Senior Back End Developer

Job Summary We are looking for a skilled Senior Backend Developer to design and implement user experiences for job seekers and recruiters on our flagship - Duruper.com. You will manage the user operating environment, develop database structures, and oversee infrastructure in the AWS environment.

Roles and Responsibilities

• Design and develop backend systems for Duruper.com and internal platforms
• Improve system architecture with a focus on scalability, reliability, and maintainability
• Solve complex technical problems and optimize system performance
• Contribute to code quality and consistency through thoughtful and in-depth code reviews
• Refactor existing codebases and reduce technical debt
• Collaborate closely with product managers, designers, and frontend engineers
• Leverage AI development tools (e.g., Claude Code, ChatGPT) to improve development efficiency
• Support junior engineers through technical guidance and contribute to raising the overall engineering quality of the team

Mandatory Requirements

• 5–10 years of backend development experience
• Strong proficiency in Java 21, Spring Boot 3, and JPA/Hibernate
• Solid experience in system design and problem-solving in complex environments
• Strong code quality standards and the ability to provide meaningful feedback through code reviews
• Experience with PostgreSQL, including data modeling and performance optimization
• Hands-on experience using AI-assisted development tools (e.g., Claude Code, ChatGPT) in real-world workflows
• Ability to take ownership of problems and drive them to resolution independently.

Preferred Qualifications

• Experience working on high-traffic or complex domain services
• Experience with large-scale refactoring or legacy system improvements
• Experience improving developer productivity through tooling or automation
• Ability to clearly communicate technical decisions and trade-offs in a collaborative environment