Senior Software Engineer
financial services companyJersey City, NJ
About the role
Backend Engineer — FIX & IdentityDelray Beach, Chicago, New York, or Charlotte preferred for in-office work; remote may be considered.
JOB SUMMARY:
The Backend Engineer is responsible for designing and delivering scalable, high-performance backend systems and services within a capital markets environment. This role drives technical direction, champions engineering best practices, and collaborates across teams to build reliable, maintainable, and modern software. The ideal candidate brings deep expertise in C#/.NET (Java acceptable), hands-on experience with distributed messaging systems and NoSQL databases, and a strong foundation in ASP.NET service development. Experience with the FIX protocol and identity, authentication, and authorization systems is strongly preferred.
ESSENTIAL DUTIES AND RESPONSIBILITIES:
- Design and develop high-quality backend services using C#/.NET or Java.
- Build and maintain ASP.NET service-side applications with a focus on scalability and long-term reliability.
- Work with distributed messaging frameworks and event-driven architectures to support high-throughput trading systems.
- Develop and optimize data solutions using NoSQL databases such as MongoDB.
- Design and implement financial calculation engines, pricing models, and quantitative algorithms with a strong emphasis on accuracy and performance.
- Implement and maintain FIX protocol integrations to support electronic trading workflows.
- Design and enforce identity, authentication, and authorization solutions across backend services.
- Integrate and work with observability platforms such as Datadog or Elasticsearch to support system monitoring and diagnostics.
- Ensure numerical precision in financial computations, including proper handling of rounding, accruals, and market conventions.
- Collaborate with product, UI/UX, frontend, and DevOps teams to align on development and deployment strategy.
- Build reusable, testable backend infrastructure and uphold consistent coding standards across teams.
- Implement telemetry and monitoring best practices using Sentry or equivalent tools.
- Evaluate and adopt new technologies, frameworks, and design patterns to continuously improve engineering outcomes.
- Mentor engineers on backend development best practices and foster a culture of engineering excellence.
- Contribute to frontend solutions using React and Redux/Rematch where needed. (nice to have)
REQUIRED SKILLS & EXPERIENCE:
- 5+ years of software development experience with a strong emphasis on backend engineering.
- Strong proficiency in C#/.NET backend development.
- Proven experience designing and building APIs.
- Solid background in distributed messaging systems and event-driven architectures.
- Hands-on experience with the FIX protocol in a capital markets or electronic trading environment.
- Experience implementing identity, authentication, and authorization frameworks (e.g., OAuth2, OpenID Connect, IdentityServer).
- Experience implementing financial calculations, pricing engines, or quantitative models in a capital markets or fintech environment.
- Hands-on experience with QuantLib or similar quantitative finance libraries.
- Experience with NoSQL databases such as MongoDB.
- Familiarity with telemetry and observability tools such as Sentry, Datadog, or Elasticsearch.
- Experience building and scaling component libraries or design systems.
- Familiarity with fixed income or securities pricing concepts. (nice to have)
- Familiarity with Pulsar, Databricks, or Lakehouse architectures. (nice to have)
- Hands-on experience with SignalR or WebSocket-based systems. (nice to have)
- Strong communication skills and a proven track record of cross-functional collaboration.
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JOB OVERVIEW
Experience level
Lead
Location
Jersey City, NJ
Occupation
Software Developers
Industry
Custom Computer Programming Services
Posted
3 days ago
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