What is a government contracting officer? A contractor's guide

The contracting officer is the government employee appointed under FAR 1.602 to negotiate and sign contracts on behalf of the United States. They issue solicitations, run the evaluation, award the contract, and manage it after award. Not every procurement official you speak with is a CO; program managers, contracting specialist assistants, and technical evaluators may influence the process, but only the CO has warrant authority to obligate funds.

That distinction matters. When a solicitation says "the contracting officer reserves the right," that is a legal statement. When a program manager gives you informal guidance, it is not.

A contracting specialist handles the day-to-day paperwork: market research, drafting the solicitation, checking proposals for completeness, and preparing the award file. The contracting officer reviews that work and makes the binding decision. On small procurements one person may wear both hats; on large or complex buys you will interact with a team.

Treat the specialist as your operational contact and the CO as the decision authority. Both deserve professional, timely communication, but only the CO can answer questions that change the terms of the deal.

Evaluation criteria are published in the solicitation, usually under Section M. The CO ensures the source selection follows those criteria exactly. Common factors include technical approach, past performance, price, and small-business participation. The CO does not typically score technical merit themselves; they chair or oversee a source selection evaluation board (SSEB) made up of technical experts.

Your job is to make compliance easy. Follow the instructions for submission format, page limits, and required forms. A technically excellent proposal that misses a mandatory form can be rejected without discussion.

Most solicitations include a window for questions and publish written answers in an amendment. Use that window. Ask clear, specific questions that other bidders would also benefit from, because the answer will likely be shared. Avoid asking for information already in the solicitation, and never ask for preferential treatment.

After award, the CO administers the contract: modifications, invoices, disputes, and closeout. Keep every communication factual, documented, and tied to the contract clauses.

Federal contracts are posted on SAM.gov, and federal grants on Grants.gov. The CO or their team writes the solicitation, sets the evaluation criteria, and posts it there. The best way to get in front of the right CO is to find the right solicitation early and respond with a complete, compliant proposal.