Senior Full Stack Developer

Senior Full Stack Software Engineer – Leidos

Leidos is seeking a talented Senior Full Stack Software Engineer to join our team to support our customer. The incumbent will support the transformation of our current development environment and will be responsible for gathering requirements and design, codifying, integrating and implementing secure solutions that support business functionality as well as the underlying infrastructure required to deploy and run those solutions.

• Develop, document, and implement CI/CD strategy for management of Infrastructure as Code (IaC) baseline.
• Develop and document shared infrastructure component management strategy to provide consistent standardized container, OS, and application baselines for components available through self‑service.
• Identify requirements, develop, document, and implement branching strategy to support change management requirements while automating as much of the deployment process as practical in the CI/CD pipeline (including Selenium, Prometheus, Cucumber, or other Dev Sec Ops  tools for system debugging).
• Review, debug, and resolve technical issues throughout all stages of SDLC.
• Assist with process development and improvement for Security Operations, including creation/modification of SOPs, playbooks, and work instructions.
• Measure effectiveness of process improvement and automation efforts via metrics and KPIs.
• Perform integration activities to connect with third‑party software APIs.
• Design, implement, and maintain efficient and reusable Python code and leverage C#, Power Shell or JavaScript.
• Analyze user needs and software requirements to determine feasibility of design within time and cost constraints.
• Apply coding and testing standards, security testing tools (including fuzzing and static‑analysis), threat modeling, and conduct code reviews.
• Conduct trial runs of programs and applications to ensure desired information is produced and instructions are correct.
• Evaluate reporting formats, cost constraints, and security restrictions to determine hardware configuration.
• Identify common coding flaws.
• Identify security issues in steady‑state operation and management of software.
• Incorporate security measures required when a product reaches end of life.
• Perform integrated quality assurance testing for security functionality and resiliency attacks.
• Identify potential code flaws to mitigate vulnerabilities.

• U.S. Citizenship and active DoD TS/SCI US Clearance.
• Bachelor's Degree and a minimum of 12 years of directly relevant technical experience. Additional experience may be considered in lieu of a degree.
• 6+ years’ experience designing, building, and modifying standalone application software.
• 6+ years’ experience developing in SharePoint, 2+ years within SharePoint 2019.
• 5+ years’ experience developing in an Agile environment.
• 5+ years’ experience working in a virtual infrastructure.
• Proficient in JavaScript, jQuery, Bootstrap, REST API, .NET, Visual Studio, SharePoint Designer workflows, SPFx, Node.js, React, JSON, HTML/CSS, XML.
• Extensive experience in the design and automation of security tools and processes.
• Extensive experience in development, APIs, and scripting language support.
• Experience implementing and maintaining services in a CI/CD pipeline.
• Experience with code repositories such as Git Lab.

• Experience working in virtual environments.
• Experience working in AWS and Azure.
• Experience with SOAR platforms such as Swimlane, Phantom, Demisto, etc.
• Authoring of SOPs, playbooks, work instructions, and other process documents.

Pay Range $ – $. The Leidos pay range for this job level is a general guideline only and is not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, health and wellness programs, income protection, paid leave and retirement. More details are available at

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.