Security Researchers Jobs - April 2026
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Red Balloon Security
Security Researchers
Posted 2 months, 3 weeks ago
Team of researchers and engineers focused on securing embedded devices and working on government-funded research. Responsibilities include hardware teardown and firmware reverse engineering, developing automated robotic hardware-reverse-engineering platforms,…
Tech stack
Location
NYC, Northern Virginia, Manhattan
Compensation
Paid internships and full-time roles; no salary or detailed benefits disclosed. US citizenship required; active security clearance or willingness to obtain one is a plus.
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Promptfoo
Senior / Staff AI Security & Red-Team Engineer
Posted 10 months, 3 weeks ago
Promptfoo is the MIT-licensed open-source toolkit 125 000+ developers use to evaluate and secure LLM apps. We just closed an $18.4 M Series A led by Insight Partners with participation from a16z and are scaling a small, senior team of high-agency builders.
Roles
Tech stack
Location
REMOTE (North America), Hybrid San Mateo CA
Compensation
Competitive salary, meaningful equity, async-friendly culture of ownership.
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River Loop Security
Research Engineers
Posted 4 years, 6 months ago
River Loop Security specializes in solving complex cybersecurity challenges across the commercial and federal space. In the federal space we work to solve DARPA hard problems and fulfill our customers' mission needs. We are looking to hire for the following r…
Tech stack
Location
Maryland, DC, Virginia
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River Loop Security
Security Researchers
Posted 5 years ago
River Loop Security specialize in solving complex cybersecurity challenges across the commercial and federal space. In the federal space we work to solve DARPA hard problems and fulfill our customers' mission needs. We are looking to hire a number of Security…
Tech stack
Location
Maryland, DC, Virginia
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Microsoft
Security Engineers
Posted 7 years, 4 months ago
We are the Windows Defender Team and we have many open positions for you to apply to. Are you interested in radically improving the computer security? Do you want to work on cutting edge malware analysis systems? Are you committed to helping Microsoft custome…
Tech stack
Location
Redmond, WA