Data​/Software Engineer; TS​/SCI Poly

Data/Software Engineer (TS/SCI with Poly Required)

Job Category: Software Engineering

Requisition Number: DATAS
001894

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• Posted :
  December 19, 2025
• Full-Time
• On-site
• Salary Range : 146,057.6 to 243,921.6

Showing 1 location

Chantilly
Chantilly, VA, USA

GCI embodies excellence, integrity and professionalism. The employees supporting our customers deliver unique, high-value mission solutions while effectively leverage the technological expertise of our valued workforce to meet critical mission requirements in the areas of Data Analytics and Software Development, Engineering, Targeting and Analysis, Operations, Training, and Cyber Operations. We maximize opportunities for success by building and maintaining trusted and reliable partnerships with our customers and industry.

At GCI, we solve the hard problems. As a Back End Engineer, a typical day will include the following duties:

We’re looking for a Software Engineer who is passionate about building modern, scalable solutions for ingesting and transforming data. This role blends back-end engineering with data pipeline development and is perfect for someone who enjoys designing modular services and bringing structure to complex data environments. As part of our Agile team, you’ll design and develop software products and services that efficiently ingest, process, and manage data from a variety of sources.

You’ll play a key role in building robust, reusable APIs and data pipelines that support critical operational and analytical systems.

• Design and develop scalable backend services and data ingestion solutions.
• Perform data modeling, data mapping, and large-scale file manipulation.
• Collaborate across disciplines in an Agile environment with minimal supervision.
• Drive innovation and process improvement with a hands‑on development approach.
• Optimize application for maximum speed and scalability.

• Bachelor’s Degree in Computer Science, Electrical or Computer Engineering or a related technical discipline, or the equivalent combination of education, technical training, or work/military experience.
• At least five (5) years of related software engineering experience.

• Knowledge of NodeJS or Python
• Strong understanding of APIs, microservices, and distributed systems.
• Solid experience in building and maintaining ETL workflows and data pipelines.
• Excellent organizational, coordination, interpersonal and team building skills.
• Familiarization with No
  
  SQL data stores.

• NiFi experience
• Hands‑on experience working with Elastic and RabbitMQ
• No
  
  SQL experience (i.e. Mongo
  
  DB)
• Distributed architecture creation
• Cloud based architecture creation or experience

* A candidate must be a US Citizen and requires an active/current TS/SCI with Polygraph clearance.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

Equal Opportunity Employer
This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor.