Senior Software Engineer – Mainframe

Visa

Senior Software Engineer designing and developing mainframe software applications at Visa. Collaborating with teams to deliver secure and scalable technology solutions in fintech sector.

Posted 7/28/2026full-timeDenver • Colorado • 🇺🇸 United StatesSenior💰 $104,600 - $162,300 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in COBOL, JCL, and MVS/OS 390 batch application development, with a strong focus on coding best practices and debugging. Proficient in managing application enhancements and collaborating with cross-functional teams in the financial sector.

Highest-signal resume keywords

COBOL DevelopmentMVS/OS 390 Batch Application DevelopmentEFT Settlement KnowledgeAnalytical Problem-SolvingArtificial Intelligence (AI) Knowledge

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

COBOLJCLISPFESPCA7FILE-AIDConnex/AdvantageSettlement Application DevelopmentTransaction ProcessingCoding Guidelines

Soft Skills

Analytical SkillsProblem-Solving Skills

Tools & Technologies

Scheduling SoftwareDebugging ToolsSoftware Developer Tools

Industry Keywords

Financial SectorEFT SettlementTransaction ProcessingSoftware DevelopmentDevelopment Methodologies

About the role

Key responsibilities & impact

Collaborate with stakeholders to interpret requirements for project components and incorporate feedback into future designs or solution fixes.
Translate business requirements by verifying assumptions and escalating potential design issues to appropriate stakeholders.
Contribute to project estimation and escalate issues that may cause delays.
Develop, implement, and maintain code for products, services, or components, applying coding patterns, guidelines, and best practices.
Apply debugging tools to verify assumptions and proactively flag issues before they occur.
Participate in code reviews to ensure coding standards are followed and address routine pull requests.
Manage end-to-end lifecycle of application enhancements by working with architects, systems analysts, project managers, QA and other developers to successfully implement projects.
Leverage and build knowledge of software developer tools to create, debug, and maintain code for components.
Prepare technical documents, develop code, review code, build environment, review test results, and prepare plan for implementation.
Identify opportunities for future enhancements and refinements to standards, best practices and development methodologies.

Requirements

What you’ll need

Master's degree in Math, Science, Engineering, or Computer Science, Information Systems or related field
OR Bachelor's degree in Math, Science, Engineering, or Computer Science, Information Systems or related field AND minimum two (2) years of experience in a directly related field
OR Minimum five (5) years of directly related experience.
Development experience in COBOL, JCL, ISPF required
Development experience on MVS/OS 390 batch application required
Development experience using ESP, CA7 or another scheduling software
Development experience using FILE-AID
Development experience with Connex/Advantage settlement application or equivalent
Development experience with a Settlement/Reporting application in the Financial sector
Ability to solve complex software development/design issues
Ability to write clean, coherent code following established coding guidelines
Strong analytical and problem-solving skills
Good knowledge of EFT settlement and transaction processing
Hands-on knowledge of Artificial Intelligence (AI) and Large Language Models (LLM) is highly desirable.

Benefits

Comp & perks

Medical
Dental
Vision
401(k)
FSA/HSA
Life Insurance
Paid Time Off
Wellness Program