IT Systems Engineer - Tier 3

About the Company

STACK Cybersecurity is a 20‑year full‑service Managed Service Provider (MSP) as well as a growing Managed Security Service Provider (MSSP). We are an IT consulting company that provides ongoing support and management of customer network environments, workstations, and servers with an emphasis on Cybersecurity‑first solutions.

We are currently seeking talented Information Technical Support professionals for a full‑time position as an IT Support Technician – Tier 3. The Tier 3 Technician is responsible for advanced technical support of desktop, server, and network environments along with advanced capabilities in Cybersecurity tactics such as Indicators of Compromise, Email Security, and SIEM logging.

• Advanced Windows technical support relating to common technical issues involving Microsoft’s core business applications (MS Office, Word, Excel, Outlook, Entra  Intune), workstation and server operating systems
• Support of backup solutions and processes
• Advanced network support – Layer 3 and above
• Enterprise firewall experience, including IPSEC, NAT, policies, rules and general configuration
• Applications support, including installing, configuring, migrating, and troubleshooting applications and third‑party line‑of‑business applications
• Malware, spam, and antivirus support on desktops and remediation of cybersecurity incidents
• Strong communication skills when interacting with external clients; keeping them informed of tickets before, during, and after service requests

• Familiarity with tools such as EDR (Endpoint Detection and Response), MDR (Managed Detection and Response), SASE (Secure Access Service Edge), intrusion prevention systems (IPS), and vulnerability scanners

• Apply problem‑solving skills effectively even in high‑pressure situations
• Prioritize and address security incidents promptly

• Present security findings and recommendations to senior leadership
• Excellent written and verbal communication skills

• Strong attention to detail when analyzing security data
• Organize findings and create comprehensive reports

• Work independently on security tasks
• Collaborate effectively within a team environment
• Deadline and detail-oriented
• Proficiency in English
• Excellent communication skills
• Requires on‑time, present work ethic
• After‑hours work may be required to accomplish tasks
• Weekend work may be required to accomplish tasks
• On‑call rotation participation will be required

• Health Care Plan (Medical, Dental & Vision)
• Retirement Plan (401(k), IRA)
• Life Insurance (Basic, Voluntary & AD&D)
• Paid Time Off (Vacation, Sick & Public Holidays)
• Training & Development