System Security Expert

Description Commit is seeking a Cyber Security Expert with deep expertise in system security to lead and execute security initiatives that protect our clients' critical IT environments. We are Commit, a global tech services company delivering end-to-end solutions to startups and enterprises worldwide. We design, build, and scale high-impact products and systems, and security is at the core of everything we do. What You Will Do: • Lead and manage security projects across enterprise IT environments, ensuring alignment with best practices and regulatory requirements. • Secure and maintain servers, storage platforms, and network infrastructure, with a focus on availability and resilience. • Configure and manage Microsoft services, including AD, DNS, DHCP, and GPO. • Perform system hardening for Windows, Linux, SQL, and virtualization platforms following CIS, STIG, or equivalent standards. • Deploy, configure, and manage advanced security solutions, including NAC, SIEM, EDR, AV, DLP, PKI, and sanitization systems. • Drive automation of security tasks through scripting in PowerShell, Python, or Bash. • Collaborate with stakeholders to define security requirements and provide expert guidance throughout project lifecycles. Requirements What You Bring: • At least 3 years of hands-on experience in cybersecurity, with a strong focus on system security and infrastructure protection. • Proven track record in leading security projects and delivering end-to-end solutions in complex IT environments. • In-depth knowledge of Microsoft services (AD, DNS, DHCP, GPO) and enterprise IT infrastructure. • Expertise in system hardening across Windows, Linux, SQL, and virtualization technologies following industry security benchmarks. • Experience implementing and managing PKI and cryptographic solutions. • Strong understanding of enterprise security solutions such as SIEM, NAC, EDR, AV, and DLP. • Proactive mindset with strong ownership, problem-solving capabilities, and the ability to drive initiatives independently. • Excellent communication skills with the ability to work closely with technical and business teams. • This role is ideal for someone who thrives on taking initiative, leading security initiatives, and shaping secure infrastructure for large-scale environments. If you are passionate about cybersecurity, eager to make an impact, and enjoy working on cutting-edge technologies, we want to meet you.