The person will be responsible for managing and growing existing business by collaborating closely with the Business Units, Customer Service, Technical Support, Quality, Production, and Sales Support teams. This role involves forecasting revenue, ensuring on-time delivery, and, when necessary, expediting product deliveries to enhance customer satisfaction. Additionally, the candidate will work closely with the Account Management team to identify, develop, and lead selected new business opportunities based on account priorities, product scope, and candidate capability. This role will serve as a dedicated Customer Enablement partner focused on sustaining existing business, improving customer experience, supporting market share expansion from the installed base, selectively leading new business development opportunities, and strengthening commercial execution through forecast discipline, allocation visibility, PCN horizon planning, AR issue resolution, and cross-functional coordination.

• Lead and manage existing customer business across Entegris’ broad portfolio of products and solutions, supporting sustained growth, customer satisfaction, and stronger commercial execution. • Own sustained existing business management, including revenue protection, recurring demand visibility, customer satisfaction, and share-of-wallet expansion within current programs. • Orchestrate Entegris’ assets, resources, and systems to deliver a state-of-the-art customer experience when customers use Entegris solutions and products. • Manage product forecasting, allocation, on-time delivery, and expedite requests. • Develop and maintain a rolling 18-month forecast view in partnership with customers, Account Management, Business Units, Supply Chain, and Customer Service to improve planning accuracy and reduce supply risk. • Market share gains from existing business. • Contribute to revenue growth through strategic collaboration with the Account Management team on new business development. • Lead enablement service standards for key customers by proactively managing allocation constraints, order blocks, expedite requests, DOI oversight, PCN readiness, and AR-related issue resolution. • Drive revenue growth and achieve or exceed sales targets for existing business. • Lead and collaborate with diverse cross-functional teams, including Product Marketing, Quality, Application Engineering, and Customer Support, to sustain ongoing business operations. • Maintain a strong understanding of market share and use this insight to prioritize growth opportunities. • Use technical expertise to accurately identify customer issues and proactively lead solution development in collaboration with internal teams. • Create case studies and repeatable best practices from customer enablement activities to support scalable execution across top customers and small-to-midsize accounts. • Provide the appropriate level of technical application support to ensure smooth PCN implementation. • Maximize margins and protect ASP (average selling price) by minimizing discounts and maximizing price increases. • Effectively present the benefits and capabilities of Entegris technology. • Conduct regular analyses of revenue and product quality issues to understand customer needs and collaborate with the account team to identify new opportunities. • Provide quotations, solicit purchase orders, and finalize sales. Effectively manage customer expectations regarding inventory support while mitigating risk and protecting Entegris assets.

• Proven success in achieving revenue targets and Business Unit goals, as well as executing marketing strategies end to end. • Excellent interpersonal and communication skills, with experience working in a matrixed environment and managing multiple priorities under dynamic timelines. • A self-driven technical sales professional who leads growth and ensures customer satisfaction. • Bilingual fluency in English and Korean. • Demonstrated track record of meeting or exceeding sales targets and plans. • Bachelor’s degree with 5+ years of sales experience in the semiconductor industry and 10+ years of work experience with IDMs, chemical suppliers, or equipment suppliers. • Demonstrated ability to lead negotiations and work through ambiguity. • Balanced technical and business acumen.

People and Teamwork • Strong individual contributor • Self-motivated, curious, and creative problem solver. Accountability, Integrity, Trust • Strong communication and presentation skills. • Reliable, respectful, and trusted colleague. Creativity and Innovation • Creatively collaborate across functions in a matrixed organization. Dedication to Excellence • Delivery regional sales objectives. • Provide input on how to improve products, services, and business practices. • Improvement in forecast accuracy, on-time shipment visibility, allocation management, PCN readiness, and customer experience metrics for existing business. • Commitment to self-development.

[채용 절차] 서류 전형 ＞ 면접 전형 ＞ 최종 합격 - 채용 전형 관련 상세 내용은 추후 별도로 안내드릴 예정입니다. - 포지션에 따라 전형이 추가될 수 있습니다. [이력서 제출 방법] • 영문/국문 이력서를 하나의 PDF 파일로 첨부 부탁드립니다. (영문 → 국문 버전 순서) • 파일명은 다음과 같은 형식으로 맞춰주시기 바랍니다. (영문 성함_Job Title)

• 복지포인트 연간 210만 pt 제공 (본인 건강검진 30만 pt 별도 제공) • 1년 미만자도 연차 17일 제공 (입사일 기준으로 일할 제공) • 어학 교육 프로그램 지원 • 전화비 약 8만원 지원 (실비 정산) – 직무에 따라 차이 있음