DevOps Engineer / System Administrator

Remote | Flexible schedule
We are looking for a hands-on DevOps Engineer who can take ownership of infrastructure reliability, monitoring, proxy infrastructure, and Kafka.
The key focus of this role is to build and maintain a reliable message delivery architecture so that leads and data are not lost even when the CRM is slow, temporarily unavailable, or does not respond.

Responsibilities

Set up, configure, maintain, and troubleshoot Apache Kafka.
Design a reliable data delivery flow between internal systems and CRM using Kafka.
Ensure leads/messages are not lost when CRM services are unavailable or respond with errors.
Monitor message processing, delivery failures, delays, and infrastructure health.
Set up alerts for critical infrastructure and delivery issues.
Measure server response times and identify performance degradation.
Configure and maintain monitoring for servers and services.
Manage and rotate proxy servers.
Analyze traffic patterns and identify suspicious/bot traffic.
Create and maintain filtering rules against bots and unwanted traffic.
Configure and maintain Linux servers and web infrastructure.
Work with Nginx/reverse proxy, DNS, SSL/TLS, networking, and server configuration.
Set up and maintain weekly backups and make sure recovery is possible.
Investigate incidents and infrastructure issues independently.
Improve the infrastructure so that routine monitoring and incident detection do not depend on constant owner involvement.

Requirements

Strong hands-on experience with Linux administration.
Practical production experience with Apache Kafka: setup, configuration, monitoring, troubleshooting, and message delivery.
Understanding of message queues, retries, failure handling, and reliable data delivery.
Experience designing systems that continue processing data when an external service is temporarily unavailable.
Strong knowledge of Nginx / reverse proxy.
Experience with networking, DNS, SSL/TLS, firewall rules, and proxy infrastructure.
Experience with infrastructure monitoring and alerting.
Ability to analyze logs and investigate production incidents.
Bash or another scripting language for infrastructure automation.
Experience with backups and recovery.
Ability to work independently and take ownership of infrastructure reliability.
Fluent Russian is required.

Nice to have

Experience with high-load or traffic-heavy projects.
Experience with anti-bot / traffic filtering solutions.
Experience with CRM integrations and lead-processing infrastructure.
Experience with PHP/MySQL-based infrastructure.

What we offer

Fully remote work.
Flexible schedule.
Direct communication with the project owner.
High level of autonomy and ownership.
Opportunity to design and improve infrastructure rather than only maintain existing configurations.
Compensation is discussed individually based on experience.