Senior Security Researcher

Position:
Senior Security Researcher

Company:
Cobalt

Compensation:
$120,000 - $150,000 per year + equity + benefits

Location:
United States (Remote - East / Central)

Employment type:
Not specified

Work Arrangement:
Remote

Short Summary:
At Cobalt.io, as a Senior Security Researcher, you will conduct advanced vulnerability research and security assessments across modern application and operating system stacks, cloud infrastructure, and critical enterprise systems.

Responsibilities:
- Conduct deep-dive vulnerability research, reverse engineering, and threat analysis across modern Web/API platforms, mobile operating systems, low-level OS stacks, cloud infrastructures (GCP/AWS/Azure/K8s), and critical enterprise software systems.
- Identify high-impact vulnerabilities and develop proof-of-concept (PoC) exploit techniques.
- Research emerging threat vectors and maintain industry-leading testing guidelines.
- Collaborate with Product and Engineering teams to enhance security assessment capabilities.
- Partner with engineering, product, and operations teams to translate security research into actionable customer value.
- Provide technical guidance and mentorship to junior researchers.
- Represent Cobalt in the security research community through technical publications and presentations.

Requirement:
- 5+ years of experience in offensive security, vulnerability research, penetration testing, or reverse engineering.
- Technical expertise in modern application stacks (Node.js, Go, Python, Java, Rust) and operating system security fundamentals.
- Proven ability to analyze binary, source code, or bytecode to construct reliable PoC exploits.
- Strong proficiency in Python, Go, Bash, or Rust for building custom research tools.
- Ability to document complex technical findings clearly.
- US-Based candidates only (EST or CST time zone preferred).

Benefits:
- Competitive compensation and equity plan.
- 401(k) program (US) or pension (EU).
- Medical, dental, vision, and life insurance (US) or statutory healthcare (EU).
- Stipends for wellness, work-from-home equipment, and learning & development.
- Flexible, generous paid time off and paid parental leave.