Where engineering meets trust across the lifecycle
With over 33 years of experience in metro rail and safety assurance, we have led cross-disciplinary engineering teams and helped shape major projects in Bangkok and Australia. Today, we are committed to sharing this expertise and supporting the next generation of engineers through innovative solutions, mentorship, and knowledge sharing.



Trust-driven engineering for every phase of your journey
Values
Integrity
Always ensuring safety and compliance
Mentorship
Supporting young engineers with practical wisdom
Expertise
33+ years of real-world systems assurance experience
Collaboration
Building bridges across disciplines
— Founder's Journey
Timeline
Engineering study and specialisation in international schools
(MEng, Structures from AIT, Bangkok), (PhD from The University of Tokyo, Japan)
Early engineering career, technical foundations (employment with Obayashi Corporation in Tokyo for designing very large underground
LNG Storage tanks, worked for Obayashi to design and build the first Metro subway Project (Blue Line) in Bangkok)
Transition to design, engineering management; work with systems engineering & assurance professionals
(employment with Obayashi Corporation in Sydney, Employment with John Holland)
Transition to Leadership as SESA Manager, mentoring teams (employment with John Holland)
Leadership as SESA Manager, mentoring teams; transitioning to Retired from corporate role, now mentoring, consulting, and teaching
(employment with CPB Contractor)
“My Mission: making complex systems safer & simpler for the next generation”
“I believe engineering isn’t just about technical excellence. It’s about clarity, collaboration, and passing on knowledge. That’s why I dedicate my time to helping engineers and project leaders avoid mistakes, learn faster, and build safer systems.”
Testimonials
Brian Thoroman
BSc, MSc, PhD, CPE, John Holland Pty Ltd
Dushan
RAM Manager, John Holland
Andy Petrie
Director Systems and Safety Assurance, ARCH Services
I had the privilege of working with Mahesh on a major railway infrastructure project, whose depth of experience in hazard log management and requirements traceability consistently ensured robust safety outcomes and compliance and provided invaluable structure to the safety engineering process.
What truly sets him apart is his approachable and friendly manner, which fosters open communication and collaboration. Mahesh is always receptive to new ideas and proactively seeks ways to improve processes and deliverables driving continuous improvement across the industry
Martin Stenhouse
Principal Consultant, Abbott Risk Consulting Ltd
Mahesh brings a highly skilled approach to his work. His experience working with construction teams, coupled with a strong technical background means he can ensure the delivery teams understand their obligations under contract and specification requirements and can track their progress throughout the project phases. Most recently in my role as Project Director on Sydney Metro Western Sydney Airport SBT Project I saw first hand Mahesh’s ability to work with multiple external stakeholders including the follow on contractor (SSTOM), adjacent projects (SCAW) as well as the Independent Safety Assessor and NAC to achieve a successful project completion
Will Freelander
CPB
I had the privilege of working closely with Mahesh on the Western Sydney Airport Metro project, which encompassed the design and construction of six new Metro stations, extensive civil works, and both north and south tunnel sections. Mahesh was a key contributor to the project’s success, distinguishing himself through his technical expertise and exemplary professional conduct...
Raj Pathak
M.Sc. BEng. CEng MIET | MIEAust CPEng NER | Principal RAM Engineer ARCADIS
It has been my pleasure to know Mahesh for circa 20 years where we first met on the Lane Cove Tunnel project. His role at the time was tunnel design manager, reporting to me as the Project Construction Director. During this time Mahesh always displayed a thorough and in-depth knowledge of design/ engineering principles that spearheaded the timely delivery of design ahead of construction and ..
Terry Sleiman
Exec Project Director -CPB Contractors
Mahesh worked directly for me on Canberra Light Rail Stage 2A project from early 2024 until late 2025, leading the Systems and Safety Assurance team. Under his leadership, he has ensured that all relevant SESA requirements have been included as part of the design process which have then been migrated, where relevant, into the construction process to enable an efficient project close out process.
This has set up the project for success.
Julian Sharp
Project Director - CPB Contractor Pty Ltd
Working with Mahesh Rimal on the Western Sydney Airport – Station Boxes and Tunnelling project was a great experience due to his thorough safety assurance knowledge and unwavering support. His valuable insights into safety processes and standards guided our team through complex challenges and ensured robust compliance. Mahesh’s mentorship and collaborative approach were key factors in my professional growth and confidence in safety engineering practices.
Hassam Ul Haq
MEng. BSc. | MIEAust | Systems Engineering and Safety Assurance ARCADIS

