Principal Software Engineer - Real-Time Full-Stack

cboe; Chicago (IL); On-site; USD 140,000 - 190,000; Full time

Job summary

Cboe Global Markets is seeking a Principal Software Engineer to own full-stack development across real-time financial analytics platforms. You will architect ReactJS front-ends, C#/.NET back-end services, and a WPF client, delivering integrated, well-tested software across Silexx, LiveVol and DataShop.

You will lead integration and end-to-end testing strategies, mentor engineers, and collaborate with product teams while leveraging AI coding assistants to accelerate delivery and quality across

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or a related STEM field.
• 10+ years of hands-on experience in professional full-stack development, including modern web technologies and back-end services.
• Demonstrated experience designing and leading integration and end-to-end test strategy for complex, multi-component systems.
• Strong OOP skills, experience with design patterns, and a solid grounding in computer science fundamentals.
• Experience mentoring engineers and providing technical leadership across teams.
• Hands-on experience using AI coding assistants (e.g., Claude) in a professional setting.

Responsibilities

• Serve as the subject-matter expert for integration and end-to-end testing, working across the Silexx, LiveVol, and DataShop teams to define and refine how we validate workflows that span the front-end, APIs, and back-end services.
• Lead the design, architecture, and implementation of modern full-stack applications using ReactJS front-ends and C#/.NET back-end services.
• Build and maintain automated integration, contract, and end-to-end test suites that exercise REST, gRPC, and real-time streaming interfaces across products, and wire them into CI/CD pipelines as release gates.
• Leverage AI coding assistants such as Claude across the SDLC - for test generation, code review, refactoring, and agentic automation - and help establish team practices and guardrails for AI-augmented development.
• Collaborate with product management and cross-functional teams across products to understand requirements and deliver integrated, high-quality solutions.
• Implement secure server communications and authentication/authorization using RESTful and streaming protocols, OpenID Connect, and OAuth 2.0.
• Drive technical decisions, provide architectural direction for growth into new asset classes and products, and mentor engineers across teams.
• Diagnose and resolve complex, cross-product technical problems spanning the UI, API, and back-end layers.

Skills

Full-stack engineering

ReactJS

C#/.NET

WPF

Real-time UI

AI collaboration (Claude)

Mentoring

Education

Bachelor's degree in Computer Science or related STEM

Tools

CI/CD pipelines

REST

gRPC

Claude AI assistant

Job description

Cboe Global Markets is seeking a Principal Software Engineer to own full-stack development across real-time financial analytics platforms. You will architect ReactJS front-ends, C#/.NET back-end services, and a WPF client, delivering integrated, well-tested software across Silexx, LiveVol and DataShop.

You will lead integration and end-to-end testing strategies, mentor engineers, and collaborate with product teams while leveraging AI coding assistants to accelerate delivery and quality across