 hours) • Contractor • Sofia • Bucharest • Kraków • Brno • Budapest
DevOps
Azure DevOps
Azure
Marketing
Zendesk
LinkedIn
Instagram
Apply
Senior Java Developer 11 hours ago
≈ $45k – $84k per year (Estimated) • Remote (Bulgaria) • Full-Time • Sofia
JavaScript
Java
Java
Hibernate
Databases
MySQL
PostgreSQL
AI/ML
Copilot
Cursor
Claude
Claude Code
Model Context Protocol
Function Calling
AI Agents
AWS Bedrock
RAG
LLM Guardrails
Tool Use
Mobile
JUnit
DevOps
Terraform
Ansible
AWS
GitHub
Linux
Cybersecurity
PCI DSS
Cryptography
OpenSSL
Management
Confluence
Jira
Apply
See all jobs
This is one of many
1,788,870 more open roles from verified company boards, updated every day.