Tax Senior

Affinia
Reference: VAR008
Location: Essex offices including Colchester, Chelmsford, Harlow, Halstead, or Leigh
Working Pattern: Hybrid

Join Affinia, a Top 35 UK Accounting firm, and become part of a business that combines deep technical expertise with a people-first approach. With a reputation built on excellence, collaboration, and long-term client partnerships, Affinia supports organisations and individuals with everything from accounting, audit, and tax planning to strategic advisory and specialist services.

With more than 600 professionals across 15+ offices throughout London, East Anglia, and Southeast England, Affinia brings together over 300 years of combined experience. Our teams work across seven principal practice groups, delivering tailored advice to businesses, public sector bodies, government organisations, and private clients in the UK and internationally.

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About Affinia

At Affinia, we are committed to helping clients succeed in a constantly changing regulatory and commercial environment. We combine technical excellence, market insight, and modern technology to deliver practical, high-quality solutions that support both immediate priorities and long-term ambitions.

Our service offering spans:

• Accountancy & Advisory

• Tax and Planning

• Audit Services

• Corporate Finance

• Digital Solutions

• Payroll

• Financial Planning

Through ongoing investment in technology, sector expertise, acquisitions, and private investment, we continue to grow while maintaining a strong focus on authentic relationships, trusted advice, and exceptional service.

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The Opportunity

We are looking for an experienced and motivated Tax Senior to join our growing and forward-thinking Tax team. This is an excellent opportunity for a tax professional who is ready to deepen their technical knowledge, take greater ownership of client work, and begin developing leadership capabilities within a collaborative and supportive environment.

This role is particularly suited to someone with strong experience in Corporation Tax compliance processes and workflow, while also offering the chance to contribute to a variety of high-value advisory projects across a diverse client portfolio.

As a Tax Senior, you will play an important role in delivering high-quality client service, supporting the development of junior team members, and contributing to the wider growth of the department.

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What You’ll Be Doing

In this role, you will be involved in a broad mix of compliance, advisory, client-facing, and team support responsibilities, including:

• Preparing a wide range of tax returns, including those of varying complexity

• Reviewing basic tax returns and other compliance documentation

• Supporting the delivery of accurate, timely, and high-quality client work

• Liaising with HMRC on a variety of tax matters

• Assisting with advisory assignments and project-based work

• Participating in client meetings to understand tax requirements and support senior colleagues with solutions

• Identifying potential tax planning opportunities and escalating these to the management team

• Working collaboratively with colleagues across departments to ensure excellent client outcomes

• Mentoring and supporting junior staff where appropriate

• Assisting with training, feedback, and day-to-day team development

• Sharing knowledge and ideas to help the team achieve its objectives

• Taking part in professional development activities to strengthen technical knowledge and legislative awareness

• Contributing to business development activities, helping to promote Affinia and its services to existing and prospective clients

Your involvement in business development will be tailored to your experience and career goals through your personal development plan.

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What We’re Looking For

We are keen to hear from candidates who bring a strong technical grounding, a collaborative mindset, and the confidence to build trusted relationships with clients and colleagues alike.

Skills and Experience

• Strong experience in Corporation Tax compliance

• Solid understanding of tax laws and regulations

• Ability to manage work both independently and as part of a team

• Strong analytical skills with excellent attention to detail

• Confidence communicating with a wide range of stakeholders

• Proficiency in tax software and the Microsoft Office Suite

Qualifications

• ATT qualified, or close to qualifying

• If you are continuing your professional studies, Affinia will support you in completing your chartered qualifications, such as CTA

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Development and Support

Affinia is committed to helping its people grow. In addition to supporting professional qualifications, we provide continued learning opportunities to help you develop both technical expertise and broader professional capabilities.

As part of this, you will have access to:

• Support to complete professional qualifications such as CTA

• Ongoing training in soft skills, including coaching and leadership

• Access to Croner-i’s CPD and technical library

• Selected resources from Mercia

This is a role designed to help you strengthen your technical foundations while gradually expanding your influence across client delivery, team development, and future leadership.

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Working Arrangements

We operate a **hybrid working model**, giving you the flexibility to divide your time between:

• One of our Essex offices

• Client sites, where required

• Home working, where appropriate

This approach supports both collaboration and flexibility, helping you work effectively while maintaining balance.

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Core Benefits

At Affinia, our culture is shaped by ambition, inclusivity, and a genuine commitment to the success and wellbeing of our colleagues. We want our people to thrive, and we offer a supportive environment alongside a strong benefits package.

Our core benefits include:

• 23 days holiday (FTE) plus Bank Holidays (September–August)

• Auto-enrolment Pension Scheme with True Potential

• Death in Service

• Professional membership support

• Paycare – claim money back for:

• Dental

• Optical

• Professional therapies

• Agile/Hybrid Working Policy

• Dress for your Diary Policy

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Why Join Affinia?

Affinia offers the opportunity to be part of a respected and growing firm where your contribution matters. You will work alongside talented professionals, gain exposure to a varied client base, and have the support to build a rewarding and progressive career in tax.

If you are looking for a role where you can combine technical excellence with meaningful client interaction, team contribution, and long-term development, this could be the ideal next step.

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Additional Information

Please note that this job profile is intended to provide an overview of the role and its main responsibilities. It is not an exhaustive list of duties, and additional tasks may be requested by your line manager as needed.

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Equal Opportunities

Affinia is proud to be an Equal Opportunity Employer. We are committed to creating an inclusive workplace and do not tolerate discrimination on the basis of age, disability, sex, race, religion or belief, gender reassignment, marriage or civil partnership, pregnancy or maternity, or sexual orientation.

We actively welcome applications from candidates of all backgrounds and believe in recognising talent, skills, and potential on merit alone.