Senior Developer – Mainframe / Assembler (z/OS, TPF)

Lumen Solutions Group Inc • Washington, DC

8h • Remote

About The Position

Client is seeking a Senior Developer with deep experience in IBM z/OS mainframe environments, specifically working with Assembly language and C/C++. The developer will support and enhance a critical legacy application primarily written in Assembler, while also contributing to system integrations and new service development. This role requires strong experience working with mainframe-based transportation or enterprise systems, along with the ability to analyze complex systems and design integration solutions across multiple platforms.

Requirements

• Deep experience in IBM z/OS mainframe environments.
• Experience working with Assembly language and C/C++.
• Strong experience working with mainframe-based transportation or enterprise systems.
• Ability to analyze complex systems and design integration solutions across multiple platforms.
• Mainframe Environment IBM z/OS
• Experience with TPF-based systems.
• Programming Languages: Assembly (Primary language), C, C++
• Integration Technologies: Experience working with enterprise integrations such as: DB2 databases, REST or enterprise APIs, IBM MQ messaging, File-based integrations, SFTP data transfers
• Legacy system enhancements.
• Integration design and implementation.
• New service/component development.
• System troubleshooting and debugging.

Responsibilities

• Enhance and maintain an existing mission-critical mainframe application written primarily in Assembler.
• Perform system analysis and propose technical design solutions.
• Develop and maintain components in Assembler and C/C++.
• Design and implement integrations between legacy systems and enterprise services.
• Develop and support API integrations as both a producer and consumer.
• Work with messaging systems such as IBM MQ.
• Build and maintain file-based integrations including SFTP-based data exchanges.
• Support database interactions with DB2.
• Collaborate with architecture and engineering teams to modernize and extend legacy systems.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed