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  1. Freelancers

Oleksandr Berezhnyi

IT Infrastructure & DevOps | Cloud • Servers • Networks • IT Outsourcing
Offer Oleksandr work on your next project.

Ukraine Kyiv, Ukraine
21 hours 48 minutes back
Available for hire available for hire
10 proposals made
on the service 4 months 27 days
  • System Administrator
  • VPS/VDS
  • Unix/Linux/FreeBSD
  • Windows/Windows Server
  • Asterisk FreePBX
  • DevOps
  • Nginx/Apache
  • MySQL/MariaDB
  • NFS/iSCSI/TrueNAS
  • Juniper/Cisco
  • GPON/XGSPON
  • Zabbix/Prometheus/Grafana
  • cPanel/Plesk/ispmanager
Freelancer Oleksandr B. — Ukraine, Kyiv. Core skill — Software & Server Configuration, System & Network Administration

Rating

Successful projects
No data
Average rating
No data
Rating
361
Software & Server Configuration
48 place out of 222
System & Network Administration 1
72 place out of 587

Skills and abilities

Services

Administration

Portfolio


  • AsterNIC CDR Reports Setup for Call Monitoring

    System & Network Administration
    AsterNIC CDR Reports Setup for Call Monitoring — example of freelancer's portfolio work in category System & Network Administration
    Implemented and configured AsterNIC CDR Reports for collecting, storing, and analyzing VoIP CDR logs. Connected to SIP equipment, automated report generation, and visualized data to monitor call quality and traffic patterns. Improved transparency of telephony operations and streamlined decision-making for call optimization.

  • Asternic Call Center Stats Module Setup on Asterisk + FreePBX

    System & Network Administration
    Asternic Call Center Stats Module Setup on Asterisk + FreePBX — example of freelancer's portfolio work in category System & Network Administration
    Implemented and configured the Asternic Call Center Stats module on Asterisk + FreePBX to monitor call center operations, queues, and agents. Set up data collection and visualization of call statistics, analyzed agent workload and call handling efficiency. Automated reporting and notifications to quickly respond to high loads and improve customer service.

  • Grandstream IP Phones Setup

    System & Network Administration
    Grandstream IP Phones Setup — example of freelancer's portfolio work in category System & Network Administration
    Configured Grandstream IP phones for the corporate network. Set up SIP accounts, internal extensions, and voice menus. Configured call features, call forwarding, conferencing, and integrated the phones with the FreePBX system. Ensured stable operation and user-friendly experience for company employees.

  • FOP2 Supervisor Panel Setup on Asterisk + FreePBX

    System & Network Administration
    FOP2 Supervisor Panel Setup on Asterisk + FreePBX — example of freelancer's portfolio work in category System & Network Administration
    Implemented and configured the FOP2 Supervisor Panel module on Asterisk + FreePBX for real-time monitoring of call center agents and call management. Enabled display of line and agent status, queue management, call control, and integration with notifications. Automated monitoring processes and improved responsiveness to high call volumes.

  • Linux Server Administration and Monitoring

    Linux & Unix
    Linux Server Administration and Monitoring — example of freelancer's portfolio work in category Linux & Unix
    Configured and managed Linux servers (Debian, Ubuntu, RedHat), ensuring stable and secure operation. Implemented system monitoring using standard tools (top, htop, df -h, systemctl status) to track CPU, memory, disk usage, and service status. Enabled proactive issue detection and maintained high availability of server infrastructure

  • Proxmox Server Setup with Storage and VM Templates

    Software & Server Configuration
    Proxmox Server Setup with Storage and VM Templates — example of freelancer's portfolio work in category Software & Server Configuration
    Deployed and configured a Proxmox VE server for corporate virtualization. Set up storage for virtual machines and backups, prepared VM templates for rapid deployment, and configured automated backup and resource management. Ensured stable operation of the virtual environment and efficient management of the server infrastructure.

  • Server and Event Monitoring with Zabbix

    System & Network Administration
    Server and Event Monitoring with Zabbix — example of freelancer's portfolio work in category System & Network Administration
    Deployed a Zabbix monitoring system for the company’s server infrastructure. Configured collection of CPU, memory, disk, and network metrics, as well as monitoring of critical services and applications. Set up triggers and notifications for rapid incident response, and created dashboards and graphs for performance analysis and service availability tracking.

  • FreePBX System Deployment

    System & Network Administration
    FreePBX System Deployment — example of freelancer's portfolio work in category System & Network Administration
    Deployed and configured a FreePBX system for corporate telephony from scratch. Installed on a dedicated server, set up SIP trunks, internal extensions, and advanced call routing. Configured IVR menus, queues, call recording, voicemail, and reporting for management. Ensured full integration with corporate network and reliable telephony operations. The system provides stable, scalable, and efficient communication for all company employees.

Activity

  Latest proposals 10
Website - online store for selling mining equipment
564 USD
Proxmox + 2 Windows VM (BAS/SQL + RDS) + VPN
338 USD
Development of 2 landing pages for mini-courses on hair and scalp care
316 USD
Creation of an online store (WooCommerce)
451 USD
WordPress site for manufacturing services: SEO, applications, portfolio, cost estimation
451 USD
WordPress + Elementor specialist, WordPress Designer, website
550 USD
Need a business card website for metalworking
474 USD
Website for a fitness gym
474 USD
Creation of an auto parts website
564 USD
I am looking for a freelancer or a small team to create a modern website.
825 USD