Sheena Nunley
Houston,TX
Summary
Strategic and results-driven Maintenance Engineering Leader with over 15 years of experience in high-stakes distribution, manufacturing, and military environments. A decorated U.S. Navy veteran with a track record of owning multimillion-dollar asset portfolios, driving reliability, and developing high-performing teams. Proven ability to dive deep into operational data, eliminate root causes, and build scalable maintenance strategies that improve uptime, reduce mean time to repair (MTTR), and increase Overall Equipment Effectiveness (OEE).
Overview
24
24
years of professional experience
6076
6076
years of post-secondary education
Work History
Lead Maintenance Technician II
ROSS DRESS FOR LESS DISTRIBUTION CENTER
Brookshire, TX
10.2022 - Current
- Lead maintenance strategy for a $50M+ AMHE portfolio including sortation, conveyors, robotics, and controls systems
- Manage CMMS across 200+ work orders improving planning, scheduling, and execution discipline
- Reduced unplanned downtime by 12% through condition-based monitoring and failure trend analysis
- Decreased mean time to repair (MTTR) by improving troubleshooting standards and technician readiness
- Designed and implemented structured training for 8+ technicians, reducing onboarding time by 30% and improving first-time fix rates by 18%
- Eliminated recurring failures saving approximately $200K annually in avoided downtime and production loss
- Improved Overall Equipment Effectiveness (OEE) by increasing availability and reducing performance losses across critical systems
- Partner with engineering and operations leadership on capital improvements and lifecycle strategy decisions
Maintenance Technician
H-E-B
Houston, TX
12.2019 - 01.2022
- Maintained uptime across $30M+ production assets in a 24/7 industrial environment
- Reduced repeat failures by 25% through root cause analysis and standardized maintenance practices
- Improved MTTR by strengthening troubleshooting processes and technician capability
- Mentored junior technicians on motors, PLCs, hydraulics, and mechanical systems
Engineering Technician
EPSILON SYSTEMS
San Diego, CA
05.2018 - 01.2019
- Provided engineering-level support for Navy elevator and mechanical systems critical to operations
- Authored technical manuals and maintenance strategies improving system reliability and safety
- Delivered data-driven corrective actions to resolve complex system failures
Senior Event Coordinator / Account Manager
EVERYBODY LOVES BALLOONS
Houston, TX
09.2012 - 05.2018
- Managed full-scope operations with budgets exceeding $500K, coordinating vendors and logistics for high-profile clients
- Applied planning, risk management, and cross-functional leadership to deliver complex projects under tight deadlines
Engineman Second Class / Maintenance Supervisor
U.S. NAVY
USS NIMITZ (CVN-68)
09.2005 - 09.2012
- Directed maintenance operations for $100M+ auxiliary systems including hydraulics, elevators, and propulsion support equipment
- Achieved 98% preventive maintenance compliance supporting sustained operational readiness during deployments
- Led and developed 20+ personnel, improving execution accuracy, safety performance, and accountability
- Reduced downtime and improved availability through disciplined maintenance planning and execution
- Conducted incident investigations implementing corrective actions that eliminated recurring failures
Engineering Fireman / Junior Mechanical Technician
U.S. NAVY
USS TRUMAN (CVN-75)
01.2002 - 01.2005
- Operated and maintained shipboard systems including pumps, HVAC, conveyors, and support equipment
- Managed calibration program ensuring compliance with NAVSEA standards
- Served in high-responsibility operational roles under demanding conditions
Education
Robotic Technician Training Certificate -
University of Houston
Maintenance Technician in Training II -
Ross Stores
Bachelor’s - Interdisciplinary Studies
University of Houston Downtown
Engineering Common Core -
U.S. Navy
Safety Technician School -
U.S. Navy
Skills
- Reliability-Centered Maintenance
- Predictive Maintenance
- CMMS Optimization
- Root Cause Analysis
- MTTR Reduction
- Downtime Elimination
- Asset Lifecycle Strategy
- Overall Equipment Effectiveness (OEE)
- Workforce Development
- Leadership
- Compliance
- Mechanical & Electrical Systems
Education And Professional Development
- Robotic Technician Training Certificate, 163, University of Houston, 09/01/25
- Maintenance Technician in Training II – Electrical, 200, Ross Stores, 01/01/23
- Bachelor’s in Interdisciplinary Studies, 96, University of Houston Downtown, In Progress
- Engineering Common Core, U.S. Navy
- Safety Technician School (NEC 9571), U.S. Navy
Military Service And Awards
- Navy Achievement Medal, Recognized for superior performance, leadership, and mission impact
- Good Conduct Medal, Demonstrated discipline, professionalism, and consistent excellence
- Surface Warfare and Aviation Warfare Qualified
- U.S. Navy Veteran with 10+ years of service aboard nuclear aircraft carriers
Maintenance Engineering And Leadership Impact
- Built scalable workforce training programs improving technician proficiency and onboarding efficiency
- Drove predictive maintenance through deep analysis of failure trends and CMMS data
- Improved asset lifecycle performance and increased Overall Equipment Effectiveness (OEE) through proactive maintenance strategies
- Consistently deliver measurable results through ownership, accountability, and high execution standards
Military Leadership Experience
- U.S. Navy, USS Nimitz (CVN-68), Engineman Second Class / Maintenance Supervisor, 09/01/05, 09/01/12, Directed maintenance operations for $100M+ auxiliary systems including hydraulics, elevators, and propulsion support equipment, Achieved 98% preventive maintenance compliance supporting sustained operational readiness during deployments, Led and developed 20+ personnel, improving execution accuracy, safety performance, and accountability, Reduced downtime and improved availability through disciplined maintenance planning and execution, Conducted incident investigations implementing corrective actions that eliminated recurring failures
- U.S. Navy, USS Truman (CVN-75), Engineering Fireman / Junior Mechanical Technician, 01/01/02, 12/31/05, Operated and maintained shipboard systems including pumps, HVAC, conveyors, and support equipment, Managed calibration program ensuring compliance with NAVSEA standards, Served in high-responsibility operational roles under demanding conditions
Timeline
Lead Maintenance Technician II
ROSS DRESS FOR LESS DISTRIBUTION CENTER
10.2022 - Current
Maintenance Technician
H-E-B
12.2019 - 01.2022
Engineering Technician
EPSILON SYSTEMS
05.2018 - 01.2019
Senior Event Coordinator / Account Manager
EVERYBODY LOVES BALLOONS
09.2012 - 05.2018
Engineman Second Class / Maintenance Supervisor
U.S. NAVY
09.2005 - 09.2012
Engineering Fireman / Junior Mechanical Technician
U.S. NAVY
01.2002 - 01.2005
Robotic Technician Training Certificate -
University of Houston
Maintenance Technician in Training II -
Ross Stores
Bachelor’s - Interdisciplinary Studies
University of Houston Downtown
Engineering Common Core -
U.S. Navy
Safety Technician School -
U.S. Navy