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Senior Software Engineer III Security Clearance

Job in Tysons, Fairfax County, Virginia, USA
Listing for: Cornerstone Defense
Full Time position
Listed on 2025-12-29
Job specializations:
  • IT/Tech
    Systems Engineer, Cloud Computing
Job Description & How to Apply Below
Position: Senior Software Engineer III with Security Clearance
Senior Software Engineer III Tysons Corner, VA Active TS/SCI with Poly Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation's toughest and most secure problems.

If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don't look any further than Cornerstone Defense.

Job Responsibilities:

* Youll work with AI team members to operationalize data pipelines and ML tasks
* Youll provide day-to-day support of deploying Python-native ML pipelines
* Youll support architectural leadership, technical support, and advisement services to ensure identity management system technologies are integrated and meeting the appropriate security requirements
* You'll support leadership who engage with senior level executives at a public facing Federal agency and provide subject matter expertise in security architecture and other key domain areas

Required Skills:

* A minimum of 10 years of experience in the Information Technology field, focusing on development projects using Dev Sec Ops  and AWS cloud environments
* A bachelor's degree in Computer Science, Information Technology Management or Engineering, or other comparable degree; or equivalent experience in leu of degree
* Active TS/SCI CI Poly clearance
* At least 8 years of specific experience with full stack engineering (defined as proficient in database development/integration as well as server and client application development/integration), including at least 8 years of experience deploying production enterprise applications in AWS
* Expert-level experience designing, developing, and deploying applications leveraging AWS cloud services in IL6+ classified environments
* Expert experience in large-scale, high-performance enterprise big data application deployment and solution architecture on complex heterogeneous environments in AWS
* Expert experience leading automation, engineering, testing, and implementation tasks in cloud environments, including work across data, AI/ML, infrastructure/operations, and security.
* You have 8+ years of experience with multiple of the following:
Go, Python, Java, JavaScript, React, Angular

JS, Type Script, NextJS Company Benefits:
Cornerstone Defense offers a comprehensive list of benefits, designed to give employees and their families several options to choose from when selecting benefits that best fit their needs. These offerings include not only a full suite of the traditional Medical/Dental/Vision insurances, but also a number of other benefits and perks to include, but not limited to: A 401(K) plan with a company match, tuition and training assistances, paid vacation/leave, a fitness reimbursement program, college savings plan, commuter benefits, financial advisory services, flex spending accounts, health savings accounts, STD/LTD coverage, life and AD&D insurance, employee assistance programs, life financial planning assistance, and legal resources.
Position Requirements
10+ Years work experience
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