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Application Developer - Mainframe

Prominent TechnologyUnited States🇺🇸United States

Quick overview

Salary$53 - $59/hr
SeniorityMid Senior
Work modeHybrid
LocationUnited States
OraclePL/SQLSQLCOBOLAgileData AnalysisCI/CD

Job description

No visa sponsorship is available for this opportunity!
C2C or 1099 not available for this opportunity!
Candidates MUST be on Prominent payroll as a W2 during the contract phase.
Prominent is looking for a Mainframe Developer with Cobol and Natural experience for a REMOTE long term contract. The Mainframe Developer will design, develop, test, and support enhancements to existing mainframe applications. The role is primarily hands-on development with COBOL, Natural, JCL, and databases such as ADABAS and DB2 (Oracle familiarity is a plus). The ideal candidate translates business requirements into practical technical solutions, produces clear documentation, collaborates in Agile teams, and participates in a shared on-call rotation.
Responsibilities
Technical Analysis & Design (mid-to-senior scope)
  • Analyze requirements and produce practical technical designs for moderate to complex changes within established patterns/standards.
  • Create and update design documentation (program specs, data mappings, flow diagrams) and walk through with stakeholders for approval.
  • Recommend incremental improvements that align with existing architecture (no enterprise architecture ownership).
Coding & Configuration
  • Develop and maintain programs using COBOL and/or Natural.
  • Author and troubleshoot JCL for batch processes, job streams, and error handling.
  • Build test scenarios and perform unit, system, and acceptance testing; document results.
  • Participate in peer code reviews and apply feedback to improve quality.
  • Maintain runbooks, deployment notes, and solution documentation.
  • Provide production support in a rotational 247 on-call model; perform root-cause analysis and implement fixes.
Project & Team Collaboration
  • Provide time and effort estimates for assigned work items and small enhancements; assist on estimates for moderate projects.
  • Actively participate in Agile ceremonies (stand-ups, planning, reviews, retros).
  • Document tickets, decisions, and work acceptance in team tools.
  • Mentor peers informally on standards and procedures as needed (no formal people leadership).

Required
  • Bachelors degree in Computer Science, Information Systems, or related field
  • 5+ years of mainframe development in enterprise settings (or equivalent).
  • Proficient in COBOL (maintenance and net-new development).
  • Proficient in Natural (maintenance and net-new development).
  • Strong working knowledge of JCL (batch authoring, scheduling handoff, troubleshooting).
  • Experience with ADABAS and DB2 (queries, data analysis, understanding of performance basics).
  • Familiarity with Oracle concepts and SQL tooling (e.g., PL/SQL Developer or equivalent).
  • Comfortable with tools such as QMF, Visio (or equivalents) for data and design work.
  • Exposure to mainframe CI/CD and change tools (e.g., Endevor, ChangeMan, ISPW).
  • Familiarity with job scheduling platforms (ControlM, CA7, TWS).
  • Integration experience (e.g., MQ, file-based interfaces, service layers).
  • Solid testing discipline and defect management.
  • Strong technical writing (design docs, runbooks, change notes).

Preferred Qualifications
  • Experience with Natural/ADABAS in public sector or large enterprise environments.
  • Prior participation in rotational on-call support.
  • Informal mentorship or focal-point experience.
  • State government or regulated industry experience.

Anticipated hourly rate while on contract is expected to be in the $53-59hr range.

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