Web Application Penetration Tester

Do you want to apply your application testing skills where they’ll truly make a difference? Zelvin Security is trusted to identify and expose real-world risks in critical applications and systems through hands-on, dynamic application penetration testing. Join us in doing work that matters -- accurate, tailored, and built on technical depth.

The Opportunity:

Zelvin Security is hiring an Application Penetration Tester to join our growing team of Professional Ethical Hackers in Knoxville, TN. In this role, you will be responsible for hands-on application testing, including dynamic web applications, APIs, and mobile platforms.

You will work closely with Ethical Hacking team members at all levels to plan, execute, and validate tests. Your work will also involve verifying remediation efforts and developing practical, custom mitigation strategies for clients.

In addition to project-based testing, you’ll have opportunities to contribute to internal tooling, process improvements, documentation, and research. Whether leading an engagement or collaborating with peers, your input will help shape how Zelvin Security continues to deliver high-quality, client-focused results.

This is a full-time, onsite role based in Knoxville, TN (Income Tax Free State).

Who you are:

Bachelor’s degree in computer science, Information Technology, Forensics, Cybersecurity preferred. A similar field or equivalent experience will be considered.

Strong understanding of application architecture, supporting infrastructure (network and cloud), common protocols and services, the OSI model, SDLC processes, and core cybersecurity vulnerabilities and technologies.

Programming experience preferred, with knowledge of common web frameworks and languages such as JavaScript, Python, Java, or .NET considered a plus.

Understanding of application security frameworks and methodologies such as OWASP Top 10, ASVS, NIST SP 800-115, and MITRE ATT&CK.

Ability to provide practical remediation guidance using secure development techniques and resources like the OWASP Cheat Sheets.

Proficiency with ethical hacking tools and application penetration assessment platforms, with the ability to adapt to client-specific environments and technologies.

Experience writing clear, actionable reports and presenting findings to both technical teams and executive stakeholders.

How you stand out:

Excellent application security testing skills, of course

Critical thinking and problem-solving skills

Excellent communication and customer service skills

Excellent writing skills, especially technical writing skills

Produce detail-oriented and accurate work with documentation

Possess a commitment to professionalism and professional development

Strong integrity and respect for confidentiality

Ability to manage and prioritize multiple assignments independently

What we offer:

We are looking forward to hearing from you! The best candidate will have an opportunity to join the elite Zelvin Security team receiving benefits and policies such as:

Unlimited time off

Continuing education credits

Work-from-home Summer Fridays

A competitive salary based on experience and skills

Medical, dental and vision insurance

401(k) with company match

This position is located onsite at 12748 Kingston Pike, Knoxville, TN 37934.

A background check, drug screening, and E-Verify are required. Zelvin Security is an equal opportunity employer

Applicants must be authorized to work in the United States; Zelvin Security does not sponsor work visas for this position