During your journey, your portfolio sank with your ship. You have no contacts in the New World. It would take months to years to gather the letter of recommendations from Europe - that is if they are still there and you remember their address from memory. The other evidence of your work is in the middle of the Atlantic Ocean.
A historical notion that still has applicability in today's world. Think refugees.
There may be some companies with biases that will prevent it, but there are plenty of companies that don't care how old you are, what you look like -- just that you're really good at what you do.
But be aware that many people overestimate their abilities or undervalue the judgement that years of experience bring. There's a lot of value in having been around long enough to see things come and go. To have made lots of mistakes and learned valuable lessons. Some people really are so good that they can skip much of that, but it's very rare. The only safe bet is to assume you're not one of those people.
And I wouldn't get too hung up about titles. If someone wants to call you "Junior Dog Walker" but pays you and treats you like you want to be treated then don't worry about it.
Also, in many places, having the "Junior Dog Walker" outshine the "Lead Dog Walker" can end up being a severe career limiting move. This seems to lead to some hierarchical tensions as many people seem to want their juniors to be juniors and little more but not too much more. How is this countered?
Youre interviewing at the wrong place, with people you shouldnt work with. When leveling a candidate two things matter, technical knowledge & leadership. Ive literally never heard anyone suggest leveling a candidate based on work history. Experience might affect comp, or indicate retention issues, but it _does not_ affect leveling.
To qualify my argument Ive a decade of experience. Ive been in "senior" roles for the last 4. Ive worked in a couple 4 man llcs, and a couple multi billion dollar tech cos. Ive probably done a hundred interviews, and ive coworkers in the hundreds and thousand range.
Yes, there are actually people with real life issues who actually face this scenario.