Senior Installation Package Development & Validation Engineer (Contract)

Senior Installation Package Development & Validation Engineer (Contract role) Focus Areas : MSI InstallShield (Windows) & Linux/Unix InstallAnywhere Automation Role Type: Contractor – 6 months Primary Focus: Installer Engineering, Packaging & Release Validation InstallShield (MSI), InstallAnywhere, VBScript / Custom Actions, Java / JDBC, Gradle (Kotlin DSL), GitHub Actions, Active Directory / gMSA, Docker Role Overview We are seeking a Senior Installation Package Specialist to own, modernize, and automate the multi-platform installer ecosystem. In this critical role, you will be responsible for end-to-end packaging engineering from developing Windows InstallShield (.msi) and Linux/Unix InstallAnywhere (.iap_xml) installer payloads to orchestrating custom build tasks in Gradle, automating database provisioning via JDBC, and ensuring seamless enterprise upgrades across thousands of mission-critical customer environments. You will collaborate closely with Core Engineering, Security, and Quality Engineering teams to eliminate installation roadblocks, enhance silent/unattended rollout capabilities, support modern enterprise security standards (gMSA, CyberArk PAM), and maintain zero-downtime upgrade integrity. Key Responsibilities Dual-Platform Installer Development & Maintenance Windows Packaging (InstallShield MSI): Maintain and enhance InstallShield project files (.ism) for flagship Windows products. Linux/Unix Packaging (InstallAnywhere): Develop and configure Revenera InstallAnywhere (.iap_xml) project files for Unix based repo installers. Custom Action Engineering: Design, write, and maintain: Windows VBScript / JScript Custom Actions: Develop Immediate and Deferred custom actions (with elevated privilege handling and rollback logic) for configuration gathering, service registration, and file manipulation. Java Custom Actions: Develop compiled Java classes for InstallAnywhere runtime execution to handle cross-platform setup logic. Enterprise Security & Silent Deployment Logic Group Managed Service Accounts (gMSA): Maintain and validate installer logic for running core services under Windows gMSA credentials in both UI and Silent Response File modes. Property File Retention & Upgrade Reliability: Fix complex upgrade bugs to ensure property files (master.props, db.props) are safely backed up, migrated, and never overwritten or deleted during reinstalls/upgrades. Version String Comparison Logic: Implement precise multi-digit semantic version comparison logic (e.g., 4-digit releases like 2026.3.4.19) to prevent upgrade blockage or false "newer version already installed" errors. Database Provisioning & Schema Orchestration JDBC Engine Integration: Work with the shared DB assistant Java CLI tool to orchestrate database connectivity validation and schema deployment. Multi-Dialect DDL Alignment: Ensure installer schema execution scripts correctly apply to repository tables, supporting emerging DB…