Senior Presales Engineer

Delta, founded in 1971, is a global leader in switching power supplies and thermal management products with a thriving portfolio of innovative energy-saving systems and solutions in the fields of industrial automation, building automation, telecom power, data center infrastructure, EV charging, renewable energy, energy storage, and display, to nurture the development of innovative manufacturing and sustainable cities. As a world-class corporate citizen guided by its mission statement, “To provide innovative, clean and energy-efficient solutions for a better tomorrow,” Delta leverages its core competence in high-efficiency power electronics and its ESG-embedded business model to address key environmental issues, such as climate change.

Delta serves customers through its sales offices, R&D centers, and manufacturing facilities, which are spread across nearly 200 locations on five continents. Delta has 158 sales offices, 72 research and development (R&D) centers, and 48 manufacturing facilities worldwide.

Throughout its history, Delta has received various global awards and recognition for its business achievements, innovative technologies, and dedication to ESG. Since 2011, Delta has been listed on the Dow Jones Sustainability™ World Index for 11 consecutive years. In 2021, Delta was also recognized by CDP with leadership-level ratings for its substantial contributions to climate change and water security issues, and was named Supplier Engagement Leader for its continuous development of a sustainable value chain.

The role supports NTT overseas engagements by leading early‑stage technical discussions, shaping infrastructure requirements, and delivering optimized, compliant, and scalable data center solutions in close collaboration with internal business units and global engineering teams.

Act as the technical presales lead for data center infrastructure opportunities, supporting key accounts such as NTT Group.

Engage with customers to understand data center technical requirements, including availability, scalability, efficiency, reliability, and regulatory constraints.

Develop end‑to‑end data center infrastructure solutions, covering power architecture (UPS, rectifier systems, ESS), cooling strategies, and facility integration.

Lead the preparation of technical responses for RFI / RFP / RFQ, including:

System architecture and design concepts

Single Line Diagrams (SLD)

Layout drawings

Technical specifications and assumptions

Bill of Quantities (BoQ)

Collaborate closely with headquarters R&D, product engineering, and regional technical teams to ensure solution feasibility and alignment with Delta’s portfolio.

Support sales and corporate strategy teams during customer technical workshops, design reviews, and proposal presentations.

Provide technical clarification and support during bid evaluation and project handover phases.

Contribute technical insights on industry trends, hyperscale and AI‑ready data center requirements, and emerging power and cooling technologies.

• Bachelor’s degree in Electrical Engineering, Electronics Engineering, Power Engineering, or related fields.
• 2–5 years of experience in technical presales, solution engineering, or infrastructure design related to data center facilities.
• Hands‑on understanding of data center power systems, such as UPS, rectifiers, power distribution, and redundancy concepts.
• Familiarity with data center cooling concepts and infrastructure integration.
• Experience supporting RFI / RFP processes, including technical documentation and solution proposals.
• Ability to read and develop SLDs, layout drawings, and technical specifications.
• Strong communication skills with the ability to explain technical concepts to…