CCAIRHow to become an Application Security Engineer
Application security (AppSec) engineers help developers write safe code. They review designs and code, run security tests and fix or explain the weaknesses they find.
- First job?
- Usually a second jobMost move in after time as a software developer.
- Coding
- Regular programming
- Start with
- A portfolio of code and write-ups matters more than certificates here
- Median US pay
- $135,980BLS May 2025, Software Developers
What the job is like
The builder-defender: you make sure software is safe before it ships. A typical week might include:
- Review a new feature's code for mistakes attackers could use
- Set up automated security checks that run on every code change
- Teach developers how to avoid a common mistake
How to get in
Most move in after time as a software developer.
- Learn one programming language well and build something real.
- Study the OWASP Top 10, the most common web app weaknesses.
- Practise finding bugs in deliberately broken apps.
Certifications
Start with
- A portfolio of code and write-ups matters more than certificates here
Later, with experience
- ISC2 CSSLP
Free places to practise and learn
Habits that help in every cyber role
- Build a small home lab (an old laptop or free virtual machines is enough) and write up what you try.
- Do beginner capture-the-flag challenges and keep a simple public portfolio of what you learned.
- Go to a local ISSA, ISACA, OWASP or BSides meeting. Most are free for students, and many jobs come from people you meet there.
Questions about this role
Can I get an Application Security Engineer job straight out of school?
Usually not. Most move in after time as a software developer.
Do I need to know how to code to become an Application Security Engineer?
Yes. Programming is a regular part of this job.
What certification should I get first to become an Application Security Engineer?
Good starting points: A portfolio of code and write-ups matters more than certificates here. Later, with experience: ISC2 CSSLP.
How much does an Application Security Engineer make?
The US Bureau of Labor Statistics reports a median of $135,980 a year (May 2025) for Software Developers, the closest official category. Starting pay is usually lower and varies by city and employer.
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NICE work roles: Secure Software Development; Software Security Assessment. Pay: BLS Occupational Outlook Handbook, May 2025. Reviewed 2026-10-17 by Dr. Benjamin M. Ampel, Director of CCAIR.