### Basic information ###
Business line
Tax & Legal
City
Basel
Experience level
Experienced
Working time percentage
80% - 100%
Date published
13-Aug-2026
Req \#
22008
### Job description ###
**Location**: Basel
**Work Pattern Percentage**: 80-100%
**Advance your career where Global Mobility drives strategic impact**
In **Global Employer Services**, we support internationally mobile employees and executives as they work across borders. Our work ensures that individuals sent on assignments abroad, relocating to Switzerland, or working across multiple countries remain fully compliant with tax and social security regulations-both locally and internationally.
As a Senior Tax Consultant, you will focus on **Swiss Individual Tax**, working within a high-impact team to deliver comprehensive, tailored solutions that address the complex needs of our global clients. You will be entrusted with increased ownership and responsibility, leading client engagements, mentoring junior colleagues, and contributing to the development of innovative tax strategies. Your expertise will be instrumental in shaping client success and driving the growth of our practice.
**Your responsibilities**
* You will have the opportunity to take ownership from **day one**, to be involved in client-facing activities in the field of Swiss tax.
* You will be the **primary driver of a client engagement team**, steering tax compliance delivery, managing engagement finances, and providing regular outcome and risk reports to the manager to ensure client-centric and efficient execution. You will also integrate, mentor and **develop junior team members**.
* You will lead and manage Swiss and international tax compliance projects, including review of Swiss **tax declarations** and analyze complex international tax and social security positions.
* You will review **advice** tailored to each client, supported by thorough research and up-to-date knowledge of Swiss and international tax laws.
* You will further develop specific **knowledge** in Swiss national and international tax. Combine your strengths with the know-how of our experienced teams to unlock your full professional and personal potential, supporting clients across a broad spectrum of tax and social security topics.
* You will have the opportunity to apply your technical knowledge to challenging cases and assist in delivering **presentations** to clients and colleagues.
* You will lead **complex tax consulting briefings** with clients on intricate cross-border assignments, providing clear, practical advice on Swiss tax and social-security implications. You will build and maintain client relationships as the primary point of contact, coordinate with international teams on multi-jurisdictional matters.
**What you bring**
* Strong technical knowledge of Swiss national tax laws and international tax principles, including social security regulations related to cross-border mobility.
* Curiosity, proactive mindset with a willingness to take ownership and drive projects forward independently.
* Excellent teamwork and communication skills-both written and verbal-with the ability to explain complex tax matters clearly to clients and colleagues.
* Great analytical and problem-solving skills, with a keen attention to detail.
* Proficiency in MS Office applications and familiarity with tax software and digital tools.
* Ability to work effectively in a team-oriented, multicultural environment and fast-paced environment
**Your profile**
* Bachelor-s or master-s degree in law, business, economics, finance or similar
* 3-5 years' experience in individual taxation (German: Natürliche Personen) and social security law, gained in a trust/fiduciary practice, tax authority, social security administration or consulting firm.
* Preferred experience (non-mandatory): Experience in global mobility, expatriate or international tax advisory, including cross-border work for multinational clients.
* Commitment to continuous learning and professional development.
* Fluent in German and English
* MS Office proficiency
**Your team**
Join a dynamic and enthusiastic team at our Basel office. We not only enjoy analysing numbers but also value spending quality time together through social events.
Teamwork and cross-disciplinary collaboration across all business lines are at the heart of what we do.
**Careers at Deloitte. Choose your impact.**
At Deloitte, your ideas create impact and spark meaningful change for our clients, people and society. Your unique expertise, background and perspective helps us find new ways into the most complex challenges so we can brighten the futures of those our work affects. At Deloitte, you can build a career that inspires and energises you.
Our commitment to corporate responsibility, sustainability, and diversity ensures that your work contributes to a better future.
**At Deloitte, you can choose your impact.**
In Switzerland, we provide industry-specific services in the areas of Audit & Assurance, Tax & Legal, Strategy, Risk & Transactions Advisory, and Technology & Transformation. With close to 3,000 employees at six locations, we serve companies and organisations of all sizes in all industry sectors. We offer meaningful and challenging work, a place where you can be you and where you will never stop growing.
You will benefit from flexible and hybrid working conditions as well as wellbeing and parental programmes.
Join us and become part of a global network of like-minded people dedicated to making a difference, whether by addressing climate change or improving 100 million futures by 2030. Want to know more about opportunities at Deloitte? Visit www.apply.deloitte.ch.
**How to apply**
We look forward to hearing from you! Please click on -apply now- to submit a complete application, including CV, cover letter, references and degree certificates.
If you have any questions, please contact Lena at talent@deloitte.ch.
We do not accept applications from recruitment agencies for this position.
Deloitte Consulting AG and Deloitte AG are affiliates of Deloitte NSE LLP, a member firm of Deloitte Touche Tohmatsu Limited, a UK private company limited by guarantee (-DTTL-)
