F5 · 2 days ago
Sr. Security Researcher
Field-MA
Full-time
Hybrid
Mid, Senior Level
$134K/yr - $200K/yr
2+ years expF5 is a company dedicated to enhancing the digital world through secure applications. They are seeking a Senior Security Researcher to join their security threat research group, focusing on analyzing security threats, developing attack signatures, and improving product defenses.
Consumer ElectronicsSaaSSecurityVirtualization
Responsibilities
Researching web frameworks and servers to identify and understand emerging threats
Examining and replicating newly disclosed web application vulnerabilities
Focusing on WAF (Web Application Firewall) evasion techniques to preemptively bypass our defenses before hackers can
Creating innovative proof of concept solutions for advanced threats and continuously refining attack signatures, all in collaboration with development teams to enhance the WAF product using our research findings
Gathering web security intelligence from blogs, forums, conferences, and academic papers
Building tools and infrastructure for analyzing attacks
Composing and distributing insights through blogs, reports, and presenting at security conventions
Periodically performing security efficacy assessments on a variety of products, including WAFs, API security solutions, application security scanners, and machine learning models, to verify and improve their defense capabilities
Qualification
Required
At least 2 years of experience in analyzing real web attacks or web exploitation, with a strong preference for more extensive experience
A deep knowledge of networking fundamentals, the HTTP protocol, web servers, and the inner workings of web applications is essential
Experience in tracking emerging web vulnerabilities in real-time
Experience in building research infrastructure and Python-based tools
Experience with creating and comprehending Regular Expressions for detailed pattern matching and security-related data analysis
In-depth knowledge of security principles, theories, and recognized attack vectors
Preferred
Experience in creating attack signatures, such as with tools like SNORT
Analyzing binary malware and malicious scripts
Knowledge in web development (front and back end)
Benefits
Incentive compensation
Bonus
Restricted stock units
Benefits
Company
F5 is a multi-cloud application services and security company that specializes in application security, performance, and delivery.
5001-10000 employees
H1B Sponsorship
F5 has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (155)
2024 (110)
2023 (211)
2022 (194)
Funding
Current Stage
Public CompanyTotal Funding
unknownKey Investors
Elliott Management Corp.
2020-11-08Post Ipo Equity
1999-06-04IPO
1998-09-24Series Unknown
Leadership Team
François Locoh-Donou
President and CEO
Mohan Veloo
Chief Technology Officer - Asia Pacific, China & Japan
Recent News
2025-12-24
Company data provided by crunchbase