# Senior Security Research Engineer (SecureChain)

**Company:** [TuxCare](https://jobs.workable.com/companies/jxdp5uaYdbsSKJ55LkKXQL.md)
**Location:** Remote
**Workplace:** remote
**Employment type:** Full-time

[Apply for this job](https://jobs.workable.com/view/72ec48e0-401e-4b0f-91fe-1f423e00f0f3)

## Description

**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.

Learn more about TuxCare: [tuxcare.com](https://tuxcare.com/)

**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.

Learn more: [tuxcare.com/securechain-for-oss](https://tuxcare.com/securechain-for-oss/)

**The Mission**

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.

The function has three goals:

1.  Detect malicious code before SecureChain publishes a package.
2.  Build pipelines that find and help fix high and critical vulnerabilities in maintained and end-of-life open-source software.
3.  Publish useful, evidence-backed security research after coordinated disclosure.

**You will be responsible for:**

-   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.
-   Reproducing findings, proving impact and reachability, and storing evidence so another researcher can repeat the result.
-   Developing AI-assisted methods to generate and test candidate fixes, and feeding them into our patch automation.
-   Owning TuxCare CNA work: CVE assignment, record quality and coordinated disclosure with upstream projects.
-   Preparing technical write-ups and research publications together with Marketing.

**Your first 90 days:**

-   **Days 1–30:** take over the malicious-code detector, its sample review and CNA responsibilities; inventory services, data, prompts, corpus and open work.
-   **Days 31–60:** improve the detector and its review workflow, measure alert volume, false positives and cost; start a vulnerability-discovery pilot on 5–10 packages of one ecosystem.
-   **Days 61–90:** expand discovery across the ecosystem, complete coordinated disclosure where applicable, publish the first research output.

## Requirements

**Must-haves:**

-   Security research background: malware or software supply-chain research, vulnerability discovery and root-cause analysis.
-   Strong Python or another suitable systems language; you build tools and pipelines that run in production.
-   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.
-   Experience with more than one package ecosystem (e.g. PyPI, npm, Maven, Go, Linux distributions).
-   Clear research reports and experience with coordinated disclosure.
-   Advanced written and spoken English.

**Nice-to-haves:**

-   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.

## Benefits

**What's in it for you?**

-   A focus on professional development.
-   Interesting and challenging projects.
-   Fully remote work with flexible 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.
-   Co-working and gym/sports reimbursement.
-   Budget for education.
-   The opportunity to receive a reward for the most innovative idea that the company can patent.

_By applying for this position, you consent to the processing of your personal data as described in our Privacy Policy (_[https://tuxcare.com/privacy-policies-hub/candidate-privacy-notice/](https://tuxcare.com/privacy-policies-hub/candidate-privacy-notice/)[_)_](https://cloudlinux.com/legal/privacy-policies-hub/)_, which provides detailed information on how we maintain and handle your data._