Senior Cybersecurity Engineer

Lightera; Curitiba; Híbrido; BRL 180 000 - 240 000; Tempo integral

Resumo da oferta

Lightera is seeking a Senior Cybersecurity Engineer to strengthen our security program across IT and OT-adjacent systems in a hybrid model. You will lead incident response, vulnerability management, and tooling administration while collaborating with infrastructure and development teams to reduce risk and protect critical assets.

Ideal candidates have strong cyber operations experience, cloud and OT exposure, and advanced English skills for global collaboration in a fast-paced environment.

Qualificações

• Strong experience in Cybersecurity Operations / Incident Response.
• Hands-on expertise with SIEM, EDR, networking, and Windows/Linux.
• Experience in complex and critical environments.
• Knowledge of cloud environments (AWS).
• Exposure to OT environments is a strong plus.
• Advanced English skills for global collaboration.

Responsabilidades

• Incident Response & Security Operations across enterprise environment.
• Lead triage, classification, containment, eradication and recovery with documentation.
• Perform digital forensics: memory/disk analysis, logs, timeline reconstruction.
• Monitor SIEM/EDR and network monitoring; produce incident reports.
• Develop incident response playbooks and procedures.
• Vulnerability management: scan coordination, risk-based prioritization.

Conhecimentos

Cybersecurity Operations

Incident Response

Autonomous

Analytical

Ferramentas

SIEM

EDR (SentinelOne)

Networking

Windows

Linux

Descrição da oferta de emprego

Lightera is more than a name, it is a commitment to creating brighter connections that shape the future.

The name Lightera combines the words light and era, symbolizing a new chapter illuminated by the transformative power of light. It reflects our roots in fiber optic technology and our vision to lead the way toward a brighter, more connected future.

At Lightera, we empower our employees to grow, innovate, and make a meaningful impact on the world. We foster a supportive, dynamic, and inclusive workplace where people can thrive, collaborate, and drive meaningful change.

We are committed to attracting and retaining the industry's top talent. If you are looking for a rewarding career with opportunities to learn, lead, and contribute to cutting-edge innovation, we invite you to explore our open positions.

Position: Senior Cybersecurity Engineer

Work Model: Hybrid (3 days on-site, 2 days remote)

Responsibilities:

Incident Response & Security Operations

• Serve as the primary technical responder for security incidents across the enterprise environment, including IT and OT-adjacent systems.
• Lead triage, classification, and prioritization of security incidents; execute containment, eradication, and recovery actions with full documentation.
• Perform intermediate to advanced digital forensics - artifact collection, memory and disk analysis, log correlation, timeline reconstruction, and chain of custody handling.
• Monitor, analyze, and investigate alerts and events across SIEM, EDR (e.g., SentinelOne), and network monitoring platforms.
• Produce detailed technical incident reports and contribute to executive-level post-incident summaries.
• Develop and maintain incident response playbooks and response procedures.

Vulnerability Management

• Own the vulnerability management lifecycle: coordinate scanning, track findings, drive prioritization based on risk and asset criticality, and follow up with infrastructure and application teams on remediation.
• Monitor for emerging threats and newly disclosed vulnerabilities; assess applicability to the environment and communicate urgency to relevant stakeholders.

Security Program Contribution

• Support the definition and enforcement of security controls across infrastructure, endpoints, identity, and cloud environments.
• Participate in the administration and optimization of security tooling (SIEM, EDR, endpoint management, vulnerability scanners).
• Contribute to the development and maintenance of security documentation, standards, and operational procedures.
• Work alongside infrastructure, network, and software development teams on security requirements for projects and changes.
• Contribute to security awareness activities and foster a security-conscious organizational culture.

Qualifications

• Strong experience in Cybersecurity Operations / Incident Response
• Hands-on expertise with SIEM, EDR (SentinelOne), networking, and operating systems (Windows/Linux)
• Experience in complex and critical environments
• Knowledge of cloud environments (AWS)
• Exposure to industrial or OT environments is a strong plus
• Advanced English skills, with the ability to interact in a global environment
• Autonomous, analytical, and comfortable working in high-pressure scenarios