Senior Database Administrator

Karsun Solutions, LLC; New York (NY); On-site; USD 150,000 - 165,000; Full time

Job summary

Karsun Solutions is seeking a Senior Database Administrator to support databases that back customer production applications, development, and maintenance projects in a US-based AWS environment. You will manage RDS MySQL and PostgreSQL, implement security, backups, and performance tuning while collaborating with application teams.

The role requires extensive enterprise experience, AWS familiarity, and the ability to obtain a U.S. public trust clearance.

Qualifications

• Bachelor-level IT degree or equivalent, with relevant certifications preferred.
• 15+ years of experience in database administration within enterprise environments.
• Deep expertise with MySQL and PostgreSQL in AWS/RDS environments.
• Proficient with Linux-based database operations and open-source internals.
• Experience with DLM, data scrubbing, masking, and data comparisons.

Responsibilities

• Provide database administration for RDS MySQL and PostgreSQL in AWS.
• Install, configure, and maintain database instances and upgrade patches.
• Manage security, IAM authentication, VPC rules, and user privileges.
• Develop/manage database objects and optimize vacuum/buffer settings.
• Monitor performance and implement tuning and backups.
• Support development teams and stakeholders; ensure lifecycle management.
• Propose changes to applications and database structures with impact analysis.
• Provide sizing and capacity planning for new or altered databases.

Skills

MySQL administration

PostgreSQL administration

AWS cloud

Linux administration

Database security management

DLM understanding

Data scrubbing/masking/review

Security clearance eligibility

Education

Bachelor's degree in Computer Science or IT

Tools

Amazon RDS/Aurora

AWS DMS

Schema Conversion Tool (SCT)

KMS encryption setup

PostGIS / pg_stat_statements

Git / Jenkins / Ansible Tower / Artifactory

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/m/ ds/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.