Explore 3 react developer jobs from 3 hiring companies in Crossville, TN, US. Filter by remote, salary, experience, and company, then open any listing to apply.

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React Developer Jobs

Rampant Technologies

Xcel Engineering

XCEL Engineering

Onsite

Job Summary 
<ul>
<li>Develops, creates, maintains, and writes/codes new (or modifies existing) computer applications, software, or specialized utility programs. Develops APIs to integrate cyber tools and applications into SIEMs and eGRC platforms. Develops applications within the eGRC platform to fully integrate Authorization requirements. Develops solutions for document management requirements.</li>
</ul>
Key Skills &amp; Experience&nbsp;
<ul>
<li>Five (5+) years&amp;#39; experience as a Software Engineer in programs and contracts of similar scope, type, and complexity is required.</li>
<li>&nbsp;Experience with microservice architectures within a Docker containerized environment.</li>
<li>&nbsp;Proficiency working with JavaScript/TypeScript, JavaScript frameworks Angular/React, and Java (Spring).</li>
<li>&nbsp;Experience deploying software solutions to a cloud-based environment.</li>
<li>&nbsp;Experience developing software in a Linux environment.</li>
<li>&nbsp;Experience with distributed software version control systems and continuous integration, such as git and gitlab.</li>
<li>&nbsp;Understanding of static and dynamic software analysis tools and techniques.</li>
<li>&nbsp;Experience implementing and integrating IC community security concepts (authentication, authorization, encryption, integrity, and non-repudiation) into applications.</li>
</ul>
Education, Certifications, &amp; Credentials
<ul>
<li>Bachelor of Science (BS) Degree in Computer Science, Information Technology (IT), Cybersecurity, or Engineering related field.</li>
<li>Active Q clearance required.&nbsp;</li>
<li>Candidates with TS/SCI clearance can be switched over to Q clearance easily</li>
</ul>
*All duties and responsibilities are not captured in this job description. To find out more, please reach out to the recruiter for this role*

Software Engineer

5+ years as a Software Engineer; microservice APIs; JS/TS, Angular/React, Java Spring; cloud deployment; Linux; Git/GitLab; IC security concepts; BS in CS/IT/Cybersecurity/Engineering; active Q clearance.

COMPANY OVERVIEW
XCEL Engineering, Inc. is an award-winning small business that provides trusted information technology, engineering, consulting and project management solutions and services to federal agencies and organizations. Originally founded in 1971 by professional engineers at the University of Tennessee, XCEL was acquired in 2003 by U.S. Army and Navy veterans and in 2023 became a MartinFed company. 
XCEL Engineering is a part of IT Lab Partners (ITLP) which was created to support a leading research facility in the East Tennessee region in recruiting the best and the brightest technical talent. Considering joining our impressive team today!
JOB OVERVIEW
Xcel Engineering is seeking qualified applicants for a Cloud Software Engineer who enjoys the intersection of application code and cloud infrastructure.
ESSENTIAL FUNCTIONS
<ul>
<li>Architect &amp; Build: Design and develop scalable software solutions leveraging core AWS services (EC2, S3, Lambda, Step Functions, SQS, SNS, RDS, and API Gateway).</li>
<li>Infrastructure as Code (IaC): Use Terraform to provision, manage, and version-control cloud resources, ensuring high availability and environmental parity.</li>
<li>Full-Stack Development: Write clean, maintainable, and efficient code in Python (for backend logic and automation) and JavaScript/Node.js (for web services and integrations).</li>
<li>Containerization: Manage application packaging and deployment using Docker, moving toward a microservices-based architecture.</li>
<li>Automate Everything: Maintain and optimize our AWS CI/CD pipelines, ensuring that every pull request in Git moves through a robust testing and deployment lifecycle.</li>
<li>Collaborate: Use Jira to track progress, participate in sprint planning, and contribute to a culture of transparency and technical excellence.</li>
</ul>
BASIC QUALIFICATIONS
<ul>
<li style="vertical-align:baseline;">Education: BS or MS in Computer Science (or a related technical field).</li>
<li style="vertical-align:baseline;">Experience: A minimum of 2+ years of professional experience in a software engineering role.</li>
<li style="vertical-align:baseline;">Cloud Proficiency: Hands-on experience developing and deploying software within AWS cloud infrastructure.</li>
<li style="vertical-align:baseline;">IaC Skills: Proven experience deploying and managing production-grade resources using Terraform.</li>
<li style="vertical-align:baseline;">Programming: High proficiency in Python and JavaScript (Node.js/React preferred).</li>
<li style="vertical-align:baseline;">DevOps Toolchain: Familiarity with Git (branching strategies, PR workflows), Jira, and AWS DevOps tools (CodeBuild, CodeDeploy, etc.).</li>
<li style="vertical-align:baseline;">Containers: Solid experience with Docker for creating, deploying, and managing containers.</li>
</ul>
DESIRED QUALIFICATIONS
<ul>
<li>Database: Experience with MySQL, PostgreSQL, DynamoDB or Aurora. </li>
<li>Observability: Using CloudWatch and OpenTelemetry for system health. </li>
<li>Security: Understanding of IAM roles, policies, VPC security groups, and encryption. </li>
<li>AI: Familiarity with agentic AI design patterns, AI dev tool sets (AIOPs), and LLM integration. </li>
</ul>
PHYSICAL REQUIREMENTS &amp; ENVIRONMENTAL CONDITIONS 
<ul>
<li>Inside office environment.</li>
<li>Working on a computer for long periods of time.</li>
<li>May involve long period of sitting at a desk.</li>
<li>The work environment is fast-paced and sometimes involves extreme deadline pressures.</li>
</ul>
OTHER DUTIES 
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.
Xcel Engineering is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regards to race, color, religion, religious creed, gender, sexual orientation, gender identity, gender expression, transgender, pregnancy, marital status, national origin, ancestry, citizenship status, age, disability, protected Veteran Status, genetics or any other characteristics protected by applicable federal, state or local law. 
If you are a qualified individual with a disability or disabled veteran, you have the right to request a reasonable accommodation if you are unable or limited in your ability to use or access Xcel Engineering's current openings as a result of your disability. You can request reasonable accommodations by calling 855.212.1810. Thank you for your interest in Xcel Engineering. 
 
All positions at Xcel Engineering, Inc. are contingent upon passing both a background check and drug screening prior to a start date and are subject to random drug screenings during the employment period. In addition, Xcel Engineering is an E-Verify employer.

Cloud Software Engineer

BS or MS in Computer Science, 2+ years software engineering, AWS experience, Terraform, Python, JavaScript, Docker, Git/Jira, AWS DevOps tools.

Feiyi Wang

COMPANY OVERVIEW
XCEL Engineering, Inc. is an award-winning small business that provides trusted information technology, engineering, consulting and project management solutions and services to federal agencies and organizations. Originally founded in 1971 by professional engineers at the University of Tennessee, XCEL was acquired in 2003 by U.S. Army and Navy veterans and in 2023 became a MartinFed company. 
XCEL Engineering is a part of IT Lab Partners (ITLP) which was created to support Oak Ridge National Laboratory (ORNL) in recruiting the best and the brightest technical talent to East Tennessee region. ORNL delivers scientific discoveries and technical breakthroughs needed to realize energy and national security solutions and provides economic benefit to the nation. This premier research institution near Knoxville in Oak Ridge, TN, addresses national needs through impactful research and world-leading research centers.
Considering joining our impressive team supporting ORNL today! 
JOB OVERVIEW
XCEL Engineering is&nbsp;seeking a highly motivated and adaptable Full Stack Developer to support the American Science Cloud / Genesis Project. This role is ideal for a driven professional who thrives in fast-paced environments and brings a "can-do" attitude to solving complex technical challenges. You will play a key role in designing and developing modern, intelligent user interfaces powered by emerging Agentic AI systems.
ESSENTIAL FUNCTIONS
<ul>
<li>Design, develop, and maintain responsive, high-performance front-end applications</li>
<li>Collaborate with cross-functional teams to integrate AI-driven features into user interfaces</li>
<li>Work within fast-paced, iterative development cycles to deliver production-ready solutions</li>
<li>Implement and optimize workflows leveraging Agentic AI frameworks</li>
<li>Contribute to architecture decisions and front-end best practices</li>
<li>Integrate APIs and backend services using modern development standards</li>
<li>Participate in code reviews, testing, and continuous improvement processes</li>
<li>Support deployment and scaling of applications within the American Science Cloud ecosystem</li>
</ul>
BASIC QUALIFICATIONS
<ul>
<li>U.S. Citizen with ability to obtain a security clearance.&nbsp;</li>
<li>Bachelor's Degree in Computer Science, Software Engineering, or related field</li>
<li>5+ years of professional experience in front-end or full-stack development</li>
<li>Strong proficiency in:</li>
<li>Experience working with Agentic AI systems or AI-driven development environments</li>
<li>Hands-on experience with tools such as Claude Code and OpenClaw</li>
<li>Proven ability to work effectively in fast-paced, dynamic project environments</li>
<li style="tab-stops: list .5in;">Strong problem-solving skills and a proactive, "can-do" mindset</li>
</ul>
DESIRED QUALIFICATIONS
<ul>
<li>Master's Degree in Computer Science, Engineering, or related discipline</li>
<li>Experience working on large-scale cloud-based platforms or government-related projects</li>
<li>Familiarity with modern front-end frameworks (React, Vue, etc.)</li>
<li>Experience integrating AI/ML models into production applications</li>
<li style="tab-stops: list .5in;">Strong understanding of UI/UX principles and performance optimization</li>
</ul>
PHYSICAL REQUIREMENTS &amp; ENVIRONMENTAL CONDITIONS 
<ul>
<li>Inside office environment.</li>
<li>Working on a computer for long periods of time.</li>
<li>May involve long period of sitting at a desk.</li>
<li>The work environment is fast-paced and sometimes involves extreme deadline pressures.</li>
</ul>
OTHER DUTIES 
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.
Xcel Engineering is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regards to race, color, religion, religious creed, gender, sexual orientation, gender identity, gender expression, transgender, pregnancy, marital status, national origin, ancestry, citizenship status, age, disability, protected Veteran Status, genetics or any other characteristics protected by applicable federal, state or local law. 
If you are a qualified individual with a disability or disabled veteran, you have the right to request a reasonable accommodation if you are unable or limited in your ability to use or access Xcel Engineering's current openings as a result of your disability. You can request reasonable accommodations by calling 855.212.1810. Thank you for your interest in Xcel Engineering. All positions at Xcel Engineering, Inc. are contingent upon passing both a background check and drug screening prior to a start date and are subject to random drug screenings during the employment period. In addition, Xcel Engineering is an E-Verify employer.

Full Stack Developer

5+ years front-end/full-stack development; BS in CS or related field; US citizenship with ability to obtain security clearance; strong JS/TS and Python; experience with AI-enabled UI features.

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