SONAR is the adversary research team within Elastic Security
We discover novel adversary behavior through malware reverse engineering, threat hunting, and vulnerability research, turn every discovery into protections that ship to customers, and share our work publicly through Elastic Security Labs
We want to make environments hostile to adversaries, and to put rare knowledge and tooling within reach of every defender
We are looking for a Senior Security Research Engineer to take on our hardest analysis work and help set the technical direction of the team
Our geographically dispersed team values positivity and inclusivity in the workplace, explicit communication, collaborative learning, and guided mentorship
Our research is public, and much of it is work you may already know: this team identified the supply chain compromise of the axios npm package, uncovered a new Contagious Interview campaign hiding DPRK malware inside SVG images, and published in-depth analyses of the TCLBANKER banking trojan and the PHANTOMPULSE RAT, each one paired with protections that shipped to customers
If you have a passion for taking apart what adversaries build, and would enjoy the challenge of getting that understanding into customers' hands quickly, join our growing team!
Reverse engineer malware nobody has documented yet. Take apart obfuscated and packed samples across Windows, macOS, and Linux, and recover how they communicate, configure themselves, and stay hidden
Operate global data systems to identify and mitigate threats. Work through data from millions of endpoints to surface the activity worth investigating, build the campaign context that tells customers who is targeting them, and push mitigation back out across the fleet
Turn every discovery into a shipped protection, and the tooling that scales it. Author the signatures that stop what you find,



and build the automation and AI-assisted workflows that make the next investigation faster than the last
Build your public research reputation. Publish on Elastic Security Labs, release tools and detection artifacts to our public GitHub repositories, and present at conferences. We encourage a public persona and the relationships in the research community that come with it
Collaborate across Elastic Security. Your discoveries become the rules and models that neighboring teams build and ship, and you will work with those teams directly on shared threat intelligence and detection engineering projects
Help lead the team's technical direction. Take point on investigations that run for months, raise the bar in review, and mentor researchers earlier in their careers
Benefits Toast to your health: Fully paid health coverage for you and your family, in many locations.
Craft your calendar: Flexible location and schedule for most roles.
Create space for you: Distributed by design workforce, plus generous number of vacation days each year.
Embrace parenthood: Minimum of 16 weeks of parental leave, plus generous family formation benefits.
Give back your time: 40 hours each year to use toward volunteering with organizations and causes you're passionate about.
Amplify your impact: Double your charitable giving — we match donations up to $1500 USD (or local currency equivalent).
You have a proven track record of using AI to accelerate development, debug complex systems, and optimize code, while still owning the final outcomesYARA authorship and hunting at scale.



You write signatures that hold up against the next variant, and you can find a weak signal in a very large telemetry datasetPython development experience for research tooling and automation, plus the ability to read C and C++. Malware arrives in Rust, Go, and NodeJS too, so you are willing to learn a new runtime when a sample demands itProven ability to seamlessly transition between different projects, codebases, or scrum teams based on dynamic business priorities6+ years of professional experience reverse engineering malware and researching adversary tradecraft, static and dynamic, across multiple executable formats (PE, ELF, Mach-O) and architectures (x86-64, ARM), including obfuscated and packed code that defeats automated toolingTechnical writing ability. You can turn a long investigation into a explicit, public analysis that other defenders can act onWorking knowledge of the fundamentals: Windows and Linux internals, network protocols including HTTP and TLS, and enough applied cryptography to recognize what is protecting a configuration blobA collaborative mentality, an eagerness to learn new skills and emerging technologies, and a passion for protecting the world's data from attack!Vulnerability research or novel technique discovery, with a track record of responsible disclosureParticipation in CTFs such as FLARE-ON or NetWarsStanding in the community: maintaining an open-source security tool, speaking at conferences (e.g., Black Hat, DEF CON, CODE BLUE, Virus Bulletin), or an established publication recordAttribution tradecraft, including joint investigations with external intelligence partners and platforms such as MISP or OpenCTIBehavioral detection engineering beyond signatures, or applying machine learning to malware classificationFamiliarity with the Elastic Stack (Elasticsearch, Kibana) and Elastic Security

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📌 Senior Security Research Engineer (Security Operations and Novel Adversary Research) (Quebec City)
🏢 Elastic
📍 Quebec City