Local to global: How English skills unlock a career in leadership

Samantha Ball
Two coworkers discussing some sticky notes on a class window
Reading time: 4 minutes

Of the 1.5 billion English speakers in the world, over half learned it as a second or additional language.

The “language of business”, English has become a foundational skill for anyone looking to work in an international business or at a leadership level, and many English as a Second Language (ESL) speakers find themselves working in English on a daily basis.

But working in your second or third language comes with a unique set of challenges and opportunities.

We spoke to five global leaders about the role English has played in their careers, the challenges of being an ESL speaker, and how businesses can create a culture where everyone has a voice.

How English skills unlock a career in leadership
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A passport to leadership

Strong English skills open doors. More than three-quarters of people with advanced English skills are in senior or leadership roles, compared to just 32% of those with limited English proficiency.

app Languages CTO, , describes English as a “passport for this new world of opportunities, opening many, many doors I wouldn’t have had access to.”

There’s a cumulative effect, with one door opening and leading to the next.

Brushing up on his English skills was the spark that won Perrucci a scholarship to Denmark. That semester blossomed into a six-year stay, multiple degrees, his first international job opportunity, and a career with well-known global brands.

Whether it was getting onto a top MBA program or that first role at a big international company, for all the leaders we spoke to, English has proved to be a career catalyst.

More diversity, more innovation, more revenue

For companies looking to innovate and stand out in a competitive global market, an international team is essential.

“We’re aiming to build models of childcare that don’t exist at the moment”, explains Founder and CEO, .

“To do that, we need diversity of thought. With an international team, it’s more likely that someone will say “hey, I was living in Cape Verde for a while, and I saw this interesting thing”.

It’s an approach that pays off. found that businesses with more diverse management teams are more innovative, leading to 19% higher revenues.

Global customers, global team

A more diverse team can also help businesses stay close to their customers.

As technology has made it easier to operate across multiple countries, businesses quickly find themselves responding to the different needs, preferences, and expectations of customers all over the world.

“Reflecting the global nature of our business in our workforce means we can build a better, more effective service and a more successful business as a result”, explains , CEO of .

To help them stay close to their 5.2 million members across 420 cities, Zeeck’s team at InterNations is made up of more than 50 different nationalities.

English is the main language both for the InterNations team and platform, helping them create “a sense of oneness and community by using a shared language”.

The ultimate brain training

The leaders we interviewed spoke, on average, four languages, with many working across multiple languages on a day-to-day basis.

That experience of jumping between different languages also develops important leadership skills.

“When you speak multiple languages,” explains Perrucci, “different parts of the brain have to work together and make connections… It teaches your brain to be flexible about what you see and the way you interpret it”.

Zeeck likened it to working out: “Just as going to the gym improves your physical wellbeing, the mental challenge of learning a new language is good exercise for the brain”. It’s one of the reasons he provides all of his team language training.

The mental load of language

But hopping between languages and navigating different cultural nuances can take its toll.

“People whose first language is English often overlook the computing power it takes to work in your second or third language,” explains, Managing Director of International Wellbeing,, who only spends around a third of his time speaking his mother tongue.

“Even when colleagues are fluent in the language you're communicating in, it might still take them a bit more energy than you expect”, he continues. “By Friday afternoon, for example, I’m struggling to think fluently in whichever language!”.

The challenge of speaking up

For those who are less confident in their English skills, it can significantly impact the way they contribute at work.

Less than half (48%)of ESL speakers feel comfortable speaking up at work, andonly 10%of employees with limited English proficiency felt they could express themselves fully at work.

The dynamic can change depending on who’s in the room. “I see the difference when ESL speakers are on calls with confident, fluent English speakers”, adds, CEO and Founder of.

“They speak less”, she continues, “they caveat their contributions with “I might be wrong”, and you can see their English actually worsens because they feel more stressed”.

Without the right culture and support, businesses miss out on the benefits of an international team they’ve recruited.

Conscious leadership

The task of building a team and helping overcome the challenges of global working falls to business leaders.

The five leaders we spoke to shared practical tips for supporting global teams, including acknowledging and proactively addressing differences, avoiding interrupting ESL speakers, and using voice notes for sensitive communication to allow tone and emotion to come through.

More fundamentally, ESL speakers need business leaders to build a culture where it’s ok to make mistakes.

Leaders with first-hand experience of being an ESL speaker are uniquely placed to understand their increasingly global teams, pre-empt their challenges, and nurture a culture that allows difference to shine.

The journey from local roles to global leadership positions hinges on strong communication skills. The stories shared by our leaders demonstrate how English proficiency not only unlocks individual career potential but also drives organizational success through innovation and diverse perspectives. By fostering a culture that values and supports language learning, businesses can harness these benefits, ensuring their teams are prepared to excel on the global stage.

This article is part of app Languages’ series,Global Voices: Leaders on Language and Business, an exclusive exploration into the pivotal role of language in achieving international business excellence. For more in this series, check out the leaders’ full interviews, coming soon to

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    We love sharing stories of English learners and educators whose lives have been positively transformed by the language. One such inspiring story comes from Rodrigo Tadeu in São Paulo, Brazil. Discover why he holds a special appreciation for mastering English.

    Motivations for learning English?

    Rodrigo grew up speaking Portuguese in South America. As a child, he never thought about learning another language. However, when he became an adultand began aspiring to a career, he realized that expanding his language abilities would help him achieve these dreams.

    "I worked as an accountant for an American company," he said. "So, to communicate and achieve professional success, I had to learn English!"

    Rodrigo has changed jobs since then. And even though he’s no longer required to speak English with his new company, he still feels a responsibility to himself to continue his education.

    The road to English fluency

    There are many tools that you can use to improve your English language skills, and Rodrigo used several – some he’s still using to this day. First, he started learning English formally by taking classes in high school. However, his shy disposition made it difficult for him to practice because he was afraid of failing in front of others. At the time, he didn't havecareer goals motivating him to learn the language either.

    Later, however, our adventurous accountant decided to learn English in earnest, so he traveled to Canada to study and become aconfident speaker. When he returned to Brazil, he kept studying and continues to do so. Reading books and articles, listening to podcasts and copying other English speakers have also helped develop his conversational skills. Among his favorite podcasts are "English as a Second Language" and "Freakonomics".

    English learning is not without challenges

    Rodrigo noted that he struggles with pronunciation most.“The way English speakers say words is very different than the way you would say something in Portuguese.”

    He thinks the issue is the same for Spanish speakers as well."In Portuguese or Spanish, if you know the words,you can basically speak exactly what you read. In English, it's totally different. You cannot speak the words that you are reading. So you have to know about this!"

    This might be the most challenging part of learning the language for Rodrigo, but he assured us that he’s not giving up.

    English for enjoyment

    Rodrigo may have initially studied English as a way to progress his career, but the language quickly became something he enjoyed.And instead of being content with the skill that he has now, Rodrigo dreams of continuing his English-speaking education so he can travel and further enjoy his life.

    "These days, English has become fun!" he said. "Now it's better to watch movies and TV in English."

    He also mentioned that he eventually would like to visit Europe. But when asked about his dream destination, Rodrigo said that:“I’d like to move back to Canada, maybe live in Vancouver for a year or two!”

    Advice for English language learners

    After working hard for years to learn English, Rodrigo now offers advice to fellow Brazilians (and others) who wish to speak another language:

    "You have to be confident, and don’t give up. You have to keep your dreams. It's difficult to ... speak one language that's not your mother language ... If you can imagine, you can achieve, and you can do. So 'don't give up' is the perfect phrase."

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    1. Don't take things personally when you're teaching English

    "I am probably not emotionally suited for this job. I take everything very personally and if a lesson goes wrong or an activity I have taken time and energy to plan doesn’t work, I feel like a complete failure. It’s a trial and error experience but when things go wrong, they can go very wrong, and it really makes you doubt your abilities as a teacher.

    Having said that, the lessons that do go well can make up for these negative feelings. I shouldn’t take things personally; the majority of my colleagues don’t and it saves them a lot of sleepless nights"

    2. Teaching English is incredibly rewarding

    "There are very few feelings that I’ve experienced that compare to seeing a student use a word that you have taught them – it makes you feel like a proud parent. Equally, seeing a student improve over a series of months is so joyful.I have been teaching English university preparation students for the past year.

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    3. Teach more than just English

    "Turkish students love hearing about how you appreciate their food and cultural traditions. Equally, they are genuinely interested in understanding how things operate in the UK and enjoy hearing personal anecdotes.I tend to be very open with my students – even about my personal life.I think it is partly because I have striven from the very beginning of my career to be seen as their equal.

    Turkish students are used to having a huge respect for teachers, and there is a hierarchical system in schools here, which I can never go along with. In my first lesson with most students, I tell them that they must call me by my first name (usually you refer to teachers here as ‘hocam’ which means ‘my teacher’ and shows respect) and this can take a long while for them to get used to."

    4. Failure to prepare is to prepare for failure... or is it?

    "Lessons that you spend hours preparing for generally don’t go as well as you had hoped. There were several times when I’d spend hours cutting and sticking things on pieces of card and placing pictures all over the classroom, hoping it would get some vocabulary action going, only to start the class and receive no response from the students.

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    Learn how to ask people for help

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    Learn to express gratitude

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