1,323 principal researcher jobs at 512 companies in United States
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Principal Researcher
Chicago, Illinois, United States
$75k/yr HybridFull Time
5+ YOEPhD or ABD preferred; 5-7 years related experience; strong Python and deep learning skills; ability to conduct collaborative research and data analysis.
Python, PyTorch, Deep Learning Frameworks
3mo
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Principal AI Researcher
Pleasanton or Atlanta or Seattle
$228k-$342k/yr HybridFull Time
8+ YOE8+ years AI/ML research; PhD or Master’s in CS/AI/Math/Physics; 4+ years DL frameworks; 2+ years LLMs/VLMs; strong publication or production impact.
PyTorch, JAX, TensorFlow
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Principal Security Researcher (Xpanse)
United States
$163k-$263k/yr OnsiteFull Time
5+ YOE5+ years in vulnerability management or security research; experience with public vuln research, CVEs or PoCs; strong networking; familiarity with security tools; Python proficient; OS knowledge; base security certifications or willingness to obtain.
Nuclei, OpenVAS, Nmap, Metasploit, Burp Suite, Wireshark, Python, Java, Golang, C/C++, RUST
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Principal Researcher (Santa Clara, California, US)
Santa Clara, California, United States
$188k-$210k/yr OnsiteFull Time
3+ YOEPh.D. in a relevant field, 3+ years post-PhD research experience in superconducting circuits/cQED, strong publication record, expertise in theory or experimental superconducting quantum computing, programming (Python/Julia/C++), and simulation tools.
Python, Julia, C++, COMSOL, Ansys HFSS, dilution refrigerators, cryostats, network analyzers, spectrum analyzers, arbitrary waveform generators
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Senior Security Researcher and Principal Security Researcher (Multiple Positions) (200045824)
United States
OnsiteFull Time
Positions for experienced security researchers at Microsoft; roles include senior and principal levels focused on advanced security research.
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Principal Experience Researcher
Boston or Andover
$155k-$179k/yr HybridFull Time
12+ YOE12+ years design experience; Bachelor's in design/HCI or related; strong research portfolio; English fluency; travel 10-15%; U.S.-based; multiple software tools experience.
Figma, FigJam, Dovetail, Maze
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Principal Researcher, Botnet & DDoS Threats
San Jose, California, United States
$200k-$215k/yr HybridFull Time
Strong binary reverse engineering, malware analysis, and network protocol expertise; Python/Go proficiency; clear cross-team communication.
Ghidra, IDA, Capstone, GoReSym, Python, Go, Scapy, tshark, Any.run, Joe Sandbox, Cuckoo, MalwareBazaar, VirusTotal, macOS, Linux
1w
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Principal Security Researcher
Redmond, Washington, United States
$143k-$275k/yr RemoteFull Time
4+ YOEMaster's+4 years or Bachelor's+6 years (or equivalent) in computing/security; hands-on vulnerability research, fuzzing, exploitability assessment, and tool development experience.
SARIF, C, C++, C#, Java, JavaScript, TypeScript, Python, large language models
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Principal Vulnerability Researcher
Herndon, Virginia, United States
$181k-$289k/yr OnsiteFull Time
Lead vulnerability research on embedded systems; expert in C/C++ and Python, reverse engineering, firmware analysis, emulation, fuzzing, and mentoring junior staff. Active Top Secret clearance required or eligible.
C, C++, Python, Linux, IDA Pro, Binary Ninja, Ghidra, QEMU, JTAG, UART, oscilloscope, logic analyzer
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Principal Applied Researcher
San Jose or Seattle
$206k-$388k/yr OnsiteFull Time
Masters or PhD preferred in CS or related fields; strong programming and proficiency with PyTorch, TensorFlow, or JAX; experience with transformers, diffusion/GANs, cloud/MLOps, production ML deployment, and reading/prototyping research.
PyTorch, TensorFlow, JAX, Horizon AI Stack
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Principal Researcher – Infrastructure & Systems
San Jose, California, United States
RemotePart Time
2+ YOEDeep knowledge of infrastructure economics, project finance, or urban systems; 2+ years analytical/research experience; strong writing, policy interpretation, and regional familiarity with Asia/Europe/North America.
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Principal UX Researcher
Arlington or San Francisco or Austin or New York City
$230k-$320k/yr HybridFull Time
12+ YOE12+ years in UX/design research with 6+ years at senior/staff level; deep qualitative and quantitative research expertise; experience scaling research practice, influencing execs, and mentoring researchers.
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Associate Principal - Outcomes Researcher
United States
$119k-$176k/yr RemoteFull Time
5+ YOEPhD in a related field, 5–8 years of postdoctoral or industry research experience, publication record, longitudinal data analysis, statistical platform proficiency, and experience conducting IRB-approved studies.
R, Python, SPSS, Stata, WHO-5, PHQ-9, GAD-7, IRB
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Principal AI/ML Researcher
Boston, Massachusetts, United States
$270k-$300k/yr OnsiteFull Time
Advanced degree or equivalent experience in large-scale ML, deep learning and multimodal research; proven record of taking research to production and leading technical direction.
transformers, state space models, PPO, DPO, GRPO
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Principal Neuroscience Researcher, Sensory Explore
Beaverton, Oregon, United States
OnsiteFull Time
10+ YOEMaster's-level neuroscience or sensory science expertise,10+ years experience applying neuroscience/sensory research to products,research design,statistics,data interpretation,team leadership,and science communication.
3mo
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Principal User Researcher, Senior Talent & Transformation: Design
Seattle, Washington, United States
$181k-$245k/yr OnsiteFull Time
10+ YOE10+ years UX research with executive leadership; strong research methods; advanced degree in Data Science, HCI, or related field; ability to influence senior partners.
UX research, ethnography, contextual inquiry, surveys, statistical analysis
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Principal Neuroscience Researcher, Sensory Explore
Beaverton, Oregon, United States
OnsiteFull Time
10+ YOEMasters or equivalent experience, 10+ years expertise in neuroscience or sensory science, experience leading research programs and teams, strong experimental design and statistical skills, technologist experience applying measurement and technical tools, and strong communication.
2mo
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Senior/Principal Researcher, Medicaid Policy and Program (Remote Eligible)
Remote or Ann Arbor or Cambridge or Chicago or Princeton or Washington or Windsor Mill
$145k-$200k/yr RemoteFull Time
10+ YOESenior state Medicaid leader with 10+ years (Sr) or 15+ years (Principal); Master’s or doctoral degree in analytics/public policy; strong quantitative/qualitative methods; excellent written/spoken communication; project leadership.
1mo
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Cyber Researcher, Attack Emulation (Senior / Principal)
Burlington or Golden or Israel
$180k-$220k/yr RemoteFull Time
5+ YOE5+ years security research/penetration testing, 3+ years Python, strong Windows/Linux internals, reverse engineering, cloud (AWS/Azure), and proficiency with security tools (Metasploit, Nmap, Burp).
Python, Metasploit, Impacket, Nmap, Burp, IDA, Ghidra, WinDBG, Radare2, Windows, Linux, AWS, Azure
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Principal Battlespace Cybersecurity Researcher (Onsite)
Cedar Rapids, Iowa, United States
$108k-$205k/yr OnsiteFull Time
5+ YOEU.S. citizenship and ability to obtain/maintain DoD Top Secret clearance; STEM degree (BS required or advanced degree preferred) with 5+ years cybersecurity/embedded systems experience (8+ years with BS); experience leading R&D projects and threat/vulnerability research.
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