Staff Software Engineer — Real-Time Trading Platform

Topstep LLC; United States; Hybrid; USD 200,000 - 250,000; Full time

Benefits offered by this job

Remote/hybrid work

Company-paid holidays

401(k) matching

Health, dental, and vision insurance

Job summary

Topstep LLC is seeking a Staff Software Engineer to lead the architecture of our real-time trading platform, focusing on high-throughput .NET services and cloud-native workloads. You will own end-to-end system design, reliability, and cross-team collaboration.

You’ll mentor engineers, drive engineering standards, and contribute across the stack, including React/TypeScript frontend. AWS, Docker and Kubernetes experience is preferred for scalable fintech delivery.

Qualifications

• 8+ years of software engineering experience building and shipping production systems at scale.
• Deep proficiency in C# and the .NET ecosystem, with a track record of designing production services used across multiple teams.
• Experience designing service boundaries and API versioning in a microservices or modular architecture.
• Extensive experience building distributed, high-availability systems, including asynchronous, event-driven communication between services.

Responsibilities

• Design and build services and APIs that power core trading platform capabilities.
• Own initiatives end-to-end, from technical design through production deployment, monitoring, and iteration.
• Collaborate with product and design to translate user needs into scalable, maintainable technical solutions.
• Contribute to system architecture decisions, establishing patterns and practices that other teams can follow.
• Write clean, well-tested code with strong focus on reliability, performance, and operational excellence.
• Participate in on-call rotations, respond to incidents, and drive continuous improvement of system reliability.
• Build and maintain observability into your systems through metrics, logging, and distributed tracing.
• Occasionally work across the stack, contributing to the React/TypeScript frontend as features require.
• Mentor engineers through code reviews, pairing sessions, and sharing knowledge about system design and best practices.
• Balance technical debt against feature delivery, making thoughtful trade-offs based on business priorities and technical constraints.
• Strengthen engineering culture through documentation, tooling improvements, and process refinements.

Skills

C#/.NET

Distributed systems

Problem solving

Mentoring

Communication skills

Education

Bachelor's degree in Computer Science or equivalent

Tools

Docker

AWS

Kubernetes (EKS)

React/TypeScript

Job description

Topstep LLC is seeking a Staff Software Engineer to lead the architecture of our real-time trading platform, focusing on high-throughput .NET services and cloud-native workloads. You will own end-to-end system design, reliability, and cross-team collaboration.

You’ll mentor engineers, drive engineering standards, and contribute across the stack, including React/TypeScript frontend. AWS, Docker and Kubernetes experience is preferred for scalable fintech delivery.