Database Administrator Sr Principal, DB2 Required

Database Administrator Sr Principal

Advance how our customers operate while you advance your career. Join GDIT as a Database Administrator Sr Principal and build an impactful career in enterprise IT, collaborating with people who are driven and resourceful like you.

Meaningful Work and Personal Impact

We're seeking a seasoned Senior Database Administrator (DBA) for the NCMMIS program with deep expertise in IBM Mainframe (z/OS), Db2 (z/OS and LUW), Microsoft SQL Server, PostgreSQL, and AWS Cloud services. In this role, you'll own the reliability, performance, security, and modernization of mission-critical data platforms across on-prem, mainframe, and cloud. You'll lead complex migrations, optimize large-scale databases, automate operations, and partner closely with application, security, and infrastructure teams to deliver resilient, compliant, and cost-effective data services.

Key Responsibilities

• Platform Ownership & Operations
• Performance & Reliability
• Security, Compliance & Governance
• Automation, DevOps & Modernization
• Consulting & Leadership

What You'll Need to Succeed

Bring your technology expertise and drive for innovation to GDIT. The Database Administrator Sr Principal must have:

• 8–12+ years of progressive DBA experience across Db2 (z/OS & LUW), SQL Server, and PostgreSQL, including production ownership in enterprise environments.
• Hands-on mainframe experience: TSO/ISPF, JCL, Linux, Db2 utilities, and performance analysis using SMF/IFC data and Db2 traces.
• Proven AWS experience running databases on RDS/Aurora and EC2, with strong knowledge of networking, storage, IAM, and monitoring (CloudWatch).
• Expert-level performance tuning and query optimization; adept with execution plans, indexing, partitioning, and statistics maintenance.
• Strong command of backup/restore, replication, HA/DR, and business continuity across on-prem and cloud.
• Practical automation skills with PowerShell, Python, Bash, and mainframe scripting (REXX, JCL).
• Solid grasp of security, compliance, and audit practices; experience with encryption, RBAC, auditing, and key management.
• Excellent communication, stakeholder management, and incident leadership under pressure.

Preferred Qualifications

• Certifications: AWS Certified Database – Specialty, AWS SysOps Administrator, AWS Certified Data Engineer - Associate, IBM Db2 certifications, Microsoft DP-300 (Administering Relational Databases on Microsoft Azure), PostgreSQL Professional.
• Experience with modern data ecosystems (e.g., Kafka, Snowflake, Redshift) and ETL/ELT tooling (e.g., Informatica, dbt, SSIS, AWS Glue).
• Experience with Observability tooling (e.g., CloudWatch, Grafana/Prometheus, Datadog, Dynatrace, Idera, Redgate).
• Familiarity with ITIL, Agile, and DevOps practices; prior work enabling database change automation and release governance.

Core Competencies

• Systems Thinking: Balances reliability, performance, cost, and risk across hybrid environments.
• Operational Excellence: Builds resilient processes and automation-first solutions.
• Security Mindset: Designs for least privilege and auditability; anticipates threats.
• Collaboration: Influences cross-functional decisions and mentors teammates.
• Ownership & Judgment: Drives outcomes; makes clear trade-offs under ambiguity.

Tools & Technologies

• Mainframe: z/OS, TSO/ISPF, JCL, RACF/TSS, IBM Data Studio, Db2 utilities (RUNSTATS, REORG, COPY/RECOVER)
• Relational DBs: Db2 LUW, SQL Server (SSMS/DMVs), PostgreSQL (psql/EXPLAIN), Redgate/Idera
• Cloud: AWS RDS/Aurora, EC2, S3, KMS, CloudWatch, Parameter Store/Secrets Manager, Injestion and Integration Services
• Automation/Infra: Terraform/CloudFormation, Ansible, Git, CI/CD (Azure DevOps/GitHub Actions)
• Data Modeling: Idera ER/Studio, Erwin Data Modeler