99 Mission Critical is a new critical environment performance & risk audit platform designed specifically for multi-tenant colocation operators. This is an opportunity for a senior mission-critical engineer to take a technical leadership role in shaping how this service is delivered, refined, and scaled.

This is a hands-on, high-autonomy role for someone who wants to apply their deep operational expertise inside an early-stage and fast-moving environment, where your actions are directly tied to customer outcomes and company growth.

You will be expected to help define and iterate on service scope on a customer-by-customer basis, as well as share and defend your opinions.

Main Responsibilities:

• Lead comprehensive, on-site Critical Environment Performance & Risk Audits within live multi-tenant colocation facilities
• Serve as Technical Lead for the audit service, exercising discretion over methodology refinement, scope prioritization, instrumentation standards, and service evolution based on field experience.
  
• Evaluate mechanical plant performance including chilled water systems, economizers, pump staging logic, VFD optimization, partial-load efficiency behavior, and redundancy mode impacts on efficiency.
  
• Conduct hands-on airflow and white space diagnostics including plenum pressure mapping, containment validation, bypass airflow identification, rack-level ?T verification, and thermal imaging analysis.
  
• Identify overcooling, economizer underutilization, fan overspeed, low ?T syndrome, and inefficiencies tied to redundancy staging.
  
• Design and deploy short-term instrumentation strategies to validate system performance and quantify inefficiencies.
  
• Quantify defensible kW reduction and PUE improvement ranges from operational adjustments.
  
• Assess operational risk exposure including mechanical redundancy gaps, UPS/battery lifecycle risk indicators, firmware obsolescence awareness, open corrective maintenance trends, and asset health concerns.
  
• Evaluate telemetry reliability including sensor drift, alarm threshold validity, and monitoring blind spots.
  
• Identify gaps between documented preventative maintenance practices and observable field execution.
  
• Prioritize findings across energy, reliability, and lifecycle risk dimensions.
  
• Translate technical observations into structured audit reports, risk heat maps, and executive-ready summaries.
  
• Participate in client-facing sales discussions, site tours, executive briefings, and presentation of findings.
  
• Contribute to refinement and evolution of the audit framework based on real-world field experience.
• Advise leadership on service roadmap, expansion opportunities, and technical positioning based on real-world audit findings.

Qualifications:

• 10–15+ years of mission-critical data center operations experience.
  
• Minimum 5+ years in multi-tenant colocation facilities (hyperscale-only experience is insufficient).
  
• Direct hands-on experience operating in live production environments.
  
• Deep mechanical plant optimization expertise.
  
• Proven hands-on airflow diagnostics experience in active white space environments.
  
• Experience conducting structured or semi-structured facility performance or risk assessments.
  
• Strong systems-level understanding across mechanical and electrical infrastructure.
  
• Working knowledge of UPS efficiency behavior, redundancy staging tradeoffs, battery lifecycle considerations, and infrastructure inefficiencies at partial IT load.
  
• Experience identifying asset health, lifecycle, or maintenance execution risks in operational environments.
  
• Demonstrated ability to quantify estimated kW and PUE impact from operational changes.
  
• Comfortable presenting technical findings to facility leadership and executive stakeholders.
  
• Structured thinker capable of prioritizing issues across performance, risk, and feasibility dimensions.
• High professional credibility in front of experienced operators.

Must be willing to travel to local and nationwide customer sites.

About 99 Mission Critical

99 Mission Critical is a new critical environment performance & risk audit platform designed specifically for multi-tenant colocation operators. We deliver quantifiable and actionable PUE reduction and energy savings opportunities through deep physical site audits of critical mechanical infrastructure.

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