Application developer serp_jobs.h1.location_city

Job Title : Application Security Tester (Mid-Level)

Employment Type : Full-Time

Location : Onsite – Washington, DC

Work Authorization : Must be authorized to work in the U.S. (no sponsorship available)

Overview

We are seeking a mid-level Application Security Tester. The ideal candidate will have strong communication skills, a passion for innovation, and the ability to solve complex problems in a collaborative environment. This role involves hands-on security testing of web and mobile applications, including code reviews and validation of security controls.

Key Responsibilities

• Perform security assessments on web and mobile applications, including penetration testing and vulnerability analysis.

Conduct source code reviews and provide actionable security recommendations.

Utilize static and dynamic analysis tools to identify and remediate vulnerabilities.

Integrate security testing into CI / CD pipelines and development workflows.

Validate security controls for applications and backend services.

Document and communicate findings to technical and non-technical stakeholders.

Stay current with emerging threats and testing methodologies.

Contribute to internal tooling and process improvements.

Required Qualifications

Strong understanding of application, network, and system security principles.

Proficiency with Windows and Linux environments.

Familiarity with programming languages such as Python, Java, C#, or similar.

Hands-on experience with tools like Burp Suite, OWASP ZAP, and other SAST / DAST / SCA platforms.

Preferred Qualifications

Experience with mobile app security testing and reverse engineering.

Knowledge of container and cloud security (Docker, Kubernetes, AWS, Azure).

Industry certifications such as OSCP, GWAPT, GPEN, or similar.

Contributions to the security community (e.g., open-source, research, bug bounties).

Experience with API security testing and automation.

Vaco by Highspring values a diverse workplace and strongly encourages women, people of color, LGBTQ+ individuals, people with disabilities, members of ethnic minorities, foreign-born residents, and veterans to apply.

EEO Notice

Vaco by Highspring is an Equal Opportunity Employer and does not discriminate against any employee or applicant for employment because of race (including but not limited to traits historically associated with race such as hair texture and hair style), color, sex (includes pregnancy or related conditions), religion or creed, national origin, citizenship, age, disability, status as a veteran, union membership, ethnicity, gender, gender identity, gender expression, sexual orientation, marital status, political affiliation, or any other protected characteristics as required by federal, state or local law.

Vaco by Highspring and its parents, affiliates, and subsidiaries are committed to the full inclusion of all qualified individuals. As part of this commitment, Vaco by Highspring and its parents, affiliates, and subsidiaries will ensure that persons with disabilities are provided reasonable accommodations. If reasonable accommodation is needed to participate in the job application or interview process, to perform essential job functions, and / or to receive other benefits and privileges of employment, please contact HR@vaco.com .

Vaco by Highspring also wants all applicants to know their rights that workplace discrimination is illegal .

By submitting to this position, you agree that you will be giving Vaco by Highspring the exclusive right to present your as a candidate for the foregoing employment opportunity. You further agree that you have represented information about yourself accurately and have not affirmatively misrepresented your qualifications. You also agree to maintain as confidential, to the fullest extent permitted by law, any information you learn from Vaco by Highspring about the position and you will limit disclosure of information about the position only to the extent necessary to perform any obligations in furtherance of your application. In exchange, Vaco by Highspring agrees to exercise reasonable efforts to represent you through all solicitation, job screening and resume dispersal.

Privacy Notice

Vaco by Highspring and its parents, affiliates, and subsidiaries (“we,” “our,” or “Vaco by Highspring”) respects your privacy and are committed to providing transparent notice of our policies.

California residents may access Vaco by Highspring HR Notice at Collection for California Applicants and Employees here .

Pay Transparency Notice

Determining compensation for this role (and others) at Vaco by Highspring depends upon a wide array of factors including but not limited to :

With that said, as required by local law, Vaco by Highspring believes that the following salary range referenced above reasonably estimates the base compensation for an individual hired into this position in geographies that require salary range disclosure. The individual may also be eligible for discretionary bonuses.