Interview scorecard template

Desalination Ecosystem Engineer interview scorecard

Evaluate Desalination Ecosystem 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 check command of SWRO train design: intake screening, pretreatment (DAF, UF), membrane flux and recovery limits, energy recovery devices, and brine density plume modelling. Use the rubric to compare role-specific evidence consistently.

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engineering applied sciencebrine outfall diffusersmarine impact assessmentmembrane foulingreverse osmosis
TL;DR
For technical depth, look for evidence the candidate quotes real flux, recovery and salinity figures; explains diffuser port spacing and dilution ratios against local benthic tolerance limits. For work that shipped, look for evidence the candidate names specific plants and their role in each, with before and after monitoring data and permit conditions actually met. 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

Check command of SWRO train design: intake screening, pretreatment (DAF, UF), membrane flux and recovery limits, energy recovery devices, and brine density plume modelling with CORMIX or Delft3D.

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

Quotes real flux, recovery and salinity figures; explains diffuser port spacing and dilution ratios against local benthic tolerance limits.

02
Evaluation factor

Work that shipped

30% weight

Probe plants they took from feasibility to commissioning: capacity in m3/day, intake type chosen, entrainment mitigation fitted, and measured post-commissioning receiving water salinity.

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 specific plants and their role in each, with before and after monitoring data and permit conditions actually met.

03
Evaluation factor

Diagnosis under uncertainty

20% weight

Assess how they chased causes of unexplained differential pressure rise, biofouling blooms, red tide intake shutdowns, or seagrass decline near an outfall with ambiguous baseline data.

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 autopsy of membranes, SDI trends and ambient sampling, separating plant impact from natural variability before acting.

04
Evaluation factor

Working across the org

15% weight

Look for work alongside marine biologists, regulators on NPDES or equivalent brine permits, plant operators, and EPC contractors during design reviews and stakeholder hearings.

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

Describes translating ecological monitoring requirements into contractor specifications and defending outfall design to regulators and coastal communities.

Evidence-led prompts

Interview questions for a Desalination Ecosystem Engineer

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

  1. 01

    What experience do you have designing, building or maintaining desalination systems?

  2. 02

    Can you describe any large-scale desalination projects you have worked on?

  3. 03

    Which desalination technologies are you most familiar with?

  4. 04

    How do you address scaling and fouling in membranes?

  5. 05

    Can you discuss a time when you had to troubleshoot a problem at a plant?

See the complete Desalination Ecosystem Engineer question set
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