Sr Systems Engineer

Senior Systems EngineerPowering the world's payments ecosystem – globally, and you power ACI. You'll innovate, collaborate, and grow – in an energetic technology culture with decades of proven success. ACIers – in all roles and levels – are truly your colleagues and many are your friends. Our size and reach allow you to see the global impact of your work. You are visible, your talents are valued, and you are empowered to shape the future of payments.As a Senior Systems Engineer in Norcross, GA or Omaha, NE, you will join a diverse, passionate team, dedicated to powering the world's payments ecosystem!Position Summary:We are seeking a highly skilled and motivated Senior Systems Engineer to support and enhance our enterprise payment systems. The ideal candidate will have hands-on experience with IBM WebSphere, COBOL, AIX, Linux, and the MTS payments platform, and will be responsible for maintaining application stability, implementing enhancements, and collaborating with cross-functional teams to deliver high-quality solutions.Key Responsibilities:Support, maintain, and enhance applications running on the MTS payments platform.Develop and troubleshoot COBOL programs and batch jobs in a high-volume transaction environment.Manage and deploy applications using IBM WebSphere Application Server.Perform system administration tasks on AIX and Linux servers related to application support.Collaborate with infrastructure, security, and development teams to ensure system reliability and compliance.Participate in incident management and root cause analysis for production issues.Document technical processes, configurations, and procedures.Assist in planning and executing application upgrades and migrations.Monitor application performance and implement tuning strategies.Required Qualifications:Bachelor's degree in Computer Science, Information Systems, or related field (or equivalent experience).5+ years of experience in application engineering or software development.Strong proficiency in COBOL and experience with legacy systems.Hands-on experience with IBM WebSphere Application Server.Solid understanding of AIX and Linux operating systems.Experience working with the MTS payments platform or similar transaction processing systems.Familiarity with scripting languages (e.g., Shell, Perl) and job scheduling tools.Strong problem-solving and analytical skills.Excellent communication and collaboration abilities.Preferred Qualifications:Experience in financial services or payment processing environments.Knowledge of DevOps practices and CI/CD pipelines.Familiarity with ITIL processes and service management tools.Applicants must be currently authorized to work in the United States on a full-time basis. This position does not offer sponsorship for employment visa status or work permit now or in the future.In return for your expertise, we offer opportunities for growth, career development, and a competitive compensation and benefits package—all within an innovative and collaborative work environment.ACI Worldwide is an AA/EEO employer in the United States, which includes providing equal opportunity for protected veterans and individuals with disabilities, and an EEO employer globally.Important Notice About Recruitment Scams Job seekers should be aware of ongoing recruitment scams where individuals or organizations impersonate legitimate companies to offer fake job opportunities. These scams often involve requests for personal information, payments, or interviews through unofficial channels. Please be cautious and verify any communications claiming to be from our company ( / @aciworldwide.com). The ACI Worldwide recruitment team will always follow official channels and will never request payment.