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Technology & Engineering

Junior Application Security Engineer Resume Example

Professional Junior Application Security Engineer resume example. Get hired faster with our ATS-optimized template.

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Why This Resume Works

Strong verbs open every bullet

Triaged, Authored, Investigated, Built, Shadowed. Each bullet leads with action that proves you drove the work, not waited for findings to arrive in your queue.

Numbers turn AppSec work into evidence

1,200+ SAST findings, true-positive rate from 0.42 to 0.78, 22 custom Semgrep rules, 156 vulnerable packages, 230+ misconfigurations. Without metrics, code review reads like a chore log.

Context turns scan output into security outcomes

Not 'ran scans' but 'with severity-based JIRA routing'. Not 'reviewed code' but 'across 48 production repos'. Context proves you understood the systems you were defending.

Collaboration signals even at entry level

Adopted by 3 product teams, shadowed senior product-security engineer, threat models for 4 new microservices. Junior AppSec is embedded work, your CV must show people you worked with.

Tools shown in achievements, not listed in a stack

'Built nightly Trivy and Snyk container scans' beats 'Trivy, Snyk'. Tools live inside what you shipped, proving you used them in anger, not skimmed a tutorial.

Switch between levels for specific recommendations

Key Skills

  • Semgrep
  • CodeQL
  • Snyk
  • Dependabot
  • Trivy
  • OSV-Scanner
  • Burp Suite Pro
  • OWASP Top 10
  • OWASP ASVS
  • NIST SSDF
  • SLSA
  • Python
  • Go
  • TypeScript
  • Bash
  • Docker
  • Kubernetes
  • GitHub Actions
  • Caido
  • HackerOne
  • Veracode
  • Checkmarx
  • OWASP ZAP
  • Threat Modeling (STRIDE)
  • ISO 27001
  • SOC 2
  • Rust
  • AWS
  • GCP
  • Terraform
  • HashiCorp Vault
  • Sigstore
  • Cosign
  • Apiiro
  • OX Security
  • Endor Labs
  • SLSA Level 3
  • Threat Modeling
  • Secure SDLC
  • FedRAMP
  • in-toto
  • Nuclei
  • Vendor Evaluation
  • Detection Engineering
  • AppSec Program Design
  • Vendor Negotiation
  • Budget Planning
  • Board Reporting
  • Risk Quantification
  • PCI DSS
  • Bugcrowd

Level Up Your Resume

Salary Ranges (US)

Junior
$130,000 - $180,000
Middle
$175,000 - $240,000
Senior
$240,000 - $340,000
Lead
$300,000 - $500,000

Career Progression

Application Security careers progress from triage and rule-writing into program ownership and org-wide strategy. The fastest growth path is to specialize in one of: threat modeling, SAST/CodeQL detection engineering, supply-chain provenance, or ASPM strategy. Compensation accelerates sharply at senior+ because vendor decisions and program ownership compound across product orgs. Lead AppSec at top-tier companies enters CISO-track territory, with some lateral moves into Head of Product Security or VP Engineering Security.

  1. JuniorMiddle2-3 years

    Ship one open-source Semgrep ruleset with measurable adoption, own end-to-end vulnerability disclosure intake on HackerOne, complete one full embedded engagement with a product team longer than 3 months, and earn OSCP or GWAPT.

    • Threat modeling (STRIDE)
    • Custom Semgrep rule authoring
    • Burp Suite Pro and Caido fluency
    • Container and IaC security (Trivy, Checkov)
    • Vulnerability disclosure operations
  2. MiddleSenior2-3 years

    Drive one vendor swap with a documented dollar reclaim, own a threat-modeling rotation across 5+ services, mentor 1-2 SDEs into AppSec rotation, ship pre-prod gating that closed pre-release a measurable share of high-severity findings, and earn OSWE or AWS Security Specialty.

    • ASPM tooling (Apiiro, OX Security, Endor Labs)
    • CodeQL custom queries
    • Supply-chain provenance (Sigstore, Cosign)
    • Detection engineering at scale
    • Cross-team program ownership
  3. SeniorLead3-5 years

    Own AppSec across 5+ product orgs with measurable coverage delta, drive a multi-million-dollar vendor consolidation, scale a security-champions program past 50% of teams, deliver quarterly readouts to CTO or audit committee, and ship supply-chain provenance org-wide on SLSA Level 3.

    • AppSec program design and budgeting
    • Vendor negotiation and procurement
    • Board and audit-committee communication
    • Bug-bounty program economics
    • Founding and hiring an AppSec org

AppSec engineers can pivot into red team or offensive security research, security platform engineering (building internal AppSec tooling), founder/early-engineer roles at AppSec startups (Semgrep, Endor Labs, OX Security), security product management, or DevSecOps platform leadership. The CISO track typically routes through lead AppSec into Head of Product Security and onward.

Application Security Engineer CV: How to Get Hired Inside Product Engineering, Not Next to It

Application Security is the role hiring managers say they want to fill but rarely do well. AppSec is not IT security. It is not a SOC analyst rotation. It is not GRC writing policies. It is an engineering role embedded with product teams, owning threat models, SAST and SCA pipelines, supply-chain provenance, and the secure-SDLC. Recruiters at Stripe, Cloudflare, GitHub, Datadog, Atlassian, and Coinbase scan your CV for one signal: do you read code and ship guardrails, or do you forward findings and call it a program.

The brutal truth is that most AppSec resumes get filtered for the same reason. They list 'reviewed code for security' instead of 'shipped a Semgrep gate with autofix in 47 repos'. They name CISSP at the top of page one and mention Burp Suite once. They claim 'reduced vulnerabilities' without an SLA-violation number. The hiring loop wants to see signal-to-noise, not certification stacks.

This guide breaks down what works at each AppSec level: junior triaging SAST findings and writing Semgrep rules, mid-level embedding with one product org and running threat models, senior owning the program across 5+ orgs and making ASPM vendor decisions, lead setting org-wide strategy and presenting risk to the audit committee. Every example is built from real tools (Semgrep, CodeQL, Snyk, Veracode, Checkmarx, Trivy, OSV-Scanner, Sigstore, Cosign, Apiiro, OX Security, Endor Labs, HackerOne, Bugcrowd) and real metrics (true-positive rate, MTTR, threat-model coverage, payout-per-critical) that hiring managers actually pattern-match on.

Frequently Asked Questions

An AppSec engineer is embedded with product engineering teams and owns threat models, SAST/DAST/SCA programs, secure-SDLC adoption, security-champions networks, vulnerability disclosure intake, and supply-chain provenance. They write Semgrep and CodeQL rules, run tabletop exercises, and gate releases on findings. AppSec is engineering work, not policy work, and not SOC analyst work.

SOC analysts watch alerts from production telemetry. IT security secures corporate IT (laptops, identity, network). GRC writes policies and runs audits. AppSec is none of these. AppSec sits inside product engineering, reads pull requests, writes detection-as-code, and ships pre-prod gates. The day-to-day stack is Semgrep, CodeQL, Burp Suite Pro, Caido, Sigstore, and Apiiro, not SIEM dashboards or policy documents.

OSCP and OSWE (Offensive Security) signal hands-on attacker depth. GIAC GWAPT signals web app penetration testing maturity. AWS Certified Security and CCSP are useful at mid-to-senior cloud-AppSec roles. CISSP becomes relevant at senior+ levels for management visibility, never as a junior signal. CompTIA Security+ is acceptable as a baseline. CISSP, CISM, CRISC stacked at junior level actually reduces AppSec callback rates because it pattern-matches with GRC candidates.

SAST true-positive rate (0.42 → 0.78 is concrete), MTTR for sev-1 and sev-2 findings, threat-model coverage on new services as a percentage, security-champions adoption as a percentage of teams, bug-bounty payout efficiency (payout-per-critical and time-to-triage), pre-prod findings closed pre-release rate, and supply-chain artifact provenance coverage. CVs without at least three of these metrics get filtered before the recruiter screen.

Yes, both. A public Semgrep ruleset with measurable adoption (stars, contributors, downstream usage) is the single highest-leverage signal at junior and mid-level. HackerOne or Bugcrowd reports with payout amounts and CVE IDs prove attacker-side reading. Both are explicitly searched for during sourcing at Stripe, Cloudflare, GitHub, Datadog, Atlassian, and Coinbase.

Lead with applied projects framed as professional experience. A public Semgrep ruleset with 240+ stars, 4 HackerOne medium-severity reports for $2,400 in payouts, and a documented home-lab Trivy/Snyk pipeline are credible. Frame the section as 'Application Security Projects (2023-Present)' and describe each as if it were a contract engagement. The hiring manager wants to see code artifacts and signal-to-noise numbers, not chronological gaps.