Senior Database Administrator

Karsun Solutions, LLC; Virginia (MN); On-site; USD 150,000 - 165,000; Full time

Job summary

Karsun Solutions is seeking a Senior Database Administrator to support databases for customer production applications, software development, and maintenance projects. You will administer RDS MySQL and PostgreSQL in AWS, configure security, manage backups, and optimize performance across Linux-based environments.

The role requires deep DB expertise, strong problem-solving, and collaboration with solution delivery teams. A U.S.

Qualifications

• Bachelor's degree in Computer Science or IT field.
• 15+ years of relevant experience in DB administration.
• Expertise with MySQL (v5.7, 8.0) and PostgreSQL (v12-16).
• Significant experience with Amazon RDS or Aurora managed services.
• Deep Linux DB environments and open-source internals.
• Experience in Database Lifecycle Management (DLM).
• Experience in Data Scrubbing, Data Masking, Data Compare and Review.
• Experience improving DB user/systems authentication robustness.
• AWS and/or Azure familiarity.
• Relevant certification.

Responsibilities

• Provide database administration for RDS MySQL and PostgreSQL in AWS Cloud.
• Install/configure/maintain database instances and manage engine versions.
• Manage DB security and IAM, VPC security groups, and user permissions.
• Develop/maintain DB objects and optimize settings (Postgres vacuum / MySQL buffers).
• Monitor and optimize DB performance and tuning.
• Manage DB backup strategies and compliance.
• Support customers and development teams on DB-related issues.
• Maintain DB Lifecycle Management processes per specs.
• Provide impact info on DB changes to applications and data models.
• Provide sizing and growth projections for new/existing DBs.
• Participate in meetings with Solution Delivery staff and stakeholders.
• Collaborate with team to optimize clusters, replicas, backups.

Skills

MySQL

PostgreSQL

RDS/Aurora

Linux DB

DB Security/IAM

DLM

Data masking/scrubbing

HA architectures

Certification

Clearance readiness

Education

Bachelor's degree in Computer Science/IT

Alternative: Engineering/Math/Science degree

Tools

AWS

Azure

DMS

SCT

GIT

Ansible Tower

Artifactory

Jenkins

KMS

SSL/TLS

Job description

Why Karsun?

Join Karsun Solutions to grow your career with the company transforming possible for the US Government.

At Karsun, collaboration drives our community. We're committed to building an environment where team members from diverse backgrounds can innovate, learn and grow with us. Here at Karsun, the only limit to your potential is the limit of your curiosity.

Join Team Karsun, and Find Your Next!

Summary

As a Senior Database Administrator, you will provide services for databases that support the customer's production applications, software development, and application maintenance projects.

What You'll Be Doing:

• Provide database administration to RDS MySQL and PostgreSQL databases engines within the AWS Cloud environment.
• Install, configure, and maintain database instances, including managing RDS Parameter Groups, Option Groups and coordinating engine version upgrades/patches.
• Manage database security and user permissions and privileges in accordance with application/database requirements including IAM Database authentication, VPC security groups and user permissions/privileges.
• Develop and/or maintain database objects (tables, views, indexes) and optimize Vacuum (Postgres) or Buffer Pool (MySQL) settings.
• Monitor and optimize database performance and tuning
• Manage and ensure compliance with database backup strategies
• Customer support to database and associated application development team, owners, and user stakeholders
• Maintain Database Lifecycle Management processes detailed by customer specifications
• Provide impact information on proposed changes to application and it's database structure
• Provide schedule and resource requirements to stakeholders concerning proposed changes to the application and associated database
• Provide sizing recommendations for any new databases or changes to existing databases, including user/data growth projection and the impact on the server memory and performance characteristics
• Participate in meetings with Solution Delivery Service staff and stakeholders
• Work with other database administrators to ensure optimal efficiency and optimization of databases, server clusters, replications, back-up strategies, and database services to customer and its customers.

Required Qualifications:

• Bachelor's degree in Computer Science or other IT degree; Engineering, math, and/or science degrees are acceptable substitute degrees
• Minimum of 15 years of relevant experience
• Expertise in MySQL (v5.7, 8.0) and/or PostgreSQL (v12-16) administration in an enterprise environment
• Significant experience with Amazon RDS or Aurora managed services.
• Deep understanding of Linux-based database environments and open-source database internals.
• Experience in Database Lifecycle Management (DLM)
• Experience in Data Scrubbing, Data Masking, Data Compare and Review.
• Experience in improving Database user / systems authentication robustness.
• AWS and/or Azure experience
• Relevant certification
• The ability to successfully obtain and maintain a U.S. Suitability/Public Trust Background Clearance

Preferred Qualifications:

• Experience:
• Operating in traditional and agile project models
• Experience with PostgreSQL extensions (e.g., PostGIS, pg_stat_statements) or MySQL storage engines.
• Knowledge of High Availability architectures (RDS Multi-AZ) and Global Databases.
• Setup and maintenance of AWS KMS encryption at rest and SSL/TLS in transit.
• Proficiency with AWS DMS (Database Migration Service) and Schema Conversion Tool (SCT).
• DevOps toolchain services (GIT, Ansible Tower, Artifactory, Jenkins)
• Amazon Web Services familiarity (EC2, RDS, S3, Migration Services)

Things to Know:

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.

Salary Range

The proposed salary range for this role is $150,000 to $165,000 USD. The salary range provided is a good faith estimate representative of all experience levels. Karsun considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate's work experience, location, education/training, and key skills.

Clearance Information

This position requires the eligibility to obtain a security clearance. The Defense Industrial Security Clearance Office (DISCO), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website:https://www.state.gov/mds/clearances/c10978.htm

Location

To be considered for this role, you must reside in one of the following states: CA, CO, DC, FL, GA, IL, MD, NJ, NY, NC, OH, OK, PA, SC, TX, VA, WV.

Work Authorization

Applicants must be authorized to work in the U.S.

Statement on AI and Hiring Process

At Karsun, we are committed to a fair and equitable hiring process. We do not use artificial intelligence to make decisions on candidates, scan resumes, or source potential hires. Applicants are reviewed by our talent acquisition team and hiring managers to ensure a thorough evaluation based on skills, experience, and alignment with our company values. Our hiring decisions are made with human judgement, ensuring fairness and transparency throughout the process.