Mid-Level SQL Engineer

Via Logic LLC; Gaithersburg (MD); On-site; USD 80,000 - 100,000; Full time

Job summary

A leading technology services company is looking for a SQL Engineer in Gaithersburg, MD, to support a high-visibility data-driven application. The role involves writing complex SQL queries, validating data accuracy, and collaborating with dashboard developers. Qualified candidates should have a relevant degree and strong SQL skills with experience in relational databases. Active TS/SCI clearance is required, with opportunities to work in multiple locations including Alexandria, VA, and others.

Qualifications

• 4–8 years experience for Bachelor's or 2–6 years for Master's.
• US Citizenship required.
• Active TS/SCI clearance with the ability to pass a Polygraph.

Responsibilities

• Write complex SQL queries for dashboard support.
• Structure data outputs for visualization.
• Ensure accuracy and completeness of datasets.

Skills

SQL

Data engineering fundamentals

Data validation

Dashboard support

Education

Bachelor's degree in computer science or related field

Master's degree in related field

Tools

PostgreSQL

MySQL

Oracle

Grafana

Tableau

Job description

Overview

If you’ve been building your skills in SQL, data engineering fundamentals, and mission‑driven development, and you’re ready for work that actually moves the needle, this is the kind of opportunity cleared engineers pursue when they want to grow while making real impact. If you take pride in your craft, enjoy solving meaningful data problems, and want your work to support a mission with visibility at senior levels, you’ll thrive here.

We’re hiring a SQL Engineer to support a high‑visibility, data‑driven application that powers analytics and reporting across the organization. In this role, you’ll write complex queries, shape data for dashboards, ensure data accuracy, and deliver reliable datasets that stakeholders depend on every day. You’ll work closely with dashboard developers and application teams to provide clean, consistent, and easy‑to‑consume data for mission users. Our primary development team operates out of Gaithersburg, MD, but innovation doesn’t stop there. We’re able to support onsite engineers in Alexandria, VA; Chantilly, VA; Aurora, CO; St. Louis, MO; and Tucson, AZ, giving top talent multiple paths to join the mission.

And while the requisition requirements may seem standard fare, the position is not; as it will join a high performing team that is changing the way digital engineering and mission operations intelligence is enabled for our customer.

Essential Responsibilities

• SQL Development: Write complex SQL queries involving joins, aggregations, filtering, subqueries, and window functions to support dashboards

• Data Shaping for Visualization: Structure query outputs in a way that is optimized for dashboard consumption (clear naming, grouping, formatting)

• Dashboard Support: Partner with dashboard developers to define and deliver the data required for visualizations and reporting

• Data Validation: Ensure accuracy, consistency, and completeness of datasets used in dashboards

• Query Performance: Identify inefficient queries and make basic improvements to support responsive dashboards

• Requirements Translation: Translate dashboard and reporting requirements into effective SQL queries

Basic Qualifications

• Bachelor’s degree in computer science, Software Engineering, or related field with 4–8 years of experience; or Master’s with 2–6 years

• US Citizenship

• Active TS/SCI with ability to successfully pass a Polygraph

• Strong SQL skills, including the ability to write advanced queries (joins, aggregations, subqueries, window functions)

• Experience working with enterprise relational databases (PostgreSQL, MySQL, Oracle, etc.)

• Background supporting analytics, dashboards, or reporting pipelines

• Comfortable working in Linux‑based environments

• Proven ability to work independently on data‑centric tasks and ensure data quality

Preferred Qualifications

• Experience with Grafana, Tableau, or similar visualization tools

• Exposure to CI/CD pipelines

• Experience working in Agile environments

EEO and Compliance

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider qualified applicants with criminal histories for employment in accordance with relevant laws.