Senior .NET back-end engineer

We're a fintech company with offices in Houston and Chicago (optimargin.com) with a majority remote Russian-speaking team. This ad is in English because we require an advanced level of English from all candidates. We are looking for a senior .NET core back-end developer (full stack experience is a plus but not required). The primary role is building out new features according to client requests and our development roadmap, and maintaining existing code.

Requirements:

at least 6 years back-end development experience.
at least 3 years experience with ASP/ .NET core on an international team/project(s).
experience developing Web APIs
experience with MongoDB
basic understanding of AWS infrastructure
advanced level of English
experience in fintech is a plus
front-end experience with Angular is a plus

Our software stack: AWS; .NET Core 3.1+; MongoDB; Swagger; Angular (front-end); Gitlab for version control.

Qualified candidates should be able to work remotely full time with at least 3 overlapping working hours with the US Central timezone.