The traditional way to involve a senior engineer in a tender is to send them the specification and ask them to "have a look". They have a look at 6 pm on day five, find eleven things they do not like, and the bid manager has one day to deal with all eleven.
What the engineer should never be asked
Anything the datasheet answers. Anything the certificate answers. Anything the ITP answers. These are the four hundred Comply lines, and they are not engineering questions — they are lookups with page numbers. Asking an engineer to confirm them is asking them to do clerical work slowly.
What they should be asked
The items no document settles. "Can ISO 15848-1 class B be offered on the V300 range, with what packing, and at what cost and lead-time impact? Closest evidence: certificate FS-2025-118, class C." A question like that has a short answer — yes, graphite packing set, +6 %, +3 weeks — and the engineer can give it in two lines between other work.
Ranked
Not all open items are equal. One blocks a mandatory requirement with no Comply path: without an answer, the bid is non-compliant. Another affects price. A third is a nice-to-have the buyer will score lightly. The list is ranked in that order, grouped by discipline, so the engineer can stop at the line where their time runs out and the bid manager knows exactly what is still open.
Day one, not day five
The question list exists as soon as the matrix does — hours after the package is uploaded — so the engineer gets it with the whole tender period to answer, not the last evening. The most common feedback from design partners is not about the matrix. It is "the engineers stopped dreading tenders".
Answers become library
An answer that establishes a new capability — yes, class B is available with this packing — can be saved as a declaration. The next tender cites it instead of asking again.