Senior Software Engineer - Mainframe
rocket · Vilnius, Lithuania · On-site
Pay: EUR 49,000 – 83,300 a year
Posted Aug 6, 2026
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Job Description Summary:
The Senior Software Engineer designs, develops, troubleshoots, debugs, and sets the direction for the design and implementation of software features/functionality/enhancements, correction of defects, and/or the creation of new products. Develops Enterprise Program Products for monitoring IBM z/OS Storage environments. Determines software’s compatibility with hardware and/or influences software's design in relation to hardware.
Essential Duties and Responsibilities :
Review and provide feedback on designs.
Takes ownership of the design and development of features within their component.
Recognizes and practically solves for anti-patterns.
Good understanding of how his/her work aligns with high-level use cases and team deliverables.
Define (more than a feature, less than a product) a component that fits into an architecture.
Describe and defend design decisions for components owned by the team.
Optimize software design to leverage platform capabilities.
Acts as the technical subject matter expert for a product domain.
Quantify and communicate work estimates and risks to direct management.
Handle multiple competing priorities with minimal help.
Understand features as a whole and able to break down larger stories and features into tasks.
Familiar with most of the technologies we focus on and what markets they target.
Takes ownership of customer issues and effectively communicate with Support/SEs to resolve field questions/issues.
Discuss with customers what larger concerns and problems they are trying to solve, over and above the immediate technical concerns.
Willingness to teach and grow junior team members.
Excellent listening skills.
Effectively works within the team and across teams.
Ensures all tasks are completed thoroughly and that any work done is tested, unit tested, documented, and ready for customers.
Takes identified problems and concerns and creates a plan to fix the problem and prevent it from occurring again.
Follows through on all tasks.
Reliably delivers expected work products and outcomes.
Imparts a sense of urgency on junior team members.
Required Qualifications:
Experience in software engineering at a senior level
Proven track record of software development in the real world
Proficient in IBM z/OS Assembler (HLASM) development and debugging
Proficient in C/C++ development and debugging
Preferred Qualifications:
Familiar with IBM z/OS operating systems environments and facilities (JES, ISPF)
Familiar with IBM z/OS Storage Management
Familiar with IBM High Level Assembler (HLASM) development and debugging
Can-do attitude
Curious and asks "why"
Education:
Bachelor's degree or equivalent.
Travel Requirements:
0 - 10%
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What Rocket Software can offer you in Vilnius:
Health Insurance from Day 1: Choose from 3 great options!
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