DevOps Engineer

REQUIREMENTS:

• 5+ years of hands-on experience in DevOps/SRE, including operating bare-metal infrastructure and high-throughput production systems
• Deep understanding of Linux internals, including CPU, memory management, file descriptors, system limits, IRQ affinity, and NUMA
• Strong knowledge of TCP/IP and the Linux networking stack, including the connection lifecycle, listen and accept queues, SYN backlog, TIME_WAIT, conntrack, ephemeral ports, retransmissions, and socket limits
• Experience diagnosing network saturation, packet loss, queue overflows, connection exhaustion, SYN backlog overflows, and abnormal traffic patterns
• Proficiency with production diagnostic tools such as ss, tcpdump, perf, strace, and /proc
• Experience operating and tuning load balancers in high-throughput production environments
• Strong knowledge of Ansible, GitLab CI, Bash, and Git.
• Experience with Prometheus or VictoriaMetrics, Grafana, and PromQL
• Experience participating in on-call rotations and resolving critical production incidents
• Ability to make technical decisions independently, drive complex initiatives, and share expertise with other engineers
• Ability to read and understand technical documentation in English
• Deep Expertise in at Least One Area strong hands-on expertise in at least one of the following is required:
• Go in production: pprof, goroutine dumps, execution traces, and runtime metrics; diagnosing excessive allocations, GC pressure, goroutine leaks, lock contention, blocked I/O, and incorrect network timeouts; understanding GOGC, GOMEMLIMIT, GOMAXPROCS, connection pooling, and graceful shutdown. Ability to read Go code and provide developers with evidence-based hypotheses about performance and reliability issues.
• Load balancing at scale: experience with systems processing more than 1 million requests per second.
• Safe deployments across large server fleets: rolling and canary deployments, health checks, versioning, and rollback strategies.
• Observability and performance: capacity planning, load testing, and systematic bottleneck analysis.

WOULD BE A PLUS:

• Experience with latency-sensitive or real-time data processing systems
• Experience operating ClickHouse, Kafka, Redis, or Aerospike
• Experience with AdTech/OpenRTB
• Experience with MAAS/PXE, IPMI/BMC, or BGP
• Experience with Proxmox, FreeIPA, or nftables
• Practical experience using AI assistants in engineering workflows
• Spoken English at B1 level or higher