Mainframe Developer

Job#: 3039308

Job Description:

Hybrid On-Site Dearborn MI 4 Days

$60-75/hr

12+ Month Contract

Position Description: Job Function DescriptionEmployees in this job function are responsible for designing, developing, testing, maintaining, and supporting critical software applications and products to meet customer needs. As an integral part of the Vehicle Order Processing and Control Product team, they are involved in the entire software development lifecycle (SDLC)-including business analysis, technical consultation, designing robust backend and integration software architectures, writing code (COBOL, JCL, Java), testing for quality, and deploying system updates. This role focuses on developing and maintaining backend mainframe components (DB2, IMS, stored procedures, MQs, REST services) and their integration points with Java-based systems to ensure seamless, end-to-end transaction processing.Key ResponsibilitiesEngage with customers (business partners and product owners) to deeply understand vehicle order processing use-cases, pain points, and system requirements, showcasing empathy and advocating for high-performance, backend-driven software solutions.Solve complex problems by designing, developing, troubleshooting, and modifying Mainframe systems utilizing tools and languages such as COBOL, DB2, JCL, VSAM, IMS, and REXX, working in a highly collaborative, results-driven Agile environment.Assess the requirements of mainframe applications and services to determine the most suitable technology stack, integration methods (such as DB2 REST services, Message Queues (MQs), and microservices), and deployment strategies.Create high-level software architecture designs that outline the overall structure, components, and interfaces of applications, specifically defining how Java-based systems securely and efficiently communicate with DB2 back-end databases.Collaborate with cross-functional teams like product owners, frontend developers, architects, and database administrators to deliver cohesive, high-quality features.Define and implement software test strategies, guidelines, policies, and processes for both high-volume batch processing and online transaction mainframe applications, aligning with organization vision and industry best practices.Work on continuously improving performance and optimizing applications-including recommending and executing DB2 database performance tuning actions-and implement new development tools (such as Endeavor) to maximize engineering efficiency.Familiar with programming practices-such as test-driven development (TDD), continuous integration, and continuous delivery (CI/CD)-adapting these methodologies to a hybrid Mainframe and Java backend ecosystem.Support security practices to safeguard critical vehicle, order, and customer data, ensuring proper encryption, secure APIs, and data anonymization across both mainframe (DB2) and non-mainframe (SQL Server) databases.Enable user-friendly and interactive interfaces by developing highly performant and reliable backend APIs, data access layers, and communication channels (MQs, stored procedures) that power frontend consumer applications.Develop and maintain back-end applications like APIs, microservices, and database layers using server-side languages, COBOL stored procedures, IMS transactions, and SQL Server integration.Evaluate and incorporate emerging technologies and capabilities (such as hybrid-cloud integration, DB2 REST services, and modern mainframe tooling) to deliver solutions, monitoring and participating in new stack layers often involving industry collaboration.Operational RequirementsProvide off-hours production support as required for the North America Eastern Time Zone.

Skills Required: Mainframe Systems

Education Required: Bachelor's Degree

EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at or .

Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.

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Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Everforth Apex team member can provide.

Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.

If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at or . Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.

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