EXPOSED
A chemical engineer's screen work — mass and energy balances, Aspen/HYSYS model setup, P&ID markup, spec sheets, batch-record and technical-report writing, routine process-data trending — is exactly the kind of structured quantitative and document work AI now does at usable draft quality. What holds is the physical and accountable half: plant walkdowns, commissioning and startup, troubleshooting a fouling exchanger or off-spec batch on the floor, HAZOP/PHA leadership, and scale-up decisions where being wrong means a release or an explosion. The PE license matters in consulting and stamped work but the industrial exemption means most in-house process engineers work without a personal signature shield.
Part 2020 shock, part continued decline in the years since.
Median pay $108,770 → $125,040 -8.0% in real terms
This line is counted by the Bureau of Labor Statistics — the one figure on this page that isn't a judgement of ours. Headcount moves on demand, offshoring, demographics and the business cycle, and automation is one term among several, often not the loudest.
So a falling line is not evidence that AI did it, and a rising one is not evidence that it won't. Both happen in this register: some occupations resist automation and shrink anyway, others are highly automatable and keep growing. The marked year is 2020.
BLS projection, 2024–2034
+2.6% 21,600 → 22,100 on the projections basis
Growing, and only partly exposed
The BLS expects +2.6% more of these jobs by 2034, and at 51/100 the work is only partly exposed — some tasks are automatable, the core of the job is not. Nothing here is in tension.
Different clocks. The score is what current AI could do to this work today. The projection is how many of these jobs will exist in 2034. Everything between the two — how fast employers actually adopt, whether demand grows in the meantime — is why they can point opposite ways without either being wrong.
~1,100 openings a year on average, including replacing people who leave.
EngineerScientistFuel EngineerPlant EngineerControl EngineerProcess EngineerProject EngineerWeapons DesignerWeapons EngineerChemical EngineerPlastics EngineerOxidation EngineerExplosives EngineerBlending CoordinatorDevelopment EngineerLubricating EngineerEngineering ScientistChemical Test EngineerGas Combustion EngineerPolymerization EngineerControl Systems EngineerProcess Control EngineerChemical Process EngineerRefinery Process Engineer
Holding it up: judgment & accountability . Weakest point: trust premium .
Mixed — a routine tier and a judgment tier Roughly half the job — steady-state flowsheet convergence, sizing pumps and relief valves against API 520 tables, pulling DCS historian trends, drafting PSM-required operating procedures — is templated enough that AI produces a checkable first pass, but turnaround runs, distillation column troubleshooting on a live tower, and scale-up from bench to 10,000 gallons still need someone who has watched the batch misbehave, which is why this sits at 11 and not 6.
Some physical or field component You are in the plant for commissioning, line-breaking permits, sampling off-spec product, and climbing the structure to find where the exchanger is fouling, but most weeks are still office hours in Aspen and Excel with the field time bounded by unit access and PPE — that split, rather than a full-time operations role, puts it at 11 instead of the 15+ an operations supervisor gets.
Certification preferred, not legally required The industrial exemption in almost every state means the refinery or specialty-chem employer, not you, carries the engineering liability, so most process engineers never take the PE; the 8 credits the fact that PE stamps do bind consulting and EPC work and that OSHA 1910.119 PSM demands documented engineering competence, without pretending you personally sign anything.
Exists to be accountable for ambiguous calls When you approve a relief scenario, sign off on a change of raw material supplier, or lead the PHA that decides a deviation is tolerable, being wrong produces a runaway reaction or a toxic release with names attached to it — the 14 reflects that these calls are genuinely ambiguous and consequential, while stopping short of 18 because MOC review boards, PSM procedure, and corporate process-safety standards structure the decision around you.
The verdict above describes this occupation as a whole. Almost nobody does the typical version of a job — tick what's actually in your week and see how your own mix sits.
Your task mix speaks to task resistance (11/20 here) — how much of the day's work current AI already does. That is the dimension the boxes above are about.
It cannot move the other three. Liability shield (8/20) is whether the law requires a licensed human to sign. Trust premium (7/20) is whether buyers specifically pay for a person. Judgment and accountability (14/20) is whether the role exists to own consequential calls. Those are facts about the occupation's standing, not about which tasks are in your week — a paralegal who does only trial exhibits still holds no licence. Together they are 29 of this occupation's 51 points (57%).
Embodiment (11/20) is also a property of the work rather than the worker, but we don't tag individual tasks as physical or not, so the picker can't tell you anything about it. That's a limit of this tool, not a claim.
Did we get the list right? Tell us what's missing — the tasks are written from the outside, and you're reading this from the inside.
The moves above are yours to make. This is the other half: what would have to change in the world for the occupation itself to score higher. None of it is in any one person's gift, but it is where the floor actually comes from. Scores here are not a one-way ratchet. Only two of the five dimensions — task resistance and embodiment — track what machines can do. The other three track law, what buyers will pay for, and who is answerable, and those move in both directions, often in response to the same pressure AI creates. If every lever below landed, this occupation would score around 69/100 — SAFE.
An OSHA PSM standard update (the long-pending 1910.119 rulemaking) or EPA RMP amendment that names a qualified individual who must certify PHA/HAZOP completeness, revalidation, and recognized-and-generally-accepted-good-engineering-practice determinations — analogous to the 2024 RMP Safer Technologies and Alternatives Analysis certification. Requires a named human signature on the safety case, not a document.
Post-incident CSB recommendations and consent decrees that assign a specific accountable process-safety engineer to scale-up, MOC approval, and startup authorization decisions — the pattern in CSB reports since Bayer CropScience and T2 Laboratories. Formal ownership of the go/no-go call raises accountability even without a license.
Genuine two-tier structure: if flowsheet drafting, balance checks, spec-sheet and batch-record generation are absorbed by AI, the residual role concentrates in HAZOP facilitation, root-cause troubleshooting of off-spec batches, kinetics/scale-up judgment where pilot data is thin, and commissioning — tasks whose inputs are ambiguous physical evidence rather than documents. Watch for headcount falling faster than scope narrowing.
Narrowing or repeal of the industrial exemption in state PE practice acts, so in-house process design (relief-valve sizing, MOC packages, pressure-system specs) requires a licensed PE seal rather than a company sign-off. NCEES model law has pushed exemption narrowing for years and a few states (e.g. Ohio, Louisiana debates) have limited it for facilities affecting public safety; a post-incident legislature is the realistic trigger.
Insurer/underwriter conditions (FM Global, Chubb) making property and pollution coverage contingent on a named licensed engineer attesting that relief-system and interlock calculations were independently verified, not model-generated — already emerging as AI-output verification clauses in E&O policies for engineering firms.
No plausible route upward as a design change, but a shift in job definition toward field-resident roles (turnaround engineering, commissioning of new domestic capacity under CHIPS/IRA-funded plants, battery and hydrogen scale-up) would raise the physical share of the day for the subset in those roles.
The limit. Trust premium has no realistic route: buyers of process engineering are procurement organizations and EPC clients who pay for stamped deliverables and schedule, not for human authorship. The industrial exemption is the single largest cap — as long as most chemical engineers work under a corporate rather than personal signature, liability_shield stays low regardless of how consequential the work is.
| Houston-Pasadena-The Woodlands, TX | 1,510 | $138,120 +10% |
| Boston-Cambridge-Newton, MA-NH | 910 | $109,460 -12% |
| Philadelphia-Camden-Wilmington, PA-NJ-DE-MD | 790 | $127,770 +2% |
| San Jose-Sunnyvale-Santa Clara, CA | 670 | — |
| Washington-Arlington-Alexandria, DC-VA-MD-WV | 640 | $132,820 +6% |
| San Francisco-Oakland-Fremont, CA | 620 | — |
| New York-Newark-Jersey City, NY-NJ | 510 | $126,830 +1% |
| Denver-Aurora-Centennial, CO | 410 | $128,110 +2% |
| Albuquerque, NM | 80 | $163,380 +31% |
| Pittsburgh, PA | 110 | $152,290 +22% |
| Fort Collins-Loveland, CO | 40 | $139,220 +11% |
We have no reported case of a named organisation automating this occupation. Not one deployment, not one announcement.
That is worth saying out loud next to a score of 51. The verdict above is about what the work exposes — what current AI could do to these tasks. It is not a claim that anyone has done it. For this occupation those two things have come apart completely: the capability argument is on this page, and the evidence column is empty.
Has AI actually changed your work? One tap, anonymous, and the running tally is public. Nothing else is asked of you.
Rather than check back: get the digest and we'll tell you what changed — or watch a single occupation from its own page.