Senior Software Engineer

Senior Mainframe Software Engineer

This senior level position is an integral member of an agile software engineering team responsible for designing, developing, enhancing, and supporting business critical enterprise applications. The engineer will provide deep mainframe expertise for high volume, file based financial processing and will participate throughout the software delivery lifecycle, from requirements and technical design through development, testing, implementation, and production support.

Software Design and Engineering

Create engineering specifications and technical designs for mainframe applications, batch programs, interfaces, data transformation processes, and supporting components.

Mainframe Development

Design, develop, test, implement, and maintain senior level mainframe solutions using COBOL, JCL, z/OS tools, batch processing patterns, and flat file interfaces.

Financial Data Processing

Maintain and enhance rules that standardize source data, map financial attributes and General Ledger accounts, validate required information, and transform transactions into client ready financial feeds.

Interface and Data Support

Develop and support inbound and outbound file processing, interface extracts and pass backs, translation and validation tables, control total files, journal entry outputs, and detail and summary files.

Production Support

Diagnose and resolve production amends, failed batch jobs, file processing errors, data discrepancies, mapping defects, balancing failures, and reconciliation issues. Perform safe restart and recovery activities and communicate impacts and status promptly.

Controls and Audit Ability

Preserve data integrity and financial control requirements through duplicate file checks, record and control file balancing, traceability, reconciliation, and evidence needed for audit or compliance reviews.

Integration Delivery

Partner with Finance, Accounting, Business Systems Analysts, data and integration teams, operations, architecture, testing, and product teams to deliver new interfaces, financial feeds, platform changes, and client or line of business onboarding.

Software Quality

Write code that adheres to coding standards, perform code reviews, develop unit and integration tests, and follow source control, build, deployment, testing, and change management practices.

Agile Execution

Participate in scrum ceremonies, sprint planning, backlog refinement, estimation, story creation, definition of done, acceptance criteria, task creation, status updates, and final execution of software changes.

Technical Leadership

Evaluate technical alternatives, identify feasibility and operational tradeoffs, safeguard functionality and performance, communicate blockers, document support procedures, and mentor associate and intermediate engineers.

Additional Responsibilities

Participate in scheduled production support and afterhour's implementation or incident coverage as required. Perform other duties as assigned or requested.

Required Qualifications

Education: Bachelor's degree in Computer Science, Computer Engineering, Computer and Information Science, or a closely related field, or equivalent relevant experience consistent with company hiring standards.

Experience: At least 5 years of professional software engineering experience designing, building, deploying, and supporting scalable, highly available, or business critical systems. Senior level knowledge of mainframe systems, demonstrated through substantial hands-on experience with z/OS application development, production batch operations, troubleshooting, implementation, and support. Strong hands-on experience developing and maintaining COBOL programs and JCL, including job streams, file based processing, dependency handling, abnormal end diagnosis, restart and recovery, and production implementation. Experience supporting large-scale batch applications that process financial, accounting, claims, billing, payment, or similarly controlled enterprise data. Experience with algorithm and data structure fundamentals, system design, technical feasibility evaluation, design patterns, and maintainable application architecture. Experience translating business requirements, technical specifications, prototypes, interface definitions, or user stories into working software solutions.

Skills/Competencies

Advanced proficiency in COBOL and JCL for enterprise mainframe batch development and support. Strong understanding of z/OS, mainframe datasets, flat file layouts, record processing, job dependencies, control files, batch scheduling, operational monitoring, and failure recovery. Working knowledge of SQL and relational data concepts. Experience with Oracle or PeopleSoft related tables and query tools are beneficial for financial translation and validation processing. Ability to analyze complex data flows across source extracts, translation processes, passback files, control totals, detail and summary outputs, data warehouse feeds, and General Ledger interfaces. Knowledge of professional software engineering practices across the full SDLC, including coding standards, unit testing, code reviews, source control, build and deployment processes, operations, and technical documentation. Experience with Agile/Scrum delivery and work management tools such as Jira, RTC, or Digital.ai Agility. Strong production support, root cause analysis, problem solving, and incident communication skills. Ability to collaborate with technical and nontechnical partners and translate financial or operational requirements into reliable technical solutions. Ability and willingness to mentor less experienced engineers and serve as a senior technical resource.

Key Attributes

Senior technical judgment, ownership, urgency, attention to detail, accountability, analytical thinking, clear communication, collaboration, adaptability, and a strong commitment to reliable financial processing and data integrity.

Preferred Qualifications

Master's degree in Computer Science, Computer Engineering, Information Systems, or a related field. 7 or more years working with varied technology systems, designing solutions, or developing applications in healthcare, financial services, or another highly controlled industry. Prior experience supporting General Ledger, accounting, reconciliation, journal entry, claims, billing, payment, or financial reporting applications. Experience with a mainframe based financial translation or interface application. Prior experience with the specific in-house application is not required. Experience with Oracle or PeopleSoft data structures, Informatica or enterprise data integration processes, managed file transfer patterns, data warehouse integrations, and enterprise job scheduling. Experience with translation tables, validation rules, financial mappings, balancing controls, duplicate file checks, reconciliation, and audit evidence. Knowledge of healthcare payer data and financial feeds. Exposure to Java, Python, JavaScript, C/C++, or other programming languages that support broader engineering work and modernization initiatives.