Senior Assembler Developer

Take on a high-specialization role focused on the core of enterprise computing. You will be responsible for the development, optimization, and modernization of low-level systems that power global business operations. This is a position for a technical craftsman who understands the "heartbeat" of the mainframe and can bridge the gap between legacy efficiency and modern integration requirements.

Details

• Location: Remote (hybrid possible) 

• Seniority: Senior (7+ years of professional experience).

• Rate: 160 PLN/h net + VAT on B2B

• Language: Fluent English.

• Start: ASAP.

Responsibilities

• System-Level Engineering: Designing, coding, and testing high-performance Assembler (HLASM) modules.

• Modernization & Integration: Ensuring that low-level Assembler components communicate effectively with higher-level languages like COBOL, PL/I, or Java.

• Performance Forensics: Tuning system performance and resource consumption using tools such as IBM RMF or OMEGAMON.

• Critical Support: Debugging and resolving complex system-level issues using advanced diagnostics (e.g., Abend-AID, IBM Debug Tool).

• Mentorship: Acting as a technical authority for the mainframe team and sharing knowledge on z/OS internals.

Requirements

• Mainframe Stack: Mastery of IBM z/OS environments, including MVS, CICS, and DB2.

• Language Expertise: Expert-level knowledge of Assembler (HLASM) and its interaction with the operating system.

• Tooling: Experience with performance monitoring and debugging tools specific to the IBM Z platform.

• Architecture: Deep understanding of memory management, registers, and instruction sets.