Yes, tenders can be applied online. Firstly, you need to find tender from any of the various online platforms with tender notices, relevant to your business. After that, you need to go through the requirements and see whether you can match them. It is important to analyze previous works records and measure the profits before. And, then you can prepare a proposal, submit for the bidding, and wait for the response. If you do not hear back from them in a week then you can reach out to them and ask about your proposal. Do request for a debrief either you win or lose.