Application Developer (Assembler and CRL)

Job Description

Job Description

About Our Company :

Delmock Technologies, Inc. (DTI), is a leading HUBZone business in Baltimore, known for delivering sophisticated IT (Information Technology) and Health solutions with a commitment to ethics, expertise, and superior service. Actively engaged in the local community, DTI creates opportunities for talented residents while maintaining a stellar reputation as an award-winning contractor, earning accolades like the Government Choice Award for IRS (Internal Revenue Service) Systems Modernizations.

Location : This position is remote.

Clearance :

An Active IRS MBI clearance is required.

Role :

Delmock Technologies, Inc. is seeking an 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).

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.

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.

Assist development teams with validating ALC-to-Java code conversions and debugging Java errors.

Minimum Requirements :

Bachelor’s degree in Computer Science, Information Systems, or a related field.

In-depth knowledge of IBM z / OS assembly language, including :

Assembly instructions, addressing modes, and data manipulation techniques

Job control processing and JCL

Adequate Java programming skills, including :

Object-oriented principles, syntax, libraries, and frameworks

Ability to map assembly logic to Java constructs (loops, conditionals, functions, design patterns)

Experience validating Java code conversions against legacy logic

Ability to assist with debugging and resolving Java errors during migration

Familiarity with IBM mainframe architecture, including :

Storage hierarchy (registers, memory, I / O)

System calls (SVCs) and interrupt handling

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.

Preferred / Nice to Have Skills :

IRS GFE (badge and laptop)

Experience with IRS Core Record Layouts (CRL) and QSAM / VSAM data formats

Experience with IRS IMF or BMF systems

Recently ranked as high as #3 among HUBZone Companies in a GOVWIN survey, DTI offers a dynamic environment for those passionate about impactful projects, community involvement, and contributing to top-ranking Federal and State Commissionaires project support teams.

At DTI, we balance continuous growth and innovation with a strong dedication to corporate social responsibility. Join our talented team and be part of a company that values both professional excellence and community impact. Explore the exciting career opportunities awaiting you at DTI!

DTI is committed to hiring and maintaining a diverse workforce. We are an equal opportunity employer making decisions without regard to race, color, religion, sex, national origin, age, veteran status, disability, or any other protected class.