A 2027 U.S.–China conflict with Australia aligned to the U.S. China trade stops immediately, Taiwan exports are slowed/limited, and China launches large-scale cyber disruption in waves. This is a planning scenario, not a forecast. Planning scenario, not a forecast. No end date is set.
The domestic design market is a payroll industry, not a China import line. Preliminary employment in October was 1787.0 thousand persons. The series is all employees, thousands, seasonally adjusted, architectural, engineering, and related services, NAICS 5413. The page was extracted on 7 November 2026. September was 1782.1 thousand and is also preliminary.
Direct revenue was 479.8 billion dollars. That is 2025 engineering and design services revenue on the ACEC Research Institute page, up 4.5 percent from the prior year. The same page counts 1.72 million people directly employed in engineering and design services, inside 5.8 million jobs supported more broadly, and 717.7 billion dollars of U.S. economic activity.
Government clients were 50 percent of revenue in fiscal 2025. AECOM prints U.S. federal government revenue of 1107.3 million dollars, or 7 percent, U.S. state and local governments of 3916.9 million dollars, or 24 percent, non-U.S. governments of 3019.6 million dollars, or 19 percent, and private entities worldwide of 8095.8 million dollars, or 50 percent. Total revenue was 16139.6 million dollars. No single client was 10 percent or more.
The short-horizon labor analog is one month, not a year-over-year peak. March 2020 employment was 1545.4 thousand and April 2020 was 1474.5 thousand. The calculated one-month employment decline is 4.6 percent. The quotient of 70.9 divided by 1545.4 is 4.59 percent before rounding to the nearest tenth.
Engineering firms also reported a median project backlog of 12 months in the third quarter of 2026. That quarterly backlog is the visibility print for the first quarter of a shock. Average annual industry wages increased 4.2 percent. The wage level on the same page is 119500 dollars.
China trade stopping does not remove a printed China fee. The fiscal 2025 10-K names China only as a location for urban master planning and design, alongside India, Southeast Asia, the Middle East, North Africa, the United Kingdom, and the United States. A search of the fetched 10-K text found no Taiwan string and no China revenue line.
The week-1 technical path is the project file, not the highway bid. CISA states that adversaries may attempt to infect project files with malicious code and may use built-in functions of the engineering software to download an infected program. Akira actors target small and medium-sized businesses as well as larger organizations, and the alert names backup servers and stolen credentials. Engineering design is not in the Akira sector list.
China trade stopping removes a master-planning location the 10-K names, not a measured fee. Domestic public work is the continuing book: U.S. state and local governments were 24 percent of fiscal 2025 revenue and the U.S. federal government was 7 percent. Using 1107.3 and 3916.9 over total revenue of 16139.6, the calculated U.S. public-client share is 31.1 percent.
No China fee is printed. A second filing, Tetra Tech for the fiscal year ended 28 September 2025, prints revenue of 5,442,590 thousand dollars and a U.S. federal government client share of 31.6 percent. That 31.6 percent is the printed federal share on the client table. It is not added to 14.5 percent state and local, and it is not the AECOM calculation. The calculated U.S. public-client share remains 31.1 percent, using 1107.3 plus 3916.9 over 16139.6. A text search of the fetched Tetra Tech filing found no China string and no Taiwan string. Subcontractor costs were 825,230 thousand dollars. Backlog at fiscal 2025 year-end was 4.1 billion dollars.
Asia-Australia-Pacific revenue was 1459.9 million dollars in fiscal 2025, against Americas revenue of 12526.4 million dollars and Europe, Middle East, India, and Africa revenue of 2153.3 million dollars, on total revenue of 16139.6 million dollars. The calculated Asia-Australia-Pacific share is 9.0 percent to the nearest tenth. Revenue from services provided outside the United States to non-U.S. clients was approximately 27 percent. That region is not a Taiwan line.
A client freeze hits the contract that cannot reprice. For the year ended 30 September 2025, revenue was 38 percent cost-reimbursable, 37 percent guaranteed maximum price, and 25 percent fixed-price. Cost-reimbursable work bills direct and indirect cost plus a fee. Fixed-price work does not.
Project demand that is not an engineering fee can still fill the design desk. U.S. data center construction spending went from 20 billion dollars in 2023 to 49.7 billion dollars in 2025 on the ACEC page. That figure is construction spending, labeled here as project demand, not design revenue. The same page says overall U.S. construction spending is forecast to decline 1.3 percent, also labeled as demand, while engineering revenue is a separate series.
The domestic break in week 1 is a file or billing outage. CISA's project-file technique uses engineering software. Akira's alert, current as of 13 November 2025, says actors exploit edge devices and backup servers and compromise credentials. A design office can be open and still unable to issue a drawing or a bill.
Taiwan is an explicit gap in the filing that was opened, not a foundry share. The fetched AECOM fiscal 2025 10-K text does not contain Taiwan. No page opened here prints a Taiwan office, a Taiwan project fee, or a Taiwan line for the CAD tools this industry buys.
Short-horizon labor analog: March 2020 employment was 1545.4 thousand and April 2020 was 1474.5 thousand. The calculated one-month employment decline is 4.6 percent. The unrounded quotient is 4.59 percent. This is not a year-over-year peak.
Short-horizon visibility analog: engineering firms reported a median project backlog of 12 months in the third quarter of 2026. Short-horizon cash analog: days sales outstanding was 74 days.
Six-month staffing analog: September 2020 employment was 1499.1 thousand against March 2020 at 1545.4 thousand. The calculated six-month employment decline is 3.0 percent.
Annual labor-cost print, not the one-month analog. Average annual industry wages increased 4.2 percent. The level beside that rate is 119500 dollars. The debt rate beside the firm is separate. The average effective interest rate on total debt was 5.1 percent.
Wave 1 is the project file and the engineering software that writes it, plus the public infrastructure client whose control system that file can feed. Design offices and CAD are direct. EPC engineering teams and public infrastructure clients are indirect because they stop when the file or the client system stops. This ordering is a planning inference. CISA does not assign weeks.
Wave 2 is enterprise billing and timekeeping, and the private industrial client whose own systems or mandate pause. Project staff and billing are direct. Industrial and energy design clients are indirect. Akira's alert on backup servers and credentials is the enterprise path. The sector list on that alert does not name engineering services. This ordering is a planning inference.
Wave 3 is the distributed set. Small engineering practices, 38870 firms with fewer than 20 employees in the 2022 file, are the later direct target. Client program backlogs are later and indirect. This ordering is a planning inference.
origin sharepercent
Government clients were 50 percent
AECOM Form 10-K, year ended 30 September 2025price changepercent
The calculated one-month employment decline is 4.6 percent.
BLS Current Employment Statistics, NAICS 5413The calculated six-month employment decline is 3.0 percent.
BLS Current Employment Statistics, NAICS 5413Average annual industry wages increased 4.2 percent.
ACEC Research Institute, 2026 economic assessment articleworkforcethousand persons
Preliminary employment in October was 1787.0 thousand persons.
BLS Current Employment Statistics, NAICS 5413sitesestablishments
Engineering services had 62590 establishments.
Census SUSB 2022 detailed employment sizes, engineering servicesus direct revenuebillion dollars
Direct revenue was 479.8 billion dollars.
ACEC Research Institute, 2026 economic assessment articledaysdays
Days sales outstanding was 74 days.
AECOM Form 10-K, year ended 30 September 2025ratespercent
The average effective interest rate on total debt was 5.1 percent.
AECOM Form 10-K, year ended 30 September 2025Separate the public book from any China-located master-planning assignment. The public rows are the 7 percent federal line and the 24 percent state and local line. Confirm the drawing archive and the timekeeping system can be restored without the live file server. CISA's project-file note is the reason the archive matters.
Read DSO against 74 days and read the monthly NAICS 5413 employment print against the 4.6 percent one-month analog. List fixed-price mandates, which were 25 percent of AECOM revenue, separately from cost-reimbursable mandates, which were 38 percent.
Restaff toward the domestic backlog. Americas backlog was 32.8 billion dollars of 39.7 billion dollars. Approximately 57 percent of remaining performance obligations are expected inside twelve months. The median industry backlog print for the third quarter of 2026 was 12 months.
NAICS 5413 employment, one-month percent change. Act when seasonally adjusted NAICS 5413 employment falls by more than 4.6 percent in one month. The 4.6 percent line is the calculated March 2020 to April 2020 move from 1545.4 thousand to 1474.5 thousand, rounded to the nearest tenth. BLS does not publish this tripwire. It is a planning line.
Days sales outstanding. Act when DSO prints above 74 days. Seventy-four days is the 30 September 2025 AECOM print. AECOM does not publish 74 days as a covenant. It is a planning line at the latest observed level.
Median project backlog, months. Act when the reported median project backlog falls below 12 months. Twelve months is the third-quarter 2026 ACEC print. ACEC does not publish 12 months as a covenant. It is a planning line.
U.S. state and local government share of revenue. Act when U.S. state and local government revenue falls below 24 percent of total revenue. Twenty-four percent is the AECOM fiscal 2025 print. The filing does not make 24 percent a covenant. It is a planning line for the domestic public book.
Keep an offline copy of active project files separate from the backup server Akira-type actors target.
Split the book into U.S. public mandates and any China-located master planning before week 1.
Watch the monthly employment print against the 4.6 percent planning line.
Report staff revenue excluding pass-through. Pass-through was 53 percent.
Flag fixed-price engineering separately from the 38 percent cost-reimbursable slice.
Do not treat subcontractor cost as this industry's payroll exposure.
Hold a bench plan for the 146379 people in engineering-services firms with fewer than 20 employees as the fragile layer, and for the approximately 51000-person enterprise separately.
Tie utilization to the 12 month median backlog print.
Run a case at the 74 day DSO planning line.
Cover the 66.3 million dollar fiscal 2026 debt maturity without assuming pass-through cash arrives on time.
NAICS 5413 all employees, thousands, seasonally adjusted It is the monthly staffing print for architectural, engineering, and related services. October 2026 was 1787.0 thousand and preliminary. A one-month drop larger than the April 2020 analog is the labor tripwire.
Days sales outstanding It is the billing cycle. The latest firm print is 74 days. Invoices are the cash event when project files still exist but cannot be billed.
Share of revenue from U.S. state and local governments It is the domestic public book that does not clear through China. The fiscal 2025 print is 24 percent.
Median project backlog, months The third-quarter 2026 industry print is 12 months. A shorter book is the demand tripwire inside one quarter.
Observed baselines are the BLS monthly cells, the ACEC page, the AECOM 10-K, the 2022 SUSB engineering-services size file, and the two CISA pages. Scenario inferences are the wave order, the ability to reseat China master-planning staff on U.S. public work, and any claim that a 2027 path will match April 2020.
Unpublished primaries. The AECOM fiscal 2025 10-K does not print China revenue or any Taiwan string. No fetched page prints a Taiwan office, a Taiwan project fee, or a Taiwan line for CAD tools this industry buys. A counted number of days of a named CAD outage was not published. SUSB firm size is the 2022 file, not a 2026 size table. Census API tables that would have refreshed establishment counts returned a missing-key page and were not used.
Calculated figures use two printed inputs and are labeled. The 4.6 percent one-month decline uses 1545.4 and 1474.5. The unrounded quotient is 4.59 percent and is stated as 4.6 percent to the nearest tenth. The 3.0 percent six-month decline uses 1545.4 and 1499.1. The 9.0 percent Asia-Australia-Pacific share uses 1459.9 and 16139.6. The 31.1 percent U.S. public-client share uses 1107.3 plus 3916.9, divided by 16139.6. The 82.6 percent Americas backlog share uses 32.8 and 39.7. The 31.9 percent large-firm employment share uses 383099 and 1199635. The 85.1 percent small-firm share uses 38870 and 45692. The 12.2 percent small-firm employment share uses 146379 and 1199635. The 33000 non-U.S. staff difference uses the approximate counts 51000 and 18000. The four-day DSO gap uses 74 and 70.
Series are not interchangeable. BLS 1787.0 thousand is NAICS 5413 payroll employment. ACEC 1.72 million is direct engineering and design services employment in 2025. SUSB 1199635 is 2022 NAICS 541330 engineering-services employment. AECOM backlog is gross and may include pass-through. Data-center construction spending of 49.7 billion dollars and undisbursed infrastructure funding of 198.6 billion dollars are project demand, not fees. The Akira sector list does not name engineering services. The 4.6 percent, 74 day, 12 month, and 24 percent triggers are planning lines, not covenants.
| Node | Primary impact | Time horizon | Cyber wave | Evidence |
|---|---|---|---|---|
| Design offices | Domestic public design continues, and a project-file outage stops the drawing before the client site does. | 0-3 months | Wave 1 (direct) | AECOM client mix; CISA project-file page |
| EPC engineering teams | Pre-construction engineering keeps billing while pass-through construction cost is not this industry's payroll. | 0-3 months | Wave 1 (indirect) | AECOM pass-through disclosure |
| Project staff | Staff cannot book time when the file system or the timekeeping system is down. | 0-6 months | Wave 2 (direct) | AECOM headcount and DSO; Akira alert |
| CAD and engineering software | Infected project files can be written from engineering software into the systems a client operates. | 0-3 months | Wave 1 (direct) | CISA project-file technique |
| Public infrastructure clients | State, local, and federal design mandates continue when China trade stops. | 0-12 months | Wave 1 (indirect) | AECOM government rows; ACEC infrastructure demand |
| Billing and timekeeping | Invoices slip when backup servers or the credentials used to approve bills are taken. | 0-3 months | Wave 2 (direct) | AECOM DSO; Akira alert |
| Industrial and energy design clients | Private industrial work can pause even while the public book continues. | 1-6 months | Wave 2 (indirect) | AECOM private-client row; ACEC data-center demand |
| Small engineering practices | Firms with fewer than 20 employees have little bench if a ransomware event locks the only drawing set. | 0-6 months | Wave 3 (direct) | SUSB 2022 size file; Akira alert |
| Client program backlogs | Most of the signed gross book is domestic, and about half of remaining performance obligations fall inside a year. | 1-12 months | Wave 3 (indirect) | AECOM backlog and RUPO |