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The DS-160 is the one document the officer will definitely read
The DS-160 is the only form you are required to submit throughout the entire US visa process. Every other document you bring — your resume, your offer letter, your pay stubs — is optional at the officer's discretion. The DS-160 is not optional. The officer has it in front of them the moment you walk up to the window. That means whatever you wrote in that form is what they are already thinking about before you open your mouth.
The one page that matters most: your work and education information
Most of the DS-160 is straightforward — name, address, travel history, factual details. But there is one page that carries far more weight than the rest, and that is the work and education information page. The officer may never ask to see your resume. In many H1B interviews, they do not. But they will read this page. What you write here sets the agenda for your interview, so treat it with the same care you would give a job application.
How to fill in the 'briefly describe your duties' box
Inside the current work experience section, there is a box that asks you to briefly describe your duties. Do not treat the word 'briefly' literally — this is your opportunity to give the officer a clear, structured picture of what you actually do. I recommend writing at least five to six lines here. Make it descriptive and well structured. Include your designation, the domain you work in, and specific details about your day-to-day responsibilities. A vague one-liner like 'software development' tells the officer nothing and invites follow-up questions you may not be prepared for. A detailed, specific description signals that you know your role and that the petition reflects your real work.
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