HGA Structural Engineer interview questions

I met HGA at a campus career fair. About a week later, I got an email inviting me for a on-site interview. The mail had a typo in the subject line. I asked about travel reimbursement and was told they do not pay for travel costs. I asked for a preliminary phone interview before traveling (on my dime) to the office. They declined and wanted an on-site so that I could "get a feeling for the office". I accepted the invitation and traveled to the office for the interview. The interview lasted ~45 minutes. I only met with the one engineer. They gave an introduction and then asked for me to introduce myself. Then asked me if I had any questions. This was awkward as I still did not know much about the company/position. They had a list of very basic questions, not specific to the position. About two weeks later, I received an email with an offer. There was also another major typo in the subject line, "Offer Letter for [not my name]". I was very turned off by their unprofessionalism of releasing the name of another applicant and general interview process.