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Senior Mainframe Developer Jobs in Bothell, WA (NOW HIRING)

Robert Half is seeking a Senior COBOL Mainframe Developer with AWS experience to support an established insurance and financial services organization. This role focuses on building APIs and ...

New

Mainframe Specialist

Kirkland, WA · On-site

$70K - $196K/yr

Partner with cross-functional teams-architects, developers, QA, and business analysts-to gather ... Collaborate with senior leadership to secure executive sponsorship and organizational buy-in for ...

Partner with cross-functional teams-architects, developers, QA, and business analysts-to gather ... Collaborate with senior leadership to secure executive sponsorship and organizational buy-in for ...

Mainframe Specialist

Redmond, WA · On-site

$70K - $196K/yr

Partner with cross-functional teams-architects, developers, QA, and business analysts-to gather ... Collaborate with senior leadership to secure executive sponsorship and organizational buy-in for ...

About the role As a Sr. Infrastructure Engineer I , you will play a critical role in the Mainframe ... Exposure to infrastructure automation and DevOps practices. * Strong working knowledge of mainframe ...

Sr. Data/Cloud Engineer

Seattle, WA · On-site

$130K - $156K/yr

The Sr. Data/Cloud Engineer will design, build, test, and deploy data ingestion connectors and ETL ... and mainframe extracts. • Define source-specific ingestion patterns (batch windows, CDC ...

C++ Developer(Senior Level)

Redmond, WA · On-site

$55 - $74/hr

The main function of a Software Engineer is to design, develop, implement, test, and maintain business and computer applications software or specialized utility programs including mainframe and ...

Founding GTM Leader

Seattle, WA · On-site

$120 - $160/hr

The world's largest enterprises run on decades-old mainframe systems -- COBOL, RPG, PL/I ... We're a small team by design -- founded by three ex-Google engineers, backed by top-tier venture ...

New

... senior data leadership experience. * Demonstrated experience leading large-scale data migration or ... engineering, or cloud certifications may be considered. * Preferred Experience * Mainframe-to-cloud ...

Data Migration Lead

Seattle, WA · On-site

$90 - $105/hr

... senior data leadership experience. * Demonstrated experience leading large-scale data migration or ... engineering, or cloud certifications may be considered. * Preferred Experience * Mainframe-to-cloud ...

Data Migration Lead

Seattle, WA · On-site

$124 - $145/hr

... senior data leadership experience. * Demonstrated experience leading large‑scale data migration ... engineering, or cloud certifications may be considered. * Preferred Experience * Mainframe-to-cloud ...

Senior Mainframe Developer information

See Bothell, WA salary details

$42

$64

$74

How much do senior mainframe developer jobs pay per hour?

As of Sep 4, 2026, the average hourly pay for senior mainframe developer in Bothell, WA is $64.45, according to ZipRecruiter salary data. Most workers in this role earn between $60.48 and $70.38 per hour, depending on experience, location, and employer.

What is a senior mainframe developer?

Senior Mainframe Developers are experienced professionals who design, develop, and maintain mainframe systems—large-scale computers used by organizations for critical applications, bulk data processing, and enterprise resource planning. They are proficient in languages like COBOL, JCL, and Assembler, and often work with databases and transaction processing systems. Their responsibilities include troubleshooting system issues, optimizing performance, mentoring junior developers, and ensuring the reliability and security of mainframe operations.

What are some common challenges faced by senior mainframe developers when integrating legacy systems with modern technologies?

Senior Mainframe Developers often encounter challenges when integrating legacy mainframe systems with newer technologies such as cloud platforms, APIs, or microservices. These challenges include ensuring data consistency, maintaining system security, and minimizing downtime during migrations. Collaboration with cross-functional teams, such as infrastructure engineers and application developers, is key to developing seamless integration solutions. Staying up-to-date with modernization tools and best practices can help address these complexities and support the organization's digital transformation goals.

What are the key skills and qualifications needed to thrive as a senior mainframe developer, and why are they important?

To thrive as a Senior Mainframe Developer, you need deep expertise in mainframe programming languages (like COBOL, JCL, and PL/I), systems analysis, and a strong understanding of legacy application architectures, typically supported by a degree in computer science or related experience. Familiarity with tools such as IBM z/OS, DB2, CICS, and version control systems is essential, along with relevant certifications like IBM Certified System Programmer. Excellent problem-solving, communication, and leadership skills help you collaborate effectively and mentor junior developers. These skills are crucial for maintaining mission-critical systems, ensuring reliability, and guiding modernization efforts in complex enterprise environments.

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

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

What cities near Bothell, WA are hiring for Senior Mainframe Developer jobs?

Cities near Bothell, WA with the most Senior Mainframe Developer job openings:

Mainframe Systems Programmer

Robert Half

Bellevue, WA • Remote

$60 - $65/hr

Temporary

Posted yesterday

New


Job description

Robert Half is seeking a Senior COBOL Mainframe Developer with AWS experience to support an established insurance and financial services organization. This role focuses on building APIs and integration layers to expose data from legacy mainframe systems, while supporting ongoing maintenance (KTLO) and new capability development.

If you feel this aligns with your background, apply today!

Schedule: Core availability 9:00 AM – 3:00 PM PST

Duration: 6-month contract, likely to extend or convert

Location: 100% Remote

Pay rate: $60-$65/hourly

Candidates must be authorized to work in the U.S. without the need for sponsorship.

Job Duties:

  • Develop, enhance, and maintain IBM mainframe applications supporting legacy insurance and retirement systems
  • Build and support APIs and integration layers to expose mainframe data and functionality to downstream platforms
  • Maintain and enhance COBOL-based systems, including batch processing and online transactions
  • Support KTLO (Keep the Lights On) work, production stability, and ongoing system maintenance
  • Design and implement AWS-based solutions as needed to support integrations and platform capabilities
  • Participate in technical design discussions to ensure system reliability, scalability, and long-term stability
  • Contribute to new capability development on top of existing legacy systems (not net-new policy platforms)
  • 10+ years of hands-on IBM mainframe development experience in production environments
  • Strong experience with: COBOL, CICS, DB2, JCL, VSAM
  • Experience building or supporting APIs on the mainframe
  • Strong understanding of legacy systems, batch processing, and transaction-based architectures
  • Hands-on AWS experience is required, (AWS architect-level experience is not required.)
  • Experience with SOAP and/or REST integrations
  • Ability to work independently in a distributed team environment without dedicated AWS-only engineers

Nice-to-Haves:

  • Experience with Vantage or similar annuity / insurance policy administration systems
  • Prior experience in insurance or financial services environments
  • Familiarity with AI-assisted development tools



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About Robert Half

Sourced by ZipRecruiter

Founded in 1948, Robert Half pioneered the idea of professional talent solutions to connect opportunities at great companies with highly skilled job seekers. As business needs changed, we evolved to offer specialized talent solutions for finance and accounting, technology, administrative and customer support, creative and marketing, and legal fields. In 2002, we introduced our subsidiary, Protiviti, a global independent risk consulting and internal audit service, to support companies as they faced more strategic business challenges.

Industry

Recruiting and staffing services

Company size

10,000+ Employees

Headquarters location

San Ramon, CA, US

Year founded

1948