Principal Full Stack Software Engineer

Principal Full Stack Software EngineerIron EagleX is 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 a Principal 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 operational software capabilities.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, and maintain data analytics web applications, dashboards, and user-facing analytics experiences using Streamlit or 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 as FastAPI or similar technologies.Support data ingestion, transformation, validation, and aggregation capabilities to help ensure accurate and timely analytics.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 and maintain version 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 using Streamlit or similar technologies for interactive analytics applications.Working knowledge of web technologies, RESTful APIs, containerization, backend services, and user interface development.Experience building and maintaining backend solutions using Python frameworks such as FastAPI or 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.Proficiency in implementing and maintaining version control using Git.Hands-on experience with full stack development and understanding of the software development life cycle.DESIRED SKILLSExperience developing analytics dashboards, operational reporting tools, or mission-focused data applications.Experience with data visualization libraries or platforms such as Streamlit, 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 SUCCEEDClearance: Current TS/SCI Clearance with active or ability to obtain CI Polygraph is requiredExperience:8+ years of related experienceEducation: Bachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent experience)Role requirements: Work is onsite in Crystal City, VA with CONUS travel of up to 60-90 consecutive days annuallyDue to US Government Contract Requirements, only US Citizens are eligible for this roleGDIT 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 that identifies career steps and learning opportunitiesSupport: An internal mobility team focused on helping you achieve your career goalsRewards: Comprehensive benefits and wellness packages, 401K with company match, competitive pay and paid time offCommunity: Award-winning culture of innovation and a military-friendly workplace