Senior COBOL Developer

About the Position

We are seeking an experienced Senior COBOL Developer with deep expertise in mainframe technologies to design, maintain, and modernize large-scale legacy systems. The role involves end-to-end ownership of batch and online applications, reverse engineering complex legacy logic, resolving production issues, and ensuring high performance, stability, and business continuity. Strong business understanding-especially in Life Insurance and Pensions domains-is highly desirable.

Responsibilities

• Application Development & Maintenance

  • Design, develop, enhance, and maintain COBOL applications (Batch and Online).
  • Work extensively with CICS, JCL, DB2, and IMS to support enterprise-scale systems.
  • Ensure adherence to coding standards, security practices, and mainframe best practices.
  • Perform impact analysis and effort estimation for enhancements and defect fixes.

• Batch & Online Production Support

  • Provide L2/L3 production support for batch jobs and online transactions.
  • Analyze and resolve abend issues, data inconsistencies, and performance bottlenecks.
  • Handle high-priority incidents with minimal turnaround time and root cause analysis.
  • Coordinate with infrastructure, DBAs, and operations teams during production issues.

• Legacy Code Analysis & Reverse Engineering

  • Reverse engineer complex and undocumented legacy logic to understand business rules.
  • Modernize, refactor, or optimize existing code while preserving business behavior.
  • Create and maintain technical documentation, flow diagrams, and decision logic.

• Business & Domain Collaboration

  • Work closely with business analysts and stakeholders to clarify requirements.
  • Translate business requirements into technical designs and solutions.
  • Apply strong domain knowledge (Life Insurance / Pensions) to ensure correct implementation of regulatory, policy, and financial rules.
  • Support audits, compliance checks, and regulatory-driven changes.

• Performance Tuning & Non-Functional Quality

  • Identify and resolve performance issues in batch and online environments.
  • Tune SQL queries, DB2 access paths, and file processing logic.
  • Handle non-functional defects related to performance, scalability, availability, and resilience.
  • Support system upgrades, migrations, or mainframe modernization initiatives.

• Mentorship & Technical Leadership

  • Act as a technical SME for mainframe systems and legacy applications.
  • Mentor junior developers and reviewers on COBOL, JCL, DB2, and CICS.
  • Lead code reviews and knowledge transfer sessions.
  • Provide inputs to architecture decisions and modernization roadmaps.

Requirements

Must Have

• Required Technical Skills:
  • Languages / Technologies:
    • COBOL (Batch & Online)
    • IMS (DB / DC)
  • Mainframe Concepts:
    • VSAM, File handling
    • Abend analysis
    • Job scheduling and batch cycles
    • Online transaction processing
  • Debugging & Support:
    • Batch and online troubleshooting
    • Root cause analysis
    • Production support best practices
  • Performance & Quality:
    • SQL tuning (DB2)
    • Program and job optimization
    • Non-functional defect resolution
  • Domain & Functional Skills:
    • Strong understanding of business processes and workflows
    • Life Insurance & Pensions domain knowledge is highly preferred:
      • Policy administration
      • Premiums, claims, annuities, and payouts
      • Regulatory and compliance-driven logic
  • Soft Skills:
    • Strong analytical and problem-solving skills
    • Ability to work with minimal documentation
    • Excellent communication with technical and non-technical stakeholders
    • Ownership mindset and accountability in production environments
    • Ability to work independently and lead small technical teams

Nice to Have

• Experience with legacy modernization initiatives
• Exposure to Agile / DevOps practices in mainframe environments
• Experience working with offshore/onshore teams
• Knowledge of scheduling tools (e.g., CA-7, Control-M)

We Offer

• Languages:
  • Danish: C1 Advanced
  • English: C1 Advanced

About the Company

DXC Luxoft is a leading global provider of digital transformation and technology services. We empower businesses to thrive in the digital era by leveraging cutting-edge technologies and innovative solutions.