Assembly Language Developer

SAIC; Ashburn (VA); Remote; USD 80,000 - 120,000; Full time

Job summary

SAIC is seeking a highly experienced Assembly Language Developer with deep expertise in IBM z/OS mainframe environments. The candidate will play a crucial role in legacy system modernization, extracting business rules from assembly code, and collaborating with cross-functional teams for accurate migration.

Qualifications

• 5 years of experience with architectural frameworks and application design.
• Active IRS MBI Clearance.
• Familiarity with job control processing and JCL.

Responsibilities

• Analyze, maintain, and enhance legacy code written in IBM z/OS assembly language.
• Extract business rules from existing assembly code and assist in code conversion efforts.
• Collaborate with cross-functional teams to ensure accurate interpretation and migration of legacy logic.

Skills

IBM z/OS assembly language

Data manipulation techniques

Java programming

Education

Bachelor's degree

Tools

CA Endevor

BMC Control-M

Job description

Job ID: 2506946
Location: REMOTE WORK, VA, United States
Date Posted: Jun 26, 2025
Category: Software
Subcategory: SW Engineer
Schedule: Full-time
Shift: Day Job
Travel: No
Minimum Clearance Required: Public Trust
Clearance Level Must Be Able to Obtain: None
Potential for Remote Work: Remote
Benefits: Click here

SAIC is seeking a highly experienced Assembly Language Developer with deep expertise in IBM z/OS mainframe environments, IRS Core Record Layouts (CRL), and legacy system modernization. The ideal candidate will support the extraction of business rules from legacy code, assist in code conversion to modern platforms, and work with mission-critical IRS systems such as the Individual Master File (IMF) and Business Master File (BMF). Key responsibilities include:

• Analyze, maintain, and enhance legacy code written in IBM z/OS assembly language.
• Extract business rules from existing assembly code and assist in code conversion efforts.
• Work with IRS Core Record Layouts (CRL) and QSAM data formats to support data processing and transformation.
• Collaborate with cross-functional teams to ensure accurate interpretation and migration of legacy logic.
• Utilize CA Endevor Software Change Manager (SCM) for version control, release management, and secure code handling.
• Leverage BMC Control-M for job scheduling, workflow automation, and monitoring batch job execution.

Qualifications

Required:

• BS and 5 years of experience with architectural frameworks and application design.
• Active IRS MBI Clearance.
• In-depth knowledge of IBM z/OS assembly language, including:
• Assembly instructions, addressing modes, and data manipulation techniques.
• Job control processing and JCL.
• Familiarity with IBM mainframe architecture, including:
• System calls (SVCs) and interrupt handling.
• Experience with IRS Core Record Layouts (CRL) and QSAM/VSAM data formats (highly desirable).
• Experience with IRS IMF or BMF systems (highly desirable).
• Proficiency with CA Endevor SCM for secure and controlled software development lifecycle management.
• Experience with BMC Control-M for job automation and workflow orchestration.
• Strong understanding of mainframe development tools, including debuggers, assemblers, linkers, and utilities.
• Familiarity with DB2 and other legacy data storage formats.
• Understanding of Java programming, including:
• Object-oriented principles, syntax, libraries, and frameworks.
• Ability to map assembly logic to Java constructs (loops, conditionals, functions, design patterns).

Job Description

Description

SAIC is seeking a highly experienced Assembly Language Developer with deep expertise in IBM z/OS mainframe environments, IRS Core Record Layouts (CRL), and legacy system modernization. The ideal candidate will support the extraction of business rules from legacy code, assist in code conversion to modern platforms, and work with mission-critical IRS systems such as the Individual Master File (IMF) and Business Master File (BMF). Key responsibilities include:

• Analyze, maintain, and enhance legacy code written in IBM z/OS assembly language.
• Extract business rules from existing assembly code and assist in code conversion efforts.
• Work with IRS Core Record Layouts (CRL) and QSAM data formats to support data processing and transformation.
• Collaborate with cross-functional teams to ensure accurate interpretation and migration of legacy logic.
• Utilize CA Endevor Software Change Manager (SCM) for version control, release management, and secure code handling.
• Leverage BMC Control-M for job scheduling, workflow automation, and monitoring batch job execution.

Qualifications

Required:

• BS and 5 years of experience with architectural frameworks and application design.
• Active IRS MBI Clearance.
• In-depth knowledge of IBM z/OS assembly language, including:
• Assembly instructions, addressing modes, and data manipulation techniques.
• Job control processing and JCL.
• Familiarity with IBM mainframe architecture, including:
• Storage hierarchy (registers, memory, I/O).
• System calls (SVCs) and interrupt handling.
• Experience with IRS Core Record Layouts (CRL) and QSAM/VSAM data formats (highly desirable).
• Experience with IRS IMF or BMF systems (highly desirable).
• Proficiency with CA Endevor SCM for secure and controlled software development lifecycle management.
• Experience with BMC Control-M for job automation and workflow orchestration.
• Strong understanding of mainframe development tools, including debuggers, assemblers, linkers, and utilities.
• Familiarity with DB2 and other legacy data storage formats.
• Understanding of Java programming, including:
• Object-oriented principles, syntax, libraries, and frameworks.
• Ability to map assembly logic to Java constructs (loops, conditionals, functions, design patterns).

Target salary range: $80,001 - $120,000. The estimate displayed represents the typical salary range for this position based on experience and other factors.

Overview

SAIC accepts applications on an ongoing basis and there is no deadline.

SAIC is a premier Fortune 500 mission integrator focused on advancing the power of technology and innovation to serve and protect our world. Our robust portfolio of offerings across the defense, space, civilian and intelligence markets includes secure high-end solutions in mission IT, enterprise IT, engineering services and professional services. We integrate emerging technology, rapidly and securely, into mission critical operations that modernize and enable critical national imperatives.

We are approximately 24,000 strong; driven by mission, united by purpose, and inspired by opportunities. SAIC is an Equal Opportunity Employer. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $7.5 billion. For more information, visit saic.com . For ongoing news, please visit our newsroom .

Please apply through the internal career site here >