Full Stack Engineer - Python/JavaScript

Xcel Engineering; Oak Ridge (TN); On-site; USD 110,000 - 150,000; Full time

Job summary

XCEL Engineering seeks a versatile Full Stack Software Engineer to support Department of Energy projects in an on-site role at Oak Ridge, TN. You will design, develop, and maintain full-stack solutions using JavaScript, TypeScript, Python, and FastAPI across multiple concurrent projects with a security-focused approach.

Collaborate with cross-functional teams, participate in code reviews and testing, and contribute to DevOps practices including CI/CD, containers, and automated testing.

Qualifications

• Bachelor's degree in a scientific field or equivalent with 8 years of software development experience.
• ~ Bachelors degree in Computer Science, Software Engineering, or related field (or equivalent practical experience).
• 3+ years of professional full-stack development experience
• Experience with JavaScript, TypeScript, Python, and SQL
• Experience with FastAPI, Vue.js 2/3, PostgreSQL
• Ability to obtain facility clearances or background checks
• On-site work due to secure facility
• Experience with CI/CD, Docker, Kubernetes, and automated testing

Responsibilities

• Design, architect, and develop full-stack applications from concept to completion.
• Work on multiple simultaneous projects with varying timelines and scopes.
• Develop scalable backend services and APIs.
• Build responsive front-end interfaces aligned with UI/UX best practices.
• Participate in code reviews, testing, debugging, and performance optimization.
• Provide ongoing maintenance and technical support for deployed applications.

Skills

JavaScript

TypeScript

Python

SQL

FastAPI

Vue.js

PostgreSQL

CI/CD

Docker

Kubernetes

Automated testing

Security compliance

Education

Bachelor's degree in a scientific field or equivalent with 8 years of software development experience

Bachelor's degree in Computer Science, Software Engineering, or related field (or equivalent practical experience)

Tools

Docker

Kubernetes

CI/CD pipelines

GIT

Job description

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.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.

XCEL Engineering is seeking a versatile Full Stack Software Engineer to support multiple concurrent software projects within a Department of Energy (DOE) Research & Development environment. This role requires an on-site presence and close collaboration with technical teams, stakeholders, and government clients. The ideal candidate is comfortable working across the entire development lifecycle from gathering client requirements and translating concepts into technical designs, through development, testing, deployment, and long-term support. Candidates must be adaptable, detail-oriented, and capable of managing multiple priorities in a structured, security-focused environment.

• Design, architect, and develop full-stack applications from concept to completion.
• Work on multiple simultaneous projects with varying timelines and technical scopes.
• Develop scalable backend services and APIs.
• Build responsive, user-friendly front-end interfaces aligned with UI/UX best practices.
• Participate in code reviews, testing, debugging, and performance optimization.
• Provide ongoing maintenance, enhancements, and technical support for deployed applications.

• Bachelor's degree in a scientific field or equivalent combination of education and experience coupled with 8 years of software development experience.
• ~ Bachelors degree in Computer Science, Software Engineering, or related field (or equivalent practical experience).
• ~3+ years of professional full-stack development experience
• ~ JavaScript, TypeScript, Python, SQL
• ~ Backend Frameworks-Fast API
• ~ Frontend FrameworksVue.js 2 & Vue.js 3
• ~ Databases-PostgreSQL
• ~ Demonstrated experience delivering production-ready applications end-to-end.
• Ability to obtain and maintain any required facility clearances or background checks.
• Work Environment On-site presence is required due to the secure nature of the facility.
• Opportunity to contribute to projects with national-level impact and long-term technical value.
• Java development experience
• Familiarity with CI/CD pipelines and DevOps practices
• Containerization technologies (Docker, Kubernetes)Experience with automated testing frameworks

Physical Requirements & Environmental Conditions

• Inside office environment.
• Working on a computer for long periods of time.

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.