1

Codex Jobs in Frederick, MD (NOW HIRING)

Experience with AI-assisted development tools (e.g., Claude Code, Codex, GitHub Copilot). * Knowledge of air traffic management, flight services, or other safety-critical operational systems.

Experience with AI-assisted development tools (e.g., Claude Code, Codex, GitHub Copilot). * Knowledge of air traffic management, flight services, or other safety-critical operational systems.

Experience with AI-assisted coding (Claude Code, Codex etc.) * Experience with microservices and cloud-based environments * Knowledge of or experience with Python programming language * Knowledge of ...

Claude Code, Codex, etc.) * Experience with Cloud-based systems * Experience working within the Agile environment * Understanding of sound software development principles and practices * Ability to ...

Experience with AI-assisted coding (Claude Code, Codex etc.) * Experience with microservices and cloud-based environments * Knowledge of or experience with Python programming language * Knowledge of ...

Experience with AI-assisted coding (Claude Code, Codex etc.) * Experience with microservices and cloud-based environments * Knowledge of or experience with Python programming language * Knowledge of ...

Software Developer

Gaithersburg, MD · On-site

$69K - $125K/yr

Claude Code, Codex, etc.) * Knowledge of Cloud-based systems * Knowledge of unit testing tools such as Junit and Mockito * Understanding of sound software development principles and practices

Experience with AI-assisted coding (Claude Code, Codex etc.) * Experience with microservices and cloud-based environments * Knowledge of or experience with Python programming language * Knowledge of ...

Lead Software Developer

Gaithersburg, MD · On-site

$87K - $157K/yr

Claude Code, Codex, etc.) * Experience with Cloud-based systems * Experience working within the Agile environment * Understanding of sound software development principles and practices * Ability to ...

Java Software Engineer - Scrum Master

Gaithersburg, MD · Hybrid

$56 - $76.75/hr

Knowledge of or experience with AI-assisted coding (Claude Code, Codex etc.) * Knowledge of or experience with microservices and cloud-based environments * Knowledge of or experience with Python ...

Java Software Engineer - Scrum Master

Gaithersburg, MD · On-site

$56 - $76.75/hr

Knowledge of or experience with AI-assisted coding (Claude Code, Codex etc.) * Knowledge of or experience with microservices and cloud-based environments * Knowledge of or experience with Python ...

Codex information

What are popular job titles related to Codex jobs in Frederick, MD? For Codex jobs in Frederick, MD, the most frequently searched job titles are:
What job categories do people searching Codex jobs in Frederick, MD look for? The top searched job categories for Codex jobs in Frederick, MD are:
Infographic showing various Codex job openings in Frederick, MD as of August 2026, with employment types broken down into 94% Full Time, 1% Part Time, and 5% Contract. Highlights an 74% Physical, 5% Hybrid, and 21% Remote job distribution.

AWS Full Stack Developer Software Engineer - Principal I

Argo Cyber Systems

Dulles, VA • On-site

Full-time

Re-posted 14 days ago


Job description

AWS Full Stack Developer Software Engineer - Principal I

This is only open to current candidates that are US Citizens and currently hold a US DoW Secret or Top-Secret Clearance.
Argo Cyber is supporting a U.S. Government customer on a large mission critical development and sustainment program to sustain and operate a network operations environment, including introducing new cyber capabilities to address emerging threats. Cyber Offense and Defense Experts (CODEX) is seeking a skilled Full Stack Developer with expertise in AWS Cloud development, stage and production environments. This role involves contributing to the design, development, and deployment of advanced cybersecurity capabilities to support CISA's mission today and into the future.

Responsibilities may include, but are not limited to:

Infrastructure Engineering:
Design, test, and implement advanced cybersecurity software capabilities as a key contributor within Agile Scrum teams.
Support risk assessments and recommend risk mitigation strategies as required.
Full Stack Development:
Develop automated unit tests and debug thoroughly to ensure reliable, high-quality code.
Collaborate on Deployment, DevOps, and CI/CD processes to optimize pipelines and streamline workflows.
Establish and interpret monitoring systems for CI/CD processes to ensure operational effectiveness.

Qualifications:
U.S. Citizenship is required
Must have an active Secret clearance with the ability to obtain DHS suitability
Must be able to obtain a TS/SCI Clearance
8+ years of software development experience required
Minimum 2+ years with AWS SageMaker, Apache Zeppelin
Minimum 3+ years of Agile full stack infrastructure engineering experience with a focus on production AWS environments.

Desired Skills:
Experience with Databricks Notebooks and Visualization
Experience with AWS Lambda (Python)
Proven ability as a Full Stack Developer with experience in Agile/Scrum development methodologies.
Automated remediation expertise for security vulnerabilities.
Familiarity with:
CISA Guidance:
Securing the Software Supply Chain.
Open-Source Software Security.
General Cybersecurity Best Practices.
NIST Frameworks:
NIST SP 800-218 - Secure Software Development Framework.
Technical Expertise:
Knowledge of automated solutions using Ansible.

Desired Certifications:
Cloud Certification: AWS Certified Cloud Practitioner.
Cybersecurity Certifications: DoD 8570.1 IAT Level II or CSSLP.

Required Education:


Bachelor's degree in Software Engineering, Computer Science or a related discipline is required. [Ten (10) years of experience (for a total of eighteen (18) or more years) may be substituted for a degree.]


Background & Drug Screening Disclaimer

© Argo Cyber Systems, LLC – All Rights Reserved

Argo Cyber Systems, LLC is committed to maintaining a safe, secure, and trusted workplace for all employees and our federal clients. Employment with Argo Cyber Systems is contingent upon successful completion of all required background investigations and pre-employment screenings, which may include, but are not limited to:

  • Criminal background checks (federal, state, and local)

  • Employment and education verification

  • Reference checks

  • Drug screening (in compliance with federal and state law)

  • Security clearance verification (as applicable for classified positions)

Candidates selected for employment in positions requiring access to sensitive or classified information may also be subject to additional U.S. Government background investigations and security adjudication processes, including DHS Entry on Duty (EOD) suitability or equivalent federal clearance requirements.

Argo Cyber Systems reserves the right to disqualify or rescind an offer of employment based on the results of any background or screening process that, in the company's judgment, may impact an individual's ability to perform essential job functions or meet contractual obligations.

All background investigations and screenings are conducted in accordance with applicable federal, state, and local laws, including the Fair Credit Reporting Act (FCRA). Candidates will be notified of their rights and provided an opportunity to review and dispute any adverse findings before final employment determinations are made.