Informix DBA

Job Description: We are looking for an experienced Senior Informix DBA having at least 7+ years of experience to join our team, providing round-the-clock (24x7x365) database administration and operational support for enterprise Informix database environments. The ideal candidate will have a strong track record in troubleshooting, performance tuning, and database operations of Informix on on-premise environments.

Key Responsibilities - Provide 24x7 production support for Informix databases by participating in rotational shifts and on-call duties. Administer, monitor, and maintain Informix databases in production and non-production environments. Implement and manage backup, recovery, tuning, high availability (HDR, ER, replication) and DR (Disaster Recovery) strategies. Perform routine health checks, proactively identify performance bottlenecks, and optimize queries and database configurations. Automate routine operations and reporting using mainframe utilities, scripting languages, or job scheduling tools (JCL, REXX, Python, Shell etc.). Manage database security, user permissions, and compliance with organizational policies. Coordinate and execute database patching, upgrades, and migrations with minimal downtime. Collaborate with application and infrastructure teams to support deployment activities and resolve database-related issues. Monitor and resolve incidents, including root cause analysis and documentation of resolutions. Automate routine operational tasks using scripts or management tools. Maintain accurate documentation of database procedures, configurations, and support processes for internal knowledge sharing.

Required Skills and Experience - Bachelor’s degree in Computer Science, Information Technology, or related field. 7+ years of hands-on experience as a DBA managing

Informix database

environments In-depth knowledge of Informix DB architecture, scaling, global distribution, partitioning, consistency models, and throughput management. Strong scripting

and database troubleshooting skills. Proactively analyze and optimize database performance—tuning queries, indexes, and configurations. Enforce security best practices, including authentication, access control, data encryption, and compliance monitoring Proficiency with mainframe utilities, JCL,

scripting

(REXX, Python, Shell or other), and automation tools. Support cloud database deployments, migrations, and upgrades within

Azure

and GCP environments, Automate and optimize routine operational tasks using scripting (Python, shell scripting, IaC etc) and Azure automation tools. Deep knowledge of high availability (HA), replication, backup/recovery, and failover strategies for Informix. Experience with database monitoring tools - Dynatrace, Azure Monitor, Nagios etc and automation frameworks such as Ansible and Terraform . Solid understanding of database security best practices. Proven experience with patching, upgrading, and migrating databases. Ability to manage multiple priorities in a fast-paced operations setting. Ability to support DB audit requirements and license management. Excellent communication and documentation skills.