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Mainframe Application Support Engineer

Dexian DISYS
United States, Georgia, Alpharetta
Oct 10, 2025
Mainframe Application Support Engineer
Job details
Posted

10 October 2025
Location

Alpharetta, GA
Job type

Permanent
Reference

981882
Job description

Job Summary:

Dexian is seeking a Software Development Engineer II - (Mainframe Application Support Engineer) for an opportunity with a client located in Alpharetta, GA.

Responsibilities:



  • Collaborate with architects, software engineers, business systems analysts and testing engineers to delivery high quality solutions in the financial treasury space
  • Responsible for coding, testing, and implementing application enhancements meeting defined scope, target dates and budgets with minimal or no defects
  • Maintain and support critical payment processing applications of high complexity in the Mainframe environment by providing rotational 24O7 support which includes responding to incidents alerts in a timely matter according to various priorities
  • Develop programs to transfer and/or convert client data including file transmission set-up services
  • Develop processes and procedures to improve time to resolution and the efficiency of the support team
  • Participate in operational readiness key performance initiatives and measure the effectiveness of both production releases and client on-boarding activities
  • Participate in disaster recovery and business continuity exercises
  • Collaborate with the cross functional teams to correct recurring issues
  • Provide clear verbal and written communication to internal and external groups
  • Develop and maintain strong working relationships and strategic partnerships with key stakeholders/customers across the organization to maximize operational support effectiveness
    The above statements are intended only to describe the general nature of the job and should not be construed as an all-inclusive list of position responsibilities


Requirements:



  • Bachelor's degree in information technology, computer science or other applicable field(s) of study
  • In lieu of degree, a minimum of 5 years of experience in production operational support
  • Equivalent combination of education and experience is also acceptable
    Job Related Experience:
  • Minimum 5 years of experience in Mainframe application development using COBOL, JCL, CA7, VSAM and DB2, MQ and other IBM utilities
  • Minimum 5 years of experience in file transmission protocols and tools - Connect: Direct (NDM), SFTP, IBM Sterling File Gateway
  • 5+ years driving ITIL best practice techniques for service operations including but not limited to root cause analysis, problem, change, and incident management
  • 5+ years of relevant experience in a payments or other high transaction volume systems
  • Well versed with all phases of Software Development Life Cycle (SDLC) and Agile Scrum methodologies
  • Role requires strong technical knowledge across the entire technology stack but is mainly based on Mainframe
  • Deep understanding of troubleshooting methodology
  • Exceptional communication skills (verbal and written)
  • Ability to work across multiple teams in a matrixed environment to accomplish objectives
  • Strong organizational skills with experience working a dynamic work environment and managing multiple projects simultaneously
  • Ability to easily adapt and manage changing priorities


Preferred Qualifications:



  • ACH Processing
  • File Creation and Transmission
  • Experience with products and services - PEP+ and ARP/SMS
  • Experience with Service Now
  • ITIL experience or certification
  • Experience with industry standard monitoring tools (Splunk, Dynatrace, TSOView, MainView)


Dexian is a leading provider of staffing, IT, and workforce solutions with over 12,000 employees and 70 locations worldwide. As one of the largest IT staffing companies and the 2nd largest minority-owned staffing company in the U.S., Dexian was formed in 2023 through the merger of DISYS and Signature Consultants. Combining the best elements of its core companies, Dexian's platform connects talent, technology, and organizations to produce game-changing results that help everyone achieve their ambitions and goals.

Dexian's brands include Dexian DISYS, Dexian Signature Consultants, Dexian Government Solutions, Dexian Talent Development and Dexian IT Solutions. Visit https://dexian.com/ to learn more.

Dexian is an Equal Opportunity Employer that recruits and hires qualified candidates without regard to race, religion, sex, sexual orientation, gender identity, age, national origin, ancestry, citizenship, disability, or veteran status.


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