Software Engineer II: AI-Driven Web Apps & APIs

Intercontinental Exchange Holdings, Inc.; Jacksonville (FL); On-site; USD 85,000 - 120,000; Full time

Job summary

Intercontinental Exchange Holdings, Inc. is seeking an experienced Software Developer (Level 2) to contribute to the design and development of web applications.

You will own specific components, work with C#/.NET on the backend and React on the frontend, and collaborate with cross-functional teams in an AI-forward engineering culture. The role emphasizes writing clean code, RESTful APIs, and AI-assisted testing and documentation.

Qualifications

• Bachelor's degree in CS or related field.
• 2–4+ years of software development experience.
• Strong C#/.NET knowledge and React experience.
• Proficiency with ES6+ JavaScript and TypeScript.
• Experience with SQL and relational databases.
• Familiarity with Agile development and Git.
• Comfort using Claude as a daily development tool.

Responsibilities

• Design, develop, and maintain web applications using C# and .NET for backend services and React for frontend development.
• Implement new features and enhancements with moderate guidance.
• Write clean, efficient, and maintainable code following best practices.
• Create and maintain RESTful APIs and integrate them with React frontends.
• Leverage Claude to accelerate workflows including code generation and documentation.
• Collaborate with cross-functional teams to understand requirements and deliver solutions.
• Troubleshoot, debug, and resolve issues in backend and frontend using AI-assisted tools.
• Participate in code reviews and provide/receive feedback.
• Write and maintain unit tests including AI-assisted test generation and coverage analysis.
• Contribute to database design using SQL and relational concepts.
• Stay current with technologies and AI/LLM capabilities relevant to the stack.
• Provide guidance to junior developers on AI-assisted development practices.

Skills

C#

.NET

React

JavaScript/TypeScript

SQL

Git

Agile

Claude (AI)

Communication

Problem solving

Education

Bachelor's degree in Computer Science or related field

Tools

Azure DevOps

Docker

GitHub Actions

AWS

Spring Boot (nice to have)

Job description

Intercontinental Exchange Holdings, Inc. is seeking an experienced Software Developer (Level 2) to contribute to the design and development of web applications.

You will own specific components, work with C#/.NET on the backend and React on the frontend, and collaborate with cross-functional teams in an AI-forward engineering culture. The role emphasizes writing clean code, RESTful APIs, and AI-assisted testing and documentation.