Sergey S., Senior DevOps/SysOps Engineer
B2 (Upper-Intermediate) English
Senior (5-10 years)
Ukraine
UTC+02:00
Summary
- 13 years of experience in IT as DevOps/SysOps
- Administering, monitoring, maintaining complex deployments, securing large scale infrastructures, building CI/CD pipelines, supporting networks, servers, dealing with high load workloads
- Setting up and managing Kubernetes clusters
- Upper-intermediate English
- Available ASAP
Main Skills
DevOps 13 yr.
Programming Languages
Databases & Management Systems / ORM
Cloud Platforms, Services & Computing
Amazon Web Services
Azure Cloud Services
Message/Queue/Task Brokers
QA, Test Automation, Security
Web/App Servers, Middleware
Collaboration, Task & Issue Tracking
Scripting and Command Line Interfaces
Version Control
Deployment, CI/CD & Administration
Operating Systems
Mail / Network Protocols / Data transfer
Virtualization, Containers and Orchestration
Other Technical Skills
Projects
Senior DevOps, TeeVid – video conferencing platform
2016 - now
Responsibilities:
- CI/CD: Jenkins setup and maintenance
- Databases: MongoDB
- Containerization: docker, docker-compose (organizing compex deployments as package of services with shell scripting)
- Setting up and managing Kubernetes clusters
- Monitoring: graylog, ackuaria, prometheus, grafana,homer
- Other: integrating nginx with lua for jwt token verification inside nginx config(with lua code and modules), sonarcube, implementing separate code checks to verify against CVE, Elasticsearch, SIP servers (drachtio, kamailio)
Senior DevOps, comcube – ERP system
2016 - now
Responsibilities:
- IDP systems setup: shibboleth, CA (integrating with AD and LDAP, implementing non password auth in browser inside AD), Kerberos.
- Mail: integrating all the modern checks (e.q. DKIM, SPF), integrating PostgreSQL with AD
- CI/CD: Jenkins setup and maintenance
- Virtualization: Xen (administration, patching the kernel to fix CVE issue (mealtdown), migrations between versions), VMware
- Containerization: docker, docker-compose, docker- swarm (usual administration, most of the images self- built)
- Setting up NewRelic
- Logging: graylog
- Databases: PostgreSQL (including optimization complex queries), MongoDB, MySQL
- Other: Apache syncope (sync users between AD and PostgreSQL with the help of groovyscript), Maven (building), Tomcat, jetty, Atlassian services(Jira, Bitbucket, Crowd, Confluence), Artifactory (administrating, migrating between versions), tuning JVM for tomcat jetty and applications, Sonarqube,
- ActiveMQ, shell, python, perl, groovyscript, elasticsearch
Senior DevOps, Sequencing – genome processing startup
2016 - now
Responsibilities:
- Administering network infrastructure of 20+ Ubuntu/CentOS nodes running various software (mostly Java). Setting monitoring, backup processes. LVM, soft RAID configuration. Setting up and management ofglusterfs installations. Used technologies: Linux, FreeBSD, Perl, Bash scripting, LVM, soft RAID, glusterfs, networking
- Setting up CI/CD pipelines using GitLab
System administrator
2014 - 2016
Description: Administering server farm of hosting provider
Technologies: Linux, FreeBSD, Perl, Bash scripting, LAMP stack, networking
System administrator, developer
2009 - 2014
Description: Network administration, network engineering, security, integrating new technologies, programming, monitoring, surveillance integration and installation, participating in datacentre planning, construction, development
Technologies: Linux, FreeBSD, Perl, Bash scripting, PHP, ehll, Python, MySQL, networking, TCP/IP, Cisco IOS.
System administrator, developer, Freelance
Period: 2008 - 2009
Description: Various infrastructure support, monitoring, reporting, backup tasks
Technologies: Linux, FreeBSD, bash scripting, Perl, iptables/ipfw, Lua, PHP
System administrator, developer
Period: 2007 - 2008
Description: Developing special firmware from OpenWRT source
Technologies: OpenWRT, Linux, bash scripting, Perl
Education
General education
1996-2007