Staff C# .NET Engineer, API & Microservices

StoneX Group Inc.; Birmingham (AL); On-site; USD 120,000 - 180,000; Full time

Job summary

StoneX Group Inc. in Birmingham, AL is seeking a Staff Software Engineer to join the API & Middleware Group, building scalable, low-latency services for the organization's distributed systems.

You will collaborate with experienced engineers, tech leads, and QA professionals to shape architecture, implementation, and operations, while emphasizing ownership and reliability across the platform.

Qualifications

• 3+ years building distributed C#/.NET systems.
• Experience with .NET Core / ASP.NET Core.
• Experience with event-driven architectures (Kafka).
• Strong SQL with relational databases; NoSQL exposure a plus.
• Experience in containerized, cloud environments (Azure).
• Ownership mindset and cross-team collaboration.

Responsibilities

• Contribute across all phases of the SDLC in an Agile team.
• Write well-designed, testable, efficient code.
• Troubleshoot live production and performance issues.
• Participate in code reviews and collaborate with stakeholders.
• Work with team leads and partner teams across the organization.

Skills

C# / .NET

ASP.NET Core

Distributed systems

Kafka

SQL

NoSQL

Azure

Docker

Kubernetes

Performance tuning

Education

Bachelor's degree in Computer Science or related field

Tools

GitHub

Visual Studio

VS Code

Rider

ReSharper

Job description

StoneX Group Inc. in Birmingham, AL is seeking a Staff Software Engineer to join the API & Middleware Group, building scalable, low-latency services for the organization's distributed systems.

You will collaborate with experienced engineers, tech leads, and QA professionals to shape architecture, implementation, and operations, while emphasizing ownership and reliability across the platform.