836 Software Developers jobs in Ashburn

• 3+ years of combined experience in any of the following: Developing web applications using JavaScript/Typescript and a related framework (Angular, React, or Vue) including building HTML and CSS
• Experience with server-side application development using Java, C#, or Python
• Experience with usability analysis, automated testing development (unit and E2E)
• Experience with switching between different languages and learning new ones, as necessary
• Experience in working closely with software development teams
• Experience with Kafka, Kubernetes, Git, Node.Js, SQL, Python

• DoD 8570 Compliant Security+ or CISSP Certification prior to starting on contract
• Experience with Java Spring Framework
• Experience with testing frameworks, including Jasmine, Karma, or Selenium
• Experience with Linux scripting in BASH or Perl
• Experience with using JavaScript visualization libraries, including D3, Leaflet, and AG Grid
• Experience with information security
• Experience with Agile/Kanban development methodologies
• Knowledge of JIRA, Confluence, Git, and GitHub/GitLab
• Knowledge of standards in JavaScript, JSON, REST, CORS, Web architecture, and HTTP specification
• TS/SCI clearance required

Description

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• Split role between data engineering and Python engineering, focused on migration from standard databases to a Snowflake data warehouse
• Support transition from risk division databases to a centralized warehouse to enable standardized business reporting
• Perform Python and PySpark development along with ETL and Informatica responsibilities
• Handle scheduling and workflow tasks in Control-M to support data pipelines and integrations
• Work as part of a team of 3-4 developers, a tech lead, and team manager, with additional engineers joining later, leveraging Informatica, Python, PySpark, and SQL as core tools

• Python
• Pyspark
• MongoDB
• SQL.
• ETL
• Understanding of Agile practices.

• Preferred Snowflake and Informatica.
• Data warehousing
• Automation testing

• Python
• Pyspark
• MongoDB
• SQL
• ETL
• Agile practices.

• Recruiter
• Email
• Phone
• Sudhir Swami

Unissant, Inc. delivers innovative capabilities to the agencies that keep our nation healthy and safe. We apply our domain expertise, data acumen, and technology know-how to achieve breakthrough results for our clients. Working collaboratively, we advance missions and careers through a focus on honesty, integrity, and dependability. We continuously look for talent, excited to join that effort. To learn more about our exciting organization, please visit us at

We are seeking a Full Stack Developer to join our team and to support modernization initiatives with experience in Java (Spring Boot, JPA, Liquibase), Angular, and databases (RDS, PostgreSQL). The ideal candidate excels in building scalable microservices, containerized deployments, and CI/CD automation using GitOps.

Qualified applicants may be subject to a security investigation and must meet minimum qualifications for access to classified information. This is a highly technical position; individuals will be screened by peers in a technical review of skills and experience.

*This position is contingent upon contract award.

Essential Duties and Responsibilities:

• Develop high-quality web applications using Spring Boot, JPA, Liquibase, and Angular as core frameworks as directed by Tech Lead and Product Managers.
• Implement, and maintain robust and highly secure RESTful APIs and microservices supporting business-critical workflows.
• Develop, test, and optimize scalable database solutions using Relational Database Service (RDS) and PostgreSQL.
• Apply OWASP secure coding practices and test-driven development (TDD) principles to deliver high-quality, maintainable code; write automated tests for all new features.
• Leverage Docker to containerize application components, ensuring consistency across development, test, and production environments.
• Automate deployments with CI/CD pipelines integrated via GitOps tools.
• Collaborate closely with cross-functional teams to deliver end-to-end features.
• Troubleshoot, debug, and resolve complex defects across the application stack.
• Ensure secure design and compliance with best practices for access control and data protection.
• Support legacy JEE software applications on WebSphere.
• Participate and present in formal and informal design reviews and document the design according to the Government's system lifecycle methodology.

Work Experience & Job Skills:

• Minimum 3+ years of hands-on development experience and strong foundation in using Java, Spring boot Microservices, JPA and Angular 14+
• Experience with modern software engineering tools and methodologies including Eclipse, Spring Tool Suite (STS), Visual Studio Code, and Atlassian Products (Jira, Confluence).
• Understanding of building and querying RDS databases, especially PostgreSQL.
• Knowledge of test-driven development (TDD), with the ability to write and maintain unit, integration, and end-to-end tests.
• Strong understanding of microservice architecture and associated design patterns.
• Experience with containerization (Docker) for deploying and managing scalable applications.
• Proficiency in CI/CD automation, using GitOps tools for deployment orchestration (e.g., ArgoCD, GitHub Actions).
• Proficient with version control systems (Git) and Agile software development practices.
• Understanding of Web services (SOAP and Restful) and JEE Server experience (WebLogic, WebSphere etc.).
• Experience with Unix/Linux.

Education:

• Bachelor's Degree in Computer Science, Software Engineering, Information Technology, or related field with applicable experience is required. Applicable work experience may be considered in lieu of a degree.

Certificates, Licenses, and Registrations:

• This federal program requires the candidates to be a United States Citizen.
• Must have a current CBP BI clearance or be eligible to obtain one.
• Any related systems engineering, or related technical certifications are desired.

Communication Skills:

• Must have excellent written and verbal communication skills.
• Ability to convey technical information to non-technical individuals.
• Demonstrated experience communicating effectively across internal and external organizations.
• Must work well in a matrixed team environment.

Travel:

• This is a Hybrid position.

Environmental Requirements:

• Mainly sedentary; in an office environment
• May be required to lift to ten (10) pounds
• Flexible in working extended hours

The above statements are intended to describe the general nature and level of work being performed by the individual(s) assigned to this position. They are not intended to be an exhaustive list of all duties, responsibilities, and skills required. Unissant management reserves the right to modify, add, or remove duties and to assign other duties as necessary. In addition, where applicable and available, reasonable accommodation(s) may be made to enable individuals with disabilities to perform essential functions of this position.

Please note: Candidate(s) will be required to go through pre-employment screening.

Unissant, Inc. is a proud Equal Opportunity Employer! (EOE; M/F/Disability/Vets)

We are a world-class team of professionals who deliver next generation technology and products in robotic and autonomous platforms, ground, soldier, and maritime systems in 50+ locations world-wide. Much of our work contributes to innovative research in the fields of sensor science, signal processing, data fusion, artificial intelligence (AI), machine learning (ML), and augmented reality (AR).

QinetiQ US's dedicated experts in defense, aerospace, security, and related fields all work together to explore new ways of protecting the American Warfighter, Security Forces, and Allies. Being a part of QinetiQ US means being central to the safety and security of the world around us. Partnering with our customers, we help save lives; reduce risks to society; and maintain the global infrastructure on which we all depend.

Why Join QinetiQ US?

If you have the courage to take on a wide variety of complex challenges, then you will experience a unique working environment where innovative teams blend different perspectives, disciplines, and technologies to discover new ways of solving complex problems. In our diverse and inclusive environment, you can be authentic, feel valued, be respected, and realize your full potential. QinetiQ US will support you with workplace flexibility, a commitment to the health and well-being of you and your family and provide opportunities to work with a purpose. We are committed to supporting your success in both your professional and personal lives.

We are seeking an experienced Full Stack Developer to serve as the primary developer and maintainer of our existing web application. This role requires a self-directed professional who can own the complete software development lifecycle while working closely with business stakeholders and end users. The ideal candidate will have strong experience with Flask/React applications and containerized deployments.

Development & Maintenance

Serve as primary developer and maintainer for existing web application built with Flask backend and React frontend (legacy versions)

• Own end-to-end software lifecycle including design updates, development, testing, deployment, and production support

• Perform bug fixes, troubleshooting, and performance tuning to ensure optimal system stability and availability

• Refactor and modernize legacy code to improve maintainability and performance when feasible

Infrastructure & DevOps

• Manage and maintain containerized deployments using Docker Compose and AWS EC2

• Apply security patches, library upgrades, and system updates in a timely manner

• Monitor system health and proactively address potential issues

Stakeholder Collaboration

• Collaborate with Business Analyst and user base to review feature requests, triage bugs, and establish development priorities

• Function as co-product owner alongside Business Analyst to evaluate incoming requests and establish realistic timelines

• Interact directly with end users to clarify requirements, troubleshoot issues, and deliver effective solutions

Documentation & Communication

• Write and maintain comprehensive technical documentation

• Provide clear communication on project status, technical challenges, and solutions

Experience

• 4+ years of full stack web development experience
• Bachelor's Degree in an IT-related discipline

• Experience maintaining and enhancing legacy applications

• Background working directly with business stakeholders and end users

• Demonstrated experience in production environment management

• Clearance Level Must Be Able to Obtain: DOD Secret

Technical Skills

• Strong proficiency in Python and Flask framework

• Solid experience with React and modern JavaScript

• Experience with Docker and containerization technologies

• Familiarity with AWS services, particularly EC2

• Understanding of web application architecture and best practices

• Knowledge of version control systems (Git)

• Experience with database management and optimization

• Secret clearance or willingness to obtain one
• Knowledge of CI/CD pipelines
• Familiarity with monitoring and logging tools

• Experience with database migrations and schema management

• Background in security best practices for web applications

Accessibility/Accommodation:

If because of a medical condition or disability you need a reasonable accommodation for any part of the employment process, please send an e-mail to or call Opt. 4 and let us know the nature of your request and contact information.

QinetiQ US is an Equal Opportunity employer. All Qualified Applicants will receive equal consideration for employment without regard to race, age, color, religion, creed, sex, sexual orientation, gender identity, national origin, disability, or protected Veteran status.

MAG is staffing for a Full Stack Developer who will join an elite team developing next-generation tactical edge systems that provide decision superiority to warfighters in contested environments. You'll leverage COTS, FOSS/OSS, and custom development to build and integrate mission-critical applications that operate where traditional software fails - with intermittent networks, limited compute, and active adversaries.

This is a Hybrid Position - Remote mainly - but as well on call to come into a MAG office when requested. 

We are seeking candidates who live in proximity to our corporate HQ in Fairfax, VA primarily but will entertain persons living near our satellite offices in:

Aberdeen, MD - Titusville, FL - Newport News, VA - Carthage NC

Essential Duties and Responsibilities include the following:

Primary Responsibilities

• Design and develop microservices for distributed tactical systems using Python, Go, and/or Java
• Build responsive user interfaces for tactical operations using React, TypeScript, and modern web frameworks
• Implement RESTful and gRPC APIs for inter-service communication
• Develop data persistence layers for disconnected/intermittent operations
• Integrate with military systems and standards (TAK servers, CoT messages, MIL-STD-2525)
• Creatively optimize the reuse or integration of existing COTS or FOSS/OSS
• Write comprehensive unit and integration tests
• Mentor junior and mid-level developers through code reviews, pair programming, and technical guidance.

Secondary Responsibilities

• Support basic DevOps tasks including containerization and CI/CD pipeline maintenance
• Create tools and interfaces for system integration testing
• Assist with deployment automation and configuration management
• Contribute to API documentation and developer guides

Minimum Requirements

Experience:

• 5+ years full-stack development experience
• Proficiency in backend languages (Python, Go, Java, or C++)
• Strong frontend skills (React, TypeScript, modern JavaScript)
• Experience with microservices architecture and distributed systems
• Hands-on experience with Docker and container orchestration
• Database expertise (PostgreSQL, MongoDB, Redis, time-series DBs)
• Experience with message queuing systems (RabbitMQ, Kafka, MQTT. etc.)
• Strong understanding of RESTful and gRPC API design
• Git version control and collaborative development experience
• Experience with secure coding practices (e.g., OWASP Top 10) and familiarity with SAST/DAST tools
• Familiarity with cloud platforms (AWS, Azure) and hybrid cloud/edge architectures

• Experience with tactical military systems or defense contractors
• Familiarity with TAK (Team Awareness Kit) ecosystem
• Knowledge of geospatial systems and coordinate transformations
• Experience with offline-first and edge computing architectures
• Basic understanding of DevOps practices and CI/CD pipelines
• Contributions to open-source projects
• Experience with Agile/Scrum methodologies

Education:

• Bachelor's degree in Computer Science, Information Technology, or related field

Clearance:

• Must be eligible for Secret security clearance
• US Citizenship required

• You optimize for constrained environments, not just cloud scale
• You write clear, maintainable code that others can understand and modify
• You're comfortable with ambiguity and can work from high-level requirements
• You document as you code, not as an afterthought
• You can debug across the full stack, from database to browser

Why Join MAG:

• Work on meaningful problems that directly impact national security
• Small, elite team where your contributions matter immediately
• Access to cutting-edge hardware and technologies
• Rapid prototyping environment - see your ideas deployed in weeks
• Direct interaction with end users and field deployments
• Professional development and conference attendance support
• Flexible work arrangements with occasional field exercises
• Opportunity to shape the future of tactical edge computing

Project Description

Seeking an experienced Full Stack Developer to join our agile software development team. You will be responsible for designing, developing, and maintaining end-to-end web applications and other tools.

Responsibilities

- Design and develop robust, scalable, and secure web applications for both the front-end and back-end.

- Write clean, functional, and maintainable code, and participate in code reviews to ensure code quality and adherence to best practices.

- Design and manage databases, develop and integrate APIs, and handle server-side logic for application functionality.

- Troubleshoot, debug, and upgrade existing software to improve performance and user experience.

- Stay informed on emerging technologies and industry trends.

- Leverage AI to deliver solutions faster.

Qualifications:

- BS in CompSci or a STEM field, or demonstrable understanding of CS concepts - ex. data structures and algorithms.

- 7+ years of proven experience in full-stack development within a production environment.

- Expertise in front-end technologies: HTML, CSS, JavaScript, and modern frameworks (e.g., React, Angular, or Vue.js).

- Proficiency in back-end technologies and frameworks (e.g., Node.js, Python, Java)

- Extensive experience with database management systems (e.g., PostgreSQL)

- Familiarity with DevOps practices - CI/CD pipelines, containerization, and cloud platforms.

- Proficiency with version control systems (e.g., Git)

- Experience working within an Agile or Scrum development methodology.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender, identity, national origin, disability, or protected veteran status.

The Opportunity:

As a full stack developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you're looking for the chance to not just develop software, but to help create a system that will make a difference, we need you on our team. We're looking for a developer like you with the skills needed to develop software and systems from vision to production ready.

This role is more than just coding. As a Full Stack Developer at Booz Allen, you'll use your passion to learn new tools and techniques and identify needed system improvements. You'll help clients overcome their most difficult challenges using the latest architectural approaches, tools, and technologies. You'll help make sure the solution developed by the team considers the current architecture and operating environment, as well as future functionality and enhancements.

Work with us as we shape systems for the better.

Join us. The world can't wait.

You Have:

• 3+ years of experience developing web applications using JavaScript or Typescript and a framework such as Angular, React, or Vue, including building HTML and CSS

• Experience with server-side application development using JavaScript or Python

• Experience with usability analysis and automated testing development, including unit and end to end testing

• Experience switching between different languages and learning new ones, as necessary

• Experience working closely with software development teams

• Experience with Git

• Experience using back-end and front-end languages to develop complete solutions

• Experience creating solutions to complex problems within a collaborative team environment

• TS/SCI clearance

• HS diploma or GED

Nice If You Have:

• Experience with Java Spring Framework

• Experience with testing frameworks, including Jasmine, Karma, or Selenium

• Experience with Linux scripting in Bash or Perl

• Experience using JavaScript visualization libraries, including D3, Leaflet, and AG Grid

• Experience with information security

• Experience with Agile or Kanban development methodologies

• Knowledge of Jira, Confluence, Git, and GitHub or GitLab

• Knowledge of standards in JavaScript, JSON, REST, CORS, Web architecture, and HTTP specification

• DoD 8570 Security+ or CISSP Certification

Clearance:

Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information; TS/SCI clearance is required.

Compensation

At Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care. Our recognition awards program acknowledges employees for exceptional performance and superior demonstration of our values. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen's benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page.

Identity Statement

As part of the application process, you are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud.

Work Model
Our people-first culture prioritizes the benefits of flexibility and collaboration, whether that happens in person or remotely.

• If this position is listed as remote or hybrid, you'll periodically work from a Booz Allen or client site facility.
• If this position is listed as onsite, you'll work with colleagues and clients in person, as needed for the specific role.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.

CGS Federal (Contact Government Services) is seeking an experienced, resourceful, and inventive Full Stack Web Developer to join our Information Technology team. This role will perform software application development in support of an enterprise-wide data inventory effort and will work across multiple teams to develop an integrated solution. CGS offers an environment that supports professional growth through various learning opportunities.

Base pay range: $134,437.33/yr - $182,450.66/yr

Employment Type: Full Time, Mid-level
Department: Information Technology

• Perform software application development
• Develop software application tests and testing strategies
• Script solutions to automate manual processes
• Follow and instruct others on version control processes
• Develop solutions to strengthen the security in and around applications
• Leverage application metrics to inform technical and business decisions
• Analyze industry specific requirements/technologies and provide insight

• 11 years relevant experience
• A Bachelor's degree in a related field
• U.S. Citizenship is a requirement
• A passion for developing content rich web applications, APIs, services and scripts
• Experience working with Agile methodology and phase-based delivery methods
• Experience with JavaScript libraries such as Angular, Node.js, TypeORM

• Active DHS clearance is a plus
• Hands on experience with both compiled and interpreted languages
• Knowledge of how to deploy an application
• Confidence following testing, security, and configuration management best practices
• Experience with front and backend software development
• Familiarity with Unix based command line
• Understanding of database structure and integration
• Experience with Continuous Integration / Continuous Deployment strategies
• High degree of communication skills both oral and written
• Familiarity with Elasticsearch, SQL, Neo4j, Nest.js, Kibana, Matomo, Shibboleth/SAML, Git, BitBucket, Selenium, Linux Admin

• Health, Dental, and Vision
• Life Insurance
• 401k
• Flexible Spending Account (Health, Dependent Care, and Commuter)
• Paid Time Off and Observance of State/Federal Holidays

Contact Government Services (CGS) strives to simplify and enhance government bureaucracy through the optimization of human, technical, and financial resources. We combine cutting-edge technology with world-class personnel to deliver customized solutions that fit our clients specific needs. We are committed to solving the most challenging and dynamic problems. CGS is an Equal Opportunity Employer. Applicants will be considered without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Join our team and become part of government innovation! Explore additional job opportunities with CGS on our Job Board and learn more at our sites:

| Email: info@

Location: Arlington, VA (and other locations as applicable)

The Full Stack Developer will design, build, and scale the user-facing and backend components of an agentic AI platform, enabling intuitive visibility into model and data governance, performance, and compliance. Individual developers will focus within a team environment on either UX / Front-End Development or Agentic Agent Integration.

UX / Front-End Development

• Build responsive, human-centered dashboards that allow analysts and stakeholders to view, search, and interact with model/data cards, performance scorecards, and compliance status.
• Implement intuitive interfaces to visualize agent behavior, decision flows, and operational states, supporting human-in-the-loop feedback.
• Collaborate with UX designers to incorporate gamified and feedback-driven UI patterns that encourage best-practice analytic behavior.

Backend Services & Integration

• Develop backend services and APIs to manage model/data card repositories, metadata registries, and ATO-related configuration data.
• Integrate data from model pipelines, governance systems, and agent telemetry into centralized views and dashboards.
• Ensure secure, role-based access control (RBAC) and audit logging are implemented throughout the stack.

Agentic Agent Integration

• Build front-end and back-end components enabling analysts to task, monitor, and collaborate with agentic AI agents.
• Provide structured views for planner/meta-reasoner outputs, agent self-IV&V reports, and ATO compliance metrics.
• Implement RESTful and event-driven interfaces (AWS EventBridge) for real-time communication between agents and UI components.

Required Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or a related field.
• 3+ years of hands-on experience building full-stack web applications in production environments.
• Strong proficiency in Python (for back-end services) and modern front-end frameworks (React, js, or Angular).
• Experience designing REST APIs and microservice architectures; containerization using Docker/Kubernetes.
• Familiarity with data/ML systems and integrating outputs from AI pipelines into front-end user experiences.
• Understanding of security, RBAC, and CI/CD practices in DevSecOps environments.

Desired Qualifications

• Master's degree in Computer Science, Human-Computer Interaction, or a related field.
• Experience with: agentic AI user interfaces and collaborative human-agent workflows; building model/data card dashboards and compliance/ATO visualization tools; working within NGA CORE or other National Geospatial-Intelligence Agency (NGA)/Intelligence Community (IC) secure data environments; contributing to or extending open-source AI or full-stack frameworks.
• Active TS/SCI clearance (or ability to obtain one).

We are seeking a Full-Stack Developer to support National Geospatial-Intelligence Agency (NGA) Artificial Intelligence (AI) efforts. This developer will play an important role helping to create technical solutions for multiple AI challenges.

TekSynap is a fast-growing high-tech company that understands both the pace of technology today and the need to have a comprehensive well planned information management environment. "Technology moving at the speed of thought" embodies these principles the need to nimbly utilize the best that information technology offers to meet the business needs of our Federal Government customers.

We offer our full-time employees a competitive benefits package to include health, dental, vision, 401K, life insurance, short-term and long-term disability plans, vacation time and holidays.

Work Environment and Physical Demands

The work environment characteristics described here are representative of those an employee encounters while performing the essential functions of the job. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

• Location: Reston, VA and/or remote. Occasional travel within the National Capital Region (NCR)
• Type of environment: Varies
• Noise level: Low
• Work schedule: "Normal work hours" constitute on average 8 hours a day, 40 hours per week (excluding breaks and meal periods) within standard operational hours occurring , Monday-Friday, excluding Federal holidays. May be requested to work evenings and weekends to meet program and contract needs.
• Amount of Travel: 10%

Physical Demands

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

While performing the duties of this job, the employee is regularly required to use hands to handle, feel, touch; reach with hands and arms; talk and hear. The employee is regularly required to stand, walk, sit; climb or balance; and stoop, kneel, crouch, or crawl. The employee is frequently required to lift up to 25 pounds; and up to 50 pounds. The vision requirements include close vision, distance vision, peripheral vision, depth perception, and ability to adjust focus.

Work Authorization/Security Clearance

U.S Citizenship

Clearance requirement: TS/CI with CI Poly

Other Information

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.

TekSynap is a drug-free workplace. We reserve the right to conduct drug testing in accordance with federal, state, and local laws. All employees and candidates may be subject to drug screening if deemed necessary to ensure a safe and compliant working environment.

Equal Employment Opportunity

In order to provide equal employment and advancement opportunities to all individuals, employment decisions will be based on merit, qualifications, and abilities. TekSynap does not discriminate against any person because of race, color, creed, religion, sex, national origin, disability, age, genetic information, or any other characteristic protected by law (referred to as "protected status"). This nondiscrimination policy extends to all terms, conditions, and privileges of employment as well as the use of all company facilities, participation in all company-sponsored activities, and all employment actions such as promotions, compensation, benefits, and termination of employment.

TekSynap is committed to ensuring that our online application process provides an equal employment opportunity to all job seekers, including individuals with disabilities. If you believe you need a reasonable accommodation in order to search for a job opening or to submit an application, please contact hr@ for assistance.