Meet The Team
Matthew Finn
Director | Façade Engineer
Matthew is the director of envelope engineering and has over 14 years’ experience in the façade industry. Before establishing Envelope engineering, he led a team of more than 10 façade engineers at the Arup Sydney office.
Through this experience, he has gained extensive technical understanding for any given complex façade design and project.
Some key projects include the SICEEP development, Quay Quarter Tower, Wynyard Place and Western Sydney Airport.
With a strong engineering design background, Matthew brings significant hands-on experience of detailed façade design obtained through working for Arup, Arcadis and an international façade subcontractor. His wide experience as a façade specialist allows him to deal with all aspects of façade issues from structural design through to buildability, materials election, thermal performance and waterproofing.
0423 229 504
Undram Oyun
Principal Partner | Façade Engineer
Undram is a façade design practitioner with experience across all building types, from Class 2 through Class 9. She is a recognised expert in Class 2 residential projects, with a strong understanding of DBP regulations and compliance requirements.
Her work covers project management, structural calculations, and in-depth condensation and thermal analysis. She also manages material compliance, durability and compatibility checks, and develops effective waterproofing solutions.
Known for her attention to detail and collaborative approach, Undram combines technical precision with practical problem-solving, supporting teams to deliver compliant, high-quality façade outcomes. She has strong technical skills in areas such as structural calculations, condensation management, and material science.
0493 155 244
Tania Milinkovich
Associate | Façade Engineer
Tania previously lead Arup’s façade team in Sydney. She has over 11 years’ experience in consulting and has worked on a vast range of projects both in Australia and internationally during her time in Arup’s London office. Well versed in managing technically challenging projects in diverse and multi-disciplinary teams, Tania consistently delivers high quality design intent that meets performance, environmental, budget and construction criteria.
Drawing upon the skills gained from her unique training in Civil Engineering and Architecture, Tania thrives in collaborative teams working towards a common goal. Her passion for materials, performance and sustainable design is what she brings to projects throughout their lifecycle, from initial design development, through to tender, during construction phase and beyond.
Philip Cho
Façade Engineer
Philip brings a delivery-focused perspective to façade design, drawing on a solid foundation of experience in façade consulting. At envelope-e, he contributes across projects of all building classes, guiding them from initial concept through to completion. His skill set spans structural verification, weatherproofing strategies, thermal-performance studies, and the review of material behaviour and compatibility, allowing him to address both technical and practical demands with confidence.
Through well-considered building envelope and interface solutions, Philip translates complex analysis into clear, buildable details for construction teams. He approaches every project with meticulous attention to detail, strong coordination with architects and builders, and a pragmatic focus on outcomes that are robust, efficient, and enduring.
Michael Bagi
Associate | Façade Engineer
Michael is an Associate Façade Engineer at envelope-e with a broad range of experience across all aspects of façade work. Michael has worked across new build commercial, residential, education, art and sports, and refurbishment of existing and heritage buildings, and all phases of façade works including concept development, performance and prescriptive detailing and engineering, contractor reviews, through to site and factory inspections and performance testing.
Michael has delivered several highly technical designs such as the recently completed Sydney Opera House façade modifications and lift installation for the Joan Sutherland Theatre. Michael was project façade engineer, taking this ambitious project from concept stage through to completion of installation, involving an intensive contractor review and site phase which was paramount to the project’s success.
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MF - 0423 229 504
UO - 0493 155 244