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Junior Mainframe Programmer Jobs in Washington (NOW HIRING)

TechWish

Senior Java Developer

Sterling, VA · On-site

$57 - $72.50/hr

... mainframes that queries and retrieves data using SQL, JNDI, JDBC template and through Object ... junior/mid-level developers. • All other duties as assigned or directed. Qualifications

TransUnion

Lead Data Scientist

Reston, VA · On-site

$100K - $160K/yr

You will provide mentorship and training to junior colleagues and maintain progress on all ... Advanced programming skills; mastery of a statistical language such as R or SAS; experience using ...

Transunion

Lead Data Scientist

Reston, VA · On-site

$100K - $160K/yr

You will provide mentorship and training to junior colleagues and maintain progress on all ... Advanced programming skills; mastery of a statistical language such as R or SAS; experience using ...

Trans Union LLC

Lead Data Scientist

Reston, VA · On-site

$100K - $160K/yr

You will provide mentorship and training to junior colleagues and maintain progress on all ... Advanced programming skills; mastery of a statistical language such as R or SAS; experience using ...

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Junior Mainframe Programmer information

What is a junior mainframe programmer?

Junior Mainframe Programmers are entry-level professionals who work with mainframe computer systems, typically maintaining, developing, and troubleshooting software written in languages like COBOL, JCL, or Assembler. They assist in supporting legacy systems that handle large-scale data processing tasks for industries such as banking, insurance, and government. Their responsibilities often include coding, debugging, running batch jobs, and ensuring that mainframe applications run smoothly under the supervision of senior programmers.

What are the typical responsibilities of a junior mainframe programmer in their first year on the job?

In their first year, a Junior Mainframe Programmer is usually responsible for maintaining and updating existing mainframe applications, assisting with coding tasks, debugging programs, and performing routine batch processing operations. They often work under the guidance of senior programmers and participate in code reviews, documentation, and testing activities. Collaboration with analysts, QA testers, and other IT professionals is common to ensure program changes meet requirements and function smoothly in the production environment.

What are the key skills and qualifications needed to thrive as a junior mainframe programmer, and why are they important?

To thrive as a Junior Mainframe Programmer, you need a solid understanding of programming languages like COBOL, JCL, and SQL, often supported by a degree in computer science or related field. Familiarity with IBM mainframe environments, version control systems, and database management tools is crucial for daily tasks. Attention to detail, problem-solving skills, and the ability to learn quickly help you adapt to legacy systems and collaborate with senior developers. These skills are essential to ensure reliable system maintenance, effective troubleshooting, and smooth integration within enterprise IT teams.

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Junior Mainframe Programmer jobs near you

Principal Enterprise Architect - Estimation Systems

Expert Technology Services

Washington, DC • On-site

Contractor

Posted 17 days ago

Job description

Job Summary (Principal Enterprise Architect – Estimation Systems):
- Serve as the lead technical authority for advanced estimation system R&D, design, and evolution for a major rail transportation client.
- Architect scalable, high-accuracy estimation platforms using event-driven microservices, real-time data processing, and distributed systems.
- Drive R&D initiatives applying advanced mathematics, statistics, optimization, and physics-based simulation models.
- Establish and enforce enterprise architecture standards (TOGAF, BizBOK, DAMA-DMBOK) within a SAFe (Scaled Agile) environment.
- Lead modernization efforts, bridging legacy mainframe systems with cloud-native technology stacks (Java, Spring Boot).
- Design and deliver integrated solutions across operational, planning, and financial domains.
- Act as primary technical advisor to senior business and engineering leaders; translate complex requirements into actionable architecture roadmaps.
- Mentor and guide junior architects and engineers within cross-functional teams.
- Ensure alignment of solutions with enterprise-wide standards and governance frameworks.
- Support large-scale legacy-to-modernization transformations and technology migrations.