A specialist global search firm

Established in 2006 and with offices in New York, London, Abu Dhabi and Singapore, One Search is a highly specialized search partner to investors and organisations transforming the world’s energy, resources and infrastructure.

Our Coverage

Sustainable Infrastructure is a truly global sector, with projects and assets being financed and invested in right across the far reaches of the planet.  Our team is diverse and multi-lingual – as is our client base – and we pride ourselves on completing mandates in the most challenging of locations.  We cover five distinct disciplines: Equity Investment, Credit Investment, Investor Relations / Fundraising, ESG leadership and Portfolio Search.

Read more about Our Coverage

A few of our clients

Publications, News and Views


People Moves Report, H2 2023 – EMEA

Who are the notable people moves and promotions in Europe in the second six months of 2023. This in-depth analysis captures all the key moves in Credit, Equity, IR, Legal and ESG.

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People Moves, EMEA H1 2023 – Credit

H1 of 2023 has been an interesting 6 months in the wider economy, which has seen increased interest rates and question marks around the certainty of the economy. Relative to the macroeconomic climate, the Infrastructure Credit market has had a stable start to 2023 with continued hiring across all levels, with the junior end of the market producing the most moves as it does every year.

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What our clients say…

“Over the past 10 years, we’ve had a strong partnership with One Search who helped us attract high-caliber and diverse talents in our investment teams and our investor relations team in Europe, North America and Asia. Their impact has been very significant, and we look forward to continuing this fruitful relationship for our future development plans.”

Melanie Biessy
Senior Partner and Chief Operating Officer
Antin Infrastructure Partners

“As we have built the Edmond de Rothschild AM Infrastructure Debt business since 2014, hiring top, diverse, adaptable and ambitious talent has been the key priority to provide our investors with the best investment portfolios and service.  One Search, led by the visionary Dan McCarthy, has been invaluable in this regard, working as a trusted partner and helping me, starting from scratch, to build a Franchise now consistently in the top 10 globally and growing.”

Jean-Francis Dusch
Global Head of Infrastructure
Edmond de Rothschild Asset Management

“Our partnership with One Search has been extremely fruitful, yielding high caliber talent acquisitions in our investment team, our investor relations/fundraising team and even C-suite placements into our portfolio companies.  We look forward to continuing this relationship long into the future”

Steven Sonnenstein
Senior Managing Director

“We have worked with One Search as our preferred recruitment partners for well over a decade. The team can be relied upon for hard work, dedication and finding great candidates that not just meet our skills requirements, but very importantly fit our culture.”

Niall Mills
Global Head of Infrastructure
First Sentier Investors

“Our partnership with One Search has already yielded five excellent investment professionals across our New York and Houston offices during a period of strategic growth at Orion.  We look forward to working on many more successful assignments with them as we continue to grow at pace.”

Chris Leary
Partner, Head of Infra Equity
Orion Energy Capital

“In our view, the key to a successful partnership with a search firm pivots on that firm’s understanding of the culture and ambition of the specific team. One has clearly made an effort to ensure every candidate reflected who we are.”

Deborah Zurkow
Chief Investment Officer
Allianz Global Investors

“Dan and his team have supported our growth globally over the last five years, hiring numerous managing directors who have moved the needle on our aggressive growth strategy.  It is also notable that One Search has achieved a perfect 50/50 gender balance in its placements at CIBC to date – no mean feat across 32 successful mandates!”

Laurie Mahon
Vice Chair
CIBC Capital Markets

“One Search has continued to deliver top class candidates in order to fuel the growth of our business over several years. Dan and his team are committed to delivering outstanding results backed up by solid market knowledge and a deep understanding of their clients mandate.”

Patrick Trears
Global Head of Infrastructure Debt
AMP Capital Investors

“The One Search team have a long and very successful track record of hiring into our infrastructure investment team. They are exceptionally well connected across the market, listen and understand our needs, and have the ability to identify strong candidates with appropriate skillset and cultural fit.  It’s a pleasure working with them, and we look forward to continue working with them as our business continues to grow.”

Will Devenney
Global Head of Infrastructure
Legal & General Investment Management

“Dan and his team understand the business like you do, their insights on the strategic challenges and opportunities ahead come across as a market insider.  This is not another call from a firm placing equity traders in the morning and compliance officers in the afternoon, they truly have a singular franchise and grip on the infrastructure space. I would recommend One Search to anyone considering a career move or seeking good people to join their teams.”

Jorge Camina
Partner and Head of Sustainable Infrastructure Credit
Denham Capital Management

“Dan and the team have high job integrity, ability and willingness to listen. It is an absolute pleasure to work with them and would highly recommend One Search to anyone who appreciates a personal approach. Thank you, One Search.”

Nadia Nikolova
Lead Portfolio Manager, Development Finance
Allianz Global Investors

“The One Search team are resourceful recruiters who understood our needs quickly. They expedited our search and put highly qualified bankers in front of us. Their extensive network and strong pulse on the market helps distinguish them from other executive search firms we have used in the past. They are our first call for strategic recruiting.”

Mike Pantelogianis & Ralph Cho
Co-Heads of Power & Infrastructure Finance, North America

“I have been very impressed with the high levels of integrity, focus and reliability One Search has demonstrated, and I have no hesitation recommending them wholeheartedly.”

Tim Cable
Global Head of Infrastructure Debt
Vantage Infrastructure

“We selected One Search to help us build out our London office on the basis of their market knowledge and professionalism, and they did not disappoint. Dan and the team understood the brief, quickly developed a strong shortlist of candidates and ensured the interview process ran smoothly, resulting in a successful hire in a short time frame.”

Tim Floyd
Head of European Infrastructure Debt
Westbourne Capital Partners

“One Search clearly display a thorough understanding of the (energy transition) investment industry. Furthermore, they establish long term relationships and follow people throughout their career as they grow, connecting employers and employees in a very effective way. I recommend One Search to anyone recruiting or looking for work in this sector.”

Conrad Phaf
Senior Principal
Renewable Power Capital Ltd

“I have worked with Dan at One Search several times, both as a client and a candidate. I have consistently been impressed by One Search; they know the market exceptionally well and deliver consistently. I would not hesitate to work with them again.”

Emma Haight
Partner, Head of EMEA Infrastructure Debt
AMP Capital Investors

“I have worked with One Search on a number of occasions, both in recruiting new positions, and as a candidate myself. I have found them to be a pleasure to work with and, whichever side of the recruiting process I’ve been on, they have taken the time to understand what I am after from either a new role or recruit. As candidate, I received lots of useful advice and encouragement, and as a recruiter, I have received a strong range of candidates accompanied with honest feedback and appraisals, all of which has helped make the process as streamlined as possible.”

Lisa Shaw
Managing Director, Infrastructure Debt
Vantage Infrastructure