{"id":64064,"url":"https://alion.io/job/f5-sr-security-engineer-incident-response","title":"Sr. Red Team - Security Researcher","company":{"id":5759,"name":"F5","domain":"f5.com","url":"https://alion.io/company/ffive","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":84,"open_postings":24,"ghost_share":0,"stale_share":0.625,"repost_share":0,"time_to_fill_p50_days":43,"computed_at":"2026-10-29T05:49:05Z"}},"role":"Security","role_family":"Security","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":71000,"max_usd":128000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":29},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"C++","optional":false},{"name":"Hugging Face","optional":false},{"name":"LLM","optional":false},{"name":"Machine Learning","optional":false},{"name":"OWASP Top 10","optional":false},{"name":"Python","optional":false},{"name":"PyTorch","optional":false},{"name":"Red Teaming","optional":false},{"name":"Rust","optional":false},{"name":"TensorFlow","optional":false},{"name":"TensorFlow C++","optional":false}],"status":"live","first_seen_at":"2026-08-19T00:00:00Z","employer_posted_date":"2026-10-20","last_verified_at":"2026-10-29T19:27:36Z","board_verified":true,"closed_at":null,"days_open":71,"trust":{"level":"ok","repost_count":1,"flags":[],"days_open":71},"description":"At F5, we strive to bring a better digital world to life. Our teams empower organizations across the globe to create, secure, and run applications that enhance how we experience our evolving digital world. We are passionate about cybersecurity, from protecting consumers from fraud to enabling companies to focus on innovation. \nEverything we do centers around people. That means we obsess over how to make the lives of our customers, and their customers, better. And it means we prioritize a diverse F5 community where each individual can thrive.\nF5 is looking for Red Team Researcher (AI Security Focus) to proactively compromise and evaluate the security posture of our internet-facing traffic management, security platforms, and emerging AI/ML implementations. You will operate within the Office of the CISO as a highly specialized offensive security expert. Moving beyond traditional penetration testing, you will research, develop, and execute advanced adversary emulation campaigns with a specific focus on AI infrastructure, Large Language Models (LLMs), and mission-critical APIs.\nKey Responsibilities\nLead complex, objective-based Red Team operations targeting F5’s global infrastructure, products, and AI/ML deployments.\nConduct specialized AI/LLM penetration testing, including prompt injection, model inversion, data poisoning, and adversarial machine learning (AML) evasion techniques.\nResearch and develop custom exploits, C2 infrastructure, and offensive tooling leveraging AI to bypass modern security controls (EDR, WAF, XDR).\nPerform deep-dive vulnerability research on both traditional enterprise environments and AI pipelines (MLOps, vector databases, model hosting platforms).\nPartner directly with Engineering and Blue Teams to translate offensive findings into actionable architectural improvements, moving beyond patching to fundamentally harden systems.\nContribute to the broader security community through published research, zero-day disclosures, and presentations at top-tier security conferences (e.g., DEF CON, Black Hat).\nMentor internal engineering and security teams on the mindset of an advanced threat actor, specifically regarding the evolving landscape of AI-driven attacks.\nRequired Qualifications\n5-8+ years of hands-on experience in offensive cybersecurity (Red Teaming, Advanced Penetration Testing, Vulnerability Research).\nDemonstrated experience in AI/ML security testing, including a deep understanding of the OWASP Top 10 for LLMs and Adversarial ML frameworks (e.g., MITRE ATLAS).\nStrong programming/scripting proficiency (Python, Go, C++, or Rust) for custom tool development and exploit modification.\nDeep understanding of modern attacker tradecraft, including advanced persistence, evasion techniques, memory injection, and lateral movement in both on-premise and cloud (AWS/Azure) environments.\nFamiliarity with AI frameworks and libraries (e.g., PyTorch, TensorFlow, Hugging Face) and how they are deployed in enterprise architecture.\nAbility to translate highly technical exploit chains and zero-day research into strategic risk assessments for executive leadership.\nPreferred Qualifications\nProven track record of published security research, CVEs, bug bounty successes, or conference talks-especially in the realm of AI security or novel exploitation techniques.\nRelevant offensive security certifications (e.g., OSCP, OSEP, CRTO, CRTE, OSWE) are highly desirable.\nExperience compromising major cloud environments, SaaS platforms, and MLOps pipelines.\nThe Job Description is intended to be a general representation of the responsibilities and requirements of the job. However, the description may not be all-inclusive, and responsibilities and requirements are subject to change.\nPlease note that F5 only contacts candidates through F5 email address (ending with @f5.com) or auto email notification from Workday (ending with f5.com ).\nEqual Employment Opportunity\nIt is the policy of F5 to provide equal employment opportunities to all employees and employment applicants without regard to unlawful considerations of race, religion, color, national origin, sex, sexual orientation, gender identity or expression, age, sensory, physical, or mental disability, marital status, veteran or military status, genetic information, or any other classification protected by applicable local, state, or federal laws. This policy applies to all aspects of employment, including, but not limited to, hiring, job assignment, compensation, promotion, benefits, training, discipline, and termination. F5 offers a variety of reasonable accommodations for candidates. Requesting an accommodation is completely voluntary. F5 will assess the need for accommodations in the application process separately from those that may be needed to perform the job. Request by contacting .","description_format":"text","description_chars":4851,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"phd","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Penetration Testing","Network Security","Application Security","Web Security & DDoS Protection"],"lifecycle":[{"event":"open","at":"2026-08-19T00:00:00Z"},{"event":"close","at":"2026-10-16T03:13:37Z"},{"event":"reopen","at":"2026-10-20T11:18:26Z"}],"visa":[],"liveness":{"score":19,"band":"cold","label":"Long shot","p_open":1,"p_active":0.525,"p_room":0.36,"age_days":71,"expected_fill_days":43,"reasons":["conf:2","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-29T05:49:05Z"},"pay":null,"html_url":"https://alion.io/job/f5-sr-security-engineer-incident-response","json_url":"https://alion.io/job/f5-sr-security-engineer-incident-response.json","meta":{"generated_at":"2026-10-29T20:50:44Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":30843,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-30T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":5759},"rest":"https://alion.io/mcp/rest/get_company?id=5759"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ff5-sr-security-engineer-incident-response"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Ff5-sr-security-engineer-incident-response"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Ff5-sr-security-engineer-incident-response"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/f5-sr-security-engineer-incident-response\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ff5-sr-security-engineer-incident-response"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":64064}},{"tool":"search_jobs","arguments":{"company":"f5.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":64064},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}