• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia

Trendingnow

1

'We didn’t see this coming': Wall Street eats its forecasts as stocks sell off globally on fear of AI bubble ahead of SpaceX IPO

2

Gen Zers are arriving at college unable to even read a sentence—professors warn it could lead to a generation of anxious and lonely graduates

3

Trump, who has repeatedly called climate change fake, is now threatening Brazil with tariffs over the deforestation of the Amazon

1

'We didn’t see this coming': Wall Street eats its forecasts as stocks sell off globally on fear of AI bubble ahead of SpaceX IPO

2

Gen Zers are arriving at college unable to even read a sentence—professors warn it could lead to a generation of anxious and lonely graduates

3

Trump, who has repeatedly called climate change fake, is now threatening Brazil with tariffs over the deforestation of the Amazon
SuccessFortune The Good Life
Europe

Merck exec says Chernobyl changed the course of her life after her father begged her to leave nuclear physics on his deathbed

Orianna Rosa Royle
By
Orianna Rosa Royle
Orianna Rosa Royle
Associate Editor, Success
Down Arrow Button Icon
Orianna Rosa Royle
By
Orianna Rosa Royle
Orianna Rosa Royle
Associate Editor, Success
Down Arrow Button Icon
June 17, 2025, 2:00 AM ET
Doina Ionescu
Doina IonescuCourtesy of Merck

Being in the C-suite is a high-pressure job with long hours, board responsibilities, and intense scrutiny. But what is it like to be a top executive when you’re off the clock?

Recommended Video

Fortune’s series, The Good Life, shows how up-and-coming leaders spend their time and money outside of work.


Today, we meet Doina Ionescu, general manager of the healthcare division at Merck.

Raised in Romania, the 56-year-old joined the Fortune 500 pharmaceutical giant, Merck, after being personally impacted by the 1986 Chernobyl power station disaster. 

184

Merck’s ranking on the Fortune 500

In 1998, her father, along with others in their village, passed away from cancer after experiencing radiation exposure from Chernobyl. 

“On his deathbed, he urged me to move away from nuclear physics, a moment that reshaped my journey,” she recalled to Fortune. “I re-entered academia, working on a PhD in physical chemistry, joining Merck shortly after that.”

Ionescu’s been quietly scaling its ranks since. Promotion after promotion has taken her from a project manager to one of the company’s most senior leaders. Today, she’s a managing director of U.K. and Ireland at the pharma giant.

Looking back, while Gen Z grads snub their degrees as a waste of time and money, she tells Fortune that her Master’s in Nuclear Physics, PhD in Physical Chemistry, and an Executive MBA to add to the list of qualifications were her best investments yet. 


The finances

Fortune: What’s been the best investment you’ve ever bought?

My MBA was definitely my best investment; it is something that no matter what happens in your personal or professional life, nobody can take away from you. Long after I finished the course, I am still relying on that experience and learning. It has fundamentally changed me as a person and clearly shaped my approach to leadership and personal development.

And the worst?

I don’t tend to look back and think of things in terms of bad investments. Everything I have ever invested in with a positive mindset has benefited me in one way or another!

What personal finance advice would you give your 20-year-old self?

Never focus on the money; focus on personal development and the contribution you bring to your work, your team and your career. In my experience, if you guide yourself in this way, the finances will follow. When you do get your rewards, though, always save rainy and sunny days.

What’s the one subscription you can’t live without?

It would have to be iCloud—I really need somewhere to store all my memories! Other than that, there are a couple of financial news outlets that I couldn’t possibly comment on here!

Where’s your go-to wristwatch from?

It’s a vintage Omega that belonged to my father-in-law. He passed away many years ago, but he would be very happy to know I am wearing it.

The necessities

How do you get your daily coffee fix?

I make my own coffee, white and without sugar. In the office, we have our coffee machine in the kitchen, but I prefer the one I have at home.

“Never focus on the money; focus on personal development and the contribution you bring to your work, your team and your career.”

Doina Ionescu, general manager for healthcare, Merck

What about eating on the go?

My favourite place to get lunch is actually my office canteen; we have a wonderful chef who creates interesting and varied dishes each week! Our office canteen is also a fantastic place for me to catch up with different members of the team about everything outside of work, so I enjoy the social aspect. Other than that, I make my own lunch at home, and if I have a business meeting, I go to the Ivy Kensington, which is not far from me.

Where do you buy groceries?

Normally from Waitrose! It is convenient for me and has good choices.

Where do you shop for your work wardrobe?

I usually don’t; I haven’t bought clothes in ages. If I do ever need to get something nice and branded, however, I will go to Bicester Village to hunt a bargain. Over time in my career, I have gone from wearing business suits to dresses to silk shirts, but one thing that has definitely changed is that I have given up wearing heels.

The treats

How do you unwind from the top job?

I recently bought all the books written by the Bronte sisters to reread. They have a wonderful effect on me, taking me back to something of a timeless period. I also like to refresh my French, which can help me switch off and turn my mind away from the daily job. I’m a big fan of Duolingo because of its competitive element! During my last holiday, my daily objective was to be at the top of the Duolingo leaderboard.

What’s the best bonus treat you’ve bought yourself?

I usually put any bonuses away to save for something sensible, but if I had to pick the best purchase I have made previously, it would be a pair of Cartier earrings. They were a one-off treat for me, and I was drawn to the classic, clean look they had.

Take us on holiday with you, what’s next on your vacation list?

I have just been on holiday in France, where I have a flat, but for my next trip, although it’s a way away, it could be Thailand or Vietnam. I haven’t made my mind up! I also go to visit my mother’s countryside home in Romania each year; it’s the one place on earth where I regain my energy and ground myself. Life is very settled there, so I love it.

Fortune wants to hear from leaders on what their “Good Life” looks like. Get in touch: orianna.royle@fortune.com

The Fortune 500 Innovation Forum will convene Fortune 500 executives, U.S. policy officials, top founders, and thought leaders to help define what’s next for the American economy, Nov. 16-17 in Detroit. Apply here.
About the Author
Orianna Rosa Royle
By Orianna Rosa RoyleAssociate Editor, Success
Instagram iconLinkedIn iconTwitter icon

Orianna Rosa Royle is the Success associate editor at Fortune, overseeing careers, leadership, and company culture coverage. She was previously the senior reporter at Management Today, Britain's longest-running publication for CEOs. 

See full bioRight Arrow Button Icon

Latest in Success

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Success

Gen Z hiring manager says CEOs are right about her generation’s ‘attitude’ problem after a candidate took the interview from her phone
SuccessThe Interview Playbook
Gen Z hiring manager says CEOs are right about her generation’s ‘attitude’ problem after a candidate took the interview from her phone
By Orianna Rosa RoyleJune 9, 2026
2 hours ago
Two men sitting on chairs on a stage
Future of WorkBrainstorm Tech
Your career needs a ‘gym membership’ to keep up with continuous AI advancements, says Campus founder Tade Oyerinde
By Amanda GerutJune 8, 2026
11 hours ago
As America nears its 250th, roughly half thinks the American Dream isn’t true anymore
North Americademocracy
As America nears its 250th, roughly half thinks the American Dream isn’t true anymore
By The Associated Press, Gary Fields, Linley Sanders and Nicholas RiccardiJune 8, 2026
12 hours ago
Young people working in an office.
EconomyGen Z
Gen Z might be the flakiest generation when it comes to career and life decisions. They might also be the most intentional
By Tristan BoveJune 8, 2026
17 hours ago
Jeff Bezos commits himself to make ‘three good decisions a day,’ inspired by Warren Buffett’s philosophy of making smart choices
SuccessJeff Bezos
Jeff Bezos commits himself to make ‘three good decisions a day,’ inspired by Warren Buffett’s philosophy of making smart choices
By Sydney LakeJune 8, 2026
18 hours ago
John Furner, CEO, Walmart US
SuccessCost of living
Walmart CEO John Furner says even wealthy shoppers are now shopping at the discount grocery chain as high prices stretch six-figure earners
By Emma BurleighJune 8, 2026
18 hours ago

Most Popular

'We didn’t see this coming': Wall Street eats its forecasts as stocks sell off globally on fear of AI bubble ahead of SpaceX IPO
Economy
'We didn’t see this coming': Wall Street eats its forecasts as stocks sell off globally on fear of AI bubble ahead of SpaceX IPO
By Jim EdwardsJune 8, 2026
24 hours ago
Gen Zers are arriving at college unable to even read a sentence—professors warn it could lead to a generation of anxious and lonely graduates
Success
Gen Zers are arriving at college unable to even read a sentence—professors warn it could lead to a generation of anxious and lonely graduates
By Preston ForeJune 7, 2026
2 days ago
Trump, who has repeatedly called climate change fake, is now threatening Brazil with tariffs over the deforestation of the Amazon
Environment
Trump, who has repeatedly called climate change fake, is now threatening Brazil with tariffs over the deforestation of the Amazon
By Sasha RogelbergJune 8, 2026
13 hours ago
Current price of oil as of June 8, 2026
Personal Finance
Current price of oil as of June 8, 2026
By Joseph HostetlerJune 8, 2026
20 hours ago
'The golden years are not golden': Boomers are hoarding most of America's wealth and power because they're terrified of outliving their money
Economy
'The golden years are not golden': Boomers are hoarding most of America's wealth and power because they're terrified of outliving their money
By Nick LichtenbergJune 7, 2026
2 days ago
Current price of silver as of Monday, June 8, 2026
Personal Finance
Current price of silver as of Monday, June 8, 2026
By Joseph HostetlerJune 8, 2026
20 hours ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.