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Application Security Engineer Jobs in Seattle, WA

Senior Manager, Security Engineering

Seattle, WA · Hybrid

$130K - $178K/yr

This role is ideal for a seasoned security engineer or architect who is ready to step into formal people leadership - someone who can hold their own technically across application, network, cloud ...

Senior Manager, Security Engineering

Seattle, WA · On-site

$130K - $178K/yr

This role is ideal for a seasoned security engineer or architect who is ready to step into formal people leadership - someone who can hold their own technically across application, network, cloud ...

Senior Manager, Security Engineering

Seattle, WA · On-site

$130K - $178K/yr

They are seeking a Senior Manager, Security Engineering to lead the design and governance of security engineering capabilities across various domains including application and AI security.

In a given day, you might be inspecting an application's code for security issues, building a new framework to help our software developers build faster and more securely, or fine-tuning the design ...

In a given day, you might be inspecting an application's code for security issues, building a new framework to help our software developers build faster and more securely, or fine-tuning the design ...

Senior Manager, Security Engineering

Seattle, WA · On-site

$130K - $178K/yr

... the application security program, embedding secure-by-design principles across the SDLC and ... Engineer, directing AI/ML security assessments, MCP server security reviews, and AI agent risk ...

The AI Security Engineer exists to secure the university's AI platforms, primarily Purple, built on ... Required Qualifications To be considered for this opportunity your application must demonstrate you ...

The Staff AI Product Security Engineer joins a team with a clear mission: to shape the future of application security by researching and building systems that prove how AI can fundamentally augment ...

AI Security Engineer

Seattle, WA · On-site

$88 - $142/hr

The AI Security Engineer exists to secure the university's AI platforms, primarily Purple, built on ... To be considered for this opportunity your application must demonstrate you meet both the minimum ...

Showing results 41-60

Application Security Engineer information

See Seattle, WA salary details

$33

$75

$109

How much do application security engineer jobs pay per hour?

As of Aug 29, 2026, the average hourly pay for application security engineer in Seattle, WA is $75.57, according to ZipRecruiter salary data. Most workers in this role earn between $64.28 and $85.91 per hour, depending on experience, location, and employer.

What does an application security engineer do?

An application security engineer is responsible for ensuring the secure function of software application programs. For this career, you must have advanced training in cybersecurity and familiarity with multiple computer programming languages. Your main job duty is to evaluate lines of programming code to make sure a given application is safe from cyber-attack. You perform penetration testing to see if outside sources can "hack" into the application. You also do threat modeling and security code reviews of programming done by other application programmers.

What does an application security engineer do?

An Application Security Engineer is responsible for identifying and mitigating security vulnerabilities in software applications throughout their development lifecycle. They work closely with developers to ensure secure coding practices, conduct security assessments and code reviews, and implement tools for threat detection and prevention. Their primary goal is to protect applications from threats such as data breaches, unauthorized access, and other forms of cyber attacks. They also stay updated on the latest security trends and compliance requirements to keep applications safe.

What are the key skills and qualifications needed to thrive as an application security engineer, and why are they important?

To thrive as an Application Security Engineer, you need a solid background in software development, cybersecurity fundamentals, and vulnerability assessment, often supported by a degree in computer science or a related field. Familiarity with tools such as static and dynamic application security testing (SAST/DAST), penetration testing frameworks, and relevant certifications like CISSP or CEH is common. Attention to detail, problem-solving abilities, and strong communication skills help you effectively identify risks and collaborate with development teams. These skills are crucial for safeguarding applications against evolving threats and ensuring secure software delivery.

What are some common challenges faced by application security engineers when integrating security into the software development lifecycle?

Application Security Engineers often encounter challenges such as balancing security requirements with development speed, ensuring all team members understand secure coding practices, and keeping up with evolving threats. They frequently work closely with developers, DevOps, and QA teams to embed security controls without disrupting workflows. Overcoming these challenges requires strong communication skills, a deep understanding of both security and software development, and the ability to advocate for security as a shared responsibility across the organization.

What is the difference between Application Security Engineer vs Security Analyst?

AspectApplication Security EngineerSecurity Analyst
CertificationsCEH, CISSP, OSCPCISSP, Security+
Work EnvironmentDevelops security measures, reviews code, tests applicationsMonitors security systems, investigates incidents, analyzes threats
Industry UsageTech companies, software firms, organizations with strong app focusBroad sectors including finance, healthcare, government

Application Security Engineers focus on securing software applications through code review, vulnerability testing, and implementing security measures. Security Analysts monitor and analyze security threats, respond to incidents, and maintain security systems. While both roles require security certifications and work in security-focused environments, Application Security Engineers are more involved in the development and testing of secure applications, whereas Security Analysts focus on threat detection and incident response.

What are the most commonly searched types of Application Security Engineer jobs in Seattle, WA?

The most popular types of Application Security Engineer jobs in Seattle, WA are:

What are popular job titles related to Application Security Engineer jobs in Seattle, WA?

For Application Security Engineer jobs in Seattle, WA, the most frequently searched job titles are:

What job categories do people searching Application Security Engineer jobs in Seattle, WA look for?

The top searched job categories for Application Security Engineer jobs in Seattle, WA are:

What cities near Seattle, WA are hiring for Application Security Engineer jobs?

Cities near Seattle, WA with the most Application Security Engineer job openings:

Infographic showing various Application Security Engineer job openings in Seattle, WA as of August 2026, with employment types broken down into 58% Full Time, and 42% Contract. Highlights an 50% In-person, and 50% Hybrid job distribution, with an average salary of $157,180 per year, or $75.6 per hour.

Quality Engineer - Application Security - Costco Travel

Issaquah, WA


Costco IT
Retail • 10K+ employees

8.1

Company rating: 8.1 out of 10

Based on 1,926 frontline employees who took The Breakroom Quiz

2nd of 39 rated national retailers

People enjoy working here

Good employer

Recommended by students


Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 19 days ago


Job description

Costco Travel IT is responsible for the technical future of Costco Wholesale, the third largest retailer in the world with wholesale operations in fourteen countries. Despite our size and explosive international expansion, we continue to provide a family, employee centric atmosphere in which our employees thrive and succeed.

This is an environment unlike anything in the high-tech world and the secret of Costco's success is its culture. The value Costco puts on its employees is well documented in articles from a variety of publishers including Bloomberg and Forbes. Our employees and our members come FIRST. Costco is well known for its generosity and community service and has won many awards for its philanthropy. The company joins with its employees to take an active role in volunteering by sponsoring many opportunities to help others.

Come join the Costco Travel IT family. Costco IT is a dynamic, fast-paced environment, working through exciting transformation efforts. We are building the next generation retail environment where you will be surrounded by dedicated and highly professional employees.

Quality Engineers are core delivery team members responsible for the validation of functional and non-functional requirements implemented by a team. They are responsible for decomposing the functional and technical requirements created by Product Owners and Systems Analysts into test scripts. Quality Engineers raise defects as issues are identified and support the remediation process with teams.


The Application Security Engineer will work closely with stakeholders in Security, Engineering, Dev Ops, and other leaders within Costco Travel. The Engineer will be responsible for the overall security of our applications and services/APIs. This role has specific focuses on application security, vulnerability scanning, vulnerability scan outputs, and the tools and methodologies used.

This Engineer will identify gaps and inefficiencies within the vulnerability management program, and will work with the team to implement solutions. The Engineer will ensure security best practices are enforced. They will mentor team members and provide consultative services to teams and stakeholders to ensure the security of our applications.

If you want to be a part of one of the worldwide BEST companies "to work for", simply apply and let your career be reimagined.

ROLE


Serves as a subject matter expert for application security, vulnerability management, and vulnerability scanning.


Supports and consults with product and development teams in the area of application security.

Assesses applications for vulnerabilities in web UIs and APIs.

Provides manual application secure code reviews.

Works analytically to solve both tactical and strategic problems within the vulnerability management program.

Identifies attack surface reduction opportunities through vulnerability data analysis from enterprise custom and COTS applications.

Collaborates and communicates with Compliance, External auditors, and Business teams.

Understands compliance requirements that may impact security, and effectively collaborates with business areas and project teams to develop security solutions that address requirements.

Advocates for compliance and security measures, both internally and externally, to protect corporate applications and environments.

Maintains current knowledge of industry trends and standards; proactively pursues professional growth in the areas of technology, business knowledge, and Costco policies and platforms.

Regular and reliable workplace attendance at your assigned location.

REQUIRED


4+ years' experience in security in an enterprise environment.

2+ years' experience with software development with Java or any other Object-Oriented Language.

Knowledgeable in remediation activities at the code or script level, including fixing vulnerabilities or defects.

Demonstrated experience with Java programming, development practices, and common bug patterns.

Familiar with application vulnerability/security frameworks and standards such as OWASP Top 10, SANS Top 20, CVE,

CWE, CVSS, etc.

Experience with vulnerability management processes including scanning, reporting, and remediation planning.

Understanding of software development lifecycle and integrating application security into a CI/CD pipeline.

Experience with revision control systems and the agile process using ADO, Git, or similar agile code system functions (Pull, Fetch, Push, Sync).

Strong verbal and written communication skills.

Ability to clearly communicate Information Security matters to Executives, Auditors, End -Users, Analysts, Peers, and Engineers, using appropriate language, examples, and tone.

Experience identifying and validating security requirements for software.

Experience working with software development teams.

Realistic outlook that understands security problems as a balance of both security and business needs.

Demonstrated logical and structured approach to time management and task prioritization in support of team work goals.

Strong analytical skills, documentation skills, and awareness of change management; ability to adapt to changing priorities.

Strong collaborative mindset and able to function as a contributing member of the team.

Ability to handle highly confidential information in a strictly professional manner.

Recommended
2+ years' experience in working with DevOps engineer in an enterprise environment.

Experience with one or more scripting or development languages.

Experience coding, implementing custom software solutions, and supporting them in production environments.

General cloud knowledge.

Familiarity with agile continuous improvement methodologies.

Experience developing and reporting enterprise level metrics.

Proficient in Microsoft Workspace applications, including Outlook, Word, Excel, PowerPoint, and Teams.

Required Documents


Cover Letter


Resume


California applicants, please click here to review the Costco Applicant Privacy Notice.

Pay Ranges:

Level 2: $105,000 - $135,000

Level 3: $130,000 - $160,000

We offer a comprehensive package of benefits including paid time off, health benefits - medical/dental/vision/hearing aid/pharmacy/behavioral health/employee assistance, health care reimbursement account, dependent care assistance plan, short-term disability and long-term disability insurance, AD&D insurance, life insurance, 401(k), stock purchase plan to eligible employees. Costco is committed to a diverse and inclusive workplace. Costco is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or any other legally protected status. If you need assistance and/or a reasonable accommodation due to a disability during the application or the recruiting process, please send a request to IT-Recruiting@costco.com

If hired, you will be required to provide proof of authorization to work in the United States. In some cases, applicants and employees for selected positions will not be sponsored for work authorization, including, but not limited to H1-B visas.

Employment Type: Full-Time

Costco logo

About Costco

Sourced by ZipRecruiter

Costco is a membership warehouse club, dedicated to bringing our members the best possible prices on quality brand-name merchandise. With more than 800 locations worldwide, Costco provides a wide selection of merchandise, plus the convenience of specialty departments and exclusive member services, all designed to make your shopping experience a pleasurable one. Today, as the company evolves, it stays true to the qualities that helped attract and retain millions of loyal members around the globe: Commitment to quality. Costco warehouses carry about 4,000 SKUs (stock keeping units) compared to the 30,000 found at most supermarkets. By carefully choosing products based on quality, price, brand, and features, the company can offer the best value to members.

Industry

Retail

Company size

10,000+ Employees

Headquarters location

Issaquah, WA, US

Year founded

1983


What Costco employees say

Pay

Benefits

Hours and flexibility

Workplace

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