1. Practice leet code until you can solve all medium and some hard questions.
2. Apply cold or find people on blind, LinkedIn, etc willing to refer you.
3. Use your leet code skills to pass the interview.
If you do all 3 steps, I guarantee you will get a job in startup world. These steps may have challenges but all are achievable of you put in the hrs.
Bonus: do well in that job for 2 years and then you will be able to hop companies if you like