Security Engineer, Red Team
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Salary
$210k – $290k per year
Location
Remote (United States)
Seniority
Middle · 3+ years exp
Visa
H-1B filings in 12 months: 48 · for this role: 3 · green card filings: 8
Employment
Full-Time
Confirmed on the employer's own hiring board on Nov 7, 2026. First seen by Alion on Nov 6, 2026. Whatnot scores A on the Alion truth index.
Overview
Company
Impact
Profile match
Whatnot is a US live shopping marketplace headquartered in San Francisco where sellers host livestreams to sell trading cards, collectibles, fashion, electronics, live plants and many other categories. Founded in 2019 and backed by investors including Andreessen Horowitz, Y Combinator and CapitalG, it operates in North America, Europe, Australia and Japan with teams in New York, Los Angeles, London, Dublin, Berlin, Krakow, Sydney and Tokyo. It hires software and application security engineers, product designers, sales managers for international markets, recruiters, communications managers and finance and tax staff.
Join Whatnot, the largest live shopping platform in North America and Europe. As a Security Engineer on the Red Team, you will plan and run authorized red team operations, build and maintain AI-assisted testing harnesses, and work collaboratively with the Blue Team to strengthen Whatnot's overall security posture. You should have 3+ years of experience in offensive security, strong programming skills in Python, and deep knowledge of at least two areas of security. Benefits include generous time off, health insurance options, work from home support, care benefits, retirement plans, and parental leave.
Missions
- Plan and run authorized red team operations across cloud (AWS), Kubernetes, networks, identity systems, SaaS, and internal applications.
- Build and maintain AI-assisted testing harnesses: agent loops that run recon, attack-path discovery, fuzzing, and exploit validation.
- Use LLMs and agentic tools to speed up vulnerability research, payload and test-case generation, code review, and report drafting.
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