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Appsec Engineer Jobs (NOW HIRING)

ManTech

Application Security Engineer

Hanover, MD

$165.90K - $295.30K/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 ...

StartupTAP

Lead AI AppSec Engineer

Irvine, CA · On-site

$63 - $84.25/hr

This role will be one of the first dedicated application security engineers focused on embedding security into the platform and AI-enabled applications from the beginning. This is a hands-on ...

StartupTAP

Lead AI AppSec Engineer

Irvine, CA

$63 - $84.25/hr

Application Security Engineer For AI Platform Capital Group is building an internal AI platform to support enterprise AI solutions across the organization. This role will be one of the first ...

StartupTAP

Lead AI AppSec Engineer

Manhattan, NY

$64.75 - $86.50/hr

This role will be one of the first dedicated application security engineers focused on embedding security into the platform and AI-enabled applications from the beginning. This is a hands-on ...

Corgea

Software engineer - California

San Mateo, CA · On-site +1

Base pay range $100.00/yr - $180.00/yr Company Overview Corgea is a Y-Combinator backed AI AppSec engineer that automatically finds, triages and fixes your insecure code. We're building the next ...

Corgea

Software engineer - California

San Mateo, CA · On-site +1

Base pay range $100.00/yr - $180.00/yr Company Overview Corgea is a Y-Combinator backed AI AppSec engineer that automatically finds, triages and fixes your insecure code. We're building the next ...

Unisys

Application Security Engineer

Rockville, MD · On-site

$60 - $80/hr

AppSec Engineer Location: Rockville, MD or Tysons, VA (3 days onsite in a week) * Pen testing * SAST / DAST * Burp suite * OWASP Top 10 * Can read code (java, python, etc.) * AI/GenAI JD: * Plan ...

Harness

AppSec Sales Engineer

$60.25 - $80.25/hr

Harness is the AI Software Delivery Platform company, and they are seeking an AppSec Sales Engineer to bridge sales and engineering. The role involves delivering technical presentations, managing ...

Racwa

$54.75 - $73.25/hr

As a Senior Software Engineer - Application Security (AppSec), you will uplift the developer ecosystem by optimising development tooling, workflows, and security controls. You will work cross ...

Everpure

Senior Security Engineer - AppSec

Santa Clara, CA

$134.50K - $184.40K/yr

... developer velocity. * Establish and drive company-wide AppSec standards, baselines, and metrics in partnership with Security Architecture, translating abstract compliance guidelines into practical ...

Harness

AppSec Sales Engineer

San Francisco, CA · Remote

$69.25 - $92.50/hr

Position Summary The AppSec Sales Engineer is the technical liaison who bridges sales and engineering, expertly articulating the technology and product positioning of our AI-Native DevSecOps platform ...

Capital One

Senior Product Manager, AppSec

Plano, TX · On-site

$121.10K - $159.80K/yr

Engineering Partnership: Act as the primary liaison to Security Engineering Enablement and ... Evangelize the AppSec mission through Office Hours and community forums; simplifying complex ...

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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 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.

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.
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Infographic showing various Appsec Engineer job openings in the United States as of May 2026, with employment types broken down into 100% Full Time. Highlights an 56% In-person, 6% Hybrid, and 38% Remote job distribution.
Application Security Engineer

Application Security Engineer

ManTech International

Hanover, MD • On-site

$141.50K - $236K/yr

Full-time

Medical, Life, Retirement, PTO

Posted yesterday

ManTech rating

8.8

Company rating: 8.8 out of 10

Based on 13 frontline employees who took The Breakroom Quiz

31st of 185 rated software companies

Job description

General information
Requisition #
R68117
Locations
USA-MD-Hanover
Posting Date
06/01/2026
Security Clearance Required
TS/SCI w/ Poly
Remote Type
Onsite
Time Type
Full time
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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