TuxCare provides security solutions for Linux and open-source software used by enterprise organizations. Our products help companies automate vulnerability patching, reduce downtime, maintain security and compliance, and support critical systems throughout their lifecycle. We are looking for a Senior / Principal Security Research Engineer to start the Security Research & Automation function of SecureChain. SecureChain is TuxCare's open-source software supply chain security product. It provides packages rebuilt from verified source code, scanned for malware and supply chain risks. You will be the first engineer of a new function, with a plan to grow it to three or four people. You are a security researcher first, and you build production-quality tools and pipelines to scale your research. Build pipelines that find and help fix high and critical vulnerabilities in maintained and end-of-life open-source software. # Publish useful, evidence-backed security research after coordinated disclosure. Owning SecureChain's malicious-code detector: alert review and classification, test corpus, quality benchmarks, false-positive and coverage metrics. Extending detection with artifact scanning, static signals, dynamic analysis and external intelligence. Building repeatable pipelines that discover new vulnerabilities in software that SecureChain and ELS support, with priority on high/critical risks and on EOL versions customers still use. Developing AI-assisted methods to generate and test candidate fixes, and feeding them into our patch automation. CVE assignment, record quality and coordinated disclosure with upstream projects.



Preparing technical write-ups and research publications together with Marketing. inventory services, data, prompts, corpus and open work. Days 61–90: expand discovery across the ecosystem, complete coordinated disclosure where applicable, publish the first research output. Security research background: malware or software supply-chain research, vulnerability discovery and root-cause analysis. Strong Python or another suitable systems language; CI pipelines, test automation and operating services. Practical use of static analysis, fuzzing and sandboxing. Heavy, daily use of AI-assisted tools in research and engineering. PyPI, npm, Maven, Go, Linux distributions). Clear research reports and experience with coordinated disclosure. Advanced written and spoken English. Published CVEs, advisories or security research. Experience with CNA operations or vulnerability databases (CVE, OSV). This is not a SOC analyst, compliance, penetration testing or general software development role. What's in it for you? A focus on professional development. Interesting and challenging projects. Fully remote work with adaptable

working hours
, that allows you to schedule your day and work from any location worldwide. Paid 24 days of vacation per year, 10 days of national holidays, and unlimited sick leaves. Compensation for private medical insurance. Budget for education. By applying for this position, you consent to the processing of your personal data as described in our Privacy Policy () , which provides detailed information on how we maintain and handle your data.

📌 Senior Security Research Engineer (España)
🏢 TuxCare
📍 España