Head of IT, System Administrator, DevOps Specialist
2011 - PRESENTSpotware Systems, Ltd.- Created a database back-up and restore procedure.
- Developed my own content delivery network (CDN) based on GeoIP DNS.
- Designed a complex monitoring system based on Zenoss Core.
- Created a deployment procedure based on Jenkins and Ansible.
- Developed VMware-based virtual machine provisioning using Ansible.
- Maintained and supported the multi-site network infrastructure based on Cisco and Palo-Alto equipment.
- Maintenance of the corporate webservers running on nginx/apache/php.
Technologies: Amazon Web Services (AWS), AWS, Ansible, Perl, Bash, Jenkins, VMware, PostgreSQL, Kubernetes, Monitoring, Docker, Amazon Route 53, Amazon S3 (AWS S3), CloudflareSenior System Administrator, NOC Manager
2002 - 2011PrimeTel PLC- Designed and supported a metropolitan wide-area network based on Cisco equipment.
- Troubleshooted complex network problems.
- Created a monitoring system of more than 30,000 items.
- Created, trained, and led a 24-hour network operation center team.
- Developed the automatic provisioning of network equipment using Perl.
Technologies: Bash, Perl, Zenoss, Linux, Juniper, Cisco
Alexander Avanesov
System Administration Developer in Limassol, Cyprus
Member since October 11, 2019
Alexander has over 20 years of IT experience. He designs and delivers powerful CI/CD architecture, complex monitoring systems, and Cloud and in-house solutions. His expertise lies in DevOps, system administration, networking, automation, troubleshooting, and monitoring.
Alexander is now available for hire
Portfolio
- Spotware Systems, Ltd.Amazon Web Services (AWS), AWS, Ansible, Perl, Bash, Jenkins, VMware...
- PrimeTel PLCBash, Perl, Zenoss, Linux, Juniper, Cisco
Availability
Part-time
Preferred Environment
Amazon Web Services (AWS), AWS, Linux, Continuous Delivery (CD), Continuous Integration (CI), Jenkins, Ansible, DevOps, PostgreSQL, Kubernetes, CI/CD Pipelines, Monitoring, Docker, Amazon Route 53, Cloudflare, CORS, HTML, Amazon EC2 (Amazon Elastic Compute Cloud)
The most amazing...
...out-of-the-box crypto exchange hosting solution I've designed included hardware provisioning, deployment, and management.
Employment
Experience
- Geo-based Content Delivery Network
Due to the inability to use public CDNs, I developed and built my own CDN based on Nginx and geo-location DNS. The CDN consisted of several locations; each of which had multiple redundant servers.
- Enterprise-level Monitoring System
This system was based on Zenoss, which was extended by several additional modules. The significant advantage of this monitoring model is that it does not require services definition. It discovers and starts monitoring of the services itself according to the abstract model defined. I wrote several additional modules to monitor our Cloud solutions.
- VMware Provisioning and Scaling
I developed the full automation of the provisioning of virtual machines in a VMware cluster using Ansible. Integration with real-time monitoring was used for the live scaling of VM resources.
- Telegram Integration
In our company, we used Telegram messenger. Telegram notifications were implemented for various reasons, such as the monitoring of alerts and business cases.
- Route53-based DNS solution
Created an Amazon Route53-based solution to point clients to the nearest healthy and less loaded service. The solution uses Amazon health checks and complex geographic-based resolution with multiple failovers.
- AWS Remote Nodes
Connected AWS EC2 nodes to the corporate network using site-to-site VPN and IPSec tunnels to the customer gateway. To provide reliability, dynamic routing was implemented. The nodes were successfully used as remote build agents connected to corporate CI/CD infrastructure.
- Remote Work Infrastructure
Switched the office to remote work using several datacenters, cloud infrastructure, and VPN access to the workplaces. The VPN was built using Palo-Alto solutions and successfully handled hundreds of remote employees with zero transition time switching from the office to remote work.
Skills
Tools
Tcpdump, NGINX, Ansible, Jenkins, Git, Zenoss, Subversion (SVN), Graylog, Vultr, VPN, Amazon EBS, Amazon Virtual Private Cloud (VPC), RabbitMQ, VMware, YouTrack, Nagios, OpenVPN, Vim Text Editor, MailchimpPlatforms
Linux, Amazon EC2 (Amazon Elastic Compute Cloud), Windows, Windows Server, Linode, DigitalOcean, Linux CentOS 7, Mandrill, Ubuntu, Amazon Web Services (AWS), Kubernetes, DockerOther
Networks, Troubleshooting, System Administration, SSL Certificates, DNS Servers, DNS Configuration, Domain Name System (DNS), Email, VMware ESXi, DNS, Firewalls, Amazon Route 53, TCP, Monitoring, BGP, Open Shortest Path First (OSPF), IPsec, Grep, Palo Alto Networks, IT Administration, IT Networking, DMARC, Spam Filtering, SparkPost, Gmail, DomainKeys Identified Mail (DKIM), Cloudflare, AWS, Juniper, Cisco, SANs, Active Directory Federation, WebSockets, Group Policy, CI/CD Pipelines, CORS, IP Routing, NetworkingLanguages
Bash Script, Sed, AWK, Bash, Perl, Python, SQL, HTMLParadigms
DevOps, Continuous Delivery (CD), Continuous Integration (CI)Storage
InfluxDB, MySQL, PostgreSQL, Amazon S3 (AWS S3), Alibaba Cloud, MongoDB, Azure Active Directory, Redis Cache, Redis, JSONIndustry Expertise
Security, IT Security
Education
- Master's Degree in Computer Engineering1988 - 1993Ryazan Radiotechnical University - Ryazan, Russia
