Manager, Tax

You will join our U.S compliance tax team which is a part of our Global Tax Department. Global Tax plays a critical role in managing tax strategies and compliance for a diverse portfolio of operations across multiple regions. As part of a dynamic, highly skilled group, you will collaborate with tax professionals worldwide, working on complex tax issues to support the company's global business objectives. This is an excellent opportunity to contribute to a global tax function in a fast-paced, multinational environment.

This role is primarily responsible to manage the full lifecycle of U.S. federal and state corporate income tax compliance, including identifying cash tax saving opportunities, return preparation, estimated payments, extensions, federal and state audit, and key contributions to Lam's quarterly & annual tax provision. The ideal candidate brings strong technical expertise, meticulous attention to detail, and a commitment to staying current on U.S. tax law. While the core focus is compliance, the role also contributes to targeted tax technology and process improvementinitiatives to help modernize and streamline the tax function. This position reports directly to a Senior Tax Manager and works closely with internal tax sub-teams, Finance, Accounting, and other cross-functional partners.

Corporate Income Tax Compliance

• Manage federal and state corporate income tax returns using OneSource Income Tax, ensuring accuracy, completeness, and compliance with all filing requirements.
• Review book-to-tax differences calculation, including permanent and temporary items, and detailed supporting schedules.
• Assist with the annual and quarterly tax provision for deferred tax calculations, true-up analyses, and tax attribute rollforwards (e.g., NOLs, credits, *163(j) limitation, *174 amortization).
• Manage federal, state, and franchise tax estimated tax payments and extensions, including safe harbor calculations and supporting analytics.
• Prepare cash tax forecasts and provide variance analysis to management.

Tax Incentives, Credits & Business Support

• Assist with R&D tax credit studies, including data gathering, process documentation, and coordination with external service providers.
• Support analyses of investment tax credits, manufacturing incentives, energyrelated credits, and other applicable federal or state incentives.
• Assist with incentive-related modeling, documentation, and submission packages to maximize Lam's credit and incentive position.
• Engage with internal stakeholders (e.g., R&D, Operations, Finance) to facilitate data needs for incentive claims and ensure auditready support.

State Audit Management & Tax Research

• Manage state income tax audits to ensure timely response to various jurisdictions.
• Conduct technical tax research related to federal and state income tax issues, compliance requirements, and legislative updates.
• Monitor tax law changes and assess their potential impact on Lam's positions and reporting.

Tax Technology, Automation & Process Improvements

• Manage the maintenance and enhancement of OneSource Income Tax, including supporting system updates and performing light user testing.
• Use available tools such as Excel, Power Query, Alteryx, or Power BI to help streamline recurring workpaper preparation, data transformation, or validation steps.
• Assist in standardizing templates, improving workflow efficiency, and supporting small-scale automation initiatives that enhance U.S. compliance accuracy and productivity.
• Collaborate with Finance and IT teams to strengthen tax data readiness and documentation of compliance processes.

CrossFunctional Collaboration

• Partner with Accounting, FP&A, Treasury, IT, and external advisors to ensure accurate and timely tax reporting.
• Work with internal tax subteams to coordinate key compliance deliverables and support broader tax initiatives.

Education & Experience

• Bachelor's degree in Accounting required; Master of Taxation and/or CPA strongly preferred.
• Minimum 5+ years of relevant tax experience in public accounting and/or a large corporate tax department with a focus on U.S. federal and state income tax compliance.

Technical Skills

• Strong understanding of U.S. federal and state income tax law and the ability to interpret new legislation and related guidance.
• Experience with OneSource, SAP, or similar taxcompliance platforms preferred.
• Proficiency in Adobe and Microsoft Office tools, including SharePoint, Excel, PowerPoint, and Word.

Additional Skills

• Familiarity with analytics or automation tools (e.g., Alteryx, Power BI, Power Query) is a plus.
• Strong analytical, organizational, and documentation skills, with a focus on accuracy and data integrity.
• Ability to manage multiple priorities, work independently, and collaborate effectively within a team environment.
• High ethical standards and a strong sense of accountability.
• Excellent interpersonal and communication skills for working across functions.

We believe it is important for every person to feel valued, included, and empowered to achieve their full potential. By bringing unique individuals and viewpoints together, we achieve extraordinary results.

Lam Research ("Lam" or the "Company") is an equal opportunity employer. Lam is committed to and reaffirms support of equal opportunity in employment and non-discrimination in employment policies, practices and procedures on the basis of race, religious creed, color, national origin, ancestry, physical disability, mental disability, medical condition, genetic information, marital status, sex (including pregnancy, childbirth and related medical conditions), gender, gender identity, gender expression, age, sexual orientation, or military and veteran status or any other category protected by applicable federal, state, or local laws. It is the Company's intention to comply with all applicable laws and regulations. Company policy prohibits unlawful discrimination against applicants or employees.

Lam offers a variety of work location models based on the needs of each role. Our hybrid roles combine the benefits of on-site collaboration with colleagues and the flexibility to work remotely and fall into two categories - On-site Flex and Virtual Flex. 'On-site Flex' you'll work 3+ days per week on-site at a Lam or customer/supplier location, with the opportunity to work remotely for the balance of the week. 'Virtual Flex' you'll work 1-2 days per week on-site at a Lam or customer/supplier location, and remotely the rest of the time.