Substrate Designers for Coimbatore (WFH)

Design complex package substrate layouts using Cadence Allegro APD.

Develop substrate stack-up based on electrical and manufacturing requirements.

Perform die fan-out, BGA fan-out, escape routing, and high-density routing.

Design power distribution networks, reference planes, shielding structures, and return paths.

Optimize routing for high-speed differential pairs and impedance-controlled signals.

Create substrate documentation including fabrication drawings, Gerber, ODB++, IPC-2581, BOM, and manufacturing packages.

Engineering Collaboration

Work closely with SI/PI engineers to optimize impedance, insertion loss, return loss, crosstalk, power integrity.

Coordinate with Mechanical Engineering on package outline, keep-out regions, stiffeners, connectors, and assembly constraints.

Support DFM reviews with substrate vendors.

Communicate technical issues directly with customers when clarification is required.

Manufacturing Support

Ensure layout complies with fabrication capabilities.

Review vendor DFM reports and implement necessary changes.

Support prototype build, engineering validation, and production release.

Design Verification

Review stack-up,



routing quality, copper distribution, and return current continuity.

· Perform layout verification including DRC, Constraint Manager checks, connectivity verification, manufacturing checks.

Support SI/PI simulation teams with required layout information.

Continuous Improvement

Improve design methodology and reusable libraries.

Develop routing guidelines and best practices.

Participate in process optimization and automation.

Required

Bachelor's degree in Electrical Engineering, Electronics Engineering, Mechatronics, or related field.

4+ years of experience in:

MLO substrate design

IC package substrate

High-density PCB

Robust experience with:

Cadence Allegro APD

Allegro PCB Editor

Positive understanding of:

HDI technology

Microvia structures

Sequential lamination

Familiar with:

impedance control

differential routing

return path optimization

EMI/EMC fundamentals

Experience working with manufacturing vendors and DFM reviews.

Pay: ₹50,000.00 - ₹90,000.00 per month

Work Location: In person

📌 Substrate Designer Coimbatore
🏢 Thanu Associates
📍 Coimbatore