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Aptonet

Database Engineer (Mid-Level)

Aptonet, Washington, District of Columbia, us, 20022

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Database Engineer (Mid-Level) – On-Site, Washington DC Clearance:

Active Public Trust required (DOJ Public Trust preferred)

Citizenship:

U.S. Citizenship required + minimum 3 years of U.S. residency



Contract:

6 months with possible extension

On-Call:

Required (primarily for incident support)

We are seeking a

Mid-Level Database Engineer

to support mission‑critical database environments across Oracle, MySQL, and PostgreSQL. The role involves managing and optimizing databases across

Linux, Windows, AWS, and on‑prem environments , supporting modernization initiatives, ensuring reliability, and driving performance improvements. This position works closely with development, infrastructure, and security teams.

Responsibilities

Support and standardize enterprise‑wide

Configuration Management Database (CMDB) .

Install, configure, and maintain

Oracle, MySQL, and PostgreSQL

across cloud and on‑prem systems.

Configure new databases, servers, and related infrastructure.

Manage

replication, clustering, and high‑availability

setups.

Perform

performance tuning, root‑cause analysis , and optimization.

Apply

Quarterly Patch Set Updates (PSUs)

for Oracle/MySQL.

Lead database

upgrades, patching, migrations, and refreshes .

Support

AWS DMS , cloud modernization, and automation initiatives.

Monitor performance metrics and proactively resolve bottlenecks.

Execute and validate

database backups

and ensure SLA compliance.

Maintain baseline activities, snapshots, and monthly maintenance.

Troubleshoot

deadlocks, slow queries , indexing issues, and integrity checks.

Manage user roles, permissions, and enforce security policies.

Implement and monitor

encryption, vulnerability fixes , and audit logs.

Participate in

DR testing, failover exercises , and backup validation.

Provide

on‑call production support

when required.

Conduct AWS R&D to support new tools and automation improvements.

Maintain detailed documentation and generate performance/growth reports.

Collaborate with application, infrastructure, and security stakeholders.

Certifications in

Oracle, MySQL, and PostgreSQL Administration .

Strong hands‑on experience with Oracle/MySQL/PostgreSQL on

Linux & Windows .

Proficiency with

AWS database services

(RDS, EC2‑hosted databases).

Expertise in installation, configuration, tuning, and maintenance.

Strong skills in

backup/restore, DR planning , and failover testing.

Ability to troubleshoot using execution plans and performance metrics.

Understanding of

security controls, encryption, audit logging , and remediation.

Experience with monitoring and database automation tools.

Ability to support production databases with on‑call responsibilities.

Strong communication and teamwork skills.

Experience deploying/managing databases across

AWS, on‑prem, and hybrid

environments.

Database migration, upgrades, and replication experience.

SQL optimization, query tuning, and index management.

Participation in monthly maintenance, patching cycles, and DR tests.

Qualifications

Bachelor’s degree or equivalent experience.

Up to 2 years of relevant experience (per role classification).

Must hold or obtain a

Public Trust clearance .

Must work

100% on‑site

in Washington, DC.

Work Environment: Government site (no remote options).

Interview Process: Phone/Teams interviews.

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