Senior Backend Engineer - Capital Markets (C#/.NET)
Summary
A senior backend engineer designing scalable, high-performance capital-markets systems at a financial services firm in New York. Day-to-day work spans C#/.NET (or Java) services, distributed messaging, MongoDB, FIX protocol, and identity/authentication, with observability via Datadog/Elasticsearch and occasional React frontend work.
The Financial Services Company is seeking a Backend Engineer to design scalable, high-performance backend systems in a capital markets setting. You will drive technical direction and collaborate across teams to deliver reliable services using C#/.NET or Java.
Requirements include distributed messaging, NoSQL (MongoDB), FIX protocol, and identity/authentication frameworks. You will work with observability tools like Datadog/Elasticsearch and contribute to frontend work with React where applicable.