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EY UK

Senior Advisor, International Tax and Transaction Services, Financial Services, UK Wide

Location:  Southampton - Grosvenor House
Location flexibility:  1 office day / week, 2 office days / week
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Job Description

At EY, we’re all in to shape your future with confidence.

We’ll help you succeed in a globally connected powerhouse of diverse teams and take your career wherever you want it to go.

Join EY and help to build a better working world.

The opportunity

The international tax landscape is undergoing significant change, creating strong demand for specialist tax advisory expertise.

Our Financial Services International Tax and Transaction Services (FS ITTS) team has ambitious growth plans, making this an exciting time to join us. As a Tax Senior, you’ll have the opportunity to develop your expertise across Banking, Insurance and Wealth & Asset Management, working with a diverse client base ranging from growing inbound businesses to some of the world’s largest multinational organisations.

The combination of EY’s International Tax and Transaction Tax capabilities also means you can gain exposure to the tax structuring aspects of major corporate M&A transactions. Our breadth of work gives you the flexibility to build experience across financial services or develop deeper expertise within a particular sector.

Your key responsibilities

As a Tax Senior, you’ll play an important role in delivering high-quality advice to our clients while developing your own technical, commercial and leadership capabilities.

You will:

  • Build and maintain strong client relationships by delivering exceptional client service
  • Support the successful delivery of tax advisory projects, combining technical excellence with a practical, commercially focused approach
  • Identify opportunities to add value to clients, drawing on experience from other engagements, technical training and knowledge-sharing across the team
  • Develop strong internal and external networks and build relationships across the wider business
  • Support, coach and develop junior colleagues
  • Contribute to the continued growth and development of the FS ITTS team

Skills and attributes for success

We’re looking for someone who is:

  • Client-focused, commercially minded and strategically aware
  • A confident communicator, both verbally and in writing
  • Proactive, enthusiastic and adaptable
  • A collaborative and motivated team player
  • Committed to supporting and developing junior colleagues
  • Curious and keen to continue building their technical and industry knowledge

To qualify for the role, you should have

  • Experience working as a tax practitioner, including experience reviewing the work of others
  • A relevant professional qualification such as ATT, ACA, CA or CTA, or equivalent breadth of knowledge, for example through a legal qualification
  • An undergraduate or postgraduate degree, or equivalent professional experience

Experience working with financial services clients would be advantageous.

Ideally, you’ll also have

  • Previous experience of managing or developing people

What we look for

You’ll take a proactive approach to maintaining and developing your technical knowledge, keeping up to date with developments in UK and international taxation and considering what those changes mean for our clients.

The projects you contribute to could include:

  • Expansion into new markets
  • Pre-merger reorganisations and post-merger integration
  • Organisational structure rationalisation
  • Business model redesign
  • Capital structure and financing optimisation
  • Managing risks arising from changes in global tax legislation, including BEPS
  • Supporting lobbying and negotiations with tax authorities in the UK and internationally

Whatever the engagement, you’ll help clients develop and execute their international tax strategies while maintaining high standards of technical quality and client service.

What we offer

We’ll invest in your development through training, coaching and exposure to challenging projects and assignments. You’ll have opportunities to broaden your experience, deepen your technical expertise and continue developing your career as a tax professional.

Our Total Rewards package includes support for flexible working and career development. Through FlexEY, you can select benefits that reflect your individual needs, including options relating to holidays, health and wellbeing, insurance, savings, discounts and promotions.

You’ll also benefit from:

  • Support and coaching from experienced and engaging colleagues
  • Opportunities to build new skills and progress your career
  • Flexibility to approach your role in a way that works for you and the team

A flexible and inclusive workplace

EY is committed to creating an inclusive working environment and is happy to consider flexible working arrangements. We aim to help our people balance delivering excellent client service with building rewarding careers and managing their personal priorities.

As this is a client-facing role, some travel and time at client sites may be required.

About EY

EY is a global organisation providing assurance, tax, transaction and advisory services. Our people, expertise and capabilities are focused on helping to build a better working world.

We provide the training, opportunities and environment for our people to develop their skills, build rewarding careers and make a meaningful contribution to our clients.

If you can confidently demonstrate that you meet the criteria above, we’d like to hear from you.

Join us in building a better working world.

EY | Building a better working world

EY is building a better working world by creating new value for clients, people, society and the planet, while building trust in capital markets.

Enabled by data, AI and advanced technology, EY teams help clients shape the future with confidence and develop answers for the most pressing issues of today and tomorrow.

EY teams work across a full spectrum of services in assurance, consulting, tax, strategy and transactions. Fueled by sector insights, a globally connected, multi-disciplinary network and diverse ecosystem partners, EY teams can provide services in more than 150 countries and territories.

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Working at EY UK

1 office day / week 2 office days / week

A little flex time

Company benefits

27 days annual leave + bank holidays
Adoption leave
Annual bonus
Buddy scheme
Buy or sell annual leave
Car allowance
Career and family coaching
Charity donation scheme
Coaching
Critical Illness Insurance
Cycle to work scheme
Dental coverage
Discretionary sick pay
Electric Car Salary Sacrifice
Employee discounts
Employee recognition scheme
Enhanced maternity leave
Enhanced paternity leave
Enhanced pension match/contribution
Eye Care Support – (free eyesight testing)
Financial advice
Health assessment
Health insurance
In house training
Income protection
Joining bonus
L&D budget
Learning platform
Life assurance
Lunch and learns
Menopause support
Mental health pathway
Mentoring
Personal development days
Physiotherapy
Professional subscriptions
Referral bonus
Shared parental leave
Special leave
Sports teams
Study support
Studying sabbaticals
Surrogacy leave
Wellbeing allowance – £500
Wellbeing incentive programme
Carer’s leave – Special Leave (4 weeks paid)
Collaboration spaces
Private booths
Modern office

Awards & Accreditations

2nd - Most Inclusive Company

2nd - Most Inclusive Company

Flexa awards 2026
Best Career Progression

Top 10 - Best Career Progression

Flexa awards 2026
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Company employees:

400000

Gender diversity (m:f):

52:48

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