Cybersecurity Engineer (Application Security focus)

Delta Defense LLC•West Bend, WI

4d•$100,000 - $125,000•Hybrid

About The Position

Delta Defense, powering the USCCA, is seeking a Cybersecurity Engineer with an Application Security focus. This role is crucial for protecting the trust, data, products, and platforms of the nation's largest self-defense membership organization. The Information Security team is responsible for securing the perimeter, guarding critical assets, and building resilience. The Cybersecurity Engineer will help build and advance a modern security engineering program across product engineering, cloud infrastructure, and analytics teams, emphasizing a proactive and collaborative approach ('JUDO over SUMO') that enables Delta Defense to move faster with confidence. The work will be visible, impactful, and directly contribute to member safety.

Requirements

Deep cybersecurity engineering capability across application security, cloud and infrastructure security, data platform security, detection engineering, and vulnerability management.
Practical experience securing modern cloud-first environments and large-scale SaaS and data platforms.
Hands-on application security experience with SAST, DAST, SCA, secure code review, API security, WAF tuning, threat modeling, CI/CD security, and secrets management using tools such as Doppler, Semgrep, Snyk, Burp Suite, OWASP ZAP, Cloudflare, HashiCorp Vault, or equivalent.
Proficient in at least one programming or scripting language with the ability to read, write, and exploit code in a security context; Python, JavaScript, PHP, Golang, or Rust preferred.
Working knowledge of AI security risks and controls, including prompt injection, indirect prompt injection, model abuse, data leakage, agentic workflow vulnerabilities, OWASP LLM Top 10, MITRE ATLAS, and emerging AI security tooling.
Practical cloud and infrastructure security experience across DigitalOcean, AWS, GCP, Kubernetes, IAM, CSPM, IaC scanning, container security, zero-trust/SASE architectures, and security tooling such as EDR, SIEM, CASB, SWG, DLP, IDS/IPS, and PAM.
Communicates risk clearly in business terms, influences cross-functional stakeholders without direct authority, stays composed and decisive during active incidents, drives remediation to closure, and demonstrates the Core Values of Delta Defense, LLC.
Bachelor's degree in Computer Science, Information Security, Cybersecurity, Information Technology, or a related field preferred; equivalent work experience and relevant certifications may be considered in lieu of a degree.
Minimum 3 years of cybersecurity engineering experience working closely with application, software, data engineering, DevOps, cloud, infrastructure, or security operations teams.
Experience securing applications, APIs, cloud platforms, CI/CD pipelines, Kubernetes environments, data platforms, and modern engineering ecosystems using technologies such as JavaScript, PHP, PostgreSQL, Kafka, NeonDB, GitLab, Python, Snowflake, dbt, Fivetran, Databricks, Tableau, Informatica, Kestra, or related technologies.
Strong understanding of security frameworks and control models, including NIST CSF, CIS Controls, PCI DSS, Cyber Defense Matrix, ISO 27001, OWASP, and MITRE ATT&CK.
Applicants must be authorized to work in the United States without the need for current or future sponsorship.

Nice To Haves

Preferred certifications include CCSP, CASP+, Security+, CEH, GPEN, GWAPT, or other relevant cloud, application security, AI security, offensive security, or security engineering certifications.

Responsibilities

Lead application security across the software development lifecycle by partnering with Engineering and DevOps to integrate security into design, development, testing, and deployment.
Perform threat modeling, secure design reviews, code reviews, and implement automated SAST, DAST, SCA, and secrets detection within CI/CD pipelines.
Design, implement, and continuously improve web application and API security controls across the enterprise.
Develop and tune WAF policies, conduct API security assessments, identify business logic vulnerabilities, and establish secure-by-design standards.
Plan and execute penetration testing activities against web applications, APIs, cloud environments, and supporting infrastructure.
Validate vulnerabilities through manual testing, prioritize findings based on business risk, and partner with engineering teams for remediation.
Develop and enforce security controls governing enterprise AI platforms and internally developed AI capabilities.
Establish policies for data classification, model usage, access controls, audit logging, and secure integration of AI technologies.
Perform security assessments of Retrieval-Augmented Generation (RAG), agentic AI systems, MCP integrations, and large language model applications.
Identify and mitigate AI-related risks including prompt injection, indirect prompt injection, insecure tool use, excessive agent permissions, model abuse, and data leakage.
Contribute to technical investigation and response activities for security incidents, including threat analysis, digital forensics, containment, eradication, and root cause analysis.
Operate a risk-based vulnerability management program that prioritizes remediation based on exploitability, business impact, and threat intelligence.
Measure remediation effectiveness, track risk reduction, and ensure security controls align with frameworks including NIST CSF, CIS Controls, OWASP, PCI DSS, and organizational security standards.
Contribute to maintenance of secure cloud environments across AWS, Google Cloud, and DigitalOcean.
Design and implement cloud security architecture including IAM, Kubernetes security, container security, Infrastructure-as-Code security scanning, secrets management, workload protection, and Zero Trust network controls.
Design and build security automation that improves operational efficiency and security outcomes using scripting, APIs, Infrastructure as Code, and AI-assisted workflows.
Develop integrations between security platforms, automate repetitive security processes, and leverage AI responsibly to enhance detection, investigation, and response.
Serve as a trusted technical advisor across Engineering, Infrastructure, and Product teams by providing security guidance, mentoring engineers, evaluating emerging technologies, and translating complex security risks into practical engineering solutions.
Continuously research evolving threats, techniques, and defensive capabilities to improve the organization’s overall security posture.