Mainframe Developer
JConnect Infotech
Mainframe Developer
Design, develop, enhance, and support mainframe applications, ensuring stability and performance of legacy systems that support critical business functions.
• Perform application enhancements, maintenance, and defect fixes across mainframe codebases.
• Develop, maintain, and support batch jobs and online programs, ensuring reliable execution and timely processing.
• Work hands on with core mainframe technologies such as COBOL, JCL, and mainframe utilities.
• Analyze existing programs and perform impact assessments for enhancements and fixes.
• Support batch scheduling, job execution, and restart/recovery scenarios.
• Participate in testing activities, including unit testing, system testing, and support for UAT.
• Debug and resolve production and non production issues related to batch and online processing.
• Ensure applications meet performance, reliability, and security standards expected in enterprise environments.
• Maintain and update technical documentation, including program logic, job flows, and system dependencies.
• Collaborate with business analysts and stakeholders to understand requirements and translate them into technical solutions.
• Support application modernization or migration initiatives when required.
• Follow established change management, release, and incident management processes.
• Work effectively in an Agile or hybrid Agile Waterfall delivery model, depending on program needs.
• Ensure high quality delivery with minimal disruption to business operations.
Responsibilities:
• Develop and enhance mainframe applications using COBOL and supporting technologies.
• Create, modify, and maintain JCL scripts for batch processing.
• Support online and batch job execution, monitoring, and troubleshooting.
• Perform defect analysis and fixes across development, test, and production environments.
• Participate in testing cycles, ensuring fixes and enhancements meet functional requirements.
• Maintain technical and operational documentation for programs and batch processes.
• Collaborate with cross functional teams including QA, business users, and operations.
• Support production releases and post deployment stabilization.
• Participate in code reviews and adhere to mainframe coding standards.
• Assist with audits, compliance activities, and documentation requests for regulated systems.
• Provide knowledge transfer and support for junior team members when required.
- ...Mainframe Developer Our client, an IT Services and Consulting company, is looking for a Mainframe Developer with Hogan experience for their Texas City, TX/Minneapolis, MN/Brookfield, WI/Irving, TX/Atlanta, GA/Columbus, OH/Charlotte, NC/Hybrid location. Requirements...Mainframe
- ...Mainframe Developer Proficiency with IBM Sterling ConnectDirect (formerly NDM). Experience with mainframe environments, particularly zOS. Strong knowledge of JCL and batch processing. Familiarity with file transfer protocols (e.g., FTP, SFTP). Knowledge of related mainframe...Mainframe
- ...Mainframe Developer Our client, an IT Services and Consulting company, is looking for a Mainframe Developer for their Brookfield, WI/Minneapolis, MN/Irving, TX/Atlanta, GA/Columbus, OH/Charlotte, NC/Hybrid location. Requirements: Good communication and analytical...Mainframe
- ...Mainframe Developer 100% onsite role (2-3 days onsite so it would be hybrid role) Location: Charlotte, NC/ Dallas, TX/ Hoffman Estates, IL Duration: 12 Months Technology Stack: CICS, Cobol, JCL, DB2, and Telon. DB2 need to be very strong most of the client rejection...Mainframe
- ...Solution Architect - Mainframe Senior hands-on developer with good communication and some lead experience responsible for analysis, design, coding, component and assembly testing. Contractor will be involved in maintenance (including production support). Contractor...MainframeFor contractorsWork at office
- ...Role: Mainframe Developer Location: Malvern, PA - Hybrid Responsibilities A Mainframe Developer required in developing and maintaining applications on mainframe systems, typically using languages like COBOL, JCL, and CICS. Strong knowledge of DB2. Key responsibilities...MainframeWork from homeFlexible hours
- ...Mainframe Developer Opportunity If you are a self-starter who is passionate about mainframe development and thrives in a fast-paced, dynamic environment, we encourage you to apply for this exciting opportunity. Required Skills Bachelor's degree in computer...Mainframe
- ...Senior Mainframe COBOL Developer Location: Brookfield, WI OR Portland, OR/ Minneapolis, MN/ Irving, TX/ Atlanta, GA/ San Francisco, CA/ Concord, CA/ Denver, CO/ Cincinnati, OH/ Chicago, IL/ Charlotte, NC/ New York, NY Duration: 8 months of Contract Job Overview...MainframeContract work
$107.12k - $160.68k
...The Developer with Mainframe expertise is an intermediate level position responsible for participation in the establishment and implementation of new or revised application systems and programs in coordination with the Technology team. The overall objective of this role...MainframeFull time- ...Role: Mainframe Developer with Python Location: Remote Exo: 9+ years JD: Senior level Python experience Experience using Python on the mainframe is a must data-processing Python experience is a plus Mainframe DB2 experience Mainframe...MainframeRemote work
- ...Title: IMS Mainframe System Programmer Location: Dallas, TX- 1 Day Responsibilities: Experience working within an IMS Database environment. Familiarity with mainframe functional areas such as z/OS Operating System, Storage, Databases, CICS, and Disaster Recovery...MainframeWork experience placement
$107.12k - $160.68k
...Citi is looking for a Developer with Mainframe expertise in Irving, Texas. This role involves participation in the implementation of application systems and programs, and a focus on systems analysis and programming activities. The ideal candidate should have 5-8 years...Mainframe- ...I have an opportunity for "Mainframe Developer ___ Dallas, TX- Hybrid" and I am looking for a candidate who can join Immediately if you are interested, reply to me with your updated resume or if you could refer someone I would really appreciate it. Position :...MainframeContract workFor subcontractorImmediate startRemote work
- ...Vytwo is looking for a Mainframe Developer based in the United States, Texas, Dallas to develop and maintain applications on mainframe systems. The successful candidate will utilize languages such as COBOL, JCL, and CICS, with strong knowledge of DB2. This role involves...MainframeRemote workWork from homeFlexible hours
$98.18k - $115.5k
U.S. Bank is seeking a skilled software engineer in Irving, Texas. This role involves full stack ownership in design, development, and maintenance of products with a focus on Cobol, DB2, JCL, and VSAM. You should have three to five years of experience and a bachelor's ...Mainframe- ...An innovative tech company is seeking an experienced Remote Cobol Developer to work with IBM Mainframe systems. This role requires over 5 years of hands-on experience with ANSI COBOL, CICS, and JCL. Responsibilities include designing and supporting COBOL programs, developing...MainframeRemote workFlexible hours
- ...Job Title: Mainframe Sr Developer Job Location: Milwaukee, WI, Lincoln, NE, Omaha, NE, Alpharetta, GA, Berkeley Heights, NJ, Dallas, TX, Atlanta, GA, or Frisco, TX (100% Onsite) # Positions: 3 Employment Type: Contract to Hire / FTE Key Technology: Mainframe...MainframeContract work
- ...ZOS ISVs Mainframe System Programmer Location: Dallas, TX Responsibilities: Perform standard system programming activities like configuration, installation maintenance using SMP/E, and vendor software installations in the mainframe environment. Perform Operating...MainframeWork experience placement
- ...Inforce App Development to oversee technical solutions and drive product modernization. The role demands significant experience in IBM Mainframe technologies and Life Insurance systems. The ideal candidate will manage cross-functional teams, ensure compliance with standards,...Mainframe
- ...Lead Software Engineer (Sr. Backend Engineer W/ DevOps Specialization) Migration Loan Origination system from mainframe Cobol to AWS microservice architecture Must have Flawless communication Typescript expert (Please try for Node.js for backend along with...Mainframe
- ...A major financial services company is looking for a skilled Mainframe Engineer to maintain and optimize mainframe infrastructure supporting core operations, especially in transaction processing. This role requires 1-3 years of experience, proficiency in IBM z/OS and JCL...MainframeFlexible hours
$112.5k - $165k
...project solutions. The ideal candidate has extensive experience in the Life & Annuity domain, possess strong technical skills in mainframe technologies, and can lead in a collaborative environment. This full-time role in Addison, Texas, offers a base pay range of $112,...MainframeFull timeFlexible hours- ...Job Posting Expert knowledge and hands-on experience in Mainframe z/OS CICS, COBOL, VSAM, JCL, MQ, XML/MLI, Change-man and various tools... ...Detail design and Technical Documents Ability to code and develop individual modules in both Batch and Online environments...MainframeFull timeShift work
- DXC Technology is looking for a CyberLife Mainframe Developer in Dallas, Texas. The role involves developing solutions for the insurance industry, with a focus on modernization and software development. Key responsibilities include writing and debugging code, collaborating...Mainframe
- The Depository Trust & Clearing Corporation (DTCC) is seeking a Lead Mainframe Engineer to design, deploy, and support innovative software solutions. The role involves collaborating with business partners to meet technical requirements and improve application performance...MainframeRemote work
$93k - $189k
Huntington National Bank is seeking a Lead z/OS Platform Engineer to oversee critical mainframe systems. This onsite role requires deep expertise in z/OS, CICS, and MQ, focusing on performance management and project leadership. Candidates must have at least 7 years of experience...Mainframe- ...Exciting Remote Cobol Developer with Hogan contract opportunity. Requirements Design, code, test, debug and support COBOL programs... ...scheduling, scheduling jobs via Control-M or CA-7 Integrate Mainframe applications with Hogan platforms (assessment engines,...MainframePermanent employmentContract workRemote work
- ...Software Developer Being a member of IT CSS-WRAFT Delivery team, you will be responsible in planning, documenting technical requirements, designing, developing, and testing all software systems and applications for the firm. Work closely with architects, product managers...Mainframe
- ...development, testing, migration, enhancement to adapt new releases • Experience with sourcing data across multiple platforms (Mainframes, FTP, Data Warehouse) • Experience with SLDC/Waterfall/Agile methodologies for development artifacts • Experience with JSON/XML...Mainframe
- ...Experienced in unit testing, test-driven development, integration testing, and deployment using cloud technologies. ~ Willing to learn Mainframe Technologies ( COBOL, CICS, JCL, DB2 etc) ~ Excellent written and verbal communication skills. ~ Experience with Waterfall...MainframeWork experience placementRelocation
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Mainframe Developer. Be the first to apply!
- access developer Dallas, TX
- programmer Dallas, TX
- remote entry level developer Dallas, TX
- tableau report developer Dallas, TX
- engine programmer Dallas, TX
- angularjs developer Dallas, TX
- junior programmer Dallas, TX
- adobe experience manager aem developer Dallas, TX
- weekend developer Dallas, TX
- entry level mulesoft developer Dallas, TX

