Going public can depend on multiple aspects so you are right being skeptical about it.
But afaik if a company has plans sooner or later they will go public. Check how the competitors are doing in terms of valuation compared to revenue and profit. Then decide accordingly.
Also on what designation you were hired? As even though its 37% hike but with 11yoe , 52 falls on the lower side afaik. But still early to comment not knowing the position you were hired for.
Espos can be asked for. Since the valuation will be on higher end as most company decide to go public when there isnt option to milk the investors hence public become the resort to make money.