> Markdown version of [/jobs/ext/1505851-database-engineer-3](https://www.wearedevelopers.com/jobs/ext/1505851-database-engineer-3). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Database Engineer 3 - **Company:** RealmOne - **Location:** Columbia, MD, United States - **Experience:** Expert - **Salary:** $161,000.0 - $210,000.0 - **Contract:** Permanent contract - **Skills:** Big Data, Cloud Computing, Databases, Database Design, Database Schema, Database Storage Structures, Computer Data Storage, PostgreSQL, Open Database Connectivity, Object-Oriented Software Development, Oracle (Applications), Data Streaming, Information Technology - **Published:** July 30, 2026 - **Apply:** https://diversityjobs.com/main/sendform/8/8/28176/1/17760167?backUrl=%2Fcareer%2F17760167%2FDatabase-Engineer-3-Maryland-Columbia ## About the Role * Ten (10) years experience as a DE in programs and contracts of similar scope, type, and complexity is required. * Bachelor's degree in a technical discipline from an accredited college or university is required. Certifications Required: * Requires DoD 8570 compliance Information Assurance Technical (IAT) Level II certification. Position requires active Security Clearance with appropriate Polygraph ## Description Provides technical expertise for database design, development, implementation, information storage and retrieval, data flow and analysis. Develops relational and/or Object-Oriented databases, database parser software, and database loading software. Projects long-range requirements for database administration and design. Responsible for developing a database structure that fits into the overall architecture of the system under development and has to make trades among data volumes, number of users, logical and physical distribution, response times, retention rules, security and domain controls. The DBE works primarily at the front end of the life cycle requirements through system acceptance testing and Initial Operational Capability (IOC). Develops requirements from a project's inception to its conclusion for a particular business and Information Technology (IT) subject matter area (i.e., simple to complex systems). Assist with recommendations for, and analysis and evaluation of systems improvements, optimization, development, and/or maintenance efforts. Translates a set of requirements and data into a usable document by creating or recreating ad hoc queries, scripts, and macros; updates existing queries, creates new ones to manipulate data into a master file; and builds complex systems using queries, tables, Open Database Connectivity and database storage and retrieval using Cloud methodologies. Both administrator and engineer support, but a focus on data optimization; dealing with large data sets; seeking Oracle efficiencies Opportunity to optimize an Oracle system to operate at peak performance and efficiency; Shape how massive and usual data types are processed, stored, and leveraged. The Level 3 Database Engineer shall possess the following capabilities: * Support the database design, development, implementation, information storage and retrieval, data flow and analysis activities * Support the analysis and evaluation of system improvements, optimization, development and/or maintenance efforts * Support the development of long and short term requirements for database administration and design * Assist in developing databases, database parser software, and database loading software * Translate a set of requirements and data into a usable database schema by creating or recreating ad hoc queries, scripts and macros, updates existing queries, creates new ones to manipulate data into a master file * Assist in developing database structures that fit into the overall architecture of the system under development * Lead development of database structures that fit into the overall architecture of the system under development * Lead development of databases, database parser software, and database loading software * Develop requirement recommendations from a project's inception to its conclusion for a particular Business and IT subject matter area (i.e. simple to complex systems) * Develop a database structure that fits into the overall architecture of the system under development and has to make trades among data volumes, number of users, logical and physical distribution, response times, retention rules, security and domain controls. * PostgreSQL ## Related Videos - [Optimizing Discovery: PostgreSQL's Role in Transforming GetYourGuide's Search](https://www.wearedevelopers.com/videos/1647-optimizing-discovery-postgresql-s-role-in-transforming-getyourguide-s-search) - [Alibaba Big Data and Machine Learning Technology](https://www.wearedevelopers.com/videos/37-alibaba-big-data-and-machine-learning-technology) - [Kubernetes and Microservices with Multi-Model Databases](https://www.wearedevelopers.com/videos/382-kubernetes-and-microservices-with-multi-model-databases) - [How building an industry DBMS differs from building a research one](https://www.wearedevelopers.com/videos/768-how-building-an-industry-dbms-differs-from-building-a-research-one) - [Database DevOps with Containers](https://www.wearedevelopers.com/videos/145-database-devops-with-containers) - [Fault Tolerance and Consistency at Scale: Harnessing the Power of Distributed SQL Databases](https://www.wearedevelopers.com/videos/1146-fault-tolerance-and-consistency-at-scale-harnessing-the-power-of-distributed-sql-databases) ## Related Articles - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [Making Data Warehouses Fast: A Developer’s Story](https://www.wearedevelopers.com/magazine/107-making-data-warehouses-fast-a-developer-s-story) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)