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Principal Full Stack Software Engineer

GDIT
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Arlington County, Arlington, VA, USA
Sep 20, 2026

Type of Requisition:

Regular

Clearance Level Must Currently Possess:

Top Secret/SCI

Clearance Level Must Be Able to Obtain:

Top Secret SCI + Polygraph

Public Trust/Other Required:

None

Job Family:

Software Engineering

Job Qualifications:

Skills:

CI/CD, Git, Python (Programming Language), Software Development, Structured Query Language (SQL) Development

Certifications:

None

Experience:

8 + years of related experience

US Citizenship Required:

Yes

Job Description:

YOUR IMPACT

Own your opportunity to work with the largest government agency in the nation. Make an impact by advancing the Department ofWar’s mission to keep our country safe and secure.

OUR COMPANY

IronEagleX(IEX), a wholly owned subsidiary of General Dynamics Information Technology(GDIT), delivers agile IT and Intelligence solutions. Combining small-team flexibility with global scale, IEX leverages emerging technologies to provide innovative, user-focused solutions that empower organizationsand end users tooperatesmarter, faster, and more securely in dynamic environments. 

JOB DESCRIPTION

IronEagleXis seeking a Principal Full Stack Software Engineer to join our dynamic team in Crystal City, VA. This role designs, develops, deploys, and sustains innovative software and data capabilities as a member of a fast-paced, multidisciplinary team. You will work across the application stack to build analytic frontends, production APIs, data integration services, reporting interfaces, and supporting data layers that transform complex data and analytic methods into practical, reliable capabilities supporting critical customer requirements.

MEANINGFUL WORK AND PERSONAL IMPACT

As aPrincipal Full Stack Software Engineer, you will quickly turn complex data, analytic requirements, and emerging concepts into usable software capabilities that deliver critical insights to end users. You will work closely with analysts, data scientists, and other technical specialists to solve difficult technical problems, rapidly prototype new applications and workflows, and transition successful solutions into repeatable, maintainable, and operationalsoftwarecapabilities.

JOB DUTIES(INCLUDE BUT ARE NOT LIMITED TO)

  • Develop clean, maintainable, and efficient Python code while adhering to best practices and coding standards.

  • Design, build, andmaintaindata analytics web applications, dashboards, and user-facing analytics experiences usingStreamlitor similar technologies.

  • Develop interactive data products that enable users to explore, visualize, filter, and interpret complex datasets.

  • Build and integrate backend services, APIs, and data access layers using Python frameworks such asFastAPIor similar technologies.

  • Support data ingestion, transformation, validation, and aggregation capabilities to help ensureaccurateandtimelyanalytics.

  • Work with relational databases such as Postgres and MySQL, supporting data integrity, performance, and efficient query design.

  • Collaborate with data analysts, data engineers, and stakeholders to understand requirements and deliver practical analytics solutions.

  • Create reusable software components and data services that support reporting, visualization, workflow automation, and operational analytics.

  • Support CI/CD pipelines and container-based deployments, including Docker-based environments, to enable repeatable builds and reliable releases.

  • Implement andmaintainversion control using Git to support collaboration and code management.

  • Apply software engineering best practices to improve scalability, maintainability, testability, and reliability of analytics applications.

  • Ensure developed solutions meet required security, quality, and compliance standards.

  • Contribute to all stages of the software development life cycle, from concept and design to testing, deployment, sustainment, and enhancement.

REQUIRED SKILLS:

  • Ability to work effectively both collaboratively and independently in a fast-paced environment.

  • Experience writing clean, maintainable, and efficient Python code.

  • Hands-on experience developing software applications that support data analytics, reporting, dashboards, or operational data products.

  • Experience with front-end development usingStreamlitor similar technologies for interactive analytics applications.

  • Working knowledge of web technologies, RESTful APIs, containerization, backend services, and user interface development.

  • Experience building andmaintainingbackend solutions using Python frameworks such asFastAPIor similar tools.

  • Familiarity with relational database systems such as PostgreSQL and MySQL.

  • Experience writing SQL queries to support analytics, reporting, and application functionality.

  • Understanding of data quality, data validation, data transformation, and basic data modeling concepts.

  • Experience with Docker; Kubernetes experience is a plus.

  • Familiarity with CI/CD pipelines and repeatable deployment practices.

  • Proficiencyin implementing andmaintainingversion control using Git.

  • Hands-on experience with full stack development and understanding of the software development life cycle.

DESIRED SKILLS

  • Experience developing analytics dashboards, operational reporting tools, or mission-focused data applications.

  • Experience with data visualization libraries or platforms such asStreamlit, Superset, or similar tools.

  • Familiarity with ETL workflows, data pipelines, or automated data processing jobs.

  • Familiarity with cloud-based data platforms, managed databases, object storage, or cloud deployment environments.

  • Experience working with data from multiple source systems.

  • Familiarity with data governance, metadata management, access control, and data security best practices.

  • Experience troubleshooting application, database, or query performance issues.

  • Ability to translate stakeholder requirements into technical tasks and user-facing analytics capabilities.

  • Strong problem-solving skills and the ability to communicate technical concepts clearly to both technical and non-technical audiences.

WHAT YOU’LL NEED TO SUCCEED

  • Clearance:CurrentTS/SCIClearancewith active or ability to obtain CI Polygraph isrequired

  • Experience:8+years of related experience

  • Education:Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent experience)

  • Role requirements:Work is onsite in Crystal City, VAwith CONUStravelof up to60-90consecutive days annually

  • Due to US Government Contract Requirements, only US Citizens are eligible for this role 

GDIT IS YOUR PLACE
At GDIT, the mission is our purpose, and our people are at the center of everything we do.

  • Growth: AI-powered career tool thatidentifiescareer steps and learning opportunities

  • Support: An internal mobility team focused on helping you achieve your career goals

  • Rewards: Comprehensive benefits and wellness packages, 401K with company match,competitivepayand paid time off

  • Community: Award-winning culture of innovation and a military-friendly workplace


OWN YOUR OPPORTUNITY
Explore a career at GDIT andyou’llfind endless opportunities to grow alongside colleagues who share your passion for the mission and delivering results.#iexjobs

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans 

The likely salary range for this position is $140,250 - $189,750. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

Scheduled Weekly Hours:

40

Travel Required:

10-25%

Telecommuting Options:

Onsite

Work Location:

USA VA Arlington

Additional Work Locations:

Total Rewards at GDIT:

Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

Our Identity Verification Process:

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work:

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.Join our Talent Community to stay up to date on our career opportunities and events at

gdit.com/tc.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

Job ID

RQ228167
About GDIT
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