-
Malwarebytes

Senior Security Researcher

Malwarebytes
Estonia · Full-time · Mid-Senior

Description

Malwarebytes believes that when people and organizations are free from threats, they are free to thrive. Founded in 2008, CEO Marcin Kleczynski had one mission: to rid the world of malware. Today, Malwarebytes has grown beyond malware remediation to ensuring cyber protection for everyone, providing device protection, privacy, and prevention solutions in the home, on-the-go, at work, or on campus. With threat hunters and innovators across the world, we want great people, like YOU, to join our team!

Malwarebytes is looking for..

A seasoned and innovative Cybersecurity Researcher to join our world-class security team. We're seeking someone who is passionate about protecting consumers from evolving digital threats, excels at uncovering sophisticated attack vectors, and thrives on translating cutting-edge research into real-world security solutions. As a Cybersecurity Researcher, you'll be at the forefront of threat intelligence, conducting critical research that directly strengthens our Malwarebytes consumer security products and helps safeguard millions of users worldwide from web-based attacks and emerging cyber threats

What You’ll Do

  • Conduct in-depth research and analysis of threats targeting consumers.
  • Investigate, analyse, and expand Malwarebytes security, by exploring real in-the-wild data and threats, developing protection strategies.
  • Drive the integration of research findings into product features, ensuring enhanced security capabilities. Collaborate with product teams to prioritize security features based on threat landscape analysis
  • Stay ahead of the latest security trends, technologies, and best practices to maintain expertise in the field.
  • Work closely with our team of security analysts and engineers to innovate in the field of consumer cyber security.

Skills You’ll Need To Have

  • 6+ years of hands-on experience in a security research team.
  • 5+ years of Experience in pen-testing, threat hunting, and vulnerability research.
  • Experience with threat intelligence, malware analysis or web research, reverse engineering, and staying current with emerging threats and attack vectors.
  • Ability to conduct independent security research and document findings and recommendations clearly.
  • Self-motivated, with a passion for continuous learning and professional development.
  • Proficiency in programming languages such as Python/JavaScript/C/C++/Go for developing security tools and proof-of-concept exploits.

Skills We’d Like You To Have

  • Industry recognized author of security research papers, blogs, or conferences talks.
  • Deep understanding of web protocols, web frameworks, APIs and client-side technologies (HTML, CSS, JavaScript). Knowledge of server-side technologies and database systems.
  • Active participation in security communities, CTFs, or bug bounty programs.
  • Emerging technologies security like AI & LLM threats, identity-based attacks.
  • Privacy oriented mindset.

Benefits And Perks

  • An opportunity to do something great for yourself and the world 
  • A great work environment that supports growth, development, and well-being 
  • Comprehensive medical, dental, and vision insurance coverage, subject to change by country/region
  • Employee Referral Bonus Program
  • Wellness programs 

Key Skills

Ranked by relevance

cybersecurity reverse engineering malware analysis cyber security javascript server css ai
Login to Apply
Posted
Sep 04, 2025
Type
Full-time
Level
Mid-Senior
Location
Tallinn

Industries

Computer Network Security

Categories

Information Technology

Related Jobs

3 roles aligned with this opportunity

View all jobs
View Job Details
SecurityScorecard
Related

Threat Researcher

2026-05-25

Full-time
Mid-Senior
Portugal
Security
Information Technology
View Job Details
SecurityScorecard
Related

Threat Researcher

2026-05-25

Full-time
Mid-Senior
Portugal
Security
Information Technology
View Job Details
IBSS
Related

Information Systems Security Officer (ISSO)

2026-05-27

Full-time
Mid-Senior
United States
IT Services
Information Technology