Position: Senior SRE/DevOps
Category: DevOps
English level: upper
Years of experience: 7


Expert:
    • Linux (Ubuntu)
         Performance (IRQ balancing, sysctl, IO tuning)
         File systems (XFS with reflinks, AUFS|OverlayFS)
    • Nginx
         HTTP balancing (sticky cookies, traffic filtering)
         TCP balancing (SSL preread HTTPS balancing)
         Performance (kTLS, reuseport, PCRE JIT, AIO|DirectIO)
    • MySQL (select speed up, indexes tuning, optimizer switch)
    • Memcached (noblock|noreply|nodelay, socket reuse, eBPF cache)

Proficient:
    • Google Cloud and Amazon AWS EC2
    • KVM Virtualization (Proxmox)
    • PostgreSQL (huge pages, multi thread performance tuning)
    • MongoDB (eviction threads, compression optimization)
    • Tracing (strace, php-spy, sysdig, tcpdump)
    • PHP (Laravel, php-fpm, OPcache, JIT, Swoole)
    • Java (OpenJ9, performance analyze and tuning)
    • Net utils (curl, nmap, socat|netcat, nslookup|dig)
    • Docker (preparation of developers environment setup)

Intermediate:
Terraform, Ansible, ElasticSearch (OpenSearch), Solr, Redis, Node.js, GoCD, GitLab CI, Newrelic, Apache, Kubernetes, Atlassian Jira|Confluence

A long time ago in a galaxy far, far away…
Building packages from sources, DNS64/NAT64, IPv6, Puppet, Python, Nagios, Prometheus, Grafana, TICK stack, Wi-Fi WPA2 Enterprise (FreeRadius)
I give preference to projects where I can work on optimizing servers (performance) and solving unexpected problems