Larry Dennis Dallmann Jr
West Lakes, SA
Summary
Accomplished and multidisciplinary professional with an impeccable record of accomplishment and reputation built on 25 years of experience. Commendable history as the visionary and thought leader for advancing the strategic direction of organizations through innovation and organizational leadership, critical to growth and scalability. Decades-long leadership experience and a record of accomplishment of delivering tangible results in a highly scrutinized field of nuclear power generation. Hands-on mentor with widespread acumen, executive-level competencies, and a history of optimizing organizational performance at every level, from small teams to department wide organizations. Strength and success in driving business decisions that show immediate returns on personnel and project management. Citizen of the United States and Permanent Resident of Australian, currently maintains US DOD/DOE security clearance and available for employment.
Overview
26
26
years of professional experience
1
1
Certification
Work History
Mechanical Principal Technical Officer
ASC Pty Ltd
03.2025 - Current
- Responsible for supporting Nuclear Submarine Pathway, focusing on integrating nuclear safety requirements into the construction and maintenance of Australia’s future submarines. Providing expert advice on nuclear technologies, supporting the development of nuclear training, and ensuring compliance with nuclear safety standards.
Relocation Break
United States to Australia
05.2024 - 03.2025
Acoustic Engineer
DOD Navy Civilian
08.2023 - 05.2024
- Responsible for detecting and evaluating structure-borne vibration and sound waves making recommendations on corrective actions to improve acoustic performance onboard all classes of US Navy submarines to the technical warrant holder. Responsible for acoustic engineering evaluation in support of and preparation for the new designed US Navy trident missile class submarine. Coordinated and assisted development of acoustic engineer training materials for newly reported employees.
Nuclear Power Regional Technical Advisor and Mentor
US Navy
08.2020 - 08.2023
- Responsible for providing evaluation, performance improvement recommendations, technical expertise, and guidance on personnel performance to the Commanders of Submarine Squadron Seventeen, Submarine Squadron Nineteen and Submarine Development Squadron Five. Developed credibility with all levels of each submarine crew, squadron staff, and Commander Submarine Group Nine and staff to cultivate a culture of problem solving and continuous improvement. Coordinated and conducted training, oversight, and auditing of over 3500 employees encompassed in 25 submarine crews within squadron.
Nuclear Power Systems Engineer and Senior Advisor
US Navy
01.2018 - 08.2020
- Lead Systems Engineer at Naval Reactors Head Quarters (NRHQ) for ten trident missile submarines and two naval shipyards and three intermediate maintenance facilities. Coordinate interdisciplinary efforts both internal to NRHQ and external with the submarine fleet, shipyards, contractors, research laboratories, and other naval organizations. Collaborated to monitor, correct, and preempt technical issues, update submarine nuclear power plant operating policies and procedures, and provide engineering support to various program offices and on-site managers. Developed, implemented, and monitored a qualification and certification program for 24 NRHQ Engineers ranging in experience from 0-19 years. Supported the training and evaluation of the Prospective Nuclear Engineering Officer and Prospective Commanding Officer development pathways at NRHQ.
Nuclear Power Plant Department Manager
US Navy
10.2014 - 01.2018
- Responsible for providing mentorship and support to the Head of the Engineering Department on all aspects of safe and reliable nuclear powered submarine maintenance and operations. Provided sage expertise to the Commanding Officer on ship wide matters of personnel administration, training, maintenance and operations qualification, and performance evaluation. Provided scheduling, execution, and evaluation on casualty response and continuous self-improvement for the submarine crew comprised of 165 Officers and Sailors. Assigned to this ship for the sole purpose of assessing widespread performance & culture issues. Quickly assessed each leader and assigned them specific tasks to turn around every aspect of the nuclear department. Increased Sailor retention 53% and graded nuclear department performance rose from lowest annual inspection grade in squadron of 14 submarine crews to highest.
Nuclear Power Mechanical Technical Advisor
US Navy
12.2012 - 10.2014
- Responsible for providing evaluation, performance improvement recommendations, technical expertise, and guidance on personnel performance to the Commander of Submarine Squadron Seventeen. Developed credibility with all levels of each submarine crew and squadron staff to develop a culture of problem solving and continuous improvement. Coordinated and conducted training, oversight, and auditing of over 500 employees encompassed in 14 submarine crews within squadron.
Nuclear Power Plant Mechanical First-Line Supervisor
US Navy
02.2008 - 12.2012
- Supervised 18 personnel in the performance of mechanical operations, maintenance, and record keeping for a submarine nuclear propulsion plant mechanical systems including sea connected systems, steam systems, radiological controls, water purification systems, and air-conditioning (HVAC) systems. Led watch teams in the operation and casualty response of submarine reactor operation. Coordinated and executed the engineering departments training, qualification and certification program for 60 nuclear-trained Sailors and Officers.
Nuclear Power Plant Mechanical Lead Operator and Instructor
US Navy
12.2004 - 02.2008
- Supervised 10 personnel in the performance of mechanical operations, maintenance, and record keeping for a submarine nuclear propulsion plant mechanical systems including sea connected systems, steam systems, radiological controls, water purification systems, and air-conditioning (HVAC) systems. Trained and certified over 150 enlisted and officer students on the operations of a nuclear propulsion plant. Performed operations, coordination, and oversite for a Naval Nuclear Propulsion plant operating under both Department of the Navy and Department of Energy regulations.
Nuclear Power Plant Mechanical Operator
US Navy
09.1999 - 12.2004
- Performed mechanical operations, maintenance, and record keeping for a submarine nuclear propulsion plant mechanical systems including sea connected systems, steam systems, radiological controls, water purification systems, and air-conditioning (HVAC) systems. Performed operational and oversight aspects of the quality assurance program ship wide.
Education
Bachelor of Science - Human Resource Management
Milano New School University
New York, NY01-2007
Skills
- Cross-functional collaboration
- Analytical report composition
- Strategic planning
- Creative problem solving
Certification
- Naval Nuclear Propulsion Pipeline 2001
- Certified Instructor at Nuclear Power Training Unit 2005
Timeline
Mechanical Principal Technical Officer
ASC Pty Ltd
03.2025 - Current
Relocation Break
United States to Australia
05.2024 - 03.2025
Acoustic Engineer
DOD Navy Civilian
08.2023 - 05.2024
Nuclear Power Regional Technical Advisor and Mentor
US Navy
08.2020 - 08.2023
Nuclear Power Systems Engineer and Senior Advisor
US Navy
01.2018 - 08.2020
Nuclear Power Plant Department Manager
US Navy
10.2014 - 01.2018
Nuclear Power Mechanical Technical Advisor
US Navy
12.2012 - 10.2014
Nuclear Power Plant Mechanical First-Line Supervisor
US Navy
02.2008 - 12.2012
Nuclear Power Plant Mechanical Lead Operator and Instructor
US Navy
12.2004 - 02.2008
Nuclear Power Plant Mechanical Operator
US Navy
09.1999 - 12.2004
Bachelor of Science - Human Resource Management
Milano New School University
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