About us Big decisions deserve clear thinking. At Sopher Co, we've spent more than 50 years helping entrepreneurs and high-net-worth individuals navigate complex financial and commercial challenges. From tax planning and private office services to business advisory and technology, we bring everything together to make life simpler and help our clients focus on what matters most. We don't just solve problems. We build relationships, offer clarity, and give our clients the confidence to move forward. And it's our people who make that possible. We started in Elstree in 1975, working closely with clients in the media, entertainment and music industries. Today, we support a diverse and prestigious client base across more than 20 sectors, with a continued strong and long-standing presence in entertainment and media. While we've grown, our approach hasn't changed. We keep things straightforward and focus on advice that is practical, personal, and easy to act on. If something's complex, we simplify it. That's where we add value. The role We're looking for an experienced US Tax Manager to join our specialist US/UK tax team in our Mayfair office. This is a varied, client-facing role where you'll provide US corporate tax advisory and compliance services to entrepreneurs, start-ups, scale-ups and mid-cap companies across a broad range of industries. You'll play an important part in delivering high-quality work and supporting the continued growth of this specialist service line. Other responsibilities include, but are not limited to: Compliance Oversee the completion of Forms 1065, 1120, 1120-S, 1120-F, 5471, 5472, 8858, 8865 and 926. Take ownership of financial management of the portfolio, including WIP management, billing targets and cash collection. Participate in developing and pursuing new clients, including preparing for and attending meetings and drafting follow-up correspondence. Support marketing events and business development activities to help achieve the firm's goals, building an effective network and developing a strong personal profile internally and externally. Workflow Document and communicate workflow status to the team on a regular basis. Ensure all jobs are completed within specific budgets, keeping the Director informed of progress at all times. Administration Ensure timesheets are completed and submitted weekly. Keep WIP levels within set budgets and advise the Director of any potential overruns. Ensure productivity levels meet or exceed budget expectations. Uphold compliance with internal policies and professional standards. Team Development & Training Supervise and develop junior staff, taking an active role in maximising their performance and supporting the annual appraisal process. Assist junior staff in developing their understanding of relevant software packages, tax laws and statutory requirements. Contribute to creating a high-performance culture that reflects Sopher Co's commitment to excellence and client care. What you'll bring You're technically strong and confident without relying on jargon. You build trust by making complex matters easy to understand. You're organised, proactive, and take ownership of your work. You're comfortable managing your own workload and deadlines, and know how to prioritise effectively. You communicate clearly and professionally, both in writing and verbally, and are confident dealing directly with clients. You enjoy working in a collaborative team where knowledge is shared openly and people support one another. You'll also bring: EA qualified, CPA or equivalent, with at least 5 years' experience in US corporate/partnership compliance. Experience working with US tax rules relating to controlled foreign companies, passive foreign investment companies, FIRPTA and partnership taxation. Strong communication and interpersonal skills, with the ability to liaise effectively with clients, staff and management. Advanced computer skills and solid working knowledge of relevant software. Strong organisational and time management skills with a high level of attention to detail. The ability to work with prestigious clients who require complete confidentiality. Knowledge and experience of trusts is advantageous but not essential. What you'll get in return We offer a competitive salary and a comprehensive benefits package, designed to support your health, wellbeing, financial security and career development. Our benefits include (some available from day one, others after probation or length of service): Private Medical Insurance Life assurance (Death in Service) Group Income Protection (GIP) Employee Assistance Programme and 24/7 Digital GP access YuLife wellbeing platform Reward Gateway (employee discounts and cashback) Generous holiday entitlement, with the option to buy and sell leave Enhanced family-friendly policies Ongoing training and development opportunities Fully funded training packages with a generous exam reward structure Recognition and long-service milestones Cycle to Work scheme Discounted wills and LPAs Social committee and regular social events Fresh fruit in the office Just as important is the environment. We're a friendly, supportive team where people enjoy working together and take pride in what they do. You'll have the opportunity to work with a well-known client base across a wide range of industries, gaining exposure that is genuinely unique and difficult to find elsewhere in a firm of our size. Our commitment Sopher Co strongly believe in staff development and continuously encourage internal progression, supporting you to grow your career within the firm. We are committed to equality of opportunity in employment and expect all employees to act in accordance with this principle, recognising its importance to the success of our business.