Fourth Factor Engineering, LLC strives to provide its customers with superior engineering analysis and processes to enhance an overall design and to ensure a design that is compliant with all applicable design, local, state, and federal requirements.



Fourth Factor Engineering specializes in developing and defining safety programs for complex and critical systems. Our philosophy is that complete systems safety influences design rather than just proving a product or a design is safe. We focus on integrating systems safety into the process from idea and inception to specifications development and design.

Our approach brings together methods and techniques to prevent, eliminate and control hazards and risks through key engineering principles and throughout the entire engineering process. Getting Fourth Factor Engineering involved from the beginning shows commitment to the entire safety process and allocates budgeted resources that keep safety costs controlled and potentially saves you infinite dollars associated with safety problems that arise late in the design process.


Graphic WBENC logo

What People are Saying:


I’ve known Liz and Dave personally for many years and believe them to be very competent in what they do. Based upon this relationship, I would not hesitate to recommend Fourth Factor as a technical partner in meeting your Safety Engineering requirements.

Steven Mattern

Senior System Safety Engineer

Bastion Technologies



CAGE: 68KV9 · DUNS: 966635315 · NAICS: 54-1330 · Fed EIN: 27-2120951 · MN EIN: 1518540 · SAM