Engineer II

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

Job summary

Intercontinental Exchange (ICE) in Jacksonville, FL is seeking an experienced Software Developer (Level 2) to design and build modern web applications using C#/.NET for backend services and React for the frontend. You will own features, write unit tests, and contribute to RESTful APIs while using Claude to accelerate development.

You will collaborate with cross-functional teams, troubleshoot issues, participate in code reviews, and stay current with AI/LLM capabilities relevant to the stack.

Qualifications

• Bachelor's degree or equivalent experience.
• 2–4+ years of professional software development experience.
• Strong knowledge of C# and the .NET ecosystem.
• Experience with React and TypeScript.
• Proficiency with SQL and relational databases.

Responsibilities

• Design, develop, and maintain web applications using C# and .NET for backend services and React for frontend development.
• Implement new features and enhancements to existing functionality with moderate guidance.
• Write clean, efficient, and maintainable code following best practices and team standards.
• Create and maintain RESTful APIs and integrate them with React-based frontends.
• Leverage Claude as a core development tool to accelerate workflows including code generation, documentation, and code review assistance.
• Collaborate with cross-functional teams to understand requirements and deliver solutions.
• Troubleshoot, debug, and resolve technical issues in both backend and frontend systems, using AI-assisted tools to diagnose and resolve issues faster.
• Participate in code reviews, providing and receiving constructive feedback.
• Write and maintain unit tests to ensure code quality and functionality, including AI-assisted test generation and coverage analysis.
• Contribute to database design and development using SQL.
• Stay current with relevant technologies, frameworks, and emerging AI/LLM capabilities relevant to the team's stack.
• Provide occasional guidance to junior developers, including sharing effective AI-assisted development practices.

Skills

C#

.NET

React

TypeScript

SQL

Web security

Git

Agile

AI-assisted development

Problem solving

Education

Bachelor's degree in Computer Science or related

Tools

ASP.NET Core

Claude

Docker

Azure DevOps

Git

Job description

Job Purpose

We are seeking an experienced Software Developer (Level 2) to join our innovative development team. In this role, you will contribute to the design and development of our applications while taking ownership of specific components and features. You will work in an AI-forward engineering culture, leveraging tools like Claude to accelerate development, improve code quality, and solve complex problems more effectively.

Responsibilities

• Design, develop, and maintain web applications using C# and .NET for backend services and React for frontend development

• Implement new features and enhancements to existing functionality with moderate guidance

• Write clean, efficient, and maintainable code following best practices and team standards

• Create and maintain RESTful APIs and integrate them with React-based frontends

• Leverage Claude as a core development tool to accelerate workflows including code generation, documentation, and code review assistance

• Collaborate with cross-functional teams to understand requirements and deliver solutions

• Troubleshoot, debug, and resolve technical issues in both backend and frontend systems, using AI-assisted tools to diagnose and resolve issues faster

• Participate in code reviews, providing and receiving constructive feedback

• Write and maintain unit tests to ensure code quality and functionality, including AI-assisted test generation and coverage analysis

• Contribute to database design and development using SQL

• Stay current with relevant technologies, frameworks, and emerging AI/LLM capabilities relevant to the team's stack

• Provide occasional guidance to junior developers, including sharing effective AI-assisted development practices

Knowledge and Experience

• Bachelor's degree in Computer Science, Software Engineering, or related field (or equivalent experience)

• 2–4+ years of professional software development experience

• Strong knowledge of C# and the .NET ecosystem (e.g., .NET Core, ASP.NET Core)

• Experience with React and its ecosystem (hooks, state management)

• Proficiency with modern JavaScript (ES6+) and TypeScript

• Experience with SQL and relational database concepts

• Understanding of web application security principles

• Experience with version control systems (Git)

• Familiarity with Agile development methodologies

• Strong problem-solving skills and attention to detail

• Excellent communication and collaboration abilities

• Comfort using Claude as a daily development tool for tasks such as code generation, debugging assistance, and documentation

Preferred Knowledge and Experience

• Experience with CI/CD pipelines (e.g., Azure DevOps, GitHub Actions)

• Knowledge of containerization concepts (Docker)

• Experience with AWS

• Experience with Java or Spring Boot as a secondary backend language

• Familiarity with microservices architecture

• Experience with automated testing frameworks

• Understanding of responsive design and accessibility standards

• Knowledge of performance optimization techniques

• Experience using Claude effectively across the software development lifecycle, from design through testing and deployment

• Familiarity with getting the most out of Claude through clear prompting and understanding its strengths and limitations in a dev context

Intercontinental Exchange, Inc. is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to legally protected characteristics.