Senior SysOps Engineer

About the Position

We're looking for a Senior SysOps Engineer to join our friendly and professional team.

The platform is a high-traffic web service handling tens of millions of requests per day, with a data pipeline processing 50M+ user events daily that feeds both customer-facing analytics and billing. It runs on self-managed infrastructure across two datacenters, with a mix of long-lived legacy components and an active modernization program.

Engagement: full-time (ideally) or part-time (20+ hours/week).

Location: Ukraine/EU, remote.

Responsibilities

• Maintain, manage, and improve the existing infrastructure and platform.
• Troubleshoot and resolve issues with critical platform components (ElasticSearch, Redis, FreeBSD, database replication, etc.).
• Maintain and update incident runbooks for the on-call teams.
• Automate system tasks and reduce manual repetitive work.
• Document and optimize deployment processes.
• Work on high-availability solutions for branded domains, database failover, and scaling improvements.

Requirements

• 5+ years of experience as a SysOps Engineer / Infrastructure Engineer (or similar role).
• Strong expertise with OS: FreeBSD (preferred), Linux (Debian, Ubuntu), Jail, Docker, and ZFS optimization.
• Database experience: MariaDB/MySQL with master-master, master-slave replication, MyISAM, InnoDB, GTID.
• Experience with Redis & Sentinel: setup, replication, and failover strategies.
• Experience with Web-servers: Caddy, Lighttpd, Nginx.
• Knowledge of ElasticSearch high-load clusters (replication, scaling, performance tuning).
• Experience with Cloudflare (DNS management, caching, security configurations).
• Experience with Supervisord, Beanstalkd, RabbitMQ.
• Networking & security expertise: Strong understanding of network protocols, packet filtering (iptables, ipfw, pf).
• Proficiency in scripting & automation: Bash, Python, PHP (or similar).
• Experience with PowerDNS and DNS management strategies.
• English - B2 and higher (for effective communication with stakeholders).

Nice to Have

• Experience with high-load multi-source database replication, Orchestrator, and ProxySQL.
• Knowledge of high-load infrastructure solutions and best practices.

We Offer

• Official B2B contract with a Canadian Company;
• Compensation for medical insurance (for our employees based in Ukraine);
• Flexible working hours (start at 8.00-11.00 o'clock);
• Weekends according to the Ukrainian/Local calendar;
• Engaging projects with opportunities for career growth;
• Certifications, Udemy courses, and other learning resources;
• Corporate events, team-building activities;
• Gifts and recognition from the company;
• A friendly, open, and supportive team culture without excessive bureaucracy.

About the Company

[Company description if present]