Senior Mechanical Design Engineer

aac technologies pte. ltd.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

AAC Technologies Pte. Ltd. is seeking a senior mechanical engineer to design precision mechanical systems, multi-axis motion mechanisms, and wafer handling modules for advanced semiconductor testing equipment. You will craft thermal management solutions and validate prototypes through hands-on testing.

The role requires strong CAD, FEA/CFD skills, GD&T, and collaboration with electrical, software, and manufacturing teams to ensure reliable product integration in a fast-paced environment.

Qualifications

• 5+ years in precision mechanical design (semiconductor/automation preferred).
• Proficient in 3D CAD: SolidWorks, Creo, or Autodesk Inventor.
• Experience with FEA/CFD tools (ANSYS or SolidWorks Simulation).
• Strong GD&T knowledge (ASME Y14.5) and tolerance analysis.
• Understanding of materials, thermal expansion, structural analysis, and precision manufacturing.

Responsibilities

• Design and develop precision mechanical systems and multi-axis motion mechanisms.
• Design thermal management solutions for semiconductor testing.
• Perform 3D CAD design, GD&T, FEA, and CFD simulations to optimize structure and thermal performance.
• Develop and validate mechanical prototypes through assembly, testing, and verification.
• Collaborate with electrical, software, manufacturing, and process engineering teams for integration.
• Engage with suppliers and manufacturing partners on materials and production methods.
• Drive design improvements for performance, manufacturability, and cost efficiency.

Skills

Precision design

GD&T ASME Y14.5

Thermal management concepts

Materials knowledge

Education

Bachelor's or Master's in Mechanical Engineering, Mechatronics

Tools

SolidWorks

Creo

Autodesk Inventor

ANSYS / SolidWorks Simulation

Job description

Key Responsibilities

• Design and develop precision mechanical systems, multi-axis motion mechanisms, wafer handling modules, and automated test equipment (ATE) interfaces.
• Design thermal management solutions, including thermal chucks, cooling systems, and temperature‑controlled fixtures for semiconductor testing.
• Perform 3D CAD design, tolerance analysis (GD&T), FEA, and CFD simulations to optimize structural integrity, thermal performance, and reliability.
• Develop and validate mechanical prototypes through assembly, testing, and design verification.
• Collaborate with electrical, software, manufacturing, and process engineering teams to ensure successful product integration.
• Work with suppliers and manufacturing partners to select suitable materials and production methods, including CNC machining, precision grinding, and additive manufacturing.
• Drive design improvements to enhance product performance, manufacturability, and cost efficiency.

Requirements

• Bachelor's or Master's Degree in Mechanical Engineering, Mechatronics, or a related discipline.
• At least 5 years of experience in precision mechanical design, preferably in the semiconductor equipment, robotics, automation, or precision engineering industry.
• Proficient in 3D CAD software such as SolidWorks, Creo, or Autodesk Inventor.
• Hands‑on experience with FEA and CFD simulation tools (e.g., ANSYS or SolidWorks Simulation).
• Strong knowledge of GD&T (ASME Y14.5), tolerance analysis, and precision mechanical design principles.
• Good understanding of material properties, thermal expansion, structural analysis, and precision manufacturing processes.
• Experience with wafer probers, probe cards, load boards, ATE systems, cleanroom design requirements, or precision motion control technologies is an advantage.