Senior Fullstack Software Engineer Jobs in Arlington, VA
Senior Fullstack Software Engineer jobs in Arlington are in strong demand, concentrated in Rosslyn, Ballston, and Crystal City across defense technology, federal contracting, and commercial software. Employers actively hiring include General Dynamics Information Technology, Accenture Federal Services, and Peraton. See the openings below and apply to the ones that match your experience.
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Showing 4 of 120+ Senior Fullstack Software Engineer jobs
Iron EagleX, a GDIT company, contributes to the U.S. government’s mission of protecting our nation and enables our customers to make quicker decisions and act faster than our adversaries.
AI Ops
CI/CD
Docker (Software)
User Interfaces (UI)
Web Applications
REQ#: RQ228537
Public Trust: None
Requisition Type: Regular
Your Impact
Own your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure.
Job Description
YOUR IMPACT
Own your opportunity to work with the largest government agency in the nation. Make an impact by advancing the Department of War’s mission to keep our country safe and secure.
OUR COMPANY
Iron EagleX (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 organizations and end users to operate smarter, faster, and more securely in dynamic environments.
JOB DESCRIPTION
Iron EagleX is seeking a Principal Agentic AI Full Stack Software Engineer to support our AI team in Crystal City, VA. This role will design, deploy, and sustain critical components of our AI analytics stack, including analytic frontends, production APIs, interfaces between AI workflow components, and the underlying data layer.
MEANINGFUL WORK AND PERSONAL IMPACT
As a Principal Agentic AI Full Stack Software Engineer, you will be a core member of the AI team responsible for prototyping, building, and delivering critical data analytics capabilities. You will help translate emerging AI and machine learning concepts into reliable, user-focused software solutions that support mission outcomes.
JOB DUTIES (INCLUDE BUT ARE NOT LIMITED TO)
Develop clean, maintainable, and efficient Python code while adhering to best practices and coding standards.
Lead the technical design and implementation of AI-enabled web applications and analytics using Streamlit, React, or similar technologies.
Integrate modern AI and large language model capabilities into applications and workflows, including prompting, tool calling, retrieval-augmented generation (RAG), and related patterns.
Design, develop, and integrate APIs, including FastAPI-based services, to enable seamless communication between systems.
Build and maintain user interfaces that make complex AI, data, and analytics capabilities accessible to end users.
Establish and maintain CI/CD pipelines and container-based deployments using tools such as Docker to support repeatable builds and reliable releases.
Work with relational databases such as PostgreSQL and MySQL to ensure data integrity, performance, and efficiency.
Implement and maintain version control using Git to streamline collaboration and code management.
Collaborate with cross-functional teams to define, design, develop, test, and deliver new features.
Contribute to all stages of the software development life cycle, from concept and design through testing, deployment, and sustainment.
REQUIRED SKILLS
Proficiency in writing clean, maintainable, and efficient Python code.
Experience building AI-enabled web applications, analytic dashboards, or user workflows using Streamlit or similar technologies.
Strong knowledge of web technologies, containerization, RESTful APIs, and user interface development.
Experience designing and maintaining scalable backend solutions using Python frameworks.
Familiarity with relational database systems such as PostgreSQL and MySQL.
Proficiency with Docker; Kubernetes experience is a plus.
Proficiency with Git-based version control and collaborative software development workflows.
Hands-on experience with full stack development and a strong understanding of the software development life cycle.
DESIRED SKILLS
Experience developing modern front-end applications using React.
Hands-on experience designing or developing LLM-powered agentic workflows that use tool calling, structured outputs, task planning, and multi-step execution.
Familiarity with component-based UI development, state management, and reusable front-end design patterns.
Experience integrating React-based frontends with RESTful APIs or Python-based backend services.
Experience supporting AI, machine learning, data analytics, or mission-focused software applications.
Familiarity with cloud-native application development, DevSecOps practices, or secure software delivery environments.
Experience implementing reliable AI workflows with validation, error handling, retries, logging, and fallback strategies.
Understanding of MLOps concepts, including model registry/versioning, reproducible environments, and CI/CD for ML-enabled systems.
WHAT YOU’LL NEED TO SUCCEED
Clearance: Current TS/SCI Clearance with active or ability to obtain CI Polygraph is required
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, VA with optional CONUS travel
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 that identifies career 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, competitive pay and paid time off
Community: Award-winning culture of innovation and a military-friendly workplace
OWN YOUR OPPORTUNITY
Explore a career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your passion for the mission and delivering results. #iexjobs #iexpriority
Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans
#iexjobsWork Requirements
8 + years of related experience
- may vary based on technical training, certification(s), or degree
10-25%
U.S. Citizenship Required
Salary and Benefit Information
The likely salary range for this position is $142,800 - $193,200. 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.
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
Iron EagleX, a GDIT company, contributes to the U.S. government’s mission of protecting our nation and enables our customers to make quicker decisions and act faster than our adversaries.
AI Ops
CI/CD
Docker (Software)
User Interfaces (UI)
Web Applications
REQ#: RQ228537
Public Trust: None
Requisition Type: Regular
Your Impact
Own your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure.
Job Description
YOUR IMPACT
Own your opportunity to work with the largest government agency in the nation. Make an impact by advancing the Department of War’s mission to keep our country safe and secure.
OUR COMPANY
Iron EagleX (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 organizations and end users to operate smarter, faster, and more securely in dynamic environments.
JOB DESCRIPTION
Iron EagleX is seeking a Principal Agentic AI Full Stack Software Engineer to support our AI team in Crystal City, VA. This role will design, deploy, and sustain critical components of our AI analytics stack, including analytic frontends, production APIs, interfaces between AI workflow components, and the underlying data layer.
MEANINGFUL WORK AND PERSONAL IMPACT
As a Principal Agentic AI Full Stack Software Engineer, you will be a core member of the AI team responsible for prototyping, building, and delivering critical data analytics capabilities. You will help translate emerging AI and machine learning concepts into reliable, user-focused software solutions that support mission outcomes.
JOB DUTIES (INCLUDE BUT ARE NOT LIMITED TO)
Develop clean, maintainable, and efficient Python code while adhering to best practices and coding standards.
Lead the technical design and implementation of AI-enabled web applications and analytics using Streamlit, React, or similar technologies.
Integrate modern AI and large language model capabilities into applications and workflows, including prompting, tool calling, retrieval-augmented generation (RAG), and related patterns.
Design, develop, and integrate APIs, including FastAPI-based services, to enable seamless communication between systems.
Build and maintain user interfaces that make complex AI, data, and analytics capabilities accessible to end users.
Establish and maintain CI/CD pipelines and container-based deployments using tools such as Docker to support repeatable builds and reliable releases.
Work with relational databases such as PostgreSQL and MySQL to ensure data integrity, performance, and efficiency.
Implement and maintain version control using Git to streamline collaboration and code management.
Collaborate with cross-functional teams to define, design, develop, test, and deliver new features.
Contribute to all stages of the software development life cycle, from concept and design through testing, deployment, and sustainment.
REQUIRED SKILLS
Proficiency in writing clean, maintainable, and efficient Python code.
Experience building AI-enabled web applications, analytic dashboards, or user workflows using Streamlit or similar technologies.
Strong knowledge of web technologies, containerization, RESTful APIs, and user interface development.
Experience designing and maintaining scalable backend solutions using Python frameworks.
Familiarity with relational database systems such as PostgreSQL and MySQL.
Proficiency with Docker; Kubernetes experience is a plus.
Proficiency with Git-based version control and collaborative software development workflows.
Hands-on experience with full stack development and a strong understanding of the software development life cycle.
DESIRED SKILLS
Experience developing modern front-end applications using React.
Hands-on experience designing or developing LLM-powered agentic workflows that use tool calling, structured outputs, task planning, and multi-step execution.
Familiarity with component-based UI development, state management, and reusable front-end design patterns.
Experience integrating React-based frontends with RESTful APIs or Python-based backend services.
Experience supporting AI, machine learning, data analytics, or mission-focused software applications.
Familiarity with cloud-native application development, DevSecOps practices, or secure software delivery environments.
Experience implementing reliable AI workflows with validation, error handling, retries, logging, and fallback strategies.
Understanding of MLOps concepts, including model registry/versioning, reproducible environments, and CI/CD for ML-enabled systems.
WHAT YOU’LL NEED TO SUCCEED
Clearance: Current TS/SCI Clearance with active or ability to obtain CI Polygraph is required
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, VA with optional CONUS travel
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 that identifies career 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, competitive pay and paid time off
Community: Award-winning culture of innovation and a military-friendly workplace
OWN YOUR OPPORTUNITY
Explore a career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your passion for the mission and delivering results. #iexjobs #iexpriority
Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans
#iexjobsWork Requirements
8 + years of related experience
- may vary based on technical training, certification(s), or degree
10-25%
U.S. Citizenship Required
Salary and Benefit Information
The likely salary range for this position is $142,800 - $193,200. 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.
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
See All 120+ Senior Fullstack Software Engineer Jobs in Arlington
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Find JobsSenior Fullstack Software Engineer Job Market in Arlington
Who's Hiring
- General Dynamics Information Technology33
- Accenture Federal Services22
- Peraton11
- Black Cape11
- MORSE11
Top Industries Hiring
- Marketing & Advertising
- Non-Profit & Social Services
Senior Fullstack Software Engineer Jobs in Arlington: Frequently Asked Questions
How do I get a senior fullstack software engineer job in Arlington?
The strongest hiring in Arlington comes from defense contractors, federal IT services firms, and SaaS companies clustered in Rosslyn, Ballston, and Pentagon City. Candidates with full-stack experience in React, Node.js, or Java who also hold or can obtain a security clearance stand out significantly here. Familiarity with government-adjacent systems, cloud platforms like AWS or Azure, and agile delivery in compliance-heavy environments gives applicants a real edge in this market.
Which companies hire senior fullstack software engineers in Arlington?
Employers hiring senior fullstack software engineers in Arlington right now include General Dynamics Information Technology, Accenture Federal Services, and Peraton, based on current listings on Migrate Mate as of September 2026. Arlington's employer base skews heavily toward federal contractors, defense technology firms, and mission-driven software companies serving government and commercial clients.
Are there remote senior fullstack software engineer jobs in Arlington?
Yes, remote and hybrid arrangements are common for senior fullstack software engineers, since the work is largely code-based and does not require a physical presence. About 43% of senior fullstack software engineer openings tied to Arlington are remote or hybrid as of September 2026, though roles touching classified systems or federal clients often require on-site work in the Rosslyn or Pentagon City corridors.
How can I get a senior fullstack software engineer job in Arlington with little or no experience?
The most realistic entry path in Arlington is through junior or associate software engineer roles at federal contractors and technology services firms, which often hire in volume to staff long-term government engagements. Entry-level positions at agencies like Booz Allen Hamilton, Leidos, or similar contractors in Ballston and Crystal City can provide structured mentorship and clearance sponsorship that builds toward a senior role faster than most commercial environments.
Which industries hire the most senior fullstack software engineers in Arlington?
The sectors hiring the most senior fullstack software engineers in Arlington are Marketing & Advertising and Non-Profit & Social Services, based on current listings on Migrate Mate as of September 2026. Arlington's proximity to the Pentagon and federal agencies drives outsized demand from defense technology and government IT services companies that maintain large engineering teams in the area.
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