Temporary Mainframe Jobs (NOW HIRING)

Job Title: Senior Mainframe Systems Developer
Role Overview
We are seeking a Senior Mainframe Systems Developer to design, maintain, and optimize mission-critical enterprise applications. You will serve as a technical lead for our high-volume batch processing systems, ensuring data integrity, system performance, and seamless integration across our financial operations.
This role is for a seasoned developer who thrives on the stability and complexity of mainframe environments. You will own the full development lifecycle-from scoping and design to coding, testing, and production support. If you are a COBOL expert who enjoys leading project phases and translating technical system logic into business-meaningful results, we want to hear from you.
Key Responsibilities
System Development & Optimization
• Technical Lifecycle: Scoping, designing, and developing complex information systems. Translate intricate business requirements into robust, high-performing code (COBOL, SQL) and system procedures.
• Batch Performance: Own the architecture and maintenance of large-scale batch processing cycles. Optimize system capacity, throughput, and response times for mission-critical operations.
• Production Support: Act as a technical escalation point for system failures and performance events. Conduct root-cause analysis to ensure long-term stability and eliminate recurring downtime.
Leadership & Strategy
• Technical Leadership: Serve as a project or technical lead for initiatives of varying scale. Mentor less-experienced programmers and guide them through technical best practices and coding standards.
• Business Translation: Act as a bridge between technical engineering teams and non-technical business partners. Ensure that system capabilities are clearly understood and aligned with organizational financial processes.
• Strategic Upkeep: Maintain a deep and evolving skill set across platforms, databases, and network utilities to support our complex technology landscape.
Qualifications & Requirements
Minimum Qualifications
• Education: Bachelor's degree in Computer Science, Business, or equivalent technical work experience (1:1 ratio for degree years/experience).
• Experience Baseline: 3+ years of systems and programming experience; 1+ years of expert-level working knowledge of COBOL.
• Technical Mastery: Proven experience with mainframe information technology environments and SQL.
• Domain Experience: Demonstrated experience with complex batch enrollment and financial data processing in a high-volume production environment.
Preferred Attributes
• Proven ability to lead large, complex project workstreams independently.
• Exceptional analytical and problem-solving skills; you are a "driver" who takes ownership of technical tasks from start to finish.
• Ability to effectively communicate technical constraints to business stakeholders to ensure realistic project delivery.
Equal Opportunity Employer / Disabled / Protected Veterans
The Know Your Rights poster is available here:
https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12.pdf
The pay transparency policy is available here:
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:
IN HOUSE
Branch Phone:
(909) 244-1777
Location:
Ontario, CA