Application Security Engineer (X Money)

xAI

• $100K — $258K *
Finance & Insurance
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in Computer Science, Cybersecurity, or a related field
  • 3-5 years of experience in application security, focusing on code security practices
  • Experience in payments, money transmission, or digital wallets
  • Deep understanding of secure coding practices and common vulnerabilities (e.g., OWASP Top 10)
  • Proficiency in Python or Rust with secure coding experience
  • Experience securing CI/CD pipelines and implementing DevSecOps practices
  • Familiarity with software supply chain security and SBOM generation tools

Responsibilities

  • Conduct in-depth code reviews and static analysis to identify security vulnerabilities
  • Design and implement secure coding guidelines for development teams
  • Collaborate with development teams to integrate security into CI/CD pipelines
  • Perform threat modeling and risk assessments for financial products
  • Manage vulnerability tracking and remediation efforts
  • Oversee the bug bounty program, including researcher communication
  • Support incident response activities related to application security

Benefits

  • Equity in the company
  • Comprehensive medical, vision, and dental coverage
  • Access to a 401(k) retirement plan
  • Short & long-term disability insurance
  • Life insurance
  • Various discounts and perks
Full Job Description
ABOUT THE ROLE:

We are seeking a skilled and innovative Application Security Engineer to join 𝕏 Money. In this role, you will protect the security and integrity of our payments and financial products throughout the software development lifecycle, with a particular focus on code security, CI/CD pipelines, and systems that move and hold customer funds. Experience securing fintech, payments, digital wallet, ledger, or similar high-value platforms, where fraud, abuse, and unauthorized transfers are a constant concern, is strongly preferred.
RESPONSIBILITIES:
  • Conduct in-depth code reviews and static analysis to identify and mitigate security vulnerabilities in financial applications
  • Design and implement secure coding guidelines and best practices for development teams
  • Collaborate closely with development teams to integrate security practices throughout the CI/CD pipeline
  • Perform threat modeling and risk assessments for payments, wallets, ledgers, and related product surfaces, and develop mitigation strategies for fraud, abuse, and unauthorized movement of funds or credits
  • Manage vulnerability tracking and remediation efforts, providing guidance to development teams
  • Manage the bug bounty program, including intake, triage, researcher communication, and coordinated disclosure
  • Support incident response activities related to application security
  • Stay current on emerging threats against financial and cloud-native systems, and continuously strengthen our controls
  • Evaluate and secure software supply chains, including producing and maintaining Software Bills of Materials (SBOMs)
  • Design and implement agentic and LLM-based solutions that help detect, investigate, or prevent security problems
BASIC QUALIFICATIONS:
  • Bachelor's degree in Computer Science, Cybersecurity, or a related field
  • 3-5 years of experience in application security, with a strong focus on code security practices
  • Experience in payments, money transmission, digital wallets, or related financial platforms
  • Deep understanding of secure coding practices, application security frameworks, and common vulnerabilities (e.g., OWASP Top 10)
  • Proficiency in Python or Rust and experience with secure coding practices in these languages
  • Experience securing CI/CD pipelines and implementing DevSecOps practices
  • Familiarity with software supply chain security and SBOM generation tools
  • Experience with security testing tools (e.g., Burp Suite, OWASP ZAP) and static/dynamic code analysis
  • Experience securing payments, wallets, ledgers, or other high-value transaction systems, including controls against fraud, abuse, and integrity issues
  • Experience designing and implementing agentic and LLM-based solutions for security problems
  • Excellent communication skills, able to explain complex security issues to both technical and non-technical audiences
PREFERRED SKILLS AND EXPERIENCE:
  • Hands-on experience securing applications on AWS; familiarity with other cloud platforms is a plus
  • Relevant security certifications (e.g., BSCP, OSCP, OSWE)
  • Experience managing bug bounty programs
  • Background in data privacy and compliance relevant to financial products and cloud-native applications
  • Experience with GitOps and infrastructure-as-code security
  • Experience building custom security tooling to enhance and automate security processes
  • Contributions to open-source security projects or tools
COMPENSATION AND BENEFITS:

$100,000 - $258,000 USD

Base salary is just one part of our total rewards package at SpaceXAI, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks.

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