Walk me through your engineering background + process experience.

What it tests: Story arc - engineering training (ChemE primary), plant exposure, safety + project work.

Tell me about a process or project you've worked on.

What it tests: Process engineering thinking - safety + economics + execution.

What it tests: Authentic alignment - tangible product, plant operations, safety + economics + sustainability intersection.

What it tests: Specificity. Generic answers fail.

What it tests: Real homework - product, recent moves, culture - not name-drop.

What it tests: Industry literacy - plant + product position, recent investments, competitive picture.

What it tests: Safety + ops excellence fluency - PSM, OSHA / EPA record, lean / Six Sigma maturity.

What it tests: Process engineering rigor - data + mass + energy balance + economics + execution.

Process engineers at chemical plants, refineries, specialty chemicals, polymers, advanced materials, gases.

Can the candidate execute unit-op-level engineering with mass + energy balance discipline?
Do they understand PSM + HAZOP + LOPA + the regulatory regime around chemical safety?
Are they comfortable with capital projects + FEL phases + commissioning?
Can they navigate plant economics - margin, yield, utilities, reliability, OEE?
Do they manage cross-functional with Operations, Reliability, Safety, EHS, Finance?
Are they fluent in continuous improvement - lean, Six Sigma, debottlenecking?
Long-game fit - process engineer / senior PE / plant tech leader / production manager trajectory?

Walk me through your engineering background + process experience.
What it tests: Story arc - engineering training (ChemE primary), plant exposure, safety + project work.
Tell me about a process or project you've worked on.
What it tests: Process engineering thinking - safety + economics + execution.
Why chemicals / materials vs other engineering paths?
What it tests: Authentic alignment - tangible product, plant operations, safety + economics + sustainability intersection.
Why this product family - polymers / specialty / commodity / advanced materials?
What it tests: Specificity. Generic answers fail.
Why this firm?
What it tests: Real homework - product, recent moves, culture - not name-drop.
What's your read on our plant footprint + product portfolio?
What it tests: Industry literacy - plant + product position, recent investments, competitive picture.
Tell me what you understand about our safety + operations excellence posture.
What it tests: Safety + ops excellence fluency - PSM, OSHA / EPA record, lean / Six Sigma maturity.
Walk me through a process optimization or debottlenecking project.
What it tests: Process engineering rigor - data + mass + energy balance + economics + execution.

Unit operations + mass + energy balance

Mass + energy balance: Conservation of mass + energy applied to control volumes - input = output + accumulation.
Unit operations: Standard chemical process building blocks - reactor, distillation, absorption, extraction, heat exchange, filtration, evaporation.
P&ID (Piping + Instrumentation Diagram): Detailed process drawing showing equipment, piping, instrumentation, control + safety devices.
PFD (Process Flow Diagram): Higher-level flowsheet - major equipment + streams with mass + energy balance, no instrumentation detail.

Process Safety Management + HAZOP + LOPA

PSM 14 elements: OSHA 1910.119 elements - PHA (Process Hazard Analysis), MOC, MI, OSC, training, contractors, PSI, incident investigation, etc.
HAZOP: Hazard + Operability Study - systematic team-based review of design using guide words (no, more, less, reverse, etc.).
LOPA: Layer of Protection Analysis - semi-quantitative method to evaluate adequacy of independent protection layers.
MOC (Management of Change): Formal review process for changes to process, equipment, procedures, or personnel.

Capital projects + FEL discipline

FEL phases: Phased front-end engineering - Appraise, Select, Define - before detailed engineering + execute.
AACE estimate classes (1-5): AACE International cost estimate classification - Class 5 (concept) to Class 1 (detailed).
Commissioning + startup: Sequential cold commissioning (utilities + checks) -> hot commissioning (process fluids) -> performance test -> handover.
Stage-gate approval: Project decision gates at FEL transitions - senior leadership approval based on technical, economic, risk.

Plant economics + reliability

Gross margin + variable cost: Revenue - variable cost (feedstock + utilities + packaging + labour) = gross margin; ratio of feedstock to product is key.
Yield + selectivity: Yield = product/feed ratio; selectivity = desired/undesired product ratio.
OEE (Overall Equipment Effectiveness): OEE = Availability x Performance x Quality. World-class target 85%+; typical 60-80%.
Reliability + RCM: Reliability-Centred Maintenance - asset-criticality-driven preventive + predictive maintenance strategy.

Your reactor + downstream train is at 88% of nameplate. Walk through your debottlenecking approach to reach 100%.
You're adding a new feed material to an existing reactor. Walk through HAZOP + LOPA before authorising the change.
You're FEL-2 lead for a new 100ktpa specialty chemicals plant. Walk through what your phase delivers + key decisions.

Drop your CV and a job description on the home page. A couple of minutes later you get a report with everything you need to land the job.