2025 median annual pay
$129,180
Median for the whole occupation, across all experience levels. It is not specific to a level or to Brazil.
Career in 2026 and 2027
Application Security Engineer
An Application Security Engineer finds and removes vulnerabilities in software before attackers do, working inside the development lifecycle rather than after it. The role combines secure coding, testing tools, threat modeling and a steady working relationship with developers.
Content reviewed on October 20, 2026
- Levels
- 2
- Skills mapped at Senior
- 9
What each level must prove
Senior
Sets the security direction for how teams build, review and test software, and is accountable for risk across many services at once.
The work moves from finding bugs yourself to making teams find them: leading design reviews, doing deep code reviews on the riskiest changes, and running programs such as champions and disclosure. What changes from mid-level is scale, since your judgment now shapes what dozens of developers do by default.
Average score required: 71%
Secure Code Review Practices
Why: Lets you review a risky change line by line, spot an authorization gap that tools miss, and leave guidance the author applies to the next change too.
STRIDE / PASTA Frameworks
Why: Lets you lead threat modeling for a whole platform or a cross-team redesign and rank threats by business risk, so limited fixing capacity goes to the ones that matter.
Attack Surface Analysis
Why: Lets you track how the surface grows across many services and teams, and push for retiring exposed interfaces before an acquisition or new integration widens it.
API Security (Rate Limiting, AuthZ)
Why: Lets you define authorization and rate-limiting standards at the gateway level so every new API inherits them, rather than reviewing each endpoint after the fact.
Container Application Security
Why: Lets you set the cluster-wide baseline, such as admission policies and runtime detection, so an insecure image cannot reach production regardless of which team built it.
Penetration Testing Basics
Why: Lets you scope and direct a penetration test around the highest-risk release, judge the quality of an external tester's report, and turn it into a prioritized fix plan.
Fuzzing & Edge Case Testing
Why: Lets you set up continuous fuzzing on a parser or protocol handler and find crashes and edge cases that scripted tests and scanners never reach.
Security Champions Program
Why: Lets you scale security beyond your own headcount by training one advocate per team, so questions get answered inside the squad instead of queuing at the security team.
Vulnerability Disclosure Program
Why: Lets you run a disclosure or bug bounty program: triage an outside researcher's report, agree a fix timeline, and coordinate the public disclosure without legal surprises.
Study for Application Security Engineer: trails and practice exams
Each level of this career maps to a study trail. Read the full topic map for free, then measure your level.
Market snapshot (United States)
Projected job growth, 2025–2035
+21%
Much faster than average
Closest US occupation: Information Security Analysts. US Bureau of Labor Statistics, Occupational Outlook Handbook, updated August 27, 2026
Two ways to move up one level
12 weeks · intensive
For whoever has a deadline
About 8 hours a week, in 1 cycle focused on the gaps that weigh most.
40 weeks · regular
Alongside work
About 4 hours a week, in 3 cycles. Each cycle carries what was left from the previous one.
Frequently asked questions
What is Application Security Engineer?
An Application Security Engineer finds and removes vulnerabilities in software before attackers do, working inside the development lifecycle rather than after it. The role combines secure coding, testing tools, threat modeling and a steady working relationship with developers.
What must each level of Application Security Engineer prove?
Application Security Engineer is mapped in 2 levels: Mid-level and Senior. Open each level above to see the skills it must prove.
How long does the Application Security Engineer plan take?
The plan has 2 paces: 12 weeks per level at about 8 hours a week (intensive) and 40 weeks per level at about 4 hours a week (regular).
How the plan works
AI tutor
A study session on each new topic, at your level.
AI school
Hands-on lessons on using AI in your career's daily work.
Assessments
Each requirement is proven by measurement, not by a checkbox.
Stage review
At the end of each cycle you see what moved and what carries over.
Find out which level you are at
A short diagnostic measures the skills you already have. The journey starts from there.