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Mitel Sr. Support Engineer

Black Box
2701 Dallas Parkway (Show on map)
Jul 15, 2026

Black Box is seeking a highly skilled Mitel Sr. Support Engineer to provide advanced technical support for complex voice, networking, and collaboration solutions, with a strong focus on Contact Center. This role serves as the highest level of escalation for issues that cannot be resolved by Tier 1 or Tier 2 teams.

Key Responsibilities
  • Provide Tier 3 support and troubleshooting for hardware, software, network, connectivity, and telecommunications issues.
  • Support and maintain Mitel solutions, including MiVoice Business, Mitel 200, MiCollab, MiContact Center (MiCC), and SIP technologies.
  • Perform advanced diagnostics, root cause analysis, and resolution of escalated customer issues.
  • Escalate issues to manufacturers or carriers when required and coordinate with Tier 4 support.
  • Document troubleshooting findings, solutions, and best practices for future reference.
  • Monitor ticket trends and contribute to continuous service and process improvements.
  • Ensure service delivery meets customer expectations and established SLAs.
  • Collaborate with internal teams to deliver outstanding customer experiences.
Qualifications
  • Bachelor's degree in Information Technology or related field preferred; equivalent experience considered.
  • 5+ years of technical support experience in a Managed Services Provider (MSP) or technology services environment.
  • Experience supporting Mitel unified communications platforms.
  • Strong Layer 2/3 networking knowledge, including LAN, WAN, DNS, SIP, and telecommunications technologies.
  • Excellent troubleshooting, problem-solving, and root cause analysis skills.
  • Experience with ServiceNow or similar ticketing platforms.
  • Relevant Mitel certifications preferred.
Skills & Competencies
  • Customer-focused with a commitment to service excellence.
  • Strong analytical and decision-making abilities.
  • Excellent communication and interpersonal skills.
  • Ability to manage multiple priorities in a fast-paced technical environment.
  • Continuous learner with a passion for emerging technologies and best practices.

Black Box is an Equal Opportunity Employer.

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