Description Position Summary  The Sr. Systems Engineer is a senior technical contributor responsible for the design, development, integration, and maintenance of enterprise systems. This role collaborates closely with business stakeholders and engineering teams to ensure system solutions align with project objectives and enterprise standards. The BSE also mentors junior staff, contributes to architectural planning, and drives the best practices in software development. Essential Job Functions The Business System Engineer (BSE) is a senior technical contributor responsible for the design, development, integration, and maintenance of enterprise systems. This role collaborates closely with business stakeholders and engineering teams to ensure system solutions align with project objectives and enterprise standards. The JBSE also mentors junior staff, contributes to architectural planning, and drives best practices in software development. Analyze business requirements and translate them into technical designs and scalable solutions. Lead and contribute to system architecture, design, and development of complex enterprise applications. Participate in project planning, including effort estimation, resource allocation, and milestone tracking. Develop and maintain system documentation and support production issues as needed. Conduct code reviews, support code migrations, and enforce adherence to development standards. Plan and support maintenance windows, system SLAs, metrics, and monitoring. Collaborate across teams to ensure quality, performance, and availability of mission-critical applications. Provide technical mentorship to less experienced engineers. Position Requirements Programming & Frameworks: Advanced proficiency in Java Expertise in Spring Boot, Spring Cloud, Spring WebFlux, and Java EE Experience in reactive programming models Database & Data Management: Strong experience with SQL and relational databases such as Oracle, MySQL, or PostgreSQL Front-End Technologies: Solid understanding of HTML, CSS, JavaScript Experience with React or similar frameworks Design and implementation of RESTful and SOAP APIs Familiarity with API management tools like Apigee Knowledge of Kafka or RabbitMQ for real-time data processing Experience with cloud platforms: AWS, Azure, or Google Cloud Containerization with Docker and orchestration with Kubernetes CI/CD pipeline configuration using GitLab CI or similar tools Application deployment on servers like Apache Tomcat Preferred Bachelor’s degree in computer science, Engineering, or a related field. Strong understanding of scalable system architecture and design principles Experience with microservices architecture is a plus Credit One Bank, N.A. is a data-driven financial services company based in Las Vegas. Founded in 1984, Credit One Bank offers a spectrum of credit card products for people in all stages of financial life. Credit One Bank is an equal opportunity employer committed to diversity and inclusion and does not discriminate against any employee or applicant for employment because of age, race, religion, color, disability, sex, sexual orientation, or national origin. Reasonable accommodations can be made for those who require them, including access to job applications and workplace accommodations. Employment at Credit One Bank is based on mutual consent (also known as at-will). This means that employees and the Bank may terminate the employment relationship at any time, with or without cause and with or without notice. Please contact the recruiter for this position to learn more. Credit One Bank does not accept unsolicited resumes from agencies and is not responsible for related fees.