Scan your resume against ATS criteria for this Sr. Vulnerability Researcher (US) role at Vulncheck.
Exploitation prevention is as strong as the intelligence driving those efforts, and most of the industry is still running on intelligence that lacks exploit context. VulnCheck, The Exploit Intelligence Company, delivers structured exploit intelligence on what is actively weaponized in the wild, purpose-built for the data lakes, ETL pipelines, automation, and AI and LLM workflows your infrastructure already runs on, raising the capability of everything it powers.
We’re looking for a Senior Vulnerability Researcher to join our agentic vulnerability discovery team. This role sits within our Initial Access Intelligence group, which delivers exploits, detections, and other artifacts designed for active cyber defense. You'll work with a seasoned team of hackers and threat researchers to find and weaponize new vulnerabilities across a range of operating systems, platforms, and devices — before adversaries do.
You'll drive original research from exposure analysis and reverse engineering through vulnerability discovery and weaponized exploit development. You'll also help push the state of the art in how VulnCheck finds bugs by applying novel agentic approaches to vulnerability discovery and exploit creation. This is a 100% remote role based in the United States.
VulnCheck stands behind its mission to influence how organizations worldwide understand, assess, and remediate security vulnerabilities — and to deliver intelligence-based solutions that change the world.
You'll be joining a collaborative, supportive environment that values intellectual curiosity, technical mastery, and personal growth. (And more, below!)
Conduct vulnerability research to identify net-new vulnerabilities across a range of operating systems, platforms, and devices
Reverse engineer a variety of firmware and software
Author original exploits, network rules (Suricata / Snort), and other artifacts (e.g., Docker containers, version scanners, ASM queries) to accompany new vulnerability finds
Apply and expand agentic approaches to scale vulnerability discovery and exploit development
5+ years of full-time vulnerability research experience, including experience targeting networking device firmware, embedded Linux/RTOS-based systems, and/or network protocols
Demonstrable experience with agentic approaches to vulnerability discovery and exploit development
Experience developing original (weaponized) exploit code
Comfort acquiring, unpacking, and analyzing target firmware and appliances, including reasoning about network protocols and unauthenticated attack surface
Familiarity with embedded architectures (MIPS, ARM) and firmware extraction/unpacking (e.g., binwalk).
Experience with dynamic analysis and debugging on embedded/emulated targets (e.g., QEMU)
Working knowledge of common networking protocols (TCP/IP, routing protocols, VPN protocols such as IPsec/SSL-VPN, SNMP, etc.).
Strong reverse engineering skills, including static and dynamic analysis of compiled binaries and firmware (VulnCheck uses Ghidra for reversing)
Strong command of memory corruption and other vulnerability classes (e.g., stack and heap overflows, use-after-free, type confusion, integer errors, command and path injection, authentication and logic flaws)
Solid working knowledge of C/C++ and at least scripting language (e.g., Python)
Experience working on technical projects remotely, alone, and on small teams.
Prior cybersecurity work experience (at a vendor or in government)
A track record of discovering new vulnerabilities (e.g., CVEs, advisories, exploits, or published research)
Able to share example research or exploit code written
We believe people do their best work when they feel supported, trusted, and valued. VulnCheck offers benefits designed to meet a wide range of needs and lifestyles, tailored to your country of employment:
Generous, flexible time off
Retirement/pension plan contributions (e.g., 401k with match in the US; local pension schemes elsewhere)
Comprehensive healthcare coverage
Generous paid parental leave
Remote-friendly environment with flexibility
Support for home office costs (phone & internet)
Specific benefit details vary by country and are confirmed during the offer process.
Built on over two decades of cybersecurity experience, our team of experts understands the intricacies of vulnerabilities, their exploitation in the wild, and how to leverage this data to build more effective cybersecurity products that produce better outcomes for organizations.
VulnCheck gives organizations a tactical advantage by providing best-in-class exploit & vulnerability intelligence information. We have a sense of duty to protect the critical infrastructure we rely on including medical devices, power grids and telecommunication networks. We were founded in 2021 in Lexington, Massachusetts.
VulnCheck has a transparent, collaborative, and supportive culture — we are looking for people who have a growth mindset, are curious and innovative. Our team is smart, but humble, hardworking, and supportive.
VulnCheck is proud to be an Equal Employer Opportunity employer. We do not discriminate based upon race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. VulnCheck is committed to working with and providing reasonable accommodations to applicants with physical and mental disabilities. Even if your experience doesn't perfectly align with the job description, we encourage you to apply—we value potential just as much as a perfect resume.
401k with match in the US; local pension schemes elsewhere)
How to apply for Sr. Vulnerability Researcher (US) at Vulncheck?
Click the "Apply on Company Website" button on this page to submit your application directly on the employer's official portal.
What is the salary for this role?
Salary details will be discussed during the interview.
What experience is required?
5+ years of experience is required.
Is this position still open?
Yes, currently active and accepting applications.
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