Mainframe Developer (COBOL, Natural, JCL, ADABAS, DB2) - REMOTE

Chandra Technologies, Inc; Washington (District of Columbia); On-site; USD 120,000 - 180,000; Full time

Job summary

Chandra Technologies, Inc. is seeking a Mainframe Developer to design, develop, test, and support enhancements to existing mainframe applications for North Dakota programs.

You will work hands-on with COBOL, Natural, JCL and databases such as ADABAS and DB2, with Oracle familiarity a plus. The role emphasizes translating business needs into technical solutions, thorough documentation, Agile collaboration, and a shared on-call rotation.

Qualifications

• 5+ years of mainframe development in enterprise settings.
• Proficient in COBOL and Natural development.
• Strong knowledge of JCL, batch processing, and error handling.
• Experience with ADABAS and DB2; Oracle familiarity a plus.
• Familiarity with Oracle concepts and SQL tooling.
• Experience with mainframe CI/CD and change tools (Endevor/ChangeMan/ISPW).
• Exposure to job scheduling platforms (Control-M/CA-7/TWS).
• State government or regulated industry experience is desirable.

Responsibilities

• Analyze requirements and translate them into practical technical designs.
• Create and update design documentation and walk through with stakeholders.
• Develop and maintain programs using COBOL and Natural; troubleshoot JCL.
• Produce test scenarios and perform unit, system, and acceptance testing.
• Participate in peer reviews and maintain runbooks and deployment notes.
• Provide production support in a 24x7 on-call rotation.

Skills

COBOL

Natural

JCL

ADABAS

DB2

Oracle concepts

SQL tooling

QMF

Visio

Testing discipline

Technical writing

Education

Bachelor’s degree in Computer Science

Information Systems

Tools

Endevor

ChangeMan

ISPW

Control-M

CA-7

Job description

Job Description

• Crop to Crop resumes are accepted

The Mainframe Developer will design, develop, test, and support enhancements to existing mainframe applications used across State of North Dakota programs. 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

Key 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 24×7 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 Skills & Qualifications

Technical

• 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.
• Solid testing discipline and defect management.

Communication & Delivery

• Strong technical writing (design docs, runbooks, change notes).
• Ability to explain technical concepts clearly to non-technical stakeholders.
• Detail-oriented, organized, and dependable follow-through.

Experience

• 5+ years of mainframe development in enterprise settings (or equivalent)

Preferred Qualifications

• Experience with Natural/ADABAS in public sector or large enterprise environments.
• Exposure to mainframe CI/CD and change tools (e.g., Endevor, ChangeMan, ISPW).
• Familiarity with job scheduling platforms (Control-M, CA-7, TWS).
• Integration experience (e.g., MQ, file-based interfaces, service layers).
• Prior participation in rotational on-call support.
• Informal mentorship or focal-point experience.
• State government or regulated industry experience.

Education

• Bachelor’s degree in Computer Science, Information Systems, or related field