Interview scorecard template

Signal Integrity Engineer interview scorecard

Evaluate Signal Integrity Engineer candidates across 4 weighted areas: technical depth, work that shipped, diagnosis under uncertainty, and working across the org. Technical depth leads at 35%, so probe transmission line theory, impedance control, crosstalk, and the serial standards they have designed. Use the rubric to compare role-specific evidence consistently.

See AI scoring
engineering applied scienceelectronicshigh speed digitalpcb designsignal integrity
TL;DR
For technical depth, look for evidence the candidate explains transmission line behaviour and crosstalk from first principles, and names the standards they closed timing against. For work that shipped, look for evidence the candidate names shipped boards where their SI guidance closed the link, with measured margin or compliance results. Apply the written 1–5 anchors to every answer, record the evidence behind each rating, and use the factor weights to reach a consistent overall assessment.
Complete evaluation framework

What to assess and how to score it

Review the evidence signals before interviewing. Then use the anchored descriptions—not instinct alone—to choose the score that best matches each answer.

01
Evaluation factor

Technical depth

35% weight

Probe transmission line theory, impedance control, crosstalk, and the serial standards they have designed to.

Evidence to listen for

  • Explains the physics or mechanism behind their work, not just the tooling
  • Names the standards, tolerances, and constraints they designed against
  • Can defend a design decision under follow-up questions
  • Distinguishes what they personally engineered from what the team delivered

Five-point scoring guide

1
Poor

Cannot explain the fundamentals of their own stated specialism.

2
Needs Improvement

Knows the vocabulary but not the underlying mechanism; struggles under follow-ups.

3
Satisfactory

Solid working knowledge for the role; depth thins out on edge cases.

4
Very Good

Strong command of the domain; explains trade-offs and defends decisions well.

5
Excellent

Explains transmission line behaviour and crosstalk from first principles, and names the standards they closed timing against.

02
Evaluation factor

Work that shipped

30% weight

Look for boards that passed compliance and shipped, with their simulation and layout guidance in them.

Evidence to listen for

  • Names specific programmes, parts, or systems that reached production or field use
  • States their own scope inside the project
  • Can give measured outcomes: yield, cycle time, cost, failure rate
  • Explains what went wrong and what they changed

Five-point scoring guide

1
Poor

No delivered work; experience is coursework, lab-only, or purely observational.

2
Needs Improvement

Contributed to projects but cannot say what shipped or what their part was.

3
Satisfactory

Has delivered real work; outcomes described without numbers.

4
Very Good

Names shipped work and their scope, with some measured results.

5
Excellent

Names shipped boards where their SI guidance closed the link, with measured margin or compliance results.

03
Evaluation factor

Diagnosis under uncertainty

20% weight

Test how they reconcile simulation against measurement when the eye closes on the bench but not in the model.

Evidence to listen for

  • Describes a real failure they chased to root cause
  • Shows a method: isolate variables, reproduce, measure, eliminate
  • Distinguishes correlation from cause
  • Says what they ruled out and why, not only what the answer turned out to be

Five-point scoring guide

1
Poor

No diagnostic method; guesses or escalates immediately.

2
Needs Improvement

Trial and error with no structure; cannot explain how they narrowed the cause.

3
Satisfactory

Reasonable method on familiar problems; less structured on novel ones.

4
Very Good

Clear systematic approach with a real root-cause story.

5
Excellent

Reconciles simulation with TDR or scope measurement methodically rather than trusting either blindly.

04
Evaluation factor

Working across the org

15% weight

Check how they get layout and hardware to accept routing constraints that make the board harder to build.

Evidence to listen for

  • Explains technical constraints to non-technical stakeholders without condescension
  • Has negotiated scope, cost, or timeline with manufacturing, product, or suppliers
  • Documents decisions so others can act on them
  • Takes review feedback without defensiveness

Five-point scoring guide

1
Poor

Cannot communicate outside their specialism; dismissive of other functions.

2
Needs Improvement

Communication gaps cause rework; avoids stakeholder contact.

3
Satisfactory

Works adequately with other teams; documentation is thin.

4
Very Good

Communicates clearly across functions; reliable collaborator.

5
Excellent

Negotiates routing constraints with layout using data, and documents the reasoning for future revisions.

Evidence-led prompts

Interview questions for a Signal Integrity Engineer

Use these prompts to surface evidence for the weighted factors above and compare candidates against the same role-specific criteria.

  1. 01

    What types of transmission lines have you worked with, and how did you use them in past designs?

  2. 02

    Walk me through how you interpret and analyse impedance control requirements on a new project.

  3. 03

    What are some ways you have dealt with crosstalk in your previous roles?

  4. 04

    How have you used S-parameters in your signal integrity work?

  5. 05

    Tell me about a board where your signal integrity work changed the outcome of the project.

See the complete Signal Integrity Engineer question set
Put this rubric to work

Score every candidate against the same standard

Add these weighted factors to Hirevire and let AI evaluate recorded answers against your rubric.

Explore AI Scorecards