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Assembler Developer

Negotiable Salary

DMV IT Service

Bethesda, MD, USA

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Job Title: Assembly Language Developer Location: Bethesda, MD Employment Type: Contract About Us: DMV IT Service LLC is a trusted IT consulting firm, established in 2020. We specialize in optimizing IT infrastructure, providing expert guidance, and supporting workforce needs with top-tier staffing services. Our expertise spans system administration, cybersecurity, networking, and IT operations. We empower our clients to achieve their technology goals with a client-focused approach that includes online training and job placements, fostering long-term IT success. Job Purpose: This role focuses on analyzing, maintaining, and enhancing legacy IBM z/OS assembly language programs. You will extract critical business logic from legacy codebases and collaborate with cross-functional teams to ensure accurate code migration and modernization. You will also manage version control, release processes, and batch job automation within a highly regulated environment. Requirements Key Responsibilities: Analyze, troubleshoot, and improve legacy assembly language code on IBM z/OS platforms. Extract and document business rules embedded in assembly code to aid in code conversion efforts. Work extensively with IRS Core Record Layouts (CRL) and QSAM data formats to facilitate data transformation and processing. Collaborate with other teams to ensure proper understanding and migration of legacy system logic. Use CA Endevor Software Change Manager (SCM) to manage version control, secure code releases, and lifecycle processes. Employ BMC Control-M for automating batch job scheduling, execution monitoring, and workflow management. Required Skills & Experience: Bachelor’s degree in Computer Science, Information Systems, or a related discipline. Strong knowledge of IBM z/OS assembly language, including assembly instructions, addressing modes, data manipulation, job control language (JCL), and job processing. Familiarity with IBM mainframe architecture components such as storage hierarchy (registers, memory, I/O), system calls (SVCs), and interrupt handling. Experience with IRS Core Record Layouts (CRL) and QSAM/VSAM data formats is highly preferred. Prior work with IRS systems like Individual Master File (IMF) or Business Master File (BMF) is a plus. Proficient in using CA Endevor SCM for controlled software development and release management. Experienced with BMC Control-M for job scheduling and batch automation. Familiarity with mainframe development tools such as debuggers, assemblers, linkers, and utility programs. Working knowledge of DB2 and other legacy data storage solutions. Basic understanding of Java programming, including object-oriented concepts, syntax, and frameworks, with the ability to translate assembly logic into Java constructs (loops, conditionals, functions, design patterns).

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