Software Engineer 3 - Java / Spring Boot

Job DescriptionJob Title: Software Engineer – Java / Spring BootLocation: Irving, TX (On-site)Employment Type: Contract (W2 through ZipStaff — No C2C or 1099)About the Opportunity:ZipStaff is seeking a Software Engineer 3 (Java Developer) to build enterprise mining software for a global industrial / heavy-equipment technology organization.You will develop commercial product features inside a high-performing Scrum team — Java, Spring Boot, REST APIs, event-driven systems, and microservices. This is a mid-to-senior hands-on engineering seat, not an internship or junior coding role.What You'll Do:Design and develop software for enterprise mining / industrial product platforms.Build services using Java, Spring, and Spring Boot.Implement RESTful APIs and event-driven integrations.Work in microservices and distributed architecture.Use modern build, test, and dependency-management tooling.Design and work with modern databases.Write correct code for single- and multi-threaded environments.Participate in Scrum delivery, design discussions, and planning.Apply modern security principles in application development.Deliver production-quality features and take/give feedback within the team.Required Qualifications:5+ years of commercial Java software development (internships do not count).Strong hands-on Java, Spring, and Spring Boot.Proven experience with REST APIs and event-driven systems.Experience with microservices and distributed architecture.Commercial use of build, test, and dependency-management tools.Modern database design and technologies.Understanding of single- vs multi-threaded application requirements.Experience delivering product functionality on a Scrum team.Bachelor's degree in Computer Science.Strong analytical, design, and problem-solving skills.Ability to work on-site in Irving, TX.Must be legally authorized to work in the United States without sponsorship now or in the future.Preferred Qualifications:Mining, industrial, or other complex enterprise product software.Modern application-security practices and technologies.About ZipStaff:ZipStaff partners with leading organizations to connect skilled technology professionals with high-impact contract opportunities. We focus on quality matches and long-term success.To apply, please submit your resume highlighting commercial Java/Spring Boot, REST and event-driven services, and microservices delivery.