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PROFESSIONAL EXPERIENCE

Technical Lead / Team Lead
TA-DA! / 1CallCentre
September 2024 – December 2025
Led a technical team of 8 system administrators and VoIP
engineers
Took ownership of technical decisions and infrastructure
architecture
Oversaw VoIP and infrastructure environment including Asterisk,
monitoring systems and containerized services
Mentored team members and supported professional growth
Coordinated task priorities and handled critical incidents

PAVLO
Improved system stability, monitoring and internal technical
processes
Supported telephony operations across 37 countries

NERKO
TECHNICAL LEAD / VOIP & INFRASTRUCTURE
Ensured stable processing of up to 500,000 calls per day
Acted as a bridge between business needs and technical
implementation
ENGINEER VoIP Engineer
1CallCentre
📍 POLTAVA, UKRAINE
📧 [open contact info](look above in the "contact info" section) 2023 – Present
📞 [open contact info](look above in the "contact info" section)
🔗 TELEGRAM: @PAVELNERKO Designed, implemented and maintained VoIP infrastructure based
on Asterisk
Worked with telecom providers and optimized call center
performance
PROFESSIONAL SUMMARY Developed automation solutions including Telegram bots
Technical Lead with strong background in VoIP, Maintained number inventory and routing logic
infrastructure and automation. Participated in AI-based automation of internal processes
Experienced in leading technical teams, making
architecture and operational decisions, mentoring System Administrator
TA-DA! Daily Household Goods
engineers and delivering stable production systems.
Focused on reliability, system optimization and 2020 – 2024
continuous improvement in VoIP and IT infrastructure Administered Linux and Windows servers
environments. Deployed and maintained monitoring systems (Prometheus,
Experienced in supporting high-load VoIP Zabbix, Grafana)
environments processing up to 500,000 calls daily Managed virtualization platforms (Proxmox, Hyper-V)
across 37 countries. Introduced Docker-based solutions
Supported internal IT infrastructure and services
KEY COMPETENCIES
Technical team leadership (SysAdmins / VoIP
Engineers) EDUCATION
Mentoring and onboarding
Task prioritization and responsibility ownership Poltava V. G. Korolenko National
Incident management and root cause analysis Pedagogical University
Process improvement and documentation
Large-scale VoIP environments
Master’s Degree — Computer Science Education (2019 – 2021)
Multi-country telecom operations
Bachelor’s Degree — Computer Technologies (2015 – 2019)
High call volume processing (500K+ calls/day)
INFRASTRUCTURE &
ARCHITECTURE ADDITIONAL INFORMATION
Linux (Ubuntu)
Windows Server 2012–2022 Strong communication skills and sense of responsibility
Virtualization: Proxmox, Hyper-V Experience in teaching and mentoring
Docker & containerized environments Able to work in high-load environments and take ownership of
Monitoring: Prometheus, Zabbix, Grafana results
Network and system troubleshooting