Demo

Software Engineer II (Indy)

Apex Systems
Indianapolis, IN Full Time
POSTED ON 1/9/2026
AVAILABLE BEFORE 2/7/2026
Job#: 3017296

Job Description:

For direct inquiries, please send resumes to [email protected]

Onsite in Indianapolis

Overview:

Apex Systems is seeking an experienced Mainframe Programmer/Designer to support a mission‑critical payroll application within a high‑visibility federal program. This role requires strong COBOL and IDMS expertise, along with experience designing, developing, and maintaining mainframe applications in an enterprise environment. The selected candidate will join the Design Team supporting the DFAS initiative and will collaborate across multidisciplinary teams to enhance and modernize core systems.

The ideal candidate is detail‑oriented, analytical, and capable of working both independently and as part of a structured project team. Experience with ADSO and exposure to Agile methodologies is a strong plus.

Key Responsibilities:

  • Research, design, develop, document, test, and debug mainframe applications and systems.
  • Collaborate with systems analysts, programmers, hardware engineers, and cross‑functional teams to design and improve system architecture.
  • Analyze user needs and software requirements to determine technical feasibility, design approach, and cost/time constraints.
  • Modify and maintain existing databases and database management systems.
  • Write and code logical and physical database descriptions, and guide others in database coding as needed.
  • Develop compilers, utilities, and operating instructions to support mainframe operations.
  • Conduct multidisciplinary research to support design and performance improvements.
  • Coordinate software installations and monitor equipment functionality to ensure requirements and specifications are met.
  • Troubleshoot technical issues, perform system changes, and ensure compliance with software standards and best practices.
  • Support project planning activities, define scope and limitations, and participate in technical reviews.

Qualifications

Education & Experience:

  • Bachelor’s degree in Computer Science, Software Engineering, or a related field required.
  • 2–4 years of professional software engineering or mainframe application development experience.

Technical Skills:

  • Strong experience with COBOL in a mainframe environment.
  • Required experience with IDMS.
  • Experience with ADSO is a plus.
  • Understanding of Agile development methodologies.
  • Knowledge of the full Software Development Lifecycle (SDLC).
  • Ability to troubleshoot application issues and implement system improvements.
  • Working knowledge of computer hardware/software fundamentals.
  • Familiarity with development tools/languages such as SQL, Visual Basic, or similar technologies.

Soft Skills:

  • Strong verbal and written communication abilities.
  • Solid problem‑solving skills and ability to work under general supervision.
  • Strong customer‑service mindset and interpersonal skills.
  • Ability to manage time effectively and work independently when needed.

Additional Requirements:

  • Must be a U.S. Citizen
  • Must be able to obtain and maintain Public trust
  • No dual citizenship

EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at [email protected] or 844-463-6178.

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details.

Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6 months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Apex team member can provide.

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details.

Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6 months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Apex team member can provide.

Apex Systems is part of the Commercial Segment of ASGN Incorporated.

NYSE: ASGN

4400 Cox Road

Suite 200

Glen Allen, Virginia 23060

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Benefits Department at [email protected] or 804-523-8228. (Do not submit resumes or solicit consultants to this email address). UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Apex Systems.

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