Job Summary:
Waystar is a company that provides innovative healthcare payment solutions. The Senior Software Engineer will design and develop complex Java-based enterprise applications, build and maintain RESTful APIs, and collaborate with cross-functional teams to deliver high-performance solutions.
Responsibilities:
• Design, architect, and develop complex Java‑based enterprise applications
• Build and maintain RESTful APIs, business logic, and integration components
• Review code to ensure quality, security, and adherence to engineering standards
• Partner with cross‑functional teams to translate business requirements into technical solutions
• Troubleshoot and resolve defects, performance issues, and production incidents
• Refactor and modernize legacy systems to improve scalability, reliability, and maintainability
• Contribute to technical designs, documentation, and architectural decisions
• Support deployment and release activities in collaboration with QA and Product teams
• Evaluate emerging technologies and industry trends to improve engineering practices
• Estimate work, track progress, and provide clear status updates using internal tools
• Mentor junior engineers and promote a culture of learning, feedback, and craftsmanship
Qualifications:
Required:
• Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience)
• 5+ years of professional Java development experience
• Strong expertise in Java 8+, Spring / Spring Boot, and Hibernate / JPA
• Solid understanding of object-oriented design, design patterns, and software architecture
• Experience designing and implementing RESTful APIs
• Hands-on experience with SQL databases (e.g., PostgreSQL, MySQL, or SQL Server), including performance tuning
• Proficiency with unit testing frameworks such as JUnit and Mockito; TDD experience preferred
• Familiarity with Git and modern version control workflows
• Ability to work effectively in an agile, fast-paced environment—both independently and collaboratively
• Strong written and verbal communication skills
• Proven ability to solve complex problems with pragmatic, maintainable solutions
Preferred:
• TDD experience preferred
Company:
Waystar is a technology platform that provides healthcare revenue cycle management solutions. Founded in 2017, the company is headquartered in Louisville, USA, with a team of 1001-5000 employees. The company is currently Late Stage.