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Application Developer II

Cass Information Systems
United States, Missouri, Bridgeton
Jan 19, 2026
Description

The Application Developer II is responsible for the development and deployment of technology to meet the needs and requirements of Cass. This position will handle fixing system bugs of simple to medium complexity and will develop system enhancements or assist others on larger more complex enhancements.

PRINCIPAL RESPONSIBILITIES AND DUTIES:



  • Participates in the planning, design, and implementation effort as assigned by the business or IT management.
  • Develops and maintains modules based on technical designs and development standards.
  • Remediates production bugs/defects as assigned.
  • Supports quality assurance testing to confirm that acceptance criteria are met.
  • Recommends changes to the processes, techniques, and technology to improve product quality, work efficiency, system performance and workload balance.
  • Mentors junior development team members when needed.
  • Participates in brainstorming, discussion, and estimation sessions.
  • Performs other duties as assigned.


SKILLS AND ABILITIES REQUIRED:



  • Strong communication skills both written (technical documentation) and verbal (presentations to IT team members and other division teams).
  • Ability to multi-task while still maintaining an attention to detail.
  • Have a solid understanding of telecommunications carrier billing standards and formats.
  • Knowledge of OOP design and patterns.
  • Knowledge of Core, Web, and MVC.
  • Knowledge of Micro Services Architecture.
  • Knowledge of cloud services (Azure preferred).
  • Experience using DevOps and Agile practices.


MINIMUM LEVEL OF PREPARATION AND TRAINING NORMALLY REQUIRED:



    • Bachelor's degree in computer science or software engineering, or equivalent work experience.
    • 3-5 years of experience as a developer utilizing modern C#, Visual Studio, SQL 2012+.


    APPLICATION PROCESS:

    You can directly apply through Cass's website at https://www.cassinfo.com/careers. Please apply directly to this position via the "Apply" button. You will be required to create an account and provide your resume, contact information and other pertinent employment information. This process typically takes 20 minutes or less. Should we find that you meet the minimum requirement of the position, a member of our recruiting team will be in touch to start the interview process.

    ABOUT OUR COMPANY:
    Cass Information Systems, Inc. (NASDAQ: CASS) is a leading provider of integrated information and payment management solutions. Cass enables enterprises to achieve visibility, control and efficiency in their supply chains, communication networks, facilities, and other operations. Disbursing over $94 billion annually on behalf of its clients, and with total assets of $2.4 billion, Cass is uniquely supported by Cass Commercial Bank. Founded in 1906 and a wholly-owned subsidiary, Cass Commercial Bank provides sophisticated financial exchange services to the parent organization and its clients. Cass was recently named as one of America's best midsize companies by a leading publication and is part of the Russell 2000.

    More information is available at www.cassinfo.com.

    Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities

    This employer is required to notify all applicants of their rights pursuant to federal employment laws.
    For further information, please review the Know Your Rights notice from the Department of Labor.
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