Skills you need to be a application security engineer
9 skills a hiring manager would actually test for, each with the level this role expects and what it is used for. Not a syllabus — the shape of the job.
Build my path to this roleUpskili checks what you can already do, then sequences only what is missing. No account needed.
What the role requires
Ordered by how much the job depends on it. The bar is the proficiency expected of a competent application security engineer — not mastery, and not a passing acquaintance.
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SAST/DAST tools
Essential
Integrates and tunes static and dynamic scanners in CI/CD pipelines.
Strong -
Threat modeling
Essential
Leads STRIDE-based reviews for new features and architecture changes.
Strong -
Secure code review
Essential
Manually audits critical code paths for vulnerabilities beyond automated tools.
Strong -
OWASP Top 10
Essential
Explains and demonstrates common web vulnerabilities to development teams.
Deep -
Python
Important
Automates security testing and builds internal tooling for the team.
Strong -
Docker
Important
Hardens container images and reviews Dockerfiles for misconfigurations.
Working -
Cloud security (AWS)
Important
Reviews IAM policies, S3 buckets, and security groups for misconfigurations.
Strong -
Burp Suite
Useful
Performs manual penetration testing of web applications and APIs.
Strong -
CI/CD pipeline security
Useful
Embeds security gates into Jenkins or GitHub Actions workflows.
Working
An order worth learning it in
A list of ten skills is the same unhelpful answer a catalogue gives, just sorted. This is where to actually start.
Start here
Essential to the role, and reachable from a standing start. Everything below rests on these.
- Threat modeling
- Python
- Docker
- Cloud security (AWS)
Then this
The rest of what the role is assessed on. Harder, and it builds on the foundation above.
- SAST/DAST tools
- Secure code review
- OWASP Top 10
What sets you apart
Not what gets you hired, but what separates doing the job from being trusted with it.
- Burp Suite
- CI/CD pipeline security
You almost certainly have some of this already.
That is the point of starting from the role rather than a course. Upskili checks what you can do, then builds a path across only the gap.
See my path to application security engineer