OUR TEAM

AN EXTRAORDINARY TEAM OF TALENT

Tom Barnes

Chairman

James Brocket

Managing Partner, London

Diane McIntyre

Managing Partner, New York

Dan Grosh

Partner, San Francisco

Ed Montoya

Partner, San Francisco

David Schumer

Partner, New York

Aanand Varanasi

Partner, San Jose

Thomas Green

Partner, London

Venesa Klein

Partner, Los Angeles

Tom Crawford

Partner, San Jose

Hannah Joyce

Partner, London

Anthony Cenzano

Partner, New York

Amanda Grant

Partner, New York

David Madden

Partner, San Jose

Ryan Polich

Partner, Milwaukee/Chicago

David O’Toole

Partner, London

Mark S. Frank

Vice President, Stamford

Debbie Lorell

Principal, San Francisco

Antonia Halliday

Principal, London

Kristie Audiat

Associate, San Francisco

Tora Squire

Senior Associate, London

Justine Navarrette

Associate, New York

Jonathan Schwebel

Associate, New York

Vaiva Uryzaj

Senior Associate, London

Eloise Howells

Senior Associate, London

Nicole McDougal

Associate, San Francisco

Niklas Cedenheim

Senior Associate, London

Reese Gibson

Associate, New York

Suzanne Cranshaw

Head of Finance & Operations, London

Sherri Cervelli

Vice President, Human Resources and Operations, San Francisco

Barbora Valkova

Executive Assistant/HR & Operations Manager, London

Adriana Cholico

Executive Assistant, San Jose

Melissa Smith

Executive Assistant, New York

Mabel Tong

Executive Assistant, San Francisco

Rachel Gundry

Accountant, London

Gabby Williams

Executive Assistant, London

Katie Nelson

Accounting, San Francisco

Jillian Heisler

Accounting, San Francisco

Tom Barnes

Tom is one of the two founding partners of Calibre One and is based in both San Francisco & London. He is responsible for ensuring that the founding principles of the business govern our activities and that our reputation continues to remain at the forefront of our industry. Prior to founding in 2000, Tom was head of practice for a major, international executive search firm. During his seven year tenure at that business, Tom always pushed for innovation, accountability and results and was a central figure in growing the company from 40 people to 850 by the time he left. Recruiting at the senior level since 1994, Tom has devoted all of that time to the acquisition of senior human capital for the internet technology and media industries with his focus exclusively on board positions, CEOs and their direct reports.

e: tom.barnes@calibreone.com
t: 415-794-9952

James Brocket

James is a co-Founder and Managing Partner of Calibre One and co-leads the firm's activities in the EMEA region, based out of London.

With over 20 years of experience, his major focus has been on recruiting at Board, and C-level for businesses headquartered in Europe. He works closely with the private equity community and is a trusted advisor to a number of funds. He has also managed a vast number of leadership assignments for US companies across the EMEA region.

James holds a degree in Biological Sciences. Outside of work he is an active angel investor in tech companies, a parent to twin boys and an avid sports enthusiast (anything, but especially golf and rugby).

e: james.brocket@calibreone.com
t: +44 207 070 3019

Diane McIntyre

Diane McIntyre leads C1's North American Operations and has been helping grow industry leading businesses through executive search for over 20 years. She brings to Calibre One a proven track record of recruiting CxO’s and VP’s for some of the most influential investors and entrepreneurs, as well as market-leading growth companies across the Technology industry. Before Calibre One, Diane worked as a partner for three boutique executive search firms conducting C-level and VP-level assignments for Enterprise Software, Consumer Internet, and Digital Health. Early in her career, Diane was a Principal and then Managing Director at Ramsey Beirne Associates, one of the leading technology recruiting firms in the world. Searches that Diane conducted helped to launch or bring to prominence some of today’s best-known companies in the Internet and software sector, including eBay, E-Trade, Netscape, Dell, Microsoft and WebMD. Over the last 20 years, Diane McIntyre has overseen numerous searches for the role of CEO, CMO, CRO, and VPacross all functional disciplines. Diane lives in NY with her husband and children. She is high-energy and enthusiastic about exercise, music as a singer/pianist, and about anything health related.

e: diane.mcintyre@calibreone.com
t: +1 (212) 228-1244

Dan Grosh

With over two decades of executive search experience, clients and industry executives frequently leverage Dan’s perspective by seeking his advice on strategy as well as Board and company leadership selection. He has built numerous senior management teams, placing Board Members, CEO's & CXO's into public and private sector technology & services companies. Dan has played a significant role at Calibre One. He served on the global operating committee with responsibility for management, vitality and scale of the US Operations, while driving record revenue growth during his tenure. Previously, Dan was the Technology Practice Leader - Americas Region for Boyden, one of the largest retained executive search firms in the world. Dan is also an Operating Partner at Diversis Capital where focuses on talent strategy, enhancing leadership teams and special projects for Diversis and the firm’s portfolio. Dan holds an MBA from Golden Gate University and a BA in Communications from the University of Minnesota.

e: dan.grosh@calibreone.com
t: 1 (415) 722 2964

Ed Montoya

Ed Montoya brings two decades of experience advising Founders, CEO's, Board Members, and senior leaders on their most important leadership and recruitment initiatives. Ed leads Calibre One's Global Financial Officer Practice and has recruited over 100 senior finance leaders across the spectrum of public and private companies, ranging from emerging growth to Fortune 100.

He takes an inclusive approach to executive recruitment and is proud to have helped clients increase the number of women and people of color in senior executive positions across high technology, healthcare and financial services. Recent clients and past placements include the CFO’s of Cisco, Nvidia, Roku, Pinterest, Carbon, AVG, Apartment List, Seattle Genetics, AAA, Norwest Venture Partners and other category defining leaders.

Prior to joining Calibre One Ed was a core leader of Spencer Stuart's Financial Officer Practice in Silicon Valley/San Francisco. Ed developed his passion for the Financial Officer function early in his career as a technology and financial services investment banker at Morgan Stanley and M&A professional for publicly traded Affiliated Managers Group.

Ed earned an MBA from the UCLA Anderson School of Management and graduated from U.C. Berkeley with high distinction in Economics.

e: ed.montoya@calibreone.com
t: 1-415-290-9572

David Schumer

David brings a diverse, hands on perspective to executive search based on a successful career as an investment banker, investor, and search consultant. It is from these experiences that he can offer a truly unique consultative view and bring a depth of technical understanding to the market. He brings to Calibre One a proven track record of recruiting investment professionals, sales executives, and c-level leaders in the asset and wealth management industry. Before Calibre One, David worked as a principal for a boutique executive search firm focused exclusively on asset and wealth management. Previously, he was a senior equity analyst and portfolio manager at Tribe Capital Management and at HBK. David began his career as an investment banker at Lehman Brothers. David lives in New York with his wife, two children, and their dog, Rocky.

e: david.schumer@calibreone.com
t: (212) 729-3634

Aanand Varanasi

Aanand has been helping industry-leading icons in technology grow and build for more than 20 years. He has been practicing from Silicon Valley but filling key roles in key locations all over the world. Aanand leads assignments across the software, internet, and technology sectors. Starting his career in executive search working for a Korn Ferry acquisition, Aanand brings an inside perspective to executive search. He spent 14 years as the head of HR and head of Talent for corporations including Medallia, Palm, Palantir, and VMware. Early at VMware in 2002, Aanand was responsible for finding leaders across all functions and locations, organically growing the teams from 150 people, through a successful acquisition by EMC, then IPO, to more than 13,000 in headcount globally and $3B+ in revenue in 2009. Aanand is a programmer and techy since high school, and at Calibre One today, he leads our practice for enterprise technical leadership with an adept understanding of the tech stacks, data sciences, and Dev best practices. Aanand spent his undergraduate education studying Biology at the University of California San Diego and is currently studying business at Notre Dame de Namur University.

e: aanand.varanasi@calibreone.com
t: 1 650 251 4923

Thomas Green

Thomas has over 15 years' experience in the executive search industry, most recently leading the Digital Technology Practice of a top tier search firm. Prior to Calibre One he enjoyed a six year tenure with Korn/Ferry, gaining promotion to Client Partner within the Technology Practice whilst focusing on the convergence space. During his earlier career in executive search Thomas worked, inhouse, at a leading venture capital firm, helping build out the management teams of the company’s portfolio investments. Having graduated as an engineer from Sheffield Hallam University, Thomas began his career in product development and research working for a FTSE listed electronics and engineering company. In his spare time, Thomas is the proud father to two daughters and enjoys attending live music events!

e: thomas.green@calibreone.com
t: +44 (0) 207 070 3027

Venesa Klein

Since 2007, Venesa Klein has helped some of the world’s most successful companies build out the critical leadership teams that drive their success.

As Partner at Calibre One, she successfully places executive leaders across a wide range of technology, new media and software sectors. Klein also heads up the company’s Purpose-Driven Practice, which focuses on placing senior-level executives in growing organizations seeking to create innovation with meaningful impact. This includes companies that focus on empowering employees and/or making positive social impact such as benefit corporations, B-Corps, L3Cs and other purpose-driven companies as well as investment companies focused on this emerging sector.

Prior to joining Calibre One, Klein was the senior recruiter at MarketTools, a market research and technology company. She was responsible for full-cycle, international, executive recruiting across the company. Klein was first introduced to corporate recruiting as a consultant at Google where she was recruited to build out their internal executive search function. She began her executive search career at The Pacific Firm, a premier San Francisco Bay Area boutique firm. Her practice concentrated on the recruitment of executives for venture capital funded start-ups and established high-growth companies in consumer branded goods, retail, consumer and business technology.

Klein is an outdoor enthusiast and spends as much time as possible with her young son while exploring. She is an active supporter of a number of animal welfare and environmental causes.

e: venesa.klein@calibreone.com
t: + 1 (310) 878-7019

Tom Crawford

Tom has been an executive search partner to technology companies big and small for 15 years. In addition to having participated in hundreds of senior-level executive placements, including CEO, CIO, CTO and VP-level roles, clients and industry executives have sought out Tom’s counsel and expertise on a number of growth related topics including executive assessment, incentive compensation, change management and leadership development.   Prior to Calibre One, Tom was a founding partner at a leading Silicon Valley boutique executive search firm where his firm focused on C-level and VP-level retained search assignments in technology companies falling into the consumer, mobile, digital media, healthcare, financial services, and software industry sectors.   Tom’s career in executive search was preceded by 10+ years of operational experience in high-growth, venture backed startups and he was an early, central figure in the bringing to market of multiple technology innovations. His efforts were instrumental in delivering to consumers the first web-based and mobile email products as well as ground-breaking anti-spam and anti-phishing SaaS solutions to the enterprise. Tom participated in multiple funding events and successful exits, including three startup acquisitions totaling over $200 Million prior to his joining XOOM.com, which went public after only 2 years and $10 million raised. XOOM’s IPO in combination with a $250 Million secondary offering resulted in 30x returns to investors and led to the company's acquisition by General Electric (NBC).   Tom studied Political Science at the University of California at Davis where he also worked part-time at the UC Davis Career Center helping graduating seniors polish their resumes and interview skills. Tom was born and raised in California and resides in the Bay Area with his wife and two children where they enjoy skiing, golf, hiking in the Sierras, and fundraising for their local schools.

e: tom.crawford@calibreone.com
t: +1 (650) 251 4920

Hannah Joyce

Hannah is a Partner at Calibre One based in London and brings over a decade of experience in executive search specializing in the appointment of Chair, CEO and top-level Executives in a range of public and private companies. Her expertise is focused on digital, marketing, commercial leadership and digital transformation searches and she supports plc’s and venture capital and private equity investors in identifying and attracting world class leaders in strategy, growth, restructuring and turnaround scenarios. She has also assisted many European based businesses to expand internationally and many US based companies in their market entry strategies into Europe. Prior to Calibre One, Hannah led the Internet and Digital Transformation practice for Odgers Berndtson and more recently she was part of the Global Technology & Consumer practice at Heidrick & Struggles. Hannah holds a BSc Honours in Biomedical Sciences from The University of Leeds. In her personal life, Hannah is an experienced mindfulness mentor and a keen sportswoman with a passion for the outdoor life, particularly kite-surfing.

e: hannah.joyce@calibreone.com
t: +44 (0)20 7070 3024

Anthony Cenzano

Anthony brings more than seven years experience in retained executive search to Calibre One. He has spent all of this time partnering closely with entrepreneurs, management teams, and investors to help build exceptional management teams. He has made VP & C-level placements for some of the largest and fastest growing internet companies of this generation, including AirBnB, Machine Zone, and Zynga. Anthony focuses on executive searches in Product Development (VPE, CTO, VP Product) and Operations (COO, CFO).   Prior to Calibre One he spent time at Daversa Partners and Riviera Partners, two of the leading Retained Search for privately-held internet and technology startups in the US.   When he is not connecting the top 1% of talent with exceptional companies; Anthony spends his time surfing, seeing live music, and traveling as much as possible. Anthony lives in New York City with his wife, Lindsey.      

e: anthony.cenzano@calibreone.com
t: +1 (732) 236-4244

Amanda Grant

Amanda’s executive search expertise harnesses a unique combination of search experience, asset management, and distribution leadership. As a search consultant with tactical and strategic business management experience, Amanda understands the challenges and opportunities of asset management firms and brings a breadth of perspective and innovation to her client partnerships.

Amanda brings to Calibre One a distinguished track record of recruiting distribution and investment professionals in asset and wealth management. She frequently advises asset management leaders on all aspects of their domestic and global distribution structures, strategy, and talent needs.

Prior to Calibre One, Amanda was a managing partner for a boutique executive search firm dedicated to distribution and investment search in asset and wealth management. Previously, Amanda was the global head of institutional client service and a member of the operating committee at Columbia Management. Before that, Amanda was the head of the institutional client service and member of the executive committee at Babson Capital Management. Amanda’s earlier career included an institutional leadership role at Oppenheimer Capital and a position as head of the institutional service for Mitchell Hutchins Asset Management. Amanda was the co-founder of Curant Associates, a management consulting boutique dedicated to distribution consulting in asset and wealth management. She is also the founder of USAdopt, the first national US adoption consultancy.

Amanda graduated from Pace University with BA in English Literature and Marketing, and from Hunter College – CUNY with an MA in English Literature. She is an advocate for children without families and professional women, a Latin dancer, and lives in New Jersey with her son and their cats and dog.

e: amanda.grant@calibreone.com
t: (212) 393-4762

David Madden

David is one of the search industries leading technology recruiters, known for his tenacity and relentlessness in pursuit of finding the right candidate(s) for his clients. David is passionate about client service and spends significant time educating himself on his client’s business, management team, unique culture, and competitive landscape, helping to drive profitable growth and improve overall company performance.

David’s primary focus is General Management and Go To Market (Sales & Marketing) roles, reporting directly to the CEO (or Board of Directors) within the technology market place. He has specific expertise in Enterprise Software, Big Data & Analytics, Artificial Intelligence, and FinTech. At Calibre One, he partners with Board of Directors, CEO’s and their management teams of growth-stage technology companies both public and privately held, ranging in size from working with founders and ventures investors on new business concepts to helping provide the leadership and gravitas necessary to attract senior executives to private equity-owned companies. A few notable clients include Adaptive Insights, Automation Anywhere, Avetta, Forcepoint, JDA, MariaDB, Mercury Payment Systems, and QuanticMind.

Born and raised in Silicon Valley with 20 plus years of work experience, David’s deep-rooted network dates back to his childhood. Having enjoyed the beautiful topography growing up, he is an avid outdoor enthusiast whose hobbies include skiing, hiking, golf, tennis and running. He is a graduate of Tulane University and lives in Los Gatos, CA with his wife and three sons.

e: David.Madden@calibreone.com
t: +1 (415) 577-5477

Ryan Polich

Ryan leads executive searches for public companies and investor-backed businesses in technology, industrial, and healthcare segments. Ryan works closely with his clients to deliver high quality insights, authentic representation, and a candidate experience that gives his clients the edge in recruiting the best technology leaders with enduring impact.

Based in the Milwaukee/Chicago area after years in San Francisco, Ryan focuses on executive searches for C-level executives and their direct reports in product, engineering, and sales. Along with a robust portfolio in enterprise SaaS and life sciences, he spearheads Calibre One’s efforts in Internet-of-things (IoT) and industrial technology, including searches for drones, autonomous vehicles, and oil & gas digital transformation.

He began his career in executive search with the International Technology Practice at Heidrick & Struggles International, then went on to join a boutique search firm specialized in lobbying/public affairs and another as Partner focused on senior technology searches. Ryan earned a master’s degree in International Relations from the University of Wisconsin-Madison and a bachelor’s degree with honors in International Political Economy from the University of Puget Sound near Seattle.

e: Ryan.Polich@calibreone.com
t: +1 (312) 482-8662

David O’Toole

David is a Partner based in our London office and brings 17 years of executive search experience, specializing in board and senior executive appointments for fast growth technology and professional services organisations. David focuses on board and executive roles in cyber, defence prime, A.I, SaaS, systems integrators, professional services, and management consulting firms. He has a particular  specialism in security and automation and works extensively supporting organisations undergoing digital transformation.

Prior to joining Calibre One David was Client Partner for Digital Technology & Commerce at a specialist search boutique and spent four years as Practice Director of Technology and Professional Services at Harvey Nash. He holds a BA in Business Management from Staffordshire University.

In his personal life, David is associated with a number of charities promoting equal opportunity and social mobility. He  also spends time at the theatre, climbing with friends, training and enjoying all Richmond has to offer.

e: david.otoole@calibreone.com
t: +44 20 7070 3013

Mark S. Frank

Mark is a globally focused retained executive search professional who leads searches across all major functional areas at the CxO and VP levels. With over a decade in the industry, Mark has worked with companies of all sizes, from pre-revenue startups to the Fortune 100 to solve their most pressing leadership challenges. Having successfully completed searches for private, including private equity and venture capital backed, and public companies in and from the Americas, Europe, and Asia, Mark is able to evaluate the leadership, cultural, and technical needs of a client and quickly identify the best executives for his client.

Prior to joining Calibre One, Mark was with Allegis Partners, the retained executive search firm owned by the Allegis Group. While with Allegis Partners, Mark led internal recruiting during a period of rapid growth while serving a variety of clients. Before Allegis Partners, Mark worked at CTPartners, where he was an Associate in the Global Professional Services Practice and worked with the world’s premier consulting and business services firms. Prior to entering search, Mark held positions on Capitol Hill and with Maxjet Airways, a startup airline.

Mark graduated from The George Washington University with a degree in International Affairs and Spanish. Mark is an avid traveler and has visited five continents and lived in Madrid, Spain and San Jose, Costa Rica. A leader in his community, Mark sits on the Board of Directors for Jewish Family Service of Stamford and is the Vice President of an organization affiliated with GWU. Mark and his wife, an educator, live in Stamford, CT and are always planning their next trip. Mark is based in Calibre One’s Stamford office and divides his time among Stamford, New York City, and San Francisco.

e: mark.frank@calibreone.com
t: +1 (203) 355 3916

Debbie Lorell

Debbie leads assignments throughout North America, EMEA, & APAC to deliver top notch VP & C-level candidates across all functional disciplines for companies of all sizes, from pre-revenue start-ups to Fortune 100.

Prior to joining Calibre One, she spent four years at Leading Edge Partners LLC, a premier boutique search firm based in Silicon Valley. She delivers outstanding results with an exceptional completion rate.

Before joining the executive search industry, Debbie worked in residential Real Estate, servicing the high-end housing market in the mid-peninsula. She also worked in advertising sales and as an Account Manager at AT&T, ranking in the top 10 percent of sales associates, winning numerous honors and awards over the years.

Debbie is an avid athlete who enjoys running, yoga, hiking, and biking. She is also a fabulous gourmet cook.

e: debbie.lorell@calibreone.com
t: +1 (650) 251 4924

Antonia Halliday

Antonia is a Principal at Calibre One, and is based out of our London office. She was part of the team that joined Calibre One following its acquisition of Hatton Grange in 2015.

Antonia specializes in consumer and healthcare within the private equity and venture capital industry, sourcing Executive and Non-Executive Board appointments for portfolio companies, as well advising and supporting on transactions with our key private equity clients. Prior to joining Hatton Grange in 2012, Antonia spent three years in executive search focusing on private equity and investment banking assignments. She graduated from the University of Leeds with a BSc Hons in Biological Sciences.

e: antonia.halliday@calibreone.com
t: +44 207 070 3006

Kristie Audiat

Kristie Audiat has been with Calibre One since early 2006. Prior to joining Calibre One, she worked as a technical contract recruiter placing candidates from programmer to director level throughout the western United States.   Before that, she worked as an in-house recruiter for a multi-billion dollar company based in the Bay Area, where she specialized in recruiting senior technical positions.   Kristie is a graduate of The University of California where she majored in International Relations. She is an avid sports enthusiast who enjoys reading political biographies and traveling whenever she can.

e: kristie.audiat@calibreone.com
t: +1 (415) 504 1154

Tora Squire

Tora is based in our London office and provides research and analysis support to searches across EMEA. She works across a range of sectors but has a particular focus on technology, internet and mobile.

Tora came to Calibre One from another boutique search firm, where she also specialised in tech-focused roles. She read Renaissance Studies & Theology at Exeter University before going to the Courtauld Institute of Art to do a Postgraduate Diploma in the History of Art.

e: tora.squire@calibreone.com
t: +44 207 070 3022

Justine Navarrette

Justine is an Associate based in our San Francisco office. She collaborates with innovative companies across the US in building out their executive leadership teams in consumer internet, enterprise software and clean technology.

Justine earned a B.A. in Criminal Justice from San Francisco State University. Justine enjoys riding her motorcycle and traveling in addition to adventures that involve food.

e: justine.navarrette@calibreone.com
t: +1 (212) 393-4763

Jonathan Schwebel

Jonathan is an Associate based in our New York City office. He collaborates with innovative companies across the US in building out their executive leadership teams in the software, fintech and technology space. Prior to joining Calibre One he spent 7 years in the financial services and financial technology arena selling software as a service and market data to some of the most prominent multinational corporations, hedge funds and buyside participants in the world. He currently lives in Westchester, NY with his wife and boxer puppy Morrison. He loves the outdoors, classic rock, traveling, and supporting the Syracuse Orange.

e: Jonathan.schwebel@calibreone.com
t: +1 (914) 673-7168

Vaiva Uryzaj

Vaiva Uryzaj is based in Calibre One’s London office and provides research and analysis supporting European assignments in the technology space.

Vaiva’s primary focus is on senior roles within VC and PE backed consumer internet, software and deep tech businesses. Her recent assignments have covered technical, product and commercial leadership roles.

She graduated from Royal Holloway, University of London with a first class degree in Management with Human Resources.

e: vaiva.uryzaj@calibreone.com
t: + 44 (0)20 7070 3015

Eloise Howells

Eloise is based in our London office and works closely with the Partners to execute global assignments. Her fields of expertise are appointing senior roles within VC and PE backed digital and media verticals. Recent appointments have included finance, marketing and operational leadership roles.

Eloise joined Calibre One after having spent one year working for another boutique headhunter specializing in supporting private equity backed businesses. She graduated from the University of Liverpool with a MA in Classics. Never one to do anything in half measures, outside of work she is a committed amateur boxer, competing at an international level.

e: eloise.howells@calibreone.com
t: +44 207 070 3021

Nicole McDougal

Nicole joined Calibre One in 2018 as an Associate based in our San Francisco office and provides research and support on C-level searches to our Partners.

Prior to joining Calibre One, Nicole worked as an in-house recruiter focused on Operations, Logistics, and IT hiring. Nicole is a graduate of Santa Clara University where she majored in Communication and Entrepreneurship. Outside of work, she enjoys spending time with her family, reading a good book, and exploring the beautiful hiking trails located in the Bay.

e: nicole.mcdougal@calibreone.com
t: (415) 445-4040

Niklas Cedenheim

Niklas Cedenheim is based in our London office and provides research support to the Partners, focusing primarily on senior roles within VC and PE-backed tech-enabled companies. Niklas has lived and worked in Sweden, the United Kingdom and Hong Kong. He joined Calibre One after graduating from the University of Glasgow with a first-class degree in Psychology.

e: Niklas.Cedenheim@calibreone.com
t: +44 (0)20 7070 3004

Reese Gibson

Reese is an Associate based in our New York office. She works closely with our Partners to collaborate with market leading firms across the US in building out their executive leadership teams, specializing in the financial services and technology sectors. Prior to joining Calibre One, Reese worked within Korn Ferry’s financial services Practice. Additionally, she has experience working at a leading financial services firm, serving as a member of their strategic business initiatives team.

Reese graduated from Bucknell University Freeman College of Management with a degree in Business Administration. She lives in Manhattan but will take any excuse to get out of the city to travel and be active.

e: Reese.gibson@calibreone.com
t: 1-774-545-0005

Suzanne Cranshaw

Suzanne started her career working in admin for KPMG, rising through the ranks in both their Liverpool and Manchester offices.

She moved to London in 1996 to help several ex-KPMG Partners found a start-up financial advisory consultancy.

Suzanne joined Calibre One as Office Manager in 2002 before becoming Head of Finance and Operations in 2008.

Within this role Suzanne had responsibility for overseeing all aspects of Finance, HR, Marketing, IT and Facilities for both the London and San Francisco offices.

Since having her daughter, Tilly, in 2010 Suzanne now works part-time and so focuses mainly on running the Finance function across the group, whilst working closely with each of the local Office Managers to ensure the smooth running of Calibre One globally.

e: suzanne.cranshaw@calibreone.com
t: +44 (0) 20 7070 3007

Sherri Cervelli

Sherri Cervelli excels at managing the day-to-day operations of the US team. She maintains and oversees the San Francisco Office, as well as accounts payable, accounts receivable, human resources and IT. She also provides assistance to the Partners on special projects and marketing. Her attention to detail and expert skills make it possible for the team to function smoothly and effectively. Prior to joining Calibre One, Sherri worked as an Executive Assistant for five years and has worked in multiple industries including banking, real estate/mortgage and financial. Sherri holds a Bachelor’s degree in Business Administration with a concentration in Marketing. She is very active and enjoys spin and yoga. She loves city life and spending time with her family, friends, and well loved dog.

e: sherri.cervelli@calibreone.com
t: +1 (415) 904 1000

Barbora Valkova

As Executive Assistant/HR & Operations Manager, Barbora controls all aspects of administration, working closely on assignments with all the UK Partners, clients and candidates. Barbora moved to London from the Czech Republic to study English in 2005. She joined Calibre One in 2011 in a role that has proved crucial to the smooth running of the London office. In addition to her Executive Assistant work, Barbora also controls HR, IT and facilities management functions for the London office. Barbora holds a Bachelor’s degree in Social Anthropology. Outside of work, she enjoys traveling, reading books and visiting art galleries.

e: barbora.valkova@calibreone.com
t: +44 (0)20 7070 3017

Adriana Cholico

Adriana joined the Calibre One team in 2017 and oversees all administration for the San Jose and Los Angeles Partners. Before joining Calibre One, Adriana worked under various Partners and Associates at a Global Law Firm. Her administrative experience and exposure to the countless tasks and urgent deadlines within the firm, fueled her to seek more challenges in her professional field.   Outside of work, Adriana has Graduated from Palo Alto University with her Bachelor’s Degree in Psychology and Social Action. One of her ambitions is to one day provide Children with Professional Therapy. Adriana volunteers as a Psycho Educator to refugees and immigrant children who are experience separation and deportation from one or two parents at Amigos de Guadalupe. During her free time, Adriana is an avid reader and loves to pick up new recipes to try in her kitchen.

e: adriana.cholico@calibreone.com
t: (650) 251-4921

Melissa Smith

Based in New York, Melissa provides administrative support and project management for Calibre One’s East Coast Partners and Associates. Melissa has over twenty years of experience as an executive assistant in a variety of fast-paced law firms and insurance companies. Keeping everyone organized and ensuring all the trains are running on track is her specialty. Outside of work, Melissa enjoys spending time with her two children, exercising, eating healthy, and listening to country music.

e: Melissa.smith@calibreone.com
t: 212-393-4759

Mabel Tong

Based in San Francisco, Mabel joined the company in 2019 as an Executive Assistant supporting the Northern California team. Before joining Calibre One, Mabel worked in facilities and operations at an insurance brokerage firm. Her experience in administration has motivated her to pursue skills in time management and attention-to-detail further. Mabel graduated from UC Davis majoring in International Relations and Communication. Outside of work, she volunteers for programs that advocate and normalize the conversation for teen suicide awareness. During her free time, Mabel loves to go kickboxing, read, and travel.

e: mabel.tong@calibreone.com
t: (415) 445-4045

Rachel Gundry

Rachel qualified as an accountant at Deloitte, before working in various roles within Finance at Warner Music for 9 years.

She joined the finance team of Calibre One on a part time basis in 2015. Working alongside Suzanne, she helps to run the finances of the Calibre One Group globally.

Rachel graduated from University of Leeds with a BSc Hons in Mathematics. She now lives in Essex with her husband and two daughters, and in her spare time enjoys pilates and park run.

e: rachel.gundry@calibreone.com
t: +44 (0)20 7070 3026

Gabby Williams

Gabby is an Executive Assistant in the London office, providing administrative support to Partners, working closely on assignments with our clients, candidates and colleagues. Originally from South Africa, Gabby moved to London in 2010 and worked in a management consulting firm before joining Calibre One in 2019. In her free time she enjoys, cooking, reading and travelling and loves spending time with her family and friends.

e: gabby.williams@calibreone.com
t: +44 (0)20 7070 3003

Katie Nelson

Katie has over 15 years of experience providing accounting, payroll and HR services to a wide range of Consulting Services, SaaS, and Not-For-Prot. Katie works in the capacity of a Controller at Calibre One. In addition, Katie assists with various consulting tools to help efficiency, revenue recognition, guidance and financial reporting. Katie values client interaction providing valuable service with tangible results.

e: katie.nelson@calibreone.com
t: +1 (408) 214-9718

Jillian Heisler

"Jillian works with the US team’s accounting, collaborating closely with Sherri, Rachel and Katie. She has over a decade of accounting experience in a wide variety of industries – most notably e-commerce, SaaS and professional services. Her favorite part of accounting is putting together the story of the numbers, while finding better technology and designing smoother processes to do it. She lives in the mountains of Colorado with her family, enjoying the great outdoors in all seasons. In between paddle boarding and hiking, she loves to read, write and can often be found cheering on the Denver Broncos."

e: accounting@calibreone.com
t: +1 (408) 201-9660

Our Track Record Speaks For Itself