Secure Software Application Developer

Leidos’ Security Enterprise Solutions (SES) operation is seeking a Secure Software Application Developer in Tewksbury, MA to join our cross-functional engineering team using cutting edge technology to develop truly novel solutions that make travel and trade safer, healthier, and more efficient on a global level.

We are currently seeking candidates local to the Tewksbury, MA area. This position offers a flexible hybrid work schedule, with the opportunity to telework two days per week. Additionally, enjoy a 9/80 work schedule—giving you every other Friday off!

The Secure Software Application Developer focuses on designing and coding functional software programs and applications that meets the customer needs. Builds and integrate security into software applications. Responsible for creating secure code, identifying vulnerabilities, and implementing security best practices throughout the software development lifecycle. This includes designing secure solutions, conducting code reviews, developing security tools, and collaborating with development and security teams. 

Key Responsibilities:

• Software Development: Creating new applications or modifying existing ones to meet specific needs. 
• Secure Code Development: Writing code that is resistant to common vulnerabilities and exploits. Ensures that security is not an afterthought but an integral part of the software development process.
• Troubleshooting and Debugging: Identifying and resolving issues, errors, and security vulnerabilities in applications. 
• Vulnerability Assessment: Identifying and mitigating security weaknesses in software through code reviews, static analysis, and penetration testing. 
• Security Tool Development: Creating and maintaining tools and scripts to automate security tasks and improve the security posture of applications. 
• Collaboration: Working with development and security teams to integrate security considerations into the software development lifecycle.  Acts as a bridge between the development and security teams
• Security Training and Guidance: Providing security training and guidance to other developers. 

Skills and Qualifications:

• Requires BS degree in Computer Science and 4+ years of prior relevant experience or master’s with 2+ years of prior relevant experience. May consider additional years of experience and/or certifications in lieu of a degree.
• Must have the ability to obtain a Public Trust clearance (US citizenship required).
• Strong Programming Skills: Proficiency in languages like C# and C++. 
• Knowledge of Security Principles: Understanding of common security vulnerabilities (e.g., OWASP Top Ten), secure coding practices, and security standards. 
• Experience with Security Tools: Familiarity with static and dynamic analysis tools, penetration testing tools, and other security-related technologies. 
• Problem-Solving and Analytical Skills: Ability to identify and resolve security issues effectively. 
• Communication and Collaboration Skills: Ability to work effectively with development and security teams. 

Preferred Qualifications:

• Operating System: Experience with Windows Operating System configuration, Group Policies, Security patching, Certificate Management.
• Experience with Red Hat or other Linux OS.
• Development Environment: Visual Studio or Visual Studio Core.

The Leidos Security Enterprise Solutions (SES) team has developed a suite of integrated solutions for aviation, ports, borders, and critical infrastructure customers around the world. We provide automated threat detection for weapons, narcotics, explosives, contraband, and undeclared goods, as well as nuclear and radioactive materials, by leveraging industry leading screening technologies, AI/ML capabilities and advanced biometric tools. We have more than 24,000 products deployed across 120 countries, including best-in-class security checkpoint and inspection systems for people, checked baggage and more.

Check out the links below to learn more about Security Enterprise Solutions (SES)
https://careers.leidos.com/pages/security-enterprise-solutions   
https://www.leidos.com/markets/aviation/security-detection  

Original Posting:

June 23, 2025

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $85,150.00 - $153,925.00

The Leidos pay range for this job level is a general guideline only and 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.