Junior Software Engineer - TS/SCI with Poly - Careers at Leidos
Leidos
Junior Software Engineer - TS/SCI with Poly - Careers at Leidos
Job Description
Join Leidos as a Junior Software Engineer in Chantilly, VA
Leidos is seeking a motivated Junior Software Engineer with TS/SCI and Poly clearance to develop modern web applications using React.js. Ideal for recent graduates or early-career professionals passionate about front-end development in a dynamic, mission-critical environment.
Primary Responsibilities
- Build and maintain user-facing React.js features, including reusable components and state management with hooks like useState and useEffect.
- Convert UI/UX designs and wireframes into high-quality, responsive code using HTML5, CSS3, and ES6+ JavaScript.
- Collaborate with backend teams to integrate RESTful APIs for seamless data flow.
- Leverage AI tools (GitHub Copilot, Cursor, Claude) for efficient code generation, debugging, refactoring, and prompt engineering.
- Conduct code reviews, unit testing, and debugging to ensure cross-browser/device compatibility and performance.
- Write clean, modular code adhering to team standards in an Agile setting with stand-ups and sprint planning.
- Stay ahead of front-end trends and AI-assisted development practices.
Basic Qualifications
- Bachelor's +1 year experience (or equivalent).
- Active TS/SCI with Poly; US Citizen.
- Proficiency in JavaScript (ES6+), HTML5, CSS3; React fundamentals.
- Git experience; interest in AI coding tools.
- Responsive design knowledge; CompTIA Security+.
- Team player with strong problem-solving and communication.
Preferred Qualifications
- npm/Yarn/Vite; TypeScript/Redux basics.
- REST API exposure; GitHub portfolio or projects.
Pay Range: $57,850 - $104,575 USD. Original posting Dec 30, 2025. Leidos solves high-stakes problems with innovative code and AI. Apply now!
Locations
- Chantilly, Virginia, United States
Salary
57,850 - 104,575 USD / yearly
57,850 - 104,575 USD / yearly
* This is an estimated range based on market data and may vary based on experience and qualifications.
Skills Required
- React.jsintermediate
- JavaScript (ES6+)intermediate
- HTML5intermediate
- CSS3intermediate
- Gitintermediate
- AI Coding Tools (GitHub Copilot, Claude)intermediate
- Responsive Designintermediate
- RESTful APIsintermediate
Required Qualifications
- Bachelor's degree with 1+ years experience or equivalent (experience)
- Active TS/SCI with Poly clearance (experience)
- CompTIA Security+ certification (experience)
- US Citizenship (experience)
- Fundamental React.js knowledge (components, hooks) (experience)
- Strong problem-solving and communication skills (experience)
Responsibilities
- Develop React.js user-facing features and reusable components
- Translate UI/UX designs into responsive HTML5/CSS3/JS code
- Integrate RESTful APIs with backend developers
- Utilize AI tools for code generation, debugging, and refactoring
- Participate in Agile processes, code reviews, and unit testing
Benefits
- general: Competitive salary $57,850-$104,575
- general: Mission-focused environment with growth opportunities
- general: Hands-on experience with modern web tech and AI tools
- general: Agile team collaboration and daily stand-ups
- general: Professional development in high-stakes defense projects
Tags & Categories
Answer 10 quick questions to check your fit for Junior Software Engineer - TS/SCI with Poly - Careers at Leidos @ Leidos.
Related Books and Jobs
Junior Software Engineer - TS/SCI with Poly - Careers at Leidos
Leidos
Junior Software Engineer - TS/SCI with Poly - Careers at Leidos
Job Description
Join Leidos as a Junior Software Engineer in Chantilly, VA
Leidos is seeking a motivated Junior Software Engineer with TS/SCI and Poly clearance to develop modern web applications using React.js. Ideal for recent graduates or early-career professionals passionate about front-end development in a dynamic, mission-critical environment.
Primary Responsibilities
- Build and maintain user-facing React.js features, including reusable components and state management with hooks like useState and useEffect.
- Convert UI/UX designs and wireframes into high-quality, responsive code using HTML5, CSS3, and ES6+ JavaScript.
- Collaborate with backend teams to integrate RESTful APIs for seamless data flow.
- Leverage AI tools (GitHub Copilot, Cursor, Claude) for efficient code generation, debugging, refactoring, and prompt engineering.
- Conduct code reviews, unit testing, and debugging to ensure cross-browser/device compatibility and performance.
- Write clean, modular code adhering to team standards in an Agile setting with stand-ups and sprint planning.
- Stay ahead of front-end trends and AI-assisted development practices.
Basic Qualifications
- Bachelor's +1 year experience (or equivalent).
- Active TS/SCI with Poly; US Citizen.
- Proficiency in JavaScript (ES6+), HTML5, CSS3; React fundamentals.
- Git experience; interest in AI coding tools.
- Responsive design knowledge; CompTIA Security+.
- Team player with strong problem-solving and communication.
Preferred Qualifications
- npm/Yarn/Vite; TypeScript/Redux basics.
- REST API exposure; GitHub portfolio or projects.
Pay Range: $57,850 - $104,575 USD. Original posting Dec 30, 2025. Leidos solves high-stakes problems with innovative code and AI. Apply now!
Locations
- Chantilly, Virginia, United States
Salary
57,850 - 104,575 USD / yearly
57,850 - 104,575 USD / yearly
* This is an estimated range based on market data and may vary based on experience and qualifications.
Skills Required
- React.jsintermediate
- JavaScript (ES6+)intermediate
- HTML5intermediate
- CSS3intermediate
- Gitintermediate
- AI Coding Tools (GitHub Copilot, Claude)intermediate
- Responsive Designintermediate
- RESTful APIsintermediate
Required Qualifications
- Bachelor's degree with 1+ years experience or equivalent (experience)
- Active TS/SCI with Poly clearance (experience)
- CompTIA Security+ certification (experience)
- US Citizenship (experience)
- Fundamental React.js knowledge (components, hooks) (experience)
- Strong problem-solving and communication skills (experience)
Responsibilities
- Develop React.js user-facing features and reusable components
- Translate UI/UX designs into responsive HTML5/CSS3/JS code
- Integrate RESTful APIs with backend developers
- Utilize AI tools for code generation, debugging, and refactoring
- Participate in Agile processes, code reviews, and unit testing
Benefits
- general: Competitive salary $57,850-$104,575
- general: Mission-focused environment with growth opportunities
- general: Hands-on experience with modern web tech and AI tools
- general: Agile team collaboration and daily stand-ups
- general: Professional development in high-stakes defense projects
Tags & Categories
Answer 10 quick questions to check your fit for Junior Software Engineer - TS/SCI with Poly - Careers at Leidos @ Leidos.
Related Books and Jobs