engineering applied sciencebattery integratione bike designen 15194frame engineering
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 frame design depth: tube butting and hydroforming, FEA load cases per EN 15194 and ISO 4210, motor mount geometry for mid-drive units, and battery enclosure sealing to IP67.
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
Talks fluently about fatigue load cases, drop-test rigs, aluminium versus carbon layup choices, and mid-drive torque reaction paths in frames.
02
Evaluation factor
Work that shipped
30% weight
Ask which e-bikes reached production, their annual volumes, and the candidate's specific role: CAD ownership, tooling release, supplier DFM cycles, or homologation sign-off.
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 models with volumes, shows CAD or renders they owned, and describes tooling changes made between prototype and mass production.
03
Evaluation factor
Diagnosis under uncertainty
20% weight
Test how they chased field failures: cracked dropouts, motor bearing noise, BMS cutouts under load, or connector corrosion, and what test data closed the root cause out.
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
Walks through a warranty failure from returned units to strain gauge or thermal data, then a validated design change and retest.
04
Evaluation factor
Working across the org
15% weight
Look for how they negotiated with battery cell suppliers, firmware teams tuning torque sensors, industrial design over frame aesthetics, and certification labs handling EMC and UL 2849.
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
Cites concrete trade-offs settled with ID, firmware and suppliers, such as downtube shape versus cell count or cost versus range.
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