Meet the Leadership Team
Darren Thevathasan
CEO & Co-Founder
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Darren Thevathasan is the CEO and Co-Founder of Thorough Group, where he leads the firm’s vision, growth strategy, and client partnerships across the life sciences industry. Since 2002 he has had a strong track record of building high-performing teams and scaling businesses. Darren brings a consultative, results-driven approach to helping Life Science companies secure critical talent. He leads our Search teams and is deeply committed to long-term partnerships and delivering solutions that directly impact organizational success.
Sean Burroughs
President & Co-Founder
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Sean Burroughs is the President and Co-Founder of Thorough Group, responsible for driving operational excellence and leading client engagement across the organization. Sean leads our contract/consulting teams with extensive experience in life sciences talent solutions and is known for his ability to execute on complex, high-impact searches while building lasting relationships with clients and candidates alike. His leadership ensures every engagement is handled with precision, urgency, and a commitment to quality.
Oliver Tsay
Senior Vice President
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Oliver Tsay is the Senior Vice President at Thorough Group, where he focuses on delivering consulting and talent solutions to biotech and pharmaceutical companies. With a background in supporting high-growth organizations, Oliver brings a strategic mindset to aligning talent with business objectives. He is particularly focused on building scalable consulting engagements and helping clients navigate complex workforce needs with flexibility and speed.
Jeena Thevathasan
Executive Advisor, Clinical Operations
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Jeena Thevathasan serves as an Executive Advisor to Thorough Group, bringing over two decades of experience in clinical operations across the life sciences industry. Her background spans from site-level execution to senior leadership, providing a deep, practical understanding of how clinical teams operate and scale. Jeena plays a key role in advising clients and ensuring talent solutions align with the realities of clinical development and trial execution.
Welcome to Thorough Group – your premier partner for advancing careers in the life sciences sector.
With a distinguished reputation as a premier life sciences recruitment agency, Thorough Group stands at the forefront of the industry, dedicated to connecting seasoned professionals with unparalleled career opportunities. Our expertise lies in facilitating placements across a diverse spectrum of organizations within the pharmaceutical, biotechnology, medical device, and clinical research sectors.
We pride ourselves on our ability to cater to the needs of both established global brands and emerging companies, ensuring that each candidate we work with finds the perfect fit for their unique skill set and career aspirations. Our extensive network and deep understanding of the life sciences landscape enable us to provide tailored recruitment solutions that drive success for both candidates and employers alike.
The Thoroughly Thriving Podcast explores human capital solutions at the crossroads of talent, strategy, and innovation. Hosted by Darren Thevathasan and Sean Burroughs, the podcast offers insights on recruitment trends, business growth, and cutting-edge strategies.
Discover our latest episodes on the following platforms:
APPLE PODCASTS