Callista Harris

Callista was admitted as a lawyer in 2012 and called to the Bar in 2023.

Before being called to the Bar, Callista practised at Freshfields Bruckhaus Deringer, in Paris, London and Singapore. She was also an associate to the Honourable Justice Susan Kiefel AC at the High Court of Australia and research associate to Professor James Crawford AC SC.

Callista accepts briefs in all areas of law. She has particular expertise in international commercial arbitration, investment arbitration and public international law. She has acted as counsel in international commercial arbitrations under a range of arbitral rules, including the UNCITRAL and ICC Rules, and in investment arbitrations, including before ICSID tribunals. Callista also has experience in proceedings before the International Court of Justice, the International Tribunal for the Law of the Sea, UNCLOS Annex VII tribunals and the European Court of Human Rights.

Callista holds a PhD in law from the University of Sydney and a Master of Law (First Class Honours) from the University of Cambridge.

Stephen Puttick

Stephen has a broad commercial and public law practice.


Stephen has published almost 30 chapters, articles, and notes in legal books and journals on various subjects, including diversity in legal education and the profession. He is the co-editor of Current Issues in Competition Law: Context and Interpretation (The Federation Press, 2021) and Current Issues in Competition Law: Practice and Perspectives (The Federation Press, 2021).


Prior to coming to the Bar, Stephen was the Researcher to the Equity Division of the Supreme Court of New South Wales for Justice J K Ward, now President of the New South Wales Court of Appeal, and was a solicitor at Clayton Utz.


Stephen is a Reporter for the Commonwealth Law Reports, and previously for the New South Wales Law Reports and the Federal Law Reports. He has held various sessional academic positions and remains an Adjunct Research Fellow at The University of Western Australia.


Outside of practice, Stephen is completing his doctorate at the University of Sydney. His thesis re-evaluates the principles of equitable estoppel.


William Marshall

William accepts briefs in all areas of civil and commercial law, with a specialism in major infrastructure and construction disputes.

Prior to being called to the bar, William was a Partner in the Construction Advisory and Disputes team at Pinsent Masons in Sydney.  As a Partner, William regularly provided strategic advice on major infrastructure and construction projects and disputes, and has appeared in NSW courts, in expert determinations, arbitrations, mediations and before Dispute Advisory Boards.

William has also worked as a solicitor and advocate in the Middle East and was a registered lawyer with the Dubai Legal Affairs Department.  He has advised on, and appeared in, major international arbitrations in numerous jurisdictions under the ICC Rules, the ADCCAC Rules, the DIAC Rules, and in ad hoc arbitrations under the Singapore Arbitration Act and the UNCITRAL Rules.

William holds a Masters in Construction Law from the University of Melbourne (Hons 1 equivalent), as well as a Bachelor of Laws and Bachelor of Media from Macquarie University.  William earned academic prizes at both undergraduate and postgraduate level.   William has also studied the Harvard model of negotiation at Harvard Law School.

William is currently studying for his LLM at the University of Melbourne.

William was recognised by Doyle’s Guide as a Leading Construction and Infrastructure Litigation Lawyer in 2019 and 2020, and as a leading barrister from 2021: Leading Construction & Infrastructure Junior Counsel – New South Wales, 2023

Most recently William was included in the inaugural Best Lawyers: Ones to Watch in Australia 2024 for Construction/Infrastructure law

Michael Lyons

While Michael accepts briefs in all areas of commercial litigation, he has developed particular expertise in complex, lengthy and high-value commercial, construction and resource disputes.
Legal 500 Asia-Pacific guide 2023 ranks Michael as a Band 2 leading junior for Construction, Infrastructure & Property noting that Michael is ‘Very good in large, technically complex cases. Able to absorb large amounts of information and determine the key points for cross-examination.
Michael has also ranked as one of the leading junior counsel in Queensland in both commercial litigation and construction disputes, and as one of the leading junior counsel in Australia in construction disputes.

Rohit Sud

Rohit accepts briefs in all areas of law.

Before being called to the bar, Rohit was an Associate at Minter Ellison in Sydney, where he worked on a wide range of matters including representative proceedings, insurance law disputes and commercial litigation.

Rohit holds a Bachelor of Laws (Hons) and a Bachelor of Commerce (Distinction) from the University of New South Wales and a Master of Laws (Hons 1 equivalent) from Columbia University Law School.

Rohit was previously the Associate to Justice Gleeson in the Federal Court of Australia.

Jonathan Adamopoulos

Jonathan was called to the bar in 2018 and accepts briefs in all areas of law. He has particular expertise in intellectual property, building and construction, employment and safety, and commercial and corporate disputes.

Prior to being called to the bar, Jonathan was a senior associate at Allens, where he maintained a diverse litigious and advisory practice. He also acted for clients in response to regulatory investigations and prosecutions. He has acted for and advised government departments and private sector clients in a variety of industries and sectors including financial services, telecommunications, pharmaceutical, transport, property investment and FMCG.
Jonathan is a sessional lecturer in law at Western Sydney University where he lectures in civil procedure and arbitration, and work health and safety law. He is also an adjunct lecturer in advocacy at the College of Law. Jonathan is a co-author of Zuckerman on Australian Civil Procedure, one of the leading texts on civil litigation, and a contributor to National Work Health and Safety Law. He is also a headnoter for the Intellectual Property Reports.

Jonathan was again recognised as a recommended junior in Doyles Guide’s latest Leading New South Wales Construction & Infrastructure Junior Counsel – New South Wales, 2023.

Rhea Thrift

Rhea accepts briefs in all areas of law.

Prior to coming to the Bar, Rhea worked as a solicitor at King & Wood Mallesons. As a solicitor, Rhea worked on a wide range of commercial matters, specialising in insolvency litigation. She has acted for insolvency practitioners, public companies and government clients.

Rhea has a Bachelor of Civil Law with Distinction from the University of Oxford.

Rhea was previously a Tipstaff in the New South Wales Court of Appeal.

Mark Sheldon

Mark specialises in major construction and engineering matters, including large infrastructure projects and mining disputes. He is also regularly briefed in large-scale, complex commercial and property matters.  He regularly appears unled for a diverse range of clients comprising top-tier Australian and international construction contractors, sub-contractors, multi-national corporations, overseas mining operators, local councils, certifiers, developers and strata owners.

Mark has increasingly been selected as Counsel of choice in commercial matters that arise from, or relate to, construction or engineering. In such matters, Mark is often relied upon to manage parts of the case where his technical expertise is sought, and he takes an active role as advocate in those parts of the case.

Mark’s experience extends beyond the court room to domestic and multi-million-dollar international arbitrations in the Asia-Pacific region. Complementing his litigation practice, Mark has considerable experience helping clients to achieve pragmatic and commercial solutions by way of expert determination, adjudication and mediation.

Mark has a strong reputation for applying a strategic, practical and commercial approach to resolving disputes. He enjoys working collaboratively with teams of lawyers and experts to analyse, distill and resolve complex legal issues and is valued for his approachability, thorough preparation and strong work ethic.

Mark has been consistently recognised in several legal directories, including, The Legal 500 Asia-Pacific, Doyles Guide and Who’s Who Legal for his expertise in the field of construction and infrastructure.

Prior to being called to the Bar in 2015, Mark practised as a solicitor at Corrs Chambers Westgarth and Arnold Bloch Leibler and before that was Tipstaff to the Honourable Justice Einstein in the Supreme Court of New South Wales (Commercial and Technology and Construction Lists). While at Corrs, Mark was seconded to the Australian Centre for International Commercial Arbitration (ACICA) to assist in the drafting of the ACICA Arbitration Rules.

Mark holds a Bachelor of Laws with Honours and a Bachelor of Commerce with Distinction from the University of New South Wales. Previously, he was a headnote author for the New South Wales Law Reports and co-authored the catchwords for Domestic Commercial Arbitration for the New South Wales Law Reports.


Nuala Simpson

Nuala accepts briefs in all areas of commercial law, but has special expertise in representative (class-action) proceedings and complex, high–value engineering and construction disputes.

She regularly appears in the Federal Court of Australia, Court of Appeal New South Wales, the Supreme Court of New South Wales and in private arbitrations and in mediations.

Nuala is also a Fellow of the Australian Centre for International Commercial Arbitration.

Chambers & Partners ranks Nuala in the Asia Pacific Guide, Construction & Infrastructure – Band 1, as “a very highly regarded junior” who regularly appears on complex construction and engineering cases with clients describing her as “excellent” and “a very bright and very thorough lawyer” (Chambers & Partners Asia Pacific, 2022-2020).

She is recognised as one of Australia’s best lawyers in the areas of “Construction and Infrastructure” (Best Lawyers Australia, 2022 – 2013) “Litigation” (Best Lawyers Australia, 2022 – 2016) International Arbitration (Best Lawyers Australia 2022), Leading Arbitration Barrister – Australia (Doyles Guide 2023) and also rated as “preeminent” in the area of “Construction Law” in Australia (Doyles Guide, 2023 – 2016).

Who’s Who Legal’s latest Construction 2021 – Future Leaders – Legal Marketplace Analysis, reports that Nuala is highly thought of as the “best junior” in the market, known for being “formidable at cross examination”.

Most recently, Nuala was listed as a Leading Junior in Legal 500 – Asia Pacific
Nuala is sharp, agile and immensely hard-working. Her construction law expertise, including in complex issues of delay, disruption and quantum, is market-leading. A fantastic team player and a genuine pleasure to work with. A very diligent and clever junior counsel. Works very hard and is very responsive.


The Legal 500 - The Clients Guide to Law Firms 

Eli Ball

Eli accepts briefs in all areas of civil and commercial law.

Eli regularly advises and appears (both led and unled) in matters before the Supreme Court of NSW and the Federal Court of Australia, as well as lower courts and tribunals. His practice includes general and commercial equity, corporations, class actions, building and construction, insolvency, insurance, professional liability, property, and probate.

Prior to coming to the bar, Eli was a solicitor in the disputes team at Ashurst in Sydney.  He was also previously Tipstaff to the Honourable Justice David Ipp AO at the New South Wales Court of Appeal.

Eli has a Doctorate in Law from the University of Oxford, where he focussed on the laws of restitution, unjust enrichment, equity, trusts, and tracing.  His doctoral thesis, Enrichment at the Claimant’s Expense: Attribution Rules in Unjust Enrichment was published as a book in 2016.  While at Oxford, Eli also completed the Bachelor of Civil Law and Master of Philosophy in Law, and was a college lecturer in contract, equity and trusts, and tort.

Eli was recently listed as a leading junior in The Legal 500 2023 Asia-Pacific Guide for Construction, Infrastructure and Property and as a leading junior in Commercial Disputes
Feedback including: ‘Eli is very quick at absorbing his brief and material and then identifying the issues and strategy. He is very responsive and economic with his advice and preparation work. ‘ and ‘His written advocacy is concise, structured, persuasive, impeccably researched, and trusted.

Away from the law, Eli is an accomplished marathon butterfly swimmer.  He is the record-holder for butterflying the Rottnest Channel (19.7km) in Western Australia.

The Legal 500 - The Clients Guide to Law Firms