All roles

Open role

Security Engineer – Research & Test

Remote · Brazil Full-time

Job Description:

  • Conduct security research and vulnerability analysis across fintech and cryptographic systems.
  • Design and build automated security testing infrastructure using Rust and shell scripts.
  • Develop and maintain comprehensive security test suites, including fuzzing, penetration testing automation, and cryptographic protocol testing.
  • Build monitoring and alerting systems to detect security anomalies and potential attack vectors.
  • Perform threat modeling and security assessments of system architecture and code implementations across multiple projects.
  • Research and analyze emerging attack techniques, vulnerabilities, and defensive technologies relevant to financial systems and cryptographic protocols.
  • Create tools and frameworks for continuous security validation in CI/CD pipelines.
  • Document security findings and translate research into actionable recommendations for the development team.
  • Maintain and enhance existing security testing tools and infrastructure.

Requirements:

  • Strong software development fundamentals with 2–4 years of experience.
  • Solid experience with Rust or willingness to learn quickly.
  • Comfortable with TypeScript and modern web technologies.
  • Strong experience with Linux systems and shell scripting.
  • Background in security testing methodologies, including static analysis, dynamic analysis, and penetration testing.
  • Knowledge of cryptographic concepts and secure coding practices.
  • Experience building automated testing infrastructure or CI/CD systems.
  • Familiarity with security tools and frameworks (SAST, DAST, fuzzing tools, etc.).
  • Knowledge of network protocol analysis and traffic inspection tools.
  • Strong analytical and problem-solving skills with attention to detail.

Benefits:

  • Health insurance
  • Professional development opportunities

More open positions

Cybersecurity Penetration Testing Expert (AI Security)

Work from home Full-time role

Senior Security Analyst

Work from home Full-time role

Threat Intelligence Analyst, Scams Expert

Work from home Full-time role

OSINT Analyst, Asia Focus

Work from home Full-time role

Senior CIRT / Threat Intel Analyst

Work from home Full-time role

Certified Credentialing Specialist – Work From Home

Work from home Full-time role

Senior Data Engineer

Work from home Full-time role

Remote Full time and Part time Call Center Agent

Work from home Full-time role

Remote Data Entry Clerk – High‑Speed Typing Specialist for Home‑Based Administrative Support at careerzynith

Work from home Full-time role

Entry-Level Remote Chat Support Specialist – careerzynith Online Customer Service Team (Flexible Hours, No Prior Experience Required)

Work from home Full-time role

Experienced Medical Coder, Biller & Scribe (Family & Internal Medicine)

Work from home Full-time role

Experienced Online Chat Agent – Delivering Exceptional Customer Experiences in a Dynamic Remote Environment

Work from home Full-time role

Foreign Systems Interface Senior Analyst (Remote)

Work from home Full-time role

[Remote] Senior Civil Municipal Engineer / Project Manager

Work from home Full-time role

Staff Software Engineer

Work from home Full-time role

Sr. VIP Travel Consultant (ATPI/Direct Travel) - Energy Sector

Work from home Full-time role

Junior Performance Marketer (Full Remote - Croatia)

Work from home Full-time role

Experienced Temporary Remote Chat Support Representative – Seasonal Customer Service Expert

Work from home Full-time role

Experienced Work-from-Home Chat Support Agent – Delivering Exceptional Customer Experiences at careerzynith

Work from home Full-time role

AI Language Expert - Japanese

Work from home Full-time role

[Remote] Associate Marketing and Campaigns Manager

Work from home Full-time role