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Appsec Engineer Jobs (NOW HIRING)

AgileEngine

Lead AppSec Engineer ID71666

Boca Raton, FL · On-site

$97K - $127K/yr

ABOUT THE ROLE We are looking for a Tech Lead Application Security Engineer to serve as the regional delivery anchor for a follow-the-sun program, leading a cross-functional pod across ASPM ...

New

AgileEngine

Lead AppSec Engineer ID71666

Houston, TX · On-site

$97K - $128K/yr

ABOUT THE ROLE We are looking for a Tech Lead Application Security Engineer to serve as the regional delivery anchor for a follow-the-sun program, leading a cross-functional pod across ASPM ...

New

AgileEngine

Lead AppSec Engineer ID71666

Richmond, VA · On-site

$100K - $132K/yr

ABOUT THE ROLE We are looking for a Tech Lead Application Security Engineer to serve as the regional delivery anchor for a follow-the-sun program, leading a cross-functional pod across ASPM ...

New

ManTech

Application Security Engineer

Hanover, MD · On-site

$165K - $295K/yr

The Application Security (AppSec) Engineer will leverage their strong technical background and knowledge to support software assurance and security initiatives for a mission-critical organization ...

ManTech

Application Security Engineer

Hanover, MD

$141K - $236K/yr

The Application Security (AppSec) Engineer will leverage their strong technical background and knowledge to support software assurance and security initiatives for a mission-critical organization ...

AgileEngine

Lead AppSec Engineer ID71666

Blacksburg, VA · On-site

$87K - $115K/yr

ABOUT THE ROLE We are looking for a Tech Lead Application Security Engineer to serve as the regional delivery anchor for a follow-the-sun program, leading a cross-functional pod across ASPM ...

New

AgileEngine

Lead AppSec Engineer ID71666

Port Charlotte, FL · On-site

$91K - $121K/yr

ABOUT THE ROLE We are looking for a Tech Lead Application Security Engineer to serve as the regional delivery anchor for a follow-the-sun program, leading a cross-functional pod across ASPM ...

New

AgileEngine

Lead AppSec Engineer ID71666

Jersey City, NJ · On-site

$107K - $140K/yr

ABOUT THE ROLE We are looking for a Tech Lead Application Security Engineer to serve as the regional delivery anchor for a follow-the-sun program, leading a cross-functional pod across ASPM ...

New

AgileEngine

Lead AppSec Engineer ID71666

Miami, FL · On-site

$97K - $128K/yr

ABOUT THE ROLE We are looking for a Tech Lead Application Security Engineer to serve as the regional delivery anchor for a follow-the-sun program, leading a cross-functional pod across ASPM ...

New

AgileEngine

Lead AppSec Engineer ID71666

West Palm Beach, FL · On-site

$99K - $130K/yr

ABOUT THE ROLE We are looking for a Tech Lead Application Security Engineer to serve as the regional delivery anchor for a follow-the-sun program, leading a cross-functional pod across ASPM ...

New

AgileEngine

Lead AppSec Engineer ID71666

Chicago, IL · On-site

$105K - $139K/yr

ABOUT THE ROLE We are looking for a Tech Lead Application Security Engineer to serve as the regional delivery anchor for a follow-the-sun program, leading a cross-functional pod across ASPM ...

New

AgileEngine

Lead AppSec Engineer ID71666

Boston, GA · On-site

$84K - $110K/yr

ABOUT THE ROLE We are looking for a Tech Lead Application Security Engineer to serve as the regional delivery anchor for a follow-the-sun program, leading a cross-functional pod across ASPM ...

New

AgileEngine

Lead AppSec Engineer ID71666

Irving, IL · On-site

$89K - $117K/yr

ABOUT THE ROLE We are looking for a Tech Lead Application Security Engineer to serve as the regional delivery anchor for a follow-the-sun program, leading a cross-functional pod across ASPM ...

New

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All JobsAppsec Engineer Jobs

Appsec Engineer information

What are the key skills and qualifications needed to thrive as an AppSec Engineer, and why are they important?

To thrive as an AppSec Engineer, you need a solid understanding of application security principles, secure coding practices, and vulnerability assessment, typically supported by a degree in computer science or a related field. Familiarity with tools like static and dynamic application security testing (SAST/DAST), OWASP frameworks, and certifications such as CISSP or OSCP is highly valued. Strong analytical thinking, problem-solving abilities, and effective communication skills help you collaborate across development and security teams. These skills are crucial for identifying, mitigating, and preventing security risks in software applications, thereby protecting organizational assets and user data.

What does an AppSec Engineer do?

An Application Security (AppSec) Engineer is responsible for ensuring the security of software applications by identifying and mitigating vulnerabilities throughout the software development lifecycle. They work closely with development teams to implement secure coding practices, perform code reviews, conduct security assessments, and respond to security incidents. Additionally, AppSec Engineers often use automated tools to scan for security flaws and help educate teams on the latest security threats and best practices.

What are some common challenges Appsec Engineers face when collaborating with development teams?

Appsec Engineers often work closely with software developers to integrate security best practices into the development lifecycle. A common challenge is balancing security requirements with project timelines and feature delivery, as development teams may prioritize speed over thorough security reviews. Effective communication and the ability to educate colleagues about secure coding practices are essential for overcoming these challenges. Additionally, Appsec Engineers may need to adapt to various development methodologies, such as Agile or DevOps, which can impact how and when security is incorporated into projects.
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Appsec Engineer jobs near you
Infographic showing various Appsec Engineer job openings in the United States as of June 2026, with employment types broken down into 100% Full Time. Highlights an 72% Physical, 5% Hybrid, and 23% Remote job distribution.
Application Security Engineer

Application Security Engineer

ManTech International Corporation

Hanover, MD • On-site

$141K - $236K/yr

Other

Medical, Life, Retirement, PTO

Posted 5 days ago

ManTech rating

9.0

Company rating: 9.0 out of 10

Based on 14 frontline employees who took The Breakroom Quiz

27th of 202 rated software companies

Job description

Description & Requirements
Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now-unleash your potential with MANTECH!
MANTECH seeks a motivated, career and customer-oriented Application Security (AppSec) Engineer to join our team in Hanover, MD.
The Application Security (AppSec) Engineer will leverage their strong technical background and knowledge to support software assurance and security initiatives for a mission-critical organization within the Intelligence Community, focusing on secure and reliable data dissemination through rigorous source code analysis.
Responsibilities include but are not limited to:
  • Utilizing, fine-tuning, and evaluating the suitability of automated Software Assurance (SwA) tools for specific customer environments to maximize detection and minimize false positives.
  • Interpreting SwA tool results to detect vulnerabilities, triage findings, and drive secure coding practices across the development lifecycle.
  • Developing and executing test methodologies, custom scoring criteria, and specific test cases to support and optimize SwA tool analysis.
  • Performing software security assessments and interfacing with clients and developers to recommend effective remediation strategies for identified code vulnerabilities.
  • Creating technical documentation, comprehensive vulnerability test reports, and risk assessments for leadership.
  • Researching and assessing emerging SwA tools and methodologies to continually enhance the team's software security analysis capabilities.
Minimum Qualifications:
  • 12+ years of professional experience (or 10+ years with a Bachelor’s degree, or 8+ years with a Master’s degree) in Systems Security Engineering, Software Programming, or Computer Science.
  • Strong, hands-on experience in C/C++ or C#, with the ability to read/analyze Java.
Preferred Qualifications:
  • Experience with technology tools including Klocwork, CodeSonar, Fortify, CodePeer, IDA Pro, or Fortran-Lint.
  • Experience with low-level architectures (x86_64, PowerPC, MIPS), assembly language (ASM), or legacy languages like Ada.
  • Experience with Rust and/or the ability to learn.
Clearance Requirements:
  • An active TS/SCI with Polygraph.
Physical Requirements:
  • Must be able to remain in a stationary position 50% of the time.
  • Needs to occasionally move about inside the office to access file cabinets, office machinery, and constant operation of a computer.
  • Frequently communicates with co-workers, management, and customers, which may involve delivering presentations.
  • Must be able to exchange accurate information in these situations

The projected compensation range for this position is $141,500.00-$236,000.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.
MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.
If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.

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