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Mainframe Developer Jobs in Seattle, WA (NOW HIRING)

Onramp Lab

Developer

Seattle, WA · On-site +1

We are seeking a skilled Developer to join our technical team. The ideal candidate will play a key role in building, maintaining, and enhancing our software products and applications. You will ...

Onramp Lab

Developer

Seattle, WA · Remote

We are seeking a skilled Developer to join our technical team. The ideal candidate will play a key role in building, maintaining, and enhancing our software products and applications. You will ...

Casne Engineering, Inc.

Software Developer II

Bellevue, WA · Remote

$90K - $120K/yr

We are seeking a highly skilled and motivated Software Developer with strong proficiency in Python and SQL to join our dynamic development team. This role is ideal for someone who thrives as both in ...

REV LLC

Data Migration Lead

Seattle, WA · On-site

Other current data migration, data engineering, or cloud certifications may be considered. * Preferred Experience * Mainframe-to-cloud migrations. * Large-scale enterprise data conversion. * Workers ...

REV LLC

Data Migration Lead

Seattle, WA · On-site

$90 - $105/hr

Other current data migration, data engineering, or cloud certifications may be considered. * Preferred Experience * Mainframe-to-cloud migrations. * Large-scale enterprise data conversion. * Workers ...

REV LLC

Enterprise Data Lead

Seattle, WA · On-site

$95 - $110/hr

Mentor and guide data architects, engineers, analysts, and technical teams. Required Qualifications ... Mainframe or legacy system modernization. * Enterprise metadata and data quality programs.

REV LLC

Enterprise Data Lead

Seattle, WA · On-site

Mentor and guide data architects, engineers, analysts, and technical teams. Required Qualifications ... Mainframe or legacy system modernization. * Enterprise metadata and data quality programs.

REV LLC

Data Architect

Seattle, WA · On-site

$80 - $1.1K/hr

... Data Engineer * Other current cloud/data architecture certifications may be considered. Preferred Experience * Enterprise-wide data architecture programs. * Large-scale legacy or mainframe ...

REV LLC

Data Architect

Seattle, WA · On-site

... Data Engineer * Other current cloud/data architecture certifications may be considered. Preferred Experience * Enterprise-wide data architecture programs. * Large-scale legacy or mainframe ...

AditiStaffing

Software Developer

Snoqualmie, WA

Role: Software Developer Location: Snoqualmie, WA - 4-6 years Application Development Experience including the skills outline below - Unix, Redhat preferred, light admin experience - Shell ...

Nastech Global

Technology Developer

Seattle, WA · On-site

Technology Developer Location: Seattle, WA(Onsite) Job Type: Full Time Must Have : Python, PowerShell, Bash, Java, JavaScript, Power Automate, GitLab Good to have : LowCode/No Code, Blue Prism ...

Damco Solutions

Application Developer

Seattle, WA · On-site

Damco Solutions is seeking an Application Developer who will play a key role in designing and extending applications used at Amazon. The role involves developing solutions and supporting multiple ...

Novinium

Software Developer

Kent, WA · On-site

As part of our IT team the Software Developer is responsible for creating new software products while updating and maintaining existing products to enable Novinium to maintain its technological edge.

DevSelect, LLC

.NET/Software Developer

Redmond, WA

Title: .NET/Software Developer Location: Redmond, WA Openings: 1 Type: Long-term contract Looking for a passionate individual that can thrive in a fast paced environment and can work well in a team ...

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All JobsMainframe Developer JobsMainframe Developer Jobs in Seattle, WA

Mainframe Developer information

See Seattle, WA salary details

$11

$60

$82

How much do mainframe developer jobs pay per hour?

As of Sep 2, 2026, the average hourly pay for mainframe developer in Seattle, WA is $60.74, according to ZipRecruiter salary data. Most workers in this role earn between $53.61 and $68.94 per hour, depending on experience, location, and employer.

What is a mainframe developer?

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?

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 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 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.

Is a mainframe developer a good career?

A mainframe developer is a specialized IT professional who maintains and develops applications on mainframe systems, which are used by large organizations for critical data processing. The role offers stable employment, competitive salaries, and opportunities to work with legacy technologies like COBOL and JCL, but it may require ongoing learning of evolving mainframe tools and certifications. Overall, it can be a good career for those interested in enterprise computing and system stability.

Is a mainframe developer hard to learn?

Mainframe developers typically need to learn specialized programming languages like COBOL and understand mainframe environments, which can have a steep learning curve for beginners. However, with prior programming experience and training, acquiring the necessary skills is achievable, and many employers offer on-the-job training or certification programs.

Is mainframe developer still in demand?

Mainframe developers are still in demand in industries such as finance, insurance, and government, where legacy systems remain critical. They typically work with COBOL, JCL, and mainframe environments, and demand depends on the organization's reliance on mainframe technology and ongoing maintenance needs.

What are the most commonly searched types of Mainframe Developer jobs in Seattle, WA?

The most popular types of Mainframe Developer jobs in Seattle, WA are:

What are popular job titles related to Mainframe Developer jobs in Seattle, WA?

For Mainframe Developer jobs in Seattle, WA, the most frequently searched job titles are:

What job categories do people searching Mainframe Developer jobs in Seattle, WA look for?

The top searched job categories for Mainframe Developer jobs in Seattle, WA are:

Mainframe Developer jobs near you
Infographic showing various Mainframe Developer job openings in Seattle, WA as of August 2026, with employment types broken down into 82% Full Time, 4% Part Time, and 14% Contract. Highlights an 83% Physical, 5% Hybrid, and 12% Remote job distribution, with an average salary of $126,349 per year, or $60.7 per hour.

Developer

Onramp Lab

Seattle, WA • On-site, Remote

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 10 days ago

Job description

About the company:
As an AI first company, our team excels across 3 specialized divisions. Our conversational AI division pioneers cutting edge customer engagement solutions. The publishing team focuses on sidehustles.com empowering global entrepreneurs with innovative content. Our AI driven media buying division optimizes campaigns for maximum ROI across digital channels with expertise in lead generation, referrals, and affiliates.
Job Description:
We are seeking a skilled Developer to join our technical team. The ideal candidate will play a key role in building, maintaining, and enhancing our software products and applications. You will collaborate with cross-functional teams to deliver reliable, scalable, and innovative solutions leveraging AI and cutting edge technologies.
Responsibilities:
  • Develop, test, deploy, and maintain web applications and software solutions
  • Collaborate with product managers, designers, and other developers to define and implement features
  • Write clean, efficient, and well-documented code
  • Troubleshoot and debug issues to ensure software quality and performance
  • Stay current with the latest industry trends and technologies to continuously improve development practices
  • Participate in code reviews and contribute to team knowledge sharing

Requirements
  • Bachelor's degree in Computer Science, Software Engineering, or related field, or equivalent experience
  • Proficient in programming languages such as JavaScript, Python, or similar
  • Experience with web frameworks and technologies (e.g., React, Node.js, Django)
  • Familiarity with database design and management (SQL or NoSQL)
  • Strong problem-solving skills and attention to detail
  • Ability to work effectively in a remote team environment
  • Good communication skills to collaborate with cross-functional teams
  • Experience with AI or machine learning technologies is a plus

Benefits
  • Health Care Plan (Medical, Dental & Vision)
  • Retirement Plan (401k, IRA)
  • Life Insurance (Basic, Voluntary & AD&D)
  • Paid Time Off (Vacation, Sick & Public Holidays)
  • Family Leave (Maternity, Paternity)
  • Short Term & Long Term Disability
  • Training & Development
  • Work From Home
  • Free Food & Snacks
  • Wellness Resources
  • Stock Option Plan

Apply