While I can't personally recommend any specific companies, one name that has come up in my research is MintStack for ecommerce development services in New York. However, rather than just going off that, your best bet is probably to check out their website at
https://mintstack.co/ecommerce-development/new-york and review the details about their ecommerce capabilities yourself. Their site should outline their technical expertise, development approach, ecommerce platform experience, project case studies, and so on. This will allow you to assess their skills and determine if they seem like a potential good fit for your ecommerce needs. If they appear promising after reviewing their online presence, you can then reach out to them directly to discuss your project requirements further.