Graduate beginnings, global opportunities

From trainee to Tax Manager at the Chicago International Tax Services practice, BDO USA. BDO Ireland Alumni Dean Brogan reflects on his career journey.


Dean Brogan joined BDO Ireland’s Graduate Programme in 2021 after completing his undergraduate degree at Trinity College Dublin. Starting as a Tax Trainee, he developed his technical and professional skills before progressing to Tax Senior and pursuing an international secondment opportunity in Chicago.

Looking back, Dean shares what advice he would give to someone trying to choose the right career path, and the skills, experiences and opportunities he gained during his time at BDO that have stayed with him throughout his career.

Tell us a little about yourself. What is your current role, where are you based, and when did your journey with BDO in Ireland begin?

My name is Dean Brogan, and I recently became a Tax Manager in the International Tax Services practice based in Chicago with BDO USA. I primarily focus on cross-border tax matters, international compliance, and advising multinational groups on global tax initiatives, such as Pillar Two.

My journey with BDO began in Dublin when I joined the Graduate Programme in 2021 after completing my undergraduate degree at Trinity College Dublin. I started my career as a Tax Trainee working on both Irish Corporation Tax and Income Tax. I spent 3.5 years developing my technical and professional skills before pursuing an international secondment opportunity to Chicago, where I now continue my career within the BDO network.



What attracted you to BDO's Graduate Programme? Walk us through your decision process back then.

When I was considering graduate opportunities, I was looking for a firm that would provide strong technical training, meaningful client exposure, and opportunities for long-term career development. BDO stood out because of its collaborative culture and the ability to gain hands-on experience early in your career.

I was particularly attracted by the opportunity to work closely with senior team members and clients rather than being a small part of a very large team. The Graduate Programme offered a clear path for professional development while also providing exposure to a broad range of industries and tax issues.

I had a great experience throughout the interview process and quickly felt that BDO was the right place for me to build my career.



When you were deciding where to start your career, what factors mattered most to you?

The most important factors for me were professional development opportunities, support for obtaining my professional qualifications, exposure to a variety of clients and industries, and a positive working culture.

I wanted to join an organisation that would invest in my growth and challenge me with meaningful work from an early stage. Looking back, BDO provided exactly that environment and gave me the foundation to build my career.



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Looking back, what skills, experiences or opportunities did you gain during your time at BDO that have stayed with you throughout your career? What was your highlight during your time here?

One of the most valuable things I gained was the ability to solve complex problems while balancing technical accuracy with commercial practicality. BDO also helped me develop strong communication and project management skills, which remain essential in my current role. 

I also successfully completed all Chartered Tax Advisor (CTA) examinations with the Irish Tax Institute on my first attempt. Having supportive colleagues to lean on throughout my journey, from fellow trainees through to Partners, played a significant role in making these experiences possible and is a testament to the collaborative culture within BDO. 

Beyond the technical experience, I learned how to build relationships with colleagues and clients, manage competing priorities, and take ownership of my work.
 
One of the highlights of my time at BDO Ireland was the opportunity to travel, as friends, with other trainees to Stockholm. We got to know each other well along the way, and many of those colleagues became good friends.



How did your career path evolve from BDO Ireland to your current role?

After joining BDO Ireland, I progressed as a Tax Trainee to a Tax Senior while continuing my professional development and gaining experience across different client engagements. As my career developed, I became increasingly interested in international tax and cross-border matters.

This ultimately led to the opportunity to relocate to Chicago and join the International Tax Services team. The technical knowledge, client experience, and professional network I built in Ireland made that transition possible and helped me adapt quickly to a new market and a new set of challenges.




What opportunities has working internationally given you that you may not have expected when starting your career?

Working internationally has significantly broadened both my professional and personal perspective. The opportunity to move internationally within the BDO network has been the highlight of my career to date. The experience demonstrated that the relationships and reputation you build within the firm can create opportunities far beyond what you might expect when starting as a graduate.

Professionally, it has given me exposure to different tax systems, multinational organisations, and complex cross-border issues that I would not have encountered otherwise. It has also allowed me to collaborate with colleagues from around the world and build a global professional network.

Personally, relocating to a different country has challenged me to step outside my comfort zone and develop greater confidence and adaptability. When I joined the Graduate Programme, I certainly did not anticipate that it would eventually lead to living and working in Chicago, which speaks to the opportunities that can arise from building a strong foundation early in your career.



What advice would you give to someone trying to choose the right career path?

Looking back, it was difficult to know exactly which industry, role, or firm was the right fit for me. Throughout the interview process, I got a genuine feel for the culture and working environment at BDO, which gave me confidence that it was the right place to start my career. I would suggest to focus on finding an environment where you will learn, develop, and be supported early in your career.

The first few years after university are about building skills, gaining experience, and discovering what interests you most. Choosing an organisation that offers strong training, diverse opportunities, and supportive colleagues can open doors that you may not even be aware of today.

Be curious, ask questions, take on new challenges, and remain open to opportunities as they arise. Some of the most rewarding steps in my career—including working internationally—were opportunities I could never have planned for when I first joined the Graduate Programme.


What attracted you to BDO's Graduate Programme?

I was particularly attracted by the opportunity to work closely with senior team members and clients rather than being a small part of a very large team. The Graduate Programme offered a clear path for professional development while also providing exposure to a broad range of industries and tax issues.

Inspired by Dean’s story and eager to learn how BDO can help you reach your professional goals? 
Learn more about our Graduate Programme '27 and apply today to start your journey with the right foundations.