At Sarah, our success is built on the strength, character and capability of our team.
Across every discipline — from pre-construction and project delivery to commercial, digital and operational leadership — our managers bring deep expertise, clear thinking and a commitment to doing things properly.
We believe the best outcomes are achieved through collaboration. Through open communication, through accountability, and through people who genuinely care about the work they deliver and the relationships they build along the way.
About Adrian Esplin
With more than 30 years’ experience in commercial construction and development, Adrian leads Sarah with clarity, conviction and a deep belief in people.
A strategic and values-driven leader, Adrian sets the vision for the business while empowering our teams to bring that vision to life. He is passionate about building capability, fostering safe and high-performing workplaces, and continuously improving how we operate.
Adrian believes strong relationships are the foundation of great outcomes — internally and externally. His leadership reinforces our People First culture and our commitment to delivering lasting impact across South Australia.
Beyond Sarah, Adrian contributes widely to industry and community. He is a Director of Youth Inc, an Adjunct Lecturer at the University of Adelaide’s School of Civil and Environmental Engineering, and Immediate Past SA Division President and National Board Director of the Property Council of Australia.
“At Sarah we value our people and the relationships we build internally with each other. This creates the DNA to build great relationships with everyone we work with – our culture of People First”
About Terry Tsapaliaris
With more than 24 years’ industry experience, Terry oversees operational strategy and ensures our systems, people and projects are aligned for performance.
A big-picture thinker with strong execution capability, Terry works across construction planning, strategic resourcing, design and digital integration to ensure our project teams are supported to deliver at the highest standard.
He plays a key role in strengthening collaboration across HR, QHSE and IT, driving continuous improvement and operational efficiency across the business.
Terry is passionate about innovation and building teams that challenge conventional thinking — helping shape a smarter, more forward-thinking construction industry.
About Salem Tredrea
Salem combines practical construction expertise with strategic leadership to drive performance across Sarah’s Construction and Defence portfolios.
He provides oversight across project delivery, business development and stakeholder relationships — ensuring high-quality outcomes, strong financial performance and consistent delivery standards.
Known for his calm leadership style and clear communication, Salem fosters collaborative project environments that prioritise safety, quality and client satisfaction.
His focus remains firmly on delivering complex projects with precision while positioning the business for sustainable growth.
About Ben Layley
With more than 18 years’ experience delivering major projects across multiple sectors, Ben leads Sarah’s growth strategy and new business function.
Ben supports the business to identify and secure new business opportunities, managing the sales pipeline and overseeing and leading the estimating, marketing and tendering teams to develop award winning bids and proposals.
Ben works closely with the Executive team to strengthen client relationships and identify strategic opportunities that align with Sarah’s long-term direction.
Driven by innovation and market insight, Ben supports initiatives that position Sarah as a trusted, forward-thinking construction partner.
About Jon Anderson
Jon leads Sarah’s Modular portfolio, combining structured problem-solving with a forward-thinking mindset.
With over 18 years’ experience delivering complex projects, Jon brings clarity to multifaceted challenges and ensures modular and engineered solutions are delivered with precision and efficiency.
He oversees project delivery, business development and stakeholder relationships within the portfolio, while fostering a culture where innovation is encouraged and new thinking is supported.
Jon plays a key role in expanding Sarah’s capabilities in modular and off-site construction.
About Dena English
Dena leads Sarah’s Quality, Health, Safety, Environment and Sustainability function, embedding a culture of accountability and continuous improvement across the business.
With an engineering background and ongoing legal studies, Dena translates complex regulatory requirements into practical, workable systems that support safe, efficient project delivery.
She is committed to strengthening female participation within construction and safety and actively mentors women entering the industry.
Dena serves as Deputy Chairperson of the South Australian Construction Safety Alliance (SACSA), is a Master Builders SA HiViz member and an active NAWIC member.
About Lewis Skittrall
Lewis brings international commercial experience to Sarah, leading strategic commercial and operational performance across the business.
With a disciplined and analytical approach, he strengthens financial governance, contract administration and business process improvement to enhance project outcomes.
A Fellow of the Royal Institution of Chartered Surveyors, Lewis also contributes to the professional development of future project managers and contract administrators through his industry involvement.
His leadership ensures commercial integrity remains central to Sarah’s project delivery.
About Marek Mikucki
With more than 18 years’ experience, Marek leads Sarah’s estimating function with precision and strategic insight.
Drawing on strong relationships across the subcontractor and supplier network, he ensures competitive, well-considered tenders that reflect buildability, value and risk awareness.
Marek mentors emerging estimators within the team, supporting the development of technical excellence and professional standards that align with Sarah’s expectations.
About Rob Maiolo
Rob brings 16 years’ construction experience and a practical, people-focused leadership style to his role.
He prioritises open communication, fairness and accountability — ensuring project teams feel supported, empowered and clear on expectations.
Rob is passionate about developing future leaders within the business and invests time mentoring younger staff to strengthen capability across the industry.
About Amanda Del Rosario
Amanda is an experienced QHSE leader with a strong engineering background and a methodical, systems-driven approach.
She plays a key role in strengthening Sarah’s Information Management Systems and ensuring compliance, reporting and operational standards are upheld across projects.
Amanda collaborates closely with executives, project teams and regulators to drive continuous improvement and foster safe, high-performing environments.
Her focus remains on quality outcomes, process efficiency and building a culture of shared responsibility.
About Evan Kellaris
Evan specialises in complex fit-out delivery, combining more than 20 years’ experience with a strong understanding of design intent and client needs.
He anticipates risks early, identifies practical solutions and builds strong relationships across project teams to ensure seamless execution.
A committed member of Sarah’s RAP Committee, Evan actively supports engagement with Aboriginal and Torres Strait Islander businesses and communities, strengthening partnerships and creating meaningful industry opportunities.
About Luke Ferme
Luke combines over 10 years of construction experience with a practical, structured and solutions-focused approach to project delivery.
Known for his methodical planning and clear communication style, Luke proactively identifies potential challenges early and works collaboratively with his teams to implement effective, considered solutions.
His detail-oriented mindset ensures procedural requirements are translated seamlessly from planning through to on-site delivery.
He is also an active contributor to Sarah’s RAP initiatives, supporting the onboarding of Indigenous subcontractors and strengthening meaningful partnerships within the communities we work in.
About Sean Aplin
With more than 30 years’ experience, Sean provides strategic programming and methodology expertise across tender and delivery phases.
He works closely with clients and project teams to ensure buildability is considered early, mitigating risk and strengthening project certainty.
Sean is passionate about mentoring emerging professionals, sharing his knowledge to accelerate capability development within the business.
About Danielle Oerman
With over 12 years’ experience in interior architecture, Danielle brings a collaborative and considered approach to every project.
She works closely with clients and stakeholders to clearly understand the brief — translating vision into well-resolved architectural documentation and buildable outcomes. Through open communication and practical guidance, Danielle ensures all parties feel informed and aligned throughout the project journey.
Passionate about the impact of space on people, Danielle champions thoughtful design that enhances the end-user experience — particularly within education environments, where the built form plays a powerful role in shaping learning, wellbeing and engagement.
About Michael Kilmartin
Michael brings over 35 years’ experience and a practical, sustainability-focused design philosophy.
A Green Star Accredited Professional and member of the Property Council’s Planning & Design Committee, he advocates for improved planning systems and better built outcomes.
Michael balances creativity with buildability, ensuring projects are both visionary and commercially sound.
About Bel Green
With over 15 years’ experience in marketing and client relations within the construction industry, Bel leads Sarah’s marketing, brand and engagement strategy.
She connects brand, business and people — driving external communications, strengthening client relationships and enhancing internal engagement across the organisation. Working closely with the Leadership Team, Bel ensures Sarah’s messaging, culture and market presence are aligned and purposeful.
A natural collaborator, Bel plays an active role beyond marketing. She is a member of Sarah’s RAP Working Group and contributes to the internal HSE Forum, supporting initiatives that strengthen culture, inclusion and safety across the business.
Bel also contributes to the broader industry as a member of the NAWIC Major Events Committee, supporting programs that promote and celebrate women in construction.
About Charles Totani
Charles leads Sarah’s people strategy with a calm, strategic and relationship-focused approach.
With experience across multiple industries, he aligns workforce planning, performance development and culture initiatives with broader organisational goals.
Charles works closely with leadership and teams to foster a positive, high-performing workplace that supports retention, engagement and long-term growth.
About Alex Willshire
Alex leads Sarah’s digital and innovation strategy, leveraging over 11 years’ industry experience to improve workflow efficiency and project transparency.
An expert in 3D modelling, digital auditing and construction technology, Alex works proactively to enhance quality control and long-term project performance.
He collaborates with industry partners, including UniSA, to drive innovation in areas such as augmented reality, defect detection and construction waste reduction.
About Claire Dunstall
With 25 years’ experience in the construction industry, Claire leads the end-to-end management of Sarah’s tender submissions with precision and strategic insight.
Holding a Bachelor of Interior Architecture and a Cert IV in Work Health & Safety, she coordinates complex tender processes — shaping response strategies, aligning technical inputs and delivering cohesive, compelling submissions that reflect the strength of the Sarah team.
Claire thrives on collaboration within the New Business Team and takes pride in seeing successful tenders evolve into projects that deliver meaningful outcomes for clients and communities.
Known for her organisation, clear communication and positive approach, Claire brings professionalism and energy to every submission she leads.


















