engineering
Posted 3 days agoStaff Engineer - Offensive Security
at Twilio
United StatesRemote
Responsibilities
- Custom Exploit Development: Build custom payloads, droppers, and obfuscated scripts to bypass EDR/AV and maintain stealth.
Requirements
- We use Artificial Intelligence (AI) to help make our hiring process efficient. That said, every hiring decision is made by real Twilions! .
- AI/LLM Probing: Perform initial prompt injection and jailbreak tests on AI prototypes, services, and applications using established checklists (OWASP Top 10 for LLMs).
- Tool Maintenance: Manage and update the team's testing infrastructure (e.g., Burp Suite, and basic C2 listeners).
- Remediation Support: Provide direct technical guidance to engineering teams on how to patch vulnerabilities like XSS, SQLi, and IDOR.
- AI Red Teaming Architecture: Build automated testing frameworks for AI systems (e.g., using PyRIT, Promptfoo, or Garak) to test for models related to sensitive data leakage.
- Cloud & Infrastructure Attacks: Execute sophisticated attacks against AWS/Azure/K8s, focusing on IAM misconfigurations and container escapes.
- Twilio values diverse experiences from all kinds of industries, and we encourage everyone who meets the required qualifications to apply.
- Concepts: Expert Knowledge and solid understanding of the MITRE ATT&CK matrix and the OWASP Top 10 for web applications and top 10 for LLMs, post exploitation (lateral movement, persistence, data exfiltration) and Adversarial ML.
- Tooling: Proficient in OffSec popular tools like Burp Suite professional, Nmap, Metasploit, Wireshark etc... and AI security tools such as LangChain, TensorFlow for adversarial testing or, as well as use of C2 frameworks (Cobalt Strike, Sliver, Havoc) or similar tools
- Scripting and Coding: Ability to write functional scripts in Python or Bash to automate repetitive testing tasks and proficiency in coding and scripting like Python, C++, and scripting for creating custom offensive exploits that avoids signature-based detection.
- Certifications: Possession of advanced industry certifications such as OSCP, OSEP, OSWE, GXPN or similar training in OffSec tracks is highly desirable
- Ability to influence and build effective working relationships with all levels of the organization.
- Proficiency in multiple languages applicable to the region.
- Familiarity with localization tactics to ensure our content is accessible and inclusive across multiple APJ countries. Location
- For this role, you may be required to travel occasionally to participate in project or team in-person meetings. What We Offer
- Additionally, Twilio participates in the E-Verify program in certain locations, as required by law.
Benefits
- Strategic Bug Bounty Management: Oversee the organization's bug bounty program, identifying trends in submissions to suggest broad architectural security changes.
- Working at Twilio offers many benefits, including competitive pay, generous time off, ample parental and wellness leave, healthcare, a retirement savings program, and much more.
- Offerings vary by location. Compensation
- The estimated pay ranges for this role are as follows:
- Based in Colorado, Hawaii, Illinois, Maryland, Massachusetts, Minnesota, Vermont or Washington D.C. : $155,520.00 - $194,400.00.
- Based in New York, New Jersey, Washington State, or California (outside of the San Francisco Bay area): $164,640.00 - $205,800.00.
- Based in the San Francisco Bay area, California: $182,960.00 - $228,700.00.
- This role may be eligible to participate in Twilio’s equity plan and corporate bonus plan. All roles are generally eligible for the following
- benefits: health care insurance, 401(k) retirement account, paid sick time, paid personal time off, paid parental leave.
- The successful candidate’s starting salary will be determined based on permissible, non-discriminatory factors such as skills, experience, and geographic location.
Additional details
- At Twilio, we’re shaping the future of communications, all from the comfort of our homes.
- We deliver innovative solutions to hundreds of thousands of businesses and empower millions of developers worldwide to craft personalized customer experiences.
- Our dedication to remote-first work , and strong culture of connection and global inclusion means that no matter your location, you’re part of a vibrant team with diverse experiences making a global impact each day.
- As we continue to revolutionize how the world interacts, we’re acquiring new skills and experiences that make work feel truly rewarding.
- Join the team as Twilio’s next Staff Offensive Security Engineer. About the job
- You don't just find bugs; you design complex attack chains that demonstrate systemic risk.
- You spend as much time writing custom code and researching new bypasses as you do executing tests. Responsibilities
- Full-Stack Penetration Testing: Perform manual and automated testing of web applications, APIs, and mobile apps (iOS/Android).
- Internal/External Network Audits: Conduct network and cloud level assessments with various tooling
- Vulnerability Validation: Triage and validate reports from automated scanners or bug bounty hunters to eliminate false positives and escalate true positives