Senior/Mid-level MSS Analyst – OT/ICS Security

SEK Security Ecosystem Knowledge

Analista de MSS Sr/Pleno em cibersegurança com foco em ambientes industriais. Responsável pela operação de monitoramento e resposta gerenciada para clientes de alta criticidade.

Posted 7/1/2026full-timeRemote • 🇧🇷 BrazilSeniorWebsite

Tech Stack

Tools & technologies

LinuxSwitchingTCP/IP

About the role

Key responsibilities & impact

Dedicated to the operation of monitoring and managed response (MSS/MDR)
Monitor, triage, and investigate alerts and incidents in OT/ICS environments
Conduct root cause analyses for events involving PLCs, HMIs, and RTUs
Correlate OT events with IT telemetry
Support the Detection Engineering team in building and refining use cases
Maintain and evolve clients' OT asset inventories
Participate in OT vulnerability management cycles
Serve as the technical point of contact in meetings with industrial clients
Produce technical and executive reports on investigations conducted

Requirements

What you’ll need

Proven experience in industrial environments (plant, utilities, oil & gas, manufacturing, energy, water/wastewater or similar)
Solid understanding of SCADA/DCS architectures, the Purdue model, zone and conduit segmentation (IEC 62443), and IT/OT convergence
Hands-on knowledge of PLCs, HMIs, historians, engineering workstations, and industrial protocols
Strong fundamentals in computer networks: TCP/IP, OSI model, routing, switching, VLANs, firewalls, NAT, packet capture and traffic analysis
Understanding of behavioral and requirement differences between OT traffic and traditional IT traffic
Previous experience in SOC, NOC, CSIRT, incident response teams, or equivalent roles
Fundamentals of Windows and Linux operating systems
Technical English for reading documentation, advisories, and communicating with vendors/manufacturers

Benefits

Comp & perks

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Hard Skills & Tools

Incident ResponseRoot Cause AnalysisOT Vulnerability ManagementTraffic AnalysisPacket CapturePLC KnowledgeHMI KnowledgeSCADA KnowledgeWindows Operating SystemLinux Operating System

Soft Skills

Technical CommunicationClient Engagement