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About the Role
We are seeking an Application Security Developer to join our enterprise cybersecurity and engineering organization in Sydney. This is a developer-first AppSec role designed for a hands-on practitioner who blends a software engineering background with expertise in application security principles, API security, and secure coding standards. You will ensure that applications, microservices, and AI integrations are built securely by design throughout the software development lifecycle (SDLC).
Responsibilities
- Review code, diagnose vulnerabilities (OWASP Top 10, CWE, OWASP Top 10 for LLMs), and provide developer-level code remediation guidance in modern languages (e.g., Python, Java, Go, Node.js/TypeScript).
- Design, build, and extend secure application components, authentication/authorization modules, and API security controls—aligning with enterprise identity platforms (Ping Identity, Entra ID) using OAuth 2.0, OIDC, and JWT validation.
- Integrate and fine-tune static (SAST), dynamic (DAST), and dependency (SCA) code scanning tools into modern CI/CD pipelines (GitHub Actions, GitLab CI, Azure DevOps).
- Conduct threat modeling assessments during feature design phases and perform targeted manual secure code reviews for high-risk application components, external endpoints, and API gateways.
- Partner with enterprise Vulnerability Management teams to triage application security findings (e.g., Tenable WAS, DAST results), validate exploitable flaws, and guide squads on effective remediation strategies.
- Create reusable security libraries, establish secure coding baselines, and empower software engineering teams to adopt "shift-left" security practices without slowing down delivery velocity.
Requirements
- Proven track record as a Software Developer or Application Security Developer writing clean, production-ready code in modern development stacks (e.g., Python, Java, Go, JavaScript/TypeScript).
- Deep technical understanding of web/API security, OWASP vulnerabilities, cryptography, and secure authentication/authorization protocols (OAuth 2.0, OIDC, SAML).
- Practical experience configuring, tuning, and embedding SAST, SCA, and DAST tooling (e.g., Snyk, Checkmarx, SonarQube, Veracode, OWASP ZAP) into automated CI/CD workflows.
- Practical capability in conducting threat modeling (e.g., STRIDE) and converting security risks into clear engineering user stories and backlog items.
- Exposure to secure AI/LLM integration patterns, prompt security guardrails, or model risk controls.
- Experience interfacing with enterprise identity platforms (e.g., Ping Identity, Entra ID) or enterprise vulnerability management platforms (Tenable).
- Applicants will need valid Australian work rights and may be required to undergo relevant background, probity and police checks.
Skills
- Python
- Java
- Go
- Node.js
- TypeScript
- OWASP Top 10
- CWE
- OWASP Top 10 for LLMs
- API Security
- OAuth 2.0
- OIDC
- JWT
- SAST
- DAST
- SCA
- GitHub Actions
- GitLab CI
- Azure DevOps
- Threat Modeling
- STRIDE
- Ping Identity
- Entra ID
- Tenable WAS
- Snyk
- Checkmarx
- SonarQube
- Veracode
- OWASP ZAP
- CSSLP
- GWAPT
- GWEB
- OSCP
- CASE
Location
- Sydney
Work Type
- Hybrid
Experience Level
- Software Engineering Background
- Application & API Security Mastery
- Pipeline Security & Code Scanning
- Threat Modeling
Education Level
- Relevant industry certifications (CSSLP, GWAPT, GWEB, OSCP, or CASE)
About the Company
- At NCS Australia, we believe in doing technology services better. Our commitment to quality, focus on people, and willingness to challenge traditional thinking set us apart.
- Our team brings this belief to life by partnering with our clients and communities to make tomorrow together.
- We are committed to creating an environment that prioritises innovation, collaboration, and purposeful work.
- Our diverse team is empowered to make a meaningful impact with curiosity, creativity and resilience to shape better outcomes.
- Join us and accept the challenge of creating a better tomorrow.
- This is a place for people who like to get stuck in, bring ideas to life and make things happen.
- You'll work alongside experienced people who care about what they do, contribute to meaningful work and have the support to keep learning and grow your career.
- Whether you want to deepen your expertise, explore something new or take your career in a different direction, there's room to make it your own.
- We value Adventure, Excellence, Integrity, Ownership and Unity - bringing curiosity, collaboration and accountability to the way we work with our clients and each other.
- Ready to make extraordinary happen?
- We'd love to hear from you.
Equal Opportunity
- We celebrate diversity and inclusion
- We value different perspectives, experiences and strengths our people bring.
- We're committed to an inclusive workplace where everyone has the opportunity to contribute, grow and succeed, and to providing equal employment opportunities and reasonable adjustments throughout the recruitment process.