Danielle Mui Mark

Technical Leader | Gas Decarbonization
San Francisco Bay Area linkedin.com/in/danielle-mark

Professional Overview

Professional Engineer with 15+ years in natural gas industry engineering, operations, and program leadership, specializing in decarbonization strategy. Leads hydrogen blending technical readiness and low-carbon gas integration planning, translating complex technical challenges into actionable strategies that align stakeholders across engineering, operations, and regulatory functions.

Skills

Technical Expertise

  • Emerging gas decarbonization (hydrogen, RNG, CCUS)
  • GHG emissions analysis
  • Pipeline integrity & gas system operations
  • Regulatory compliance (CPUC, CARB, CFR)
  • Risk assessment & failure analysis
  • Fluid mechanics & thermodynamics

Program & Project Management

  • Technology road mapping & portfolio management
  • Enterprise implementation & change management
  • R&D program leadership
  • Cross-functional stakeholder alignment
  • Budget management ($2M+ programs)

Work Experience

PACIFIC GAS & ELECTRIC COMPANY (PG&E)
Expert Engineer, GHG Emission Strategies
2022 - Present
  • Provide technical direction on hydrogen blending strategy and integration pathways for 50,000-mile natural gas pipeline system, guiding feasibility assessment and infrastructure readiness planning.
  • Serve as technical witness in CPUC hydrogen blending proceeding, presenting technical feasibility, safety and operational readiness for California's first utility-scale gas transmission hydrogen demonstration.
  • Developed and delivered PG&E's first hydrogen blending training program to 800+ employees, accelerating organizational readiness across engineering and operational teams.
Senior Engineer, R&D and Innovation
2018 - 2022
  • Built strategic partnerships with 12 global research organizations (Sandia, PRCI, etc.) and 15+ technology vendors, advancing a $5M portfolio of 25+ decarbonization R&D initiatives.
  • Authored 10-year technology roadmap defining ~$2M/yr investment strategy across hydrogen, RNG, and carbon capture aligned with California's 2045 carbon neutrality target.
Gas Engineer, R&D and Innovation
2016 - 2018
  • Led a $2M+ enterprise technology program delivering digital traceability of gas assets, improving system-wide data integrity and supporting long-term infrastructure decision-making.
  • Drove compliance with new asset encoding standard across 6 OEM partners, enabling digital asset management for all gas distribution pipeline components.
Operations Engineer, Gas Control Center
2014 - 2016
  • Designed and implemented a gas emergency management framework adopted across ~2,000 personnel, integrating operational teams and data streams to strengthen system safety and response coordination.
  • Applied operational incident analysis to identify systemic risks and drive safety improvements across gas control operations.
ENBRIDGE GAS DISTRIBUTION
Senior Engineering Project Leader / Engineering Project Leader
2011 - 2014
  • Justified $0.5M capital investment in hydrovac excavation equipment through executive business case, delivering $1M+ annual O&M savings.
  • Led pipeline materials standardization initiative, transitioning to 250+ standardized materials and improving system integrity across gas pipeline infrastructure.
  • Improved pipeline reliability through root cause failure analysis and New Product Introduction programs, evaluating and deploying materials from testing through operational deployment.

Volunteer Experience

President, Women in STEM Employee Resource Group
Pacific Gas and Electric Company
California | 2020
  • Led 6-member board advancing recruitment, retention, and leadership development initiatives for 200+ technical women.

Education

Bachelor of Applied Science (BASc) in Chemical Engineering
University of Waterloo
Canada | 2011

Certifications

Professional Engineer (P.E.)
Board for Professional Engineers, Land Surveyors, and Geologists
California | 2020

Beyond Work

Fashion Design & Patternmaking

Self-taught patternmaker and sewist who designs and constructs custom clothing pieces, applying engineering problem-solving to convert creative concepts into three-dimensional wearable designs. Creator of a YouTube channel (3,000+ subscribers since 2023) offering simplified patternmaking methods and sewing tutorials, translating technical skills into accessible educational content.

Guinea Pig Rescue Volunteer

Active volunteer with The Cavy & Hammy Haven since 2020, contributing to adoption events and crafting fleece liners and cuddle pods for rescued guinea pigs. Former foster parent to three guinea pigs who became cherished family members.

World Travel

Enthusiastic traveler who has explored diverse cultures and landscapes across North America, Europe, and Asia.