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Senior Java Mainframe Developer Jobs (NOW HIRING)

Dew Softech Inc

Senior COBOL /Mainframe Developer

Trenton, NJ · On-site

$49.25 - $63.25/hr

Senior COBOL /Mainframe Developer Location: Trenton, NJ (On site) Position Type: Contract In Person interview *Local Candidates only. Candidates should have strong background in Cobol, ADABAS, and ...

Bitco Corporation

Mainframe Developer

Davenport, IA · Hybrid

$43.50 - $55.75/hr

Works with other Software Developers, Senior Software Developers and Leadership team to create ... Creates or enhances applications using a mainframe technology stack * Collaborates with other ...

JS Consulting

Sr. Mainframe Developer

Woodlawn, MD · On-site

$51 - $65.50/hr

Job Title- Sr. Mainframe Developer Project Location - Woodlawn, MD (5 days per week onsite) Duration- 6+ months contract Skills: Strong experience with IBM z/OS (OS/390/MVS) environment developing ...

Palnar

Java Backend App Developer

Plano, TX · On-site

$48.25 - $62.75/hr

Sr. Java App Developer (8+ yrs exp) * Project: POT: Platform of the Future within the Loan Servicing Group, pulling logic from mainframe and moving to new java-based tech stack * Mainframe building ...

EdgeAll

Senior Mainframe with .NET experience

Plano, TX · On-site

NET Developer Secondary: JIRA, Jenkins, Github. Experience: Minimum 7 years Roles & Responsibilities Senior Mainframe Developer COBOL, DB2, CICS with .NET Experience We are seeking a highly skilled ...

Compunnel

Senior Mainframe Developer

New York, NY · On-site

... Senior Mainframe Developer with 15-22 years of experience to support and enhance mission-critical enterprise applications within the Banking, Financial Services, or FinTech domain. The ideal ...

AHU Technologies Inc

Sr Java Developer

Washington, DC · On-site

$80 - $85/hr

TITLE: Sr Java Developer LOCATION: Washington, DC/ Onsite Employment type: Contract w2/1099/C2C ... Desired 1 Year · Working with mainframe CICS containers and channels using JCA connectors. Desired ...

Themesoft, Inc.

Mainframe Developer

Chandler, AZ · On-site

$48.25 - $62/hr

Client is seeking three identical Senior Specialty Systems Operations Engineers to join a Mainframe Production Support team supporting critical applications in a highly specialized, non-standard ...

Procom Consultants Group

Senior Java Developer

Seattle, WA

$65.25 - $83/hr

Senior Java Developer Job Details Senior hands-on Java Developer with at least 9 years experience in developing complex java programs Senior Java Developer Mandatory Skills Concurrent programming ...

Sensiple Inc.

Senior Mainframe Engineer

Columbus, IN · On-site

Senior Mainframe Engineer Work Location: Columbus, IN (Onsite) Duration: Long Term Contract ... Knowing Java/distributed solutions will be a plus. * Strong verbal and written communication skills ...

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How much do senior java mainframe developer jobs pay per hour?

As of Aug 11, 2026, the average hourly pay for senior java mainframe developer in the United States is $62.83, according to ZipRecruiter salary data. Most workers in this role earn between $55.05 and $70.19 per hour, depending on experience, location, and employer.
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Senior Java Mainframe Developer jobs near you
Infographic showing various Senior Java Mainframe Developer job openings in the United States as of August 2026, with employment types broken down into 79% Full Time, 3% Part Time, and 18% Contract. Highlights an 81% Physical, 4% Hybrid, and 15% Remote job distribution, with an average salary of $130,681 per year, or $62.8 per hour.

Senior COBOL /Mainframe Developer

Dew Softech Inc

Trenton, NJ • On-site

$49.25 - $63.25/hr

Other

Posted 4 days ago

Job description

Senior COBOL /Mainframe Developer

Location: Trenton, NJ (On site)

Position Type: Contract


In Person interview


*Local Candidates only. Candidates should have strong background in Cobol, ADABAS, and Natural. strong in JCL as well.

Job Description

Job Description

We are looking for a Senior Mainframe Developer / COBOL Senior Consultant to evaluate existing systems and user needs in order to analyze, design, recommend, and implement information system changes. This position will be a full-time contract role and is onsite in Trenton, NJ.

What You ll Do

  • Participate in development efforts supporting the project involving multiple legacy mainframe applications
  • Analyze existing legacy systems and provide code walkthroughs, logic analysis, and technical documentation to ITS development teams
  • Design, develop, modify, test, and maintain COBOL and NATURAL programs, along with associated JCL jobs, based on functional specifications and enhancement requests
  • Perform ongoing maintenance and enhancements to batch and online mainframe applications
  • Troubleshoot and resolve production issues, job failures, and system abends, including root cause analysis and corrective actions
  • Analyze ADABAS database structures, files, and access methods to support application development and system integration
  • Develop and maintain data feeds, file layouts, and interface processes between legacy systems and modernized ITS components
  • Participate in system design reviews, technical planning sessions, and code reviews
  • Produce and maintain technical documentation, including program specifications, data definitions, job flows, and system architecture documentation
  • Support system testing, integration testing, and user acceptance testing UAT
  • Implement best practices for mainframe development, including coding standards, version control, and change management
  • Assist with performance tuning and optimization of batch jobs, database access, and program execution
  • Provide production support for missioncritical applications and collaborate closely with analysts, architects, and development teams

What You ll Need

Required:

  • Advanced experience with COBOL programming in enterprise mainframe environments
  • Strong expertise in JCL development and job scheduling
  • Extensive experience with NATURAL programming
  • Working knowledge of ADABAS database architecture and file structures
  • Experience analyzing and maintaining large legacy mainframe codebases
  • Strong troubleshooting and debugging skills for batch and online applications
  • Experience with system integration, data interfaces, and file transfer processes
  • Proficiency with mainframe utilities, debugging tools, and job monitoring tools
  • Strong documentation and communication skills
  • Ability to work independently while coordinating with multiple technical teams

Preferred:

  • Experience supporting taxation or government revenue systems
  • Familiarity with CICS and online transaction processing environments
  • Experience with data migration or modernization projects involving legacy mainframe applications
  • Knowledge of mainframe security, scheduling systems, and source code management tools
  • Experience working within largescale enterprise or government IT environments

Physical Demands

  • Ability to safely and successfully perform the essential job functions consistent with the ADA and other federal, state, and local standards
  • Sedentary work that involves sitting or remaining stationary most of the time with occasional need to move around the office to attend meetings
  • Ability to conduct repetitive tasks on a computer, utilizing a mouse, keyboard, and monitor

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