Why pre-screen corrosion control engineers before the technical panel
Corrosion problems are found late because the damage is usually where nobody looks: under insulation, inside a tank floor, at a weld with the wrong material pairing. Engineers worth hiring can name the mechanism from the evidence and design against that specific one, rather than applying a coating specification and moving on. A short screen asks about a failure they investigated and what caused it.
What actually matters when screening Corrosion Control Engineer candidates
- 01
Technical depth
Check command of cathodic protection design: rectifier sizing, anode bed selection, IR drop correction, 100 mV polarization criteria, plus AMPP/NACE CP2 or CP3 credentials and 49 CFR 192/195 criteria.
- 02
Work that shipped
Probe assets they have actually protected: tank bottoms, buried pipeline mileage, offshore jackets. Ask for CIS or ECDA programs run, coating specs written, and inhibitor injection rates set.
- 03
Diagnosis under uncertainty
Test how they diagnose unclear metal loss: interpreting ILI anomaly digs, distinguishing MIC from CO2 or under-deposit attack, tracing AC or stray current interference sources.
- 04
Working across the org
Assess how they work with operations, integrity, and inspection teams: getting rectifier repairs prioritised, justifying recoat budgets, defending findings to regulators or auditors.
Pre-screening questions to ask Corrosion Control Engineer candidates
12 questions grouped by what they test. Ask the same set in every screen and score answers on a consistent scale, or send them as an async video screen and compare answers side by side.
Assets they protected
3 questions01What structures or materials have you worked on that required corrosion control?
Listen forSpecific assets and environments named, with the material and the service conditions described.
Assets described generically, or no environment or service condition given.
02What types of corrosion studies have you been involved in?
Listen forStudies they contributed to technically, with what the findings changed about the asset.
Studies described as reports produced, or findings that changed nothing.
03What is your experience with corrosion control engineering?
Listen forDepth in specific mechanisms and industries rather than broad familiarity with the field.
Experience described at survey level, or every mechanism claimed equally.
Diagnosed to mechanism
4 questions04Can you discuss the most challenging corrosion problem you have addressed?
Listen forThe mechanism identified from evidence, with the reasoning that ruled out alternatives.
Problems attributed to corrosion generally, or the mechanism never established.
05Have you been involved in failure investigation related to corrosion?
Listen forInvestigations supported by metallurgical evidence, including material pairing and environment as causes.
Failures attributed to coating breakdown by default, or no laboratory evidence used.
06Describe your experience with damage assessment and remedial action.
Listen forRemaining life assessed against measured wall loss, with remedial work scoped from that.
Remedial work specified without assessment, or remaining life not estimated.
07Are you experienced with electrochemical testing and analysis?
Listen forTesting used to support a diagnosis, with results interpreted rather than reported.
Testing outsourced with no interpretation, or results accepted without context.
Protection monitored
3 questions08Can you explain your experience with cathodic protection systems?
Listen forSystems designed and then surveyed over time, with potentials monitored and adjusted.
Systems installed and never surveyed, or protection assumed from the design calculation.
09Tell me about your experience with material selection to avoid corrosion.
Listen forSelection made against the specific environment, with galvanic pairing and cost considered.
Higher grade material specified as a default answer, or galvanic effects overlooked.
10Describe a time when you developed a successful corrosion mitigation strategy.
Listen forA strategy adopted and funded, with evidence from later inspection that it worked.
Strategies recommended and not implemented, or effectiveness never verified.
Inspection by risk
2 questions11How familiar are you with national and international corrosion standards?
Listen forStandards applied in real work, with an understanding of where they set a minimum only.
Standards named without application, or compliance treated as sufficient protection.
12How much experience do you have with coating inspection?
Listen forSurface preparation and application inspected during the work rather than assessed only afterwards.
Coatings inspected only on completion, or surface preparation left to the contractor.
How to score responses
Score every candidate on the same four criteria immediately after the screen. At this stage you are shortlisting for panel interviews, not making the final call.
Technical depth
35%5Explains CP criteria and interference mitigation precisely, cites AMPP certification level, and links design choices to soil resistivity and current demand data.
Work that shipped
30%5Names specific systems commissioned or rehabilitated, with survey mileage, remediation digs completed, and measurable reduction in corrosion-related leaks or wall loss.
Diagnosis under uncertainty
20%5Walks through a real anomaly investigation, evidence weighed (coupons, bacteria cultures, potential logs), and how the root cause was confirmed rather than assumed.
Working across the org
15%5Describes convincing operations to fund remediation, with the risk case presented and the documented outcome at the next inspection cycle.
The damage is under insulation or inside a tank floor, where nobody looks. A one-way video screen asks about a failure they investigated.
Try it on HirevireScreening FAQ
Process basics
How long should a pre-screening round for this role take?
Fifteen minutes across eight to ten questions, answered async. Enough to establish assets they worked on, test diagnosis to mechanism, and check how protection systems were monitored.
How much does industry experience matter?
A great deal. Mechanisms, standards and inspection regimes differ between marine, pipeline, process and structural work. An engineer moving between them needs support on the specifics.
Evaluating answers
What is the strongest signal when screening this role?
A failure investigation with the mechanism identified. Engineers with depth name it and explain the evidence. Anyone who attributes failures to corrosion generally has not diagnosed one.
How do I judge their prevention work?
Ask how a protection system was monitored after commissioning. Real answers cover survey readings over time. Anyone who installed a system and never checked it has protected nothing.
Go deeper on this role
Sanat has been hiring since 2012 and watching the recruitment industry change up close ever since, and turned that screening process into Hirevire's video screening platform. LinkedIn
