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Application Security Tester Jobs in Missouri (NOW HIRING)

Stifel

AI-Application Security Engineer

Saint Louis, MO

$57 - $76.25/hr

The role requires strong hands-on technical depth in secure software development, application security testing, vulnerability management, and emerging AI security risks, including prompt injection ...

Stifel

AI-Application Security Engineer

Saint Louis, MO · On-site

$57 - $76.25/hr

The role requires strong hands-on technical depth in secure software development, application security testing, vulnerability management, and emerging AI security risks, including prompt injection ...

Stifel

AI-Application Security Engineer

Saint Louis, MO

$57 - $76.25/hr

The role requires strong hands-on technical depth in secure software development, application security testing, vulnerability management, and emerging AI security risks, including prompt injection ...

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All JobsApplication Security Tester JobsApplication Security Tester Jobs in Missouri

Application Security Tester information

See Missouri salary details

$4

$34

$89

How much do application security tester jobs pay per hour?

As of Sep 10, 2026, the average hourly pay for application security tester in Missouri is $34.64, according to ZipRecruiter salary data. Most workers in this role earn between $22.98 and $45.10 per hour, depending on experience, location, and employer.

What is the difference between Application Security Tester vs Penetration Tester?

AspectApplication Security TesterPenetration Tester
CertificationsCertified Ethical Hacker (CEH), OSCP, CISSPCEH, OSCP, GPEN
Work EnvironmentFocuses on securing applications during development and testing phasesPerforms simulated attacks on systems to identify vulnerabilities
Industry UsageUsed in software development, cybersecurity teams, and QA departmentsUsed in cybersecurity consulting, offensive security teams, and pen testing firms

While both roles involve cybersecurity skills and certifications, Application Security Testers primarily focus on identifying and fixing security issues within applications during development. Penetration Testers conduct simulated attacks on systems to find vulnerabilities. The roles often overlap but differ in scope and focus, with Application Security Testers working more on secure coding practices and Penetration Testers on offensive security testing.

What cities in Missouri are hiring for Application Security Tester jobs?

Cities in Missouri with the most Application Security Tester job openings:

Infographic showing various Application Security Tester job openings in Missouri as of August 2026, with employment types broken down into 81% Full Time, 15% Part Time, and 4% Contract. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution, with an average salary of $72,053 per year, or $34.6 per hour.

Jnr. Penetration Tester - Cloud, Mobile & Web Application

California, MO • On-site

Tiro Security, LLC
1 - 10 employees
Learn more about Tiro Security, LLCexternal

$80K - $132K/yr

Other

Posted 22 days ago

Job description

Job Reference: 6061

Our Client seeks a Jnr. Cloud, Mobile and Web Application Penetration Tester in Orange County, CA.

This is an onsite position (hybrid is possible) for US Citizens and Green Card holders. If you need visa sponsorship now or in the future, you are not eligible for the position.

The Client is open to people who will permanently relocate to the area.

This is a unique opportunity to join a well-established, rapidly expanding firm with great promotion opportunities.

The ideal person will have:

1-3 years of working as an application penetration tester in a commercial environment.

You will have experience of:

Performing application security assessments using penetration testing, threat modeling, and code review techniques.

Conduct API security testing and evaluate authentication & authorization mechanisms.

Collaborate with development teams to integrate security into the SDLC.
Work with cloud security testing methodologies and ensure compliance with security standards.

Salary dependent on experience: $80K to $132K.

Tiro Security is a specialist in Cyber Security staffing and professional services company. Formed in 2012, headquartered on the West Coast and helping clients all over the USA, Cyber Security is ALL we do. Tiro Security is extremely active in the cybersecurity industry and regularly speaks as experts on staffing, careers, and retaining talent at major conferences including DEFCON, ISC2 Congress, ShellCon, BSides, and RSA

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