Senior Mainframe Software Engineer Jobs in Colorado

We are seeking a meticulous and process-oriented Senior Software Engineer to join a highly skilled team dedicated to developing and supporting enterprise-level output management products on the mainframe platform.
This is a unique opportunity for an engineer who balances a "deep dive" technical mindset with the leadership capacity to guide complex software solutions. You will be responsible for the health, enhancement, and integration of mission-critical mainframe services, ensuring high efficiency and customer satisfaction through disciplined engineering practices.
Core Responsibilities
Systems Development & Optimization
• Full-Lifecycle Engineering: Scope, design, and develop complex components for software products within the z/OS ecosystem.
• Modernization: Ensure design and code development incorporates the latest technologies while maximizing mainframe resources.
• Problem Resolution: Act as a tier-three troubleshooter, digging beneath symptoms to uncover root causes and implementing guided fixes for intricate system issues.
Technical Leadership & Strategy
• Project Planning: Lead professional teams and multi-functional projects, ensuring deliverables are completed on or ahead of schedule without sacrificing quality.
• Advisory: Serve as a subject matter expert, advising other professionals on complex software issues and contributing to the development of broader organizational goals.
• Process Excellence: Define and implement software alternatives that improve team efficiency, creating or enhancing tools to streamline workflows.
Quality & Documentation
• Precision Reviews: Lead rigorous code and design reviews, applying a detail-driven approach to ensure polished, complete work.
• Knowledge Management: Maintain exhaustive documentation for systems, technical decisions, and alternative solutions to foster team-wide knowledge sharing.
Technical Requirements
• Education: BS Degree in Computer Science, Engineering, or a related technical discipline.
• Mainframe Expertise: Proven experience with IBM 360/370 architectures and MVS/SP.
• Language Proficiency: 1+ years of professional experience in Assembler, PL/1 (or PLX), C, and JCL.
• Engineering Background: 2+ years of formal Software Engineering experience with a focus on system/product design and integration.
The Ideal Profile
• Process-Oriented: You value accuracy over speed and are committed to maintaining clear, repeatable workflows.
• Continuous Learner: You are eager to further your expertise in low-level mainframe technologies through hands-on work and mentorship.
• Accountable: You understand that your decisions have a direct impact on project objectives and customer satisfaction, and you take ownership of those outcomes.
Equal Opportunity Employer / Disabled / Protected Veterans
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https://www.dol.gov/sites/dolgov/files/ofccp/pdf/pay-transp_%20English_formattedESQA508c.pdf
For temporary assignments lasting 13 weeks or longer, AllSTEM Connections is pleased to offer major medical, dental, vision, 401k and any statutory sick pay where required.
We are committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation for any part of the employment process, please contact your staffing representative who will reach out to our HR team.
AllSTEM Connections participates in the E-Verify program in certain locations as required by law. Learn more about the E-Verify program.
https://e-verify.uscis.gov/web/media/resourcesContents/E-Verify_Participation_Poster_ES.pdf
We also consider for employment qualified applicants regardless of criminal histories, consistent with legal requirements, including, if applicable, the City of Los Angeles' Fair Chance Initiative for Hiring Ordinance. Pursuant to applicable state and municipal Fair Chance Laws and Ordinances, we will consider for employment-qualified applicants with arrest and conviction records, including, if applicable, the San Francisco Fair Chance Ordinance. For Los Angeles, CA applicants: Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.
Additional Skills
(none specified)
AllSTEM Representative Contact Info
Account Executive:
Perry
Branch Phone:
(909) 244-1777
Location:
Houston, TX