Senior Legacy Systems Engineer (COBOL Modernization)

American Ops; Montgomery (AL); On-site; USD 95,000 - 130,000; Full time

Benefits offered by this job

Health Care Plan (Medical, Dental & Vision)

Retirement Plan (401k)

Life Insurance (Basic, Voluntary & AD&D)

Paid Time Off (Vacation, Sick & Public Holidays)

Short Term & Long Term Disability

Job summary

American Ops is seeking a Senior Legacy Systems Engineer based in Montgomery, Alabama. This role involves providing technical leadership for the sustainment and modernization of legacy IMDS/IMDS-MSM components. The ideal candidate will support API modernization, validate coexistence between legacy and modernized components, and assist in migrating tightly coupled legacy workflows into modern architectures.

Candidates must have at least 10 years of experience in legacy application support and must possess a DoD Secret Clearance. The position offers comprehensive benefits including medical, dental, vision, and a retirement plan.

Qualifications

• DoD Secret Clearance required.
• 10+ years of legacy application support experience.
• Experience in modernizing legacy enterprise applications.
• Experience with mission-critical operational systems.

Responsibilities

• Provide technical leadership for sustainment and modernization of legacy components.
• Support API modernization and validate coexistence between legacy and modernized components.
• Assist with migration of legacy workflows into modern architectures.
• Conduct technical debt analysis and modernization risk assessment.

Skills

COBOL

Legacy application sustainment

Mainframe/legacy integration

Batch processing

Data synchronization

Legacy modernization techniques

API integration

SQL/Oracle

Education

Bachelor’s degree or equivalent experience

Job description

Provides technical leadership for sustainment, refactoring, coexistence management, and modernization of legacy IMDS/IMDS-MSM components and associated enterprise workflows. This role supports analysis, decomposition, refactoring, and incremental modernization of legacy application capabilities while preserving operational stability, synchronization integrity, maintenance history continuity, and mission‑critical sustainment workflows.

The Senior Legacy Systems Engineer evaluates modernization candidates, identifies modernization sequencing risks, supports API modernization, validates coexistence between legacy and modernized components, and assists with migration of tightly coupled legacy workflows into modern architectures where operationally appropriate. This role works closely with the System Architect, Enterprise Integration Lead, Product Owners, DevSecOps Platform Lead, and Functional SMEs to ensure modernization activities do not disrupt maintenance scheduling, discrepancy management, disconnected operations synchronization, personnel qualification tracking, or operational reporting.

The Senior Legacy Systems Engineer also supports technical debt analysis, modernization risk assessments, data integrity validation, and rollback planning during modernization execution.

Must possess DoD Secret Clearance.

Technical Skills

• COBOL
• Legacy application sustainment
• Mainframe/legacy integration
• Batch processing
• Data synchronization
• Legacy modernization techniques
• API integration
• SQL/Oracle

Certifications

Preferred:

• Security+

Education

• Bachelor’s degree or equivalent experience.

Experience

• 10+ years legacy application support.
• Experience modernizing legacy enterprise applications.
• Experience supporting mission‑critical operational systems.

• Health Care Plan (Medical, Dental & Vision)
• Retirement Plan (401k)
• Life Insurance (Basic, Voluntary & AD&D)
• Paid Time Off (Vacation, Sick & Public Holidays)
• Short Term & Long Term Disability