Senior Systems Engineer

ACI Worldwide

. Support, maintain, and enhance applications running on the MTS payments platform .

Posted 9/24/2026full-timeNorcross • Nebraska • United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates strong proficiency in COBOL programming and application support within high-volume transaction environments, with hands-on experience in IBM WebSphere Application Server and AIX/Linux systems administration. Capable of collaborating effectively with cross-functional teams to ensure system reliability and compliance while managing application upgrades and performance tuning.

Highest-signal resume keywords

COBOL ProgrammingIBM WebSphere Application ServerAIX Operating SystemLinux Operating SystemMTS Payments Platform

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Application EngineeringSoftware DevelopmentBatch Job ManagementScripting LanguagesJob Scheduling Tools

Soft Skills

Problem-SolvingAnalytical SkillsCommunicationCollaboration

Tools & Technologies

IBM WebSphere Application ServerAIXLinuxShell ScriptingPerl

Industry Keywords

Financial ServicesPayment ProcessingDevOps PracticesCI/CD PipelinesITIL Processes

Tech Stack

Tools & technologies

LinuxPerl

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

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
Applicants must be currently authorized to work in the United States on a full-time basis
Position does not offer sponsorship for employment visa status or work permit now or in the future
Preferred: Experience in financial services or payment processing environments
Preferred: Knowledge of DevOps practices and CI/CD pipelines
Preferred: Familiarity with ITIL processes and service management tools

Benefits

Comp & perks

Opportunities for growth
Career development
Competitive compensation and benefits package
Innovative and collaborative work environment