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Added 2 hours ago
A
AI Engineer SME
AnaVation
Chantilly, VA
- $95,352.72 to $212,566.06 USD / year
This position requires an active Top Secret (TS) clearance and the ability to obtain SCI access with a CI polygraph. This position is on-site in Chantilly, VA.
Added 4 hours ago
W
Artificial Intelligence Machine Learning Skill Level 1
Wyetech
Annapolis Junction, MD
- $20 to $50 USD / hour
Required Clearance: Active TS/SCI with Full Scope Polygraph (in scope within the past 7 years)
Added 5 hours ago
Java Cloud Software Engineer TS/SCI w Poly
Peraton
Annapolis Junction, MD
Active TS/SCI with current polygraph required
Added 6 hours ago
Kubernetes Application Software Engineer
Peraton
Laurel, MD
Active TS/SCI with current Polygraph required
Added 6 hours ago
Full Stack Java Cloud Software Engineer
Peraton
Annapolis Junction, MD
Active TS/SCI with current polygraph required
Added 8 hours ago
Senior Application Developer
Belay Technologies
Annapolis Junction, MD
Belay Technologies is seeking a Senior Application Developer to join our intel team. You will act as a general-purpose Software Engineer and CNO Reverse Engineer for up-and-coming projects…
Added 8 hours ago
Windows System Administrator, Sr.
Unisity, LLC
Annapolis Junction, MD
…appropriate security clearance is required. (e.g. Active TS/SCI security clearance with customer appropriate…
Added 8 hours ago
SOFTWARE INTEGRATION ENGINEER - Linux/Bash/Jira - 8+ yrs of Experience - TS/SCI w/Poly clearance is required - ID - 542
Halogen Engineering Group, Inc
Annapolis Junction, MD
Generate documentation for the full software stack.
Added 8 hours ago
W
ID Software Integration Engineer (SIE) Level 3
Wyetech
Annapolis Junction, MD
- $82.14 to $103.82 USD / hour
Required Clearance: Active TS/SCI with Full Scope Polygraph
Added 1 day ago
Sr. Full Stack Developer
Ideal Innovations
Bethesda, MD
As a Sr. Full Stack Developer on this program, you will have the opportunity to build strong systems, software, and cloud environments and provide operations and maintenance for critical…
Added 1 day ago
Cognitive AI Engineer SWE
Bigbear.ai
Annapolis Junction, MD
Design, develop, and maintain full-stack applications across frontend and backend systems.
Added 1 day ago
Digital Signal Processing Software Engineer
Booz Allen Hamilton_United States
McLean, VA
Develop full-stack software applications that integrate digital signal processing algorithms and RF theory techniques. Apply leading-edge principles, theories, and concepts and contribute…
Added 1 day ago
Senior Full Stack Developer
LEIDOS, INC.
Reston, VA
Leidos is looking for a Senior Full Stack Developer / Senior Software Engineer to guide the technical support, development, and expansion of our core application ecosystem. In this role,…
Added 1 day ago
Sr. Full Stack Developer
LEIDOS, INC.
Bethesda, MD
This is an excellent opportunity for an accomplished software developer to apply their expertise in full stack development, cloud technologies, and modern DevOps practices while…
Added 1 day ago
Senior Full Stack Developer
LEIDOS, INC.
Bethesda, MD
As a Full Stack Developer on this program, you will have the opportunity to build strong systems, software, and cloud environments and provide operations and maintenance for critical…
Added 1 day ago
Senior Application Developer (Full Stack)
Belay Technologies
Fort Meade, MD
Belay Technologies is seeking a Senior Application Developer to join our intel team. You will operate as a Full Stack Software Engineer on the Enduring Targets, Global Technology section's…
Added 1 day ago
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Software Engineer (SWE) Skill Level 2,Software Engineer (SWE) Skill Level 3
Wyetech
Fort Meade, MD
- $86.14 to $122.7 USD / hour
Required Clearance: Active TS/SCI with Full Scope Polygraph
Added 1 day ago
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System Engineer Skill Level 6
Wyetech
Fort Meade, MD
- $100.3 to $126.76 USD / hour
Required Clearance: Active TS/SCI with Full Scope Polygraph
Added 1 day ago
Lead, Software Engineer - TS/SCI
L3Harris
Palm Bay, FL
…matter. You will work on a wide range of projects, from modern full-stack web applications using React, TypeScript, JavaScript, Python, Docker, and Linux to embedded software integrated…
Added 1 day ago
System Development Engineer II, NW ADC Software Operations - NASO
Amazon
Seattle, WA
This position requires that the candidate selected must currently possess and maintain an active TS/SCI security clearance. The position further requires that, after start, the selected…
Added 2 days ago
Software Developer 803
Freedom Technology Solutions Group
Annapolis Junction, MD · Columbia, MD
We are seeking a Software Developer for one of our PRIME CONTRACTS that offers exciting opportunities to support essential services and mission critical activities across the enterprise.…
Added 2 days ago
AI and ML Software Engineer
Booz Allen Hamilton_United States
Chantilly, VA
…and we’re looking for a software engineer like you to create full-stack applications that integrate enterprise AI/ML services, including LLMs, to solve tough problems. As a full stack…
Added 2 days ago
Principal Full Stack Software Engineer
Iron EagleX Inc
United States
Hands-on experience with full stack development and a strong understanding of the software development life cycle.
Added 2 days ago
Web Developer
The Red Gate Group, Limited
Reston, VA
You will bring expert-level SharePoint and web development skill to the full stack of the work: developing dashboards, workflows, and custom web applications, and managing front-end…
Added 2 days ago
Senior Software Engineer (RC-3)
Legato, LLC
Annapolis Junction, MD
Experience developing scalable, cloud-based applications and modern full-stack software solutions

Castalia Systems

Full Stack Software Engineer – Mid

Joint Base Anacostia- Bolling (JBAB), DC, United States

The projected compensation range for this position is $95,000.00 to $100,000.00 (annualized USD).

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Job details

Pay: The projected compensation range for this position is $95,000.00 to $100,000.00 (annualized USD).
Working hours: 30 hours per week
Posting language: English
Posted: Sep 29, 2026

Original job description

Job Type: Full- Time

Workplace Type: Onsite

Clearance: TS/SCI willingness to take a polygraph exam

Must be a U.S. Citizen

Job Summary

Systems is seeking a Mid-Level Full Stack Software Engineer with the skills needed to develop, integrate, test, and maintain software capabilities from requirements through production delivery. You’ll work across the technology stack and collaborate with other engineers, architects, product owners, and mission stakeholders to translate requirements into reliable and maintainable software solutions.

Roles and Responsibilities

A qualified candidate will perform the following duties and responsibilities, but are not limited to:

Use modern development tools, frameworks, and cloud technologies to solve challenging technical and mission problems.
Develop backend services, APIs, data integrations, and user-facing capabilities while working within established application architectures and engineering standards.
Participate in technical design discussions, troubleshoot application issues, conduct code reviews, and contribute to improvements in software quality and maintainability.
Work alongside senior engineers to evaluate technical approaches, learn new tools and technologies, and continuously improve the team's development and delivery practices.

Required Qualifications

Bachelor's degree in Computer Science, Engineering, Information Technology, or a related technical field, or additional software engineering experience in lieu of a degree.
4+ years of experience in software engineering, including developing, testing, integrating, or maintaining software applications.
3+ years of experience developing applications using Python, Java, or another object-oriented programming language.
2+ years of experience developing web applications using frontend technologies or frameworks, such as React or Angular.
Experience developing or integrating backend services and RESTful APIs.
Experience developing applications using relational databases, such as PostgreSQL, and working with SQL.
Experience working within Agile software development environments using methodologies such as Scrum or Kanban.
Experience using software development and task management tools, such as Jira.
TS/SCI clearance with a polygraph.

Preferred Qualifications

Experience developing production applications with Python.
Experience developing enterprise web applications.
Experience with microservices, distributed systems, or event-driven architectures.
Experience with AWS cloud-native or serverless application development.
Experience with Infrastructure as Code technologies such as CloudFormation.
Experience building or maintaining CI/CD pipelines (Gitlab, Github Actions, Jenkins).
Experience with Kubernetes or other container orchestration technologies.
Experience with automated unit, integration, or end-to-end testing.
Experience with application authentication, authorization, logging, monitoring, or observability.
Experience working in DevSecOps software delivery environments.

Physical Requirements/Work Environment

Normal office environment.

Travel

As required

Company Description

Castalia Systems is a proven business partner providing mission critical solutions to the Federal Government. We provide cutting edge solutions from Securing and Managing Data to Systems Engineering and Development. Castalia Systems is a pioneer in Artificial Intelligence Design and Application.

With our vast knowledge of our customers’ needs and relevant technology, our team is able to bring successful solutions to every mission. We are one-upping our competitors by providing premium IT solutions and platforms with cutting-edge technology so it’s so evident when you compare us with anyone.

Compensation

At Castalia Systems, we provide you with opportunities and choices and support your total well-being. Our benefits include: Medical, dental, vision coverage, 401k matching, generous PTO, paid holidays, professional training opportunities, and even pet insurance to ensure your furry friends are cared for too. All regularly scheduled employees working at least 30 hours per week are eligible to participate in Castalia Systems’ benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits.

Salary at Castalia Systems is determined by various factors, including but not limited to location, position knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $95,000.00 to $100,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Castalia Systems’ total compensation package for employees.

Disclaimer

Castalia Systems is an equal employment opportunity and affirmative action employer and strives to comply with all applicable laws prohibiting discrimination based on race, color, creed, sex, sexual orientation, age, national origin, or ancestry, physical or mental disability, veteran status, marital status, HIV-positive status, as well as any other category protected by federal, state, or local laws. All such discrimination is unlawful, and all persons involved in the operations of the company are prohibited from engaging in this type of conduct.

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More about this job

Skills

Cloud technologies
Troubleshoot
Computer science
Computer technology
Python
Oracle Java
Object-oriented programming
React
API development
PostgreSQL
SQL
Agile
Software development
Scrum
Kanban
Manage schedule of tasks
Jira
Microservices
AWS
Infrastructure as code
CI/CD
GitLab
GitHub
Jenkins
Kubernetes

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