Senior Java Backend Developer

Job Purpose

Intercontinental Exchange, Inc. (ICE) is a global financial technology company that hosts derivative and equity trading exchanges including the New York Stock Exchange, Clearing, Data Services, Fixed Income, and Mortgage. ICE is seeking a Senior Java Backend Developer who will develop supporting middleware and APIs for our corporate public websites, associated internal applications, and emerging technologies. Application development activities include exposing RESTful web services, integrating with third-party APIs and other internal back-end systems, and working with business sponsors to translate business requirements to technical specifications.

The candidate will be working with our existing back-end team to migrate our existing applications to microservices, expose APIs to be consumed by the website and supporting applications. Our applications must be highly performant, well tested, and implement best practices so we can support and extend our codebase.  Our development team is a small yet highly productive group of professionals who thrive in an open, collaborative environment where ideas are shared and every contribution is valued. Strong written and verbal communication skills are essential — we expect team members to work independently, escalate issues proactively, and engage constructively in code reviews and feedback. When applying, be prepared to confidently answer technical questions related to the job requirements.

We are seeking a candidate that will embrace our culture and core values: Collaboration, Problem Solving, Communication, Integrity & Professionalism, and Leadership. You will be working closely with other team members to develop the best possible solutions for our customers. We are looking for a passionate individual with strong problem-solving and analytical skills, someone who pays close attention to details, enjoys working with modern programming software, and continuously evaluates new technologies.

Responsibilities

• Design, develop, and maintain scalable Java-based middleware, REST APIs, and microservices that power ICE's corporate public websites and internal applications
• Take ownership of assigned microservices and technology domains, serving as a subject matter expert and contributing architectural proposals and recommendations to the team
• Continuously evaluate emerging technologies, frameworks, build tools, and APIs to identify opportunities that simplify workflows, reduce complexity, and improve team efficiency
• Collaborate with front-end developers, business sponsors, and architects to translate business requirements into well-defined technical specifications and implementation plans
• Contribute to the ongoing migration of legacy monolithic applications to a microservices architecture deployed on containerized platforms (OpenShift/Kubernetes)
• Integrate backend services with relational databases (PostgreSQL, Oracle), external third-party APIs, caching layers (Redis), and search platforms (Elasticsearch)
• Champion test-driven development practices by writing comprehensive unit and integration tests using JUnit and Mockito, maintaining high code coverage standards
• Participate actively in code reviews, providing and receiving constructive feedback to uphold engineering best practices and consistent coding standards
• Support non-production and production environments as issues arise, taking responsibility for the health and reliability of internal and external customer-facing systems
• Monitor application performance using tools like Splunk, proactively identifying bottlenecks and driving optimization efforts
• Contribute to CI/CD pipeline improvements using Jenkins, GitHub Actions, and Gradle to support frequent, reliable deployments
• Document APIs using Swagger/OpenAPI and maintain clear technical documentation to support long-term maintainability
• Mentor junior developers and actively contribute to a collaborative, learning-oriented team culture

Knowledge and Experience

• BS or MS in Computer Science or equivalent experience
• 4+ years of experience in advanced Java development
• 3+ years of experience with Spring Boot and associated Spring technologies
• Experience with microservices development
• Strong experience with relational databases and complex SQL
• Experience with iterative/test-driven development, code refactoring, and continuous integration
• Experience building REST APIs with integration to relational databases, external APIs, and other third-party libraries
• Passionate about learning new technologies and adapting to complex and fast-moving environments
• Familiarity with AI-assisted development tools (e.g. Anthropic/Claude, GitHub Copilot, Gemini) to improve productivity and code quality

Preferred Knowledge and Experience

• Advanced AI skills using agentic providers such as Anthropic/Claude, Codex, Gemini, etc.
• Docker, Kubernetes, OpenShift
• GitHub Actions
• REST design concepts
• JUnit, Mockito
• ORMs (e.g. JPA, Hibernate, myBatis)
• PostgreSQL
• Oracle
• Swagger / OpenAPI
• Redis
• Elasticsearch
• Gradle
• IntelliJ IDEA
• Splunk