Senior Network/Infrastructure Engineer with 28+ years of IT experience

Alan Bubienczyk

Senior System/Infrastructure Engineer

Contact information

**** ***** ********* ***., *******, US, 60638 *.**********@*****.*** 773-***-****

linkedin.com/in/alan-bubienczyk-26a58622

Professional summary

Senior System/Infrastructure Engineer with over 28 years of extensive experience in network security, Microsoft Office 365, and VMware virtualization. Demonstrates analytical prowess in optimizing network performance and implementing innovative solutions across international corporate offices. Proficient in WSUS, VPN, and Active Directory, committed to driving technological advancement and supporting organizational growth.

Employment history

Electrical apprentice

B&M Electrical Services – September 2024 – present

I am open to travel, experienced handy man working construction and maintenance on commercial and residential properties.

Experience troubleshooting branch circuits, 3 phase circuits, low voltage communication and low voltage data. Proficient in conduit bending and installation with familiarity of local electrical codes.

Good client communication skills.

Senior System/Infrastructure Engineer

CA Ventures, Chicago — Nov 2015 - Sep 2024

Designed, purchased installed, supported and maintained all hardware in corporate office, including Cisco core, wireless controllers 2504, and access points 2802 (Cisco 5512, NGF 2130, Meraki MX100, and MX250 firewall) in corporate offices, installed patches and upgrades. Designed and implemented VLAN structures into existing layer-2 network. Hardened Security of the networks as company was growing. Monitored network usage, anticipated problems, and suggested solutions.

Implemented the necessary controls and procedures to protect information systems Performed periodical network penetration testing in all offices and continued working on securing corporate office environment. VPN installation, maintenance and administration.

Design and integrated network architecture for international corporate offices in Chicago, Denver, New York, and London. Strong understanding of architecture and design in the active directory, Power Shell, and synchronization with Azure.

Built physical hosts virtual server environment, with guest Microsoft operating system: Windows 2012, 2016 and 2019 servers. VMware migrations and virtualization local and in cloud. Upgraded VM hosts and updated guest servers to be able to use vCenter.

Implemented Active Directory, worked with currently documented best practices. Worked and utilized Office 365 Intune suite, including: autopilot, patch management, application management, MDM, porting phone numbers to Microsoft Teams and auto attendant setup and after hours setup .

Managed new office and expansion projects and worked closely with colleagues to meet team goals, deadlines and improve processes and practices.

Responsible for keeping support and maintenance contracts current. Purchased computer equipment.

Traveled to new office locations to complete network, conference room – using Crestron and Polycom hardware, branding displays and workstation setup.

Worked with vendors to get best prices and services to save money for company.

Supported Executives in corporate and remote office users and working with IT Team to resolve issues and provide solutions.

Senior System Engineer

Center for Economic Progress, Chicago — May 2009 - Oct 2015

Led AD migration, ensuring seamless user transition with minimal downtime.

Administered Microsoft Exchange, optimizing email communication and server performance. Diagnosed and resolved networking and security issues, maintaining business continuity.

Implemented WSUS server on Windows and VM, improving network infrastructure efficiency.

Fostered cross-functional partnerships to align IT initiatives with business objectives, driving technological advancements and operational efficiency.

Optimized Exchange server performance, enhancing email communication efficiency. Diagnosed and resolved complex networking issues, ensuring continuous business operations.

Pioneered R2 replication across three sites, significantly boosting data redundancy and recovery capabilities. Implemented cutting-edge WSUS server solutions for streamlined patch management.

Fostered cross-functional partnerships, aligning IT initiatives with business goals. Led seamless AD migration, minimizing downtime and maximizing user satisfaction.

System / Infrastructure Engineer

CB Richard Ellis, Inc., Chicago, Illinois — Dec 1999 - May 2009

Established and managed Active Directory Domain, enhancing network efficiency and security. Configured centralized DHCP, optimizing network performance across multiple locations.

Led nationwide deployment of Windows servers, reducing operational costs significantly. Implemented server backup solutions, ensuring data integrity and availability nationwide. Coordinated office moves and closures, streamlining company operations and resource allocation.

Implemented comprehensive server backup strategies and infrastructure maintenance protocols, safeguarding critical data and ensuring optimal system performance.

Education

Bachelor in Electronic engineering and Technology

DeVry University-Illinois, Addison, Illinois, Graduated in February 1995

Courses

MCITP - MicroTrain Technologies

CCNA Boot Camp - Directions Training

Novell Advanced Network Administration

A+ Certification

Skills

Residential Electrical, Commercial Electrical, Handyman work (construction, drywall, etc.)

Microsoft Office 365 MDM, Power Shell, Microsoft Teams, Cisco, Meraki, Ubiquity, VLAN, Windows, SQL

WSUS, VPN, Active Directory, VMware, Azure Windows Server, Cisco NGF Firewall, Network Security, Data Recovery, CCNA,

R2 Replication, DFS, Microsoft Exchange, GPO, DHCP, Novell Netware, Intune

Languages

English, Polish

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