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Mainframe Developer Jobs in Washington (NOW HIRING)

InterSources

Treasury Mainframe Developer

Mclean, VA · On-site

$50.25 - $64.75/hr

Treasury Mainframe Developer Location: Atlanta, GA, Tysons, VA, Hoboken, NJ, San Antonio, TX, New York, NY Duration: 2 + Months MoI: Video Remarks This role requires working onsite with a local team ...

Diverse Lynx

Mainframe Developer

Arlington, VA · On-site

$110K - $140K/yr

Mainframe Developer Louisville,KY/ Chicago,IL/ Dallas,TX / Arlington,VA Fulltime Salary Range--$110k to $140k PA Must Have Technical/Functional Skill • Design, develop, enhance, and support ...

Stem Xpert

Mainframe developer

Mclean, VA

$49.50 - $63.75/hr

Mainframe developer Location: Mclean, VA Duration: contract or full time Skillset : Experience in Mainframe (COBOL/JCL/DB2/IMS/CICS) - must have. Must have - Mainframe and IMS Good in analysis ...

Software Technology Inc

Mainframe Developer

Washington, DC · On-site

$55.50 - $71.25/hr

Other mainframe applications may be added later. Detailed Description * Expertise programming skills with COBOL * Experience with coding in Easytrieve * Ability to perform Developer activities ...

Syntricate Technologies

Mainframe Developer

Mclean, VA · On-site

$50.25 - $64.75/hr

Position-Mainframe Developer Duration-Contract Location- McLean, VA Jd • Develop COBOL code for application solutions based on technical program specifications utilizing Key and/or Netron Fusion ...

My3Tech Inc

Mainframe Engineer

Riverdale, MD · On-site

$49.25 - $63.25/hr

We are looking for an experienced Mainframe Developer with at least 5 years of expertise in COBOL, CICS, TSO, and JCL. The need is for 40hrs per week in a hybrid environment requiring a minimum for 2 ...

Atria Group LLC

Mainframe Developer

Chantilly, VA · On-site

$50.25 - $64.50/hr

... engineers from their employers. We represent only high caliber technical professionals who have committed to making a change required by career. Skills: Hogan, COBOL, DB2, JCL, VSAM, Mainframe ...

System One

Senior Mainframe Developer (COBOL)

Reston, VA · Remote

$83/hr

Senior Mainframe Developer (COBOL) Location: Primarily Remote Onsite Expectations: Monthly travel to Reston, VA for PI Planning Compensation: $83/HR Employment Type: W2 only About the Role We're ...

A.C. Coy

z/OS Mainframe Developer (Remote)

Alexandria, VA · Remote

$52.50 - $67.50/hr

Tier One Technologies has an immediate need for a z/OS Mainframe Developer to support our US Government client. * This is going to be a 100% remote position. * SELECTED CANDIDATES WITHOUT REQUIRED ...

A.C. Coy

z/OS Mainframe Developer (Remote)

Alexandria, VA · Remote

$52.50 - $67.50/hr

* Tier One Technologies has an immediate need for a z/OS Mainframe Developer to support our US Government client. * This is going to be a 100% remote position. * SELECTED CANDIDATES WITHOUT REQUIRED ...

A.C. Coy

z/OS Mainframe Developer (Remote)

Alexandria, VA · On-site +1

$52.50 - $67.50/hr

Tier One Technologies has an immediate need for a z/OS Mainframe Developer to support our US Government client. * This is going to be a 100% remote position. * SELECTED CANDIDATES WITHOUT REQUIRED ...

System One

Senior Mainframe Engineer

Merrifield, VA · Remote

Senior Mainframe Engineer Location: remote Pay rate: open to W2 and established 1099s Position type: multiyear contract We are currently seeking a Senior Mainframe Programmer/Support Analyst with a ...

Ensono

Senior Mainframe Developer

Annapolis, MD · On-site

$102K - $148K/yr

Senior Mainframe DeveloperRemote - United StatesJR013826 At Ensono, our Purpose is to be a relentless ally, disrupting the status quo and unleashing our clients to Do Great Things ! We enable our ...

Ensono

Senior Mainframe Developer

Washington, DC · On-site

$102K - $148K/yr

Senior Mainframe DeveloperRemote - United StatesJR013826 At Ensono, our Purpose is to be a relentless ally, disrupting the status quo and unleashing our clients to Do Great Things ! We enable our ...

Teradata

Sr. Mainframe Application Developer

Annapolis, MD · On-site

$48.50 - $62.25/hr

What You'll Do Teradata is looking for a skilled Mainframe Developer to join our Customer Developer Tools (CDT) organization. This role is critical in supporting and evolving our mainframe-based ...

Diverse Lynx

Mainframe Engineer

Mclean, VA · On-site

$50.25 - $64.75/hr

Mainframe Engineer The Mainframe engineer responsibilities include: Technical lead for Mainframe platform (z/OS| Dell Storage| IMS| DB2| RACF| CA JobTrac) to govern operations, changes and ...

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Mainframe Developer information

See Washington salary details

$11

$60

$81

How much do mainframe developer jobs pay per hour?

As of Jul 1, 2026, the average hourly pay for mainframe developer in Washington is $60.46, according to ZipRecruiter salary data. Most workers in this role earn between $53.37 and $68.61 per hour, depending on experience, location, and employer.

What is the difference between Mainframe Developer vs Mainframe Analyst?

AspectMainframe DeveloperMainframe Analyst
Primary RoleDesigning, coding, and testing mainframe applicationsAnalyzing and maintaining existing mainframe systems
Skills & CertificationsCOBOL, JCL, DB2, certifications like IBM Certified DeveloperCOBOL, JCL, system analysis, troubleshooting skills
Work EnvironmentDevelopment teams, coding in mainframe environmentsSupport teams, system analysis, user support
Industry UsageFinancial services, insurance, government agenciesFinancial institutions, healthcare, government agencies

While Mainframe Developers focus on creating and implementing mainframe applications, Mainframe Analysts primarily analyze, troubleshoot, and maintain existing systems. Both roles require similar technical skills and often work within the same industries, but their core responsibilities differ in development versus support and analysis.

What are some common challenges Mainframe Developers face when integrating legacy systems with modern applications?

Mainframe Developers often encounter challenges such as ensuring compatibility between legacy systems and newer technologies, managing data migration without disrupting business operations, and maintaining the security of sensitive data. Effective communication with cross-functional teams, such as application developers and infrastructure engineers, is essential to address these challenges. Staying updated on both mainframe and modern programming practices helps ease integration and ensures long-term system reliability.

What are Mainframe Developers?

Mainframe Developers are specialized software engineers who design, develop, maintain, and troubleshoot applications on mainframe computer systems, such as IBM's z/OS. They typically work with languages like COBOL, JCL, and CICS, and are responsible for ensuring the performance, security, and reliability of mission-critical business applications. Mainframe Developers are commonly employed in industries like banking, insurance, and government, where large-scale, high-volume transaction processing is essential.

What are the key skills and qualifications needed to thrive as a Mainframe Developer, and why are they important?

To thrive as a Mainframe Developer, you need expertise in programming languages such as COBOL, JCL, and SQL, along with a strong understanding of mainframe operating systems and batch processing concepts. Familiarity with tools like IBM z/OS, DB2, CICS, and version control systems is typically required, and certifications from IBM or related organizations can be beneficial. Strong problem-solving abilities, attention to detail, and effective communication skills help Mainframe Developers excel in troubleshooting and collaborating with cross-functional teams. These skills are crucial for maintaining, optimizing, and modernizing legacy systems that are vital to many large organizations’ operations.
What are the most commonly searched types of Mainframe Developer jobs in Washington? The most popular types of Mainframe Developer jobs in Washington are:
What are popular job titles related to Mainframe Developer jobs in Washington? For Mainframe Developer jobs in Washington, the most frequently searched job titles are:
What job categories do people searching Mainframe Developer jobs in Washington look for? The top searched job categories for Mainframe Developer jobs in Washington are:
What cities in Washington are hiring for Mainframe Developer jobs? Cities in Washington with the most Mainframe Developer job openings:
What are popular job titles related to Mainframe Developer jobs in WA? For Mainframe Developer jobs in WA, the most frequently searched job titles are:
Mainframe Developer jobs near you
Infographic showing various Mainframe Developer job openings in Washington as of June 2026, with employment types broken down into 80% Full Time, 12% Part Time, and 8% Contract. Highlights an 85% Physical, 5% Hybrid, and 10% Remote job distribution, with an average salary of $125,748 per year, or $60.5 per hour.
Treasury Mainframe Developer

Treasury Mainframe Developer

InterSources

Mclean, VA • On-site

$50.25 - $64.75/hr

Other

Posted 14 days ago

Job description

Treasury Mainframe Developer

Location: Atlanta, GA, Tysons, VA, Hoboken, NJ, San Antonio, TX, New York, NY Duration: 2 + Months MoI: Video Remarks This role requires working onsite with a local team member for the first week (Monday-Friday) and then will primarily work remotely the rest of the contract. Candidates preferred which reside in areas local to Atlanta, GA; Tysons, VA; Hoboken, NJ; San Antonio, TX; or New York, NY. The Treasury Mainframe Developer will design, implement, and maintain mainframe-based IT solutions that align with business needs and corporate strategies. This role involves collaborating with business units to gather requirements, coding and testing applications, and providing ongoing system support. The developer will work independently with moderate guidance, applying functional knowledge to resolve moderately complex problems and contribute to all phases of application programming.

Contract Details:

  • Design, develop, and implement new mainframe systems or modify existing applications to meet business requirements.
  • Collaborate with business units to gather requirements, analyze workflows, and document system specifications.
  • Perform coding, testing, debugging, and program refinement using COBOL, DB2, CICS, JCL, and related technologies.
  • Troubleshoot operational issues, provide technical support, and participate in system implementations and post-implementation maintenance.
  • Develop technical documentation and assist in training peers while ensuring adherence to established processes and standards.

Qualifications:

  • 5+ years of hands-on experience with COBOL, DB2, CICS, JCL, Batch, TSO/ISPF, and FIS Systematics core banking systems.
  • Proficiency with Serena ChangeMan ZMF; familiarity with Agile methodologies and IBM Mainframe Assembly language preferred.
  • Strong technical coding skills, problem-solving abilities, and effective communication skills.
  • Bachelor's degree in Information Technology, Computer Science, or related field (or equivalent experience).
  • Ability to work independently with moderate guidance; occasional after-hours and on-call availability required.
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About InterSources

Sourced by ZipRecruiter

In 2007, Our journey began as pioneers in the realm of technology and security. Since then, InterSources Inc. has evolved into a trusted partner, leading the way in Cloud Security, Cybersecurity, PLG Consulting, Digital Transformation, and Professional Services. With a rich history of excellence and a forward-thinking approach, we continue to secure your digital future and drive innovation. Explore our legacy of success and discover the possibilities that lie ahead.

Company size

51 - 200 Employees

Headquarters location

Fremont, CA, US

Year founded

2007

Social media

Twitter

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