Mainframe Developer – Unisys OS2200

This is a fully remote position, open to applicants in Washington.

📋 Description

• Analyze, maintain, enhance, and provide support for mission-critical applications operating on the Unisys OS2200 platform.

• Develop, modify, troubleshoot, and optimize applications crafted in COBOL ANSI 74.

• Design, develop, and sustain ECL job streams along with batch processing solutions.

• Provide support and maintenance for applications that utilize DMS databases.

• Develop and manage TIP online transaction processing applications.

• Collaborate with SSG and associated system utilities to ensure application and system functionality.

• Conduct application analysis, impact assessments, and root-cause investigations for production issues.

• Develop and carry out unit, integration, system, and user acceptance testing activities.

• Create and maintain technical specifications, system documentation, operational procedures, and support materials.

• Engage in application remediation, modernization, migration, and upgrade initiatives.

• Work together with business analysts, project managers, architects, infrastructure teams, and end users to deliver high-quality solutions.

• Support production deployments, release management activities, and post-implementation validation.

• Facilitate integration with Workday HCM, Payroll, Finance, and related enterprise services.

• Ensure reliable and secure data exchange between legacy applications and the Workday platform.

⛳️ Requirements

• Bachelor's degree in Computer Science, Information Systems, Engineering, or a related field.

• An equivalent combination of education and relevant experience may be considered.

• Over 5 years of experience in developing and supporting enterprise applications within a mainframe environment.

• Experience with Unisys OS2200.

• Proficiency in COBOL ANSI 74.

• Familiarity with ECL (Executive Control Language).

• Experience with SSG.

• Proficient in DMS (Data Management System).

• Experienced with TIP (Transaction Interface Package).

• Strong background in application testing, defect analysis, and quality assurance activities.

• Experience supporting large-scale legacy application environments and mission-critical business systems.

• Excellent analytical and troubleshooting skills.

• Outstanding verbal and written communication abilities.

• Capability to create clear and comprehensive technical documentation, system procedures, and operational support guides.

• Experience working within cross-functional project teams and collaborating with both technical and business stakeholders.

• Must be eligible to work in the United States.

• Preferred: experience with application modernization, remediation, or migration initiatives involving legacy mainframe platforms.

• Preferred: experience supporting large government, public sector, financial services, insurance, or enterprise environments.

• Preferred: knowledge of SDLC, change management, and release management practices.

• Preferred: experience participating in system integration, data conversion, or platform transformation projects.

• Preferred: familiarity with Agile, Scrum, or hybrid project delivery methodologies.

• Experience mentoring junior and mid-level developers.

• Understanding of payroll, HR, finance, and workforce management business processes.

• Experience communicating with executives, architects, business stakeholders, and technical teams.

🏝️ Benefits

• Medical insurance

• Dental insurance

• Vision insurance

• PTO

• 401K matching

• Education reimbursement

• Community and philanthropic events

• Flexible career paths