Senior IBM Z/TPF Software Engineer

Veriipro; Washington (District of Columbia); On-site; USD 140,000 - 180,000; Full time

Job summary

Veriipro is seeking a Senior IBM z/TPF Software Engineer in Washington, DC to develop, maintain, and troubleshoot high-volume transaction-processing applications using HLASM/Assembler. The role emphasizes production debugging, root-cause analysis, system internals, and performance optimization.

The candidate will lead troubleshooting efforts, analyze ECB processing, provide robust fixes, and mentor junior developers while collaborating with architects and business teams to ensure high-quality

Qualifications

• 8+ years of IBM z/TPF and HLASM/Assembler experience.
• Strong knowledge of z/TPF architecture, ECB processing, storage management, and transaction processing.
• Experience with production debugging, dump analysis, and diagnostic utilities.
• Experience with high-volume transaction systems such as airline, transportation, reservation, ticketing, inventory, or logistics.
• Familiarity with Git, Jira, and Agile/Scrum.

Responsibilities

• Develop, maintain, and support IBM z/TPF applications using HLASM/Assembler.
• Troubleshoot production issues using z/TPF Toolkit, debuggers, dump analysis, and diagnostic tools.
• Analyze ECB processing, registers, storage, work areas, control blocks, flags, and transaction flows.
• Support TPFDF records, ordinals, chain records, and database access logic.
• Perform root-cause analysis and implement production-safe fixes.
• Trace complex assembler code and macro-generated processing flows.
• Conduct code reviews, mentor developers, and collaborate with architects and business teams.
• Prepare technical documentation and support testing, deployments, and post-release validation.

Skills

z/TPF knowledge

HLASM/Assembler

Root-cause analysis

Mentoring

Debugging

Performance optimization

Team collaboration

Education

Bachelor’s degree in Computer Science/Engineering

Tools

Git

Jira

Agile/Scrum

Job description

Job Summary

Seeking a Senior IBM z/TPF Software Engineer with 8+ years of experience developing, maintaining, and troubleshooting high-volume transaction-processing applications using HLASM/Assembler. The role focuses on application development, production debugging, root-cause analysis, system internals, and performance optimization.

Key Responsibilities

• Develop, maintain, and support IBM z/TPF applications using HLASM/Assembler.
• Troubleshoot production issues using z/TPF Toolkit, debuggers, dump analysis, and diagnostic tools.
• Analyze ECB processing, registers, storage, work areas, control blocks, flags, and transaction flows.
• Support TPFDF records, ordinals, chain records, and database access logic.
• Perform root-cause analysis and implement production-safe fixes.
• Trace complex assembler code and macro-generated processing flows.
• Conduct code reviews, mentor developers, and collaborate with architects and business teams.
• Prepare technical documentation and support testing, deployments, and post-release validation.

Required Qualifications

• Bachelor’s degree in Computer Science, Engineering, or related field, or equivalent experience.
• 8+ years of IBM z/TPF and HLASM/Assembler experience.
• Strong knowledge of z/TPF architecture, ECB processing, storage management, and transaction processing.
• Experience with production debugging, dump analysis, and diagnostic utilities.
• Experience with high-volume transaction systems such as airline, transportation, reservation, ticketing, inventory, or logistics.
• Familiarity with Git, Jira, and Agile/Scrum.

Preferred Qualifications

• Experience with TPFDF and file/record structures.
• C and C/Assembler integration experience.
• Familiarity with z/OS, TSO/ISPF, and JCL.
• Experience modernizing and optimizing legacy assembler applications.