Michael Halapchuk Email & Phone Number

Auckland, New Zealand

I am part of the team of IT enthusiasts, designing and supporting enterprise grade systems and solving complex business problems with innovative technology solutions. I welcome challenges and take personal responsibility to make things happen.My primary focus areas are:• Design and implementation of highly available business-critical systems.• Distributed, cloud-based systems and virtualisation.• Catalyst Cloud, OpenStack, Amazon Web Services.• Automation and… Show more I am part of the team of IT enthusiasts, designing and supporting enterprise grade systems and solving complex business problems with innovative technology solutions. I welcome challenges and take personal responsibility to make things happen.My primary focus areas are:• Design and implementation of highly available business-critical systems.• Distributed, cloud-based systems and virtualisation.• Catalyst Cloud, OpenStack, Amazon Web Services.• Automation and configuration management.• Web infrastructure solutions, troubleshooting and optimisation. Show less

Kyiv, Ukraine

Developed network infrastructure and managed business-critical applications, ensured alignment to business strategy. Designed and implemented server infrastructure for improved operational resiliency and performance. • Designed and maintained the Internet edge and DMZ infrastructure.• Built and maintained the network and system infrastructure, including the corporate email system, databases, web and telecommunications on a Cisco and Linux core.• Managed large-scale networking… Show more Developed network infrastructure and managed business-critical applications, ensured alignment to business strategy. Designed and implemented server infrastructure for improved operational resiliency and performance. • Designed and maintained the Internet edge and DMZ infrastructure.• Built and maintained the network and system infrastructure, including the corporate email system, databases, web and telecommunications on a Cisco and Linux core.• Managed large-scale networking environments.• Upgraded and optimised the network and firewalls.• Designed, implemented and documented various IT projects (firewall migration, proxy solution, distributed monitoring solution, anti-spam and anti-virus solution).• Developed and configured secure network connections to third-parties for file transfer and business application access.• Designed and implemented applications for file processing and information interchange with internal and external clients.• Engaged in PCI DSS compliance projects.• Implemented policies and procedures to ensure network and system security.• Provided deployment, administration and maintenance of Snort IDS.• Designed, implemented and maintained a DNS infrastructure for the enterprise.• Planned and implemented a high availability email system with mail filtering and content control.• Built and maintained the production environment as well as multiple development and test environments.• Managed all aspects of web architecture, including design, development, operations and back-up strategy.• Defined, documented and implemented standardised operating system images based on Linux and FreeBSD.• Performed periodic software maintenance and system upgrades.• Consolidated and upgraded legacy hardware.• Liaised with third parties and senior management.• Developed and maintained direct relationship with vendors and suppliers. Show less

Kyiv, Ukraine

Designed and managed network infrastructure. Maintained and monitored WAN, LAN and VPN networks. Managed vendor and supplier relationships.• Built and maintained the network infrastructure.• Performed configuration, implementation and maintenance of Cisco network equipment.• Implemented redundant, instant failover VPN tunnels between branch offices and the central office.• Evaluated, selected, deployed and configured enterprise network management tools for reporting and… Show more Designed and managed network infrastructure. Maintained and monitored WAN, LAN and VPN networks. Managed vendor and supplier relationships.• Built and maintained the network infrastructure.• Performed configuration, implementation and maintenance of Cisco network equipment.• Implemented redundant, instant failover VPN tunnels between branch offices and the central office.• Evaluated, selected, deployed and configured enterprise network management tools for reporting and inventory.• Planned and implemented network security design and security policy.• Implemented and maintained network firewalls and IDS.• Provided deployment, maintenance and monitoring of Linux and FreeBSD systems.• Maintained a corporate groupware and enterprise collaboration suite based on Lotus Notes/Domino. Show less

Kyiv, Ukraine

Planned, designed and implemented an enterprise network. Maintained and monitored network security. Troubleshot and resolved complicated problems in relation to WAN and LAN.• Developed and maintained the corporate network and related systems infrastructure.• Enhanced a multi-vendor networking environment covering routing, switching, firewalls across multiple branch offices.• Established a corporate-wide network security policy.• Designed and developed a custom system for… Show more Planned, designed and implemented an enterprise network. Maintained and monitored network security. Troubleshot and resolved complicated problems in relation to WAN and LAN.• Developed and maintained the corporate network and related systems infrastructure.• Enhanced a multi-vendor networking environment covering routing, switching, firewalls across multiple branch offices.• Established a corporate-wide network security policy.• Designed and developed a custom system for analysis and graphical representation of a load and utilization of the network and backend infrastructure.• Provided third-level technical support for network related problems. Show less

Kyiv, Ukraine

Had overall responsibility for UNIX servers at an Internet service provider. Deployed and supported network equipment.• Designed and implemented server infrastructure required for an ISP environment, including NAS, DNS, NTP, LDAP, RADIUS and TACACS+ servers, MySQL databases and Apache web servers.• Built local networks and installed structured cabling.• Administrated Linux, FreeBSD, and Solaris servers.• Administrated Cisco routers and switches.• Implemented and… Show more Had overall responsibility for UNIX servers at an Internet service provider. Deployed and supported network equipment.• Designed and implemented server infrastructure required for an ISP environment, including NAS, DNS, NTP, LDAP, RADIUS and TACACS+ servers, MySQL databases and Apache web servers.• Built local networks and installed structured cabling.• Administrated Linux, FreeBSD, and Solaris servers.• Administrated Cisco routers and switches.• Implemented and maintained network and system security.• Maintained ISP network documentation.• Configured and tuned customer network services.• Redesigned the Email system to offer per-user spam filtering and virus protection.• Developed shell scripts/applications for automation system administration tasks.• Provided second and third-level technical support on a roster basis. Show less

Kyiv, Ukraine

Built an Internet café from scratch (network and cabling setup, servers and PCs configuration, software installation).• Designed and deployed the local network.• Negotiated with ISPs and implemented a redundant Internet connection.• Maintained network and system security.• Deployed and maintained a custom billing system.• Supervised junior systems administrators.• Provided technical support to customers.