Our People

The people behind GCSE are more than engineers. Our team is more of a multi-disciplinary brains trust, here to provide practical and strategic advice and cost-effective solutions spanning the structural engineering spectrum.


Meet our multi-disciplinary engineering brains trust and find out more about GCSE our engineering philosophy. Better still, contact our team and experience our unique approach to providing effective engineering solutions for yourself.



Paolo Giammarco

Director Consultant Engineer

B.Sc.Eng. (Civ Eng) F.I.E. Aust C.P. Eng,  Engineers Australia NER Registered,
Registered as Professional Engineer  and Design Practitioner  to Design and Building Practitioners Act NSW 2021. 


Paolo's illustrious career began in 1973, tackling a range of projects – from bridge and railway building to industrial engineering. Since then, he has proven his ability to deliver innovative engineering solutions for myriad projects, time and again.


Instead of listing the types of projects Paolo has tackled during the course of his career, we thought it more prudent to list the types he hasn’t – but to be honest we’re having trouble thinking of any.


Since completing his degree in 1972, Paolo career has taken him around the world, tackling a diverse range of roles and challenges in Australia, Europe. Today, as a leading figure at GCSE, his primary focus is training and conceptual designs, drawing on his extensive experience, which spans:


Structural design of large steel and concrete structures (industrial, marine, slipways, bridges, retaining walls) Further The structural work recorded is all my personal work over the years and certainly in the last 3 years has included multi storey residential high rise , medium density inclusive of foundations and structure , including piling , and earthquake code compliance and currently working on six storey frame construction designs including  post-tensioned transfer slabs, bridge design, certifications.


My present professional practices in the functions following:

  • Project Management / Coordination Skills
  • Structural Engineering
  • Fire Safety Engineering
  • Environmental Engineering
  • Building Code of Australia
  • Geotechnical   and Subdivisional Engineering
  • Civil Engineering Marine design
  • Temporary works design
  • Constructability
  • Design management
  • Project budgets
  • Feasibility design
  • Heavy lifting

 Checkout my Linkedin Profile


Michael Gray

Construction Director Engineer

B.Sc.Eng.(Civ Eng) (Hons). F.I.E. Aust C.P. Eng


Michael Gray has over 40 years of design, project and construction management experience on rail, mining, road, tunnel, marine, airfield, power and defence works. Throughout his career he has developed and delivered significant projects for contractors, State and Local Governments, defence and major private organisations which have utilised his solid leadership skills and specialist knowledge.

Michael is well known to the construction industry and is respected for his consultative and team approach to working through all project matters. Michael’s most recent role has been with AECOM as Construction Director on the Ravensworth North Project (infrastructure and rail) and before that he was Operations Manager for BMD Constructions, had senior roles with Kellogg Brown and Root, Gutteridge Haskins and Davey, Thiess Bros and Thiess Contractors, Roads & Traffic Authority (RTA) and the Electricity Commission NSW. He has always worked in the development and delivery of major infrastructure and has capabilities in planning, design management, approvals coordination and with contract delivery.

Michael has the skills necessary to take any project through design and cost validation, design finalisation, commercial close and government approvals. He has had numerous industry workings with most major and Tier 2 contractors over many years and is able to operate in most arenas from concept planning to ultimate project delivery as design manager or contract superintendent through to construction management. His broad industry experience, from rail infrastructure,  power industry, coal mine planning and delivery and major civil and urban development works gives Michael a confident overview of all aspects of construction delivery. He is regarded to be well able to work with owner teams and approval authorities to achieve joint desired outcomes.

Michael specialises in planning and delivery within time and cost budget targets.





Tim Rannard

Principal Engineering Geologist

B.Appl. Sc. (Geology )


Tim began his career at SMEC Consulting where he developed his expertise. In the years since, he has developed a wealth of experience, successfully bringing his considerable creativity and industry knowledge to bear on a diverse range of projects:

  • Industrial warehouses
  • Factory and office buildings
  • Major property developments
  • Multi-storey apartment buildings
  • Mining structures and storage facilities
  • Tunnels
  • RMS and Transport NSW

 Areas of Experience

  • Geotechnical design of linear projects such as railways and motorways
  • Geotechnical investigation and design of tunnels and the monitoring of underground construction
  • Slope stability assessment and remediation

Career Summary

Tim Rannard is an engineering geologist with over 20 years experience, including 14 years in the geotechnical consulting field, mostly at Principal or management levels.  He has worked extensively on major road and railways projects in NSW and Singapore, and road, rail, water and sewer tunnels throughout NSW, often in the role of geotechnical leader. 


Barry Renaud

Senior Railway Engineer




Rail knowledge
Extensive knowledge and understanding of the commercial, technical and operational requirements to deliver a total rail solution for resource railways, metropolitan networks or freight lines.


Project skills
Extensive on-the-job project experience in a modern rail environment with an in-depth understanding of the interfaces required to successfully develop, project manage, operate and maintain a railway.


Safety Commitment
Visibly committed to workplace and operational rail safety to provide the foundation platform for extra-ordinary performance of teams and as a result, companies and their results.


Proven, energetic leader equipped to lead and drive project and operational outcomes in accordance with the company’s strategic direction and deliver on the commitments made.


Team player
Proven team player that provides energy, thrives on a challenge, is focused on delivery, loyal to the employer, with pride in the professional ethical approach to any task.


Proactively challenge existing systems and processes to deliver improved, innovative but practicable solutions for the company, its stakeholders and customers.


Industry profile
High industry profile and extensive network of rail industry contacts.



Willie Osmo (called to higher order) and Paolo Giammarco 

B.Sc.Eng. (Civ Eng) F.I.E. Aust C.P. Eng,  NER Registered

Senior Structural Engineers


Since graduating Willies' career has spanned Australia, as well as the structural engineering spectrum.


In this time, Willie has been the driving engineering force behind a host of high profile projects:

  • Mine site and structures
  • Residential construction
  • Commercial buildings and facilities
  • Industrial sites and structures
  • Marine projects
  • Luxury apartment buildings
  • Pedestrian bridges
  • Shopping centres
  • Temporary works projects

William Osmo graduated from the University of NSW in 1970 as a Civil and Structural Engineer. Have worked several jobs whilst studying, and in 1974 started a Steel fabricating company in Botany.


In 1975  returned to Consulting with various Companies as a Consulting Engineer in Structural, Civil and Remedial. 


Apart from the usual structural designs for residences, block of units, factories and large clubs, he carried out a lot of inspections for many strata managers for problems developing in old blocks of units around the Eastern Suburbs  and beach areas of Sydney.


His expertise  extends to Scaffolding, Design of Formwork Systems, building safety screens, soffeit inspection prior to concrete pours and all temporary works associated with the high rise construction. He also inspects and certify swing stages and design scaffold systems for buildings access . 


On demolition side of construction he has  assisted many demolishers with their methodology, supervise their works and certify the temporary nature of the required supports and overall safety of operation.




Carlo Vimercati

Senior Mechanical  Engineer

Dip. M.E. London, Member AACE International, Member ACES ( Cost Engineers Ass.)


Since graduating,Giancarlo's (Carlo) career has spanned the design and construction spectrum, both locally and internationally, playing a pivotal, often project leadership role on a broad range of projects, from feasibility to completion:

  • Port design and infrastructure
  • Desalination plant engineering
  • Offshore wind farm construction
  • Industrial structures and facilities
  • Onsite structural engineering consultancy
  • Inspections and risk management projects
  • Brownfields analysis, expansion and remediation projects
  • Shopping centres
  • TBM designs and installation
  • Tunnel Engineering

 Giancarlo (Carlo) Vimercati is a hands-on Estimator with over 40 years experience in all facets of the construction industry. He is well versed in estimating, construction, fabrication and installation worldwide.


Carlo has a verifiable track record of success in these areas on multidisciplinary capital-intensive projects through developing and maintaining strategic relationships with clients, service providers, contractors and vendors/suppliers within a strong safety culture.


His areas of expertise are managing estimates; WBS, Classes of Estimates, Procedures Development and Review; Norms, Productivity Factors, Labour Rates, Indirects and Distributables; EPCM/PCM/EPC/LSTK/D&C and Hard Money Contracts services; growth, escalation and contingency (estimate & risk) analysis workshops; team building and leadership; safety awareness; client relationship/ negotiation; contractor/supplier development; and reviews (external and internal).


Carlo’s experience includes delivery of EPCM project estimation on Roxby Down Project (SA) 30 billion, Wandoan Coal Project (QLD) 10 billion, Adani Carmichael Coal Project (QLD) 9 billion, Mt Pleasant (coal mine in NSW) $1.2 billion; delivery of EPCM project estimation on Freida River (copper gold mine in PNG) $4 billion; delivery of EPCM project estimation on Clean Sea Project (upgrade and expansion of waste water treatment plant, Cairns) $175 million; Development Manager role for delivery of contract to Technipetrol / - Technip for Ammonia Plant Wesfarmers CSBP ($100m) to mention some.


He also has experience in project manager role for a diverse range of EPCM/D&C/Hard Money Contracts projects in the mining and oil/gas industries; estimating all facets of major and minor project in power, oil/gas, paper/pulp mills, petrochemical, tunnels, dams, railways, ports, roads, bridges and mines; management of light, medium, heavy workshop with over 350 people, with major project around the world; design, maintenance,




Pat Anthony Ciaglia


Team Hydraulic Design Engineer


MDSc. Building (Building Services)

Civil Engineering Certificate E.A. Member


Patrick has specialised in all facets of Hydraulic Building Services engineering over

the past 35 years within Federal, State and Local Government Departments including the Private Sector in both the State of NSW and ACT.


Collectively he has been able to provide responsible and professional services and has been able to maintain a high level of personal involvement during the life of each project undertaken.


Some of Patrick’s Special Field’s of Competence includes

  • Feasibility Studies
  • Return Design Briefs
  • Preparation of Budget Estimates
  • Tender Assessment and Reports
  • Construction Supervision
  • Contract Management
  • Preparation of Maintenance Contracts and Administration
  • Audit Inspection Reports
  • Technical Design Documentation from initial concept to final handover
  • Site Services Inspection Reports
  • Compliance Certificates