Senior Consultant for ICS/OT

Wherever our customers are in the world, we help them digitalise and optimise their remote business processes using advanced hybrid network solutions and digital technologies. At Marlink, we empower our customers worldwide by helping them digitalize and optimize their remote operations through advanced hybrid network solutions and cutting-edge digital technologies. Our teams operate globally, harnessing innovation, expertise, and applied technology to connect systems and people, driving success in today’s digital-first world. With 1,500 employees in over 30 countries, and customers in the maritime, energy, and government sectors, we push boundaries to deliver excellence. 

We are looking for Senior Consultant for ICS/OT solutions who will be supporting clients in improving the security, resilience, and governance of industrial and operational technology environments by combining strong OT/ICS understanding with developing cybersecurity expertise. The role translates operational realities, safety requirements, and plant constraints into practical and risk-based cybersecurity improvements without compromising availability, reliability, or safety.

Key responsibilities:

• Assess industrial environments, control system architectures, process dependencies, and operational constraints across OT/ICS environments.
• Support the design and review of OT network architectures, including segmentation, trust zones, conduits, and separation between enterprise, DMZ, and control layers.
• Build and validate OT asset inventories, system ownership, process criticality, dependencies, and architecture documentation.
• Conduct site visits, workshops, interviews, walkthroughs, and evidence collection to validate how systems operate in practice.
• Contribute to risk assessments by identifying threats, consequences, likely attack paths, and operational impacts across cyber-physical environments.
• Support the integration of cybersecurity requirements into new projects, plant modifications, and technology changes.
• Help define practical controls for remote access, privileged access, vendor access, monitoring, hardening, and exposure reduction.
• Translate operational and engineering realities into actionable cybersecurity requirements, standards, procedures, and remediation plans.
• Map client environments against IEC 62443, NIST, ISO 27001, NIS2, and sector-specific requirements, with guidance from senior cyber specialists where needed.
• Prepare clear reports, architecture inputs, findings summaries, and recommendations for both technical teams and management stakeholders.
• Work closely with engineering, operations, IT, security, and project teams to align security measures with safety, operability, and maintenance requirements.

• Solid experience in OT/ICS environments such as industrial operations, automation, control systems, marine systems, energy, utilities, manufacturing, or other critical infrastructure.
• Good understanding of ICS lifecycle, safety and availability priorities, operational constraints, and change management practices.
• Experience with industrial architectures, field-to-control-layer communications, and the practical realities of plant operations.
• Familiarity with industrial protocols, system interfaces, control networks, and dependencies between operational systems.
• Working knowledge of networking fundamentals such as routing, switching, VLANs, firewalls, DNS, DHCP, and remote access concepts.
• Exposure to cybersecurity principles such as defense in depth, access control, logging, hardening, monitoring, and risk-based remediation.
• Interest and ability to build stronger knowledge in cybersecurity governance, monitoring, incident response, and OT security architecture.
• Experience producing technical documentation, diagrams, inventories, workshop outputs, and assessment findings.
• Bachelor’s degree in engineering, automation, electrical engineering, computer science, or a related discipline is preferred.
• Relevant OT, engineering, networking, or cybersecurity certifications are an advantage.
• Fluent in English, written and spoken. 

Soft skills: 

• Strong ability to build trust with operational and engineering stakeholders.
• Prepared to undertake regular travel - both domestic and international - to support client engagements.
• Pragmatic mindset with sensitivity to safety, uptime, and operational realities.
• Clear communicator who can explain technical issues in a structured and practical way.
• Strong workshop, interview, and discovery facilitation skills.
• Good analytical thinking and ability to turn incomplete information into clear findings and decisions.
• Collaborative and professional approach across multidisciplinary teams.
• High sense of ownership, reliability, and follow-through on commitments.
• Willingness to learn cybersecurity topics in depth and grow into a broader OT cyber consulting role.

What we offer: 

• Growth in an open-minded culture with very little hierarchical macrostructure.
• Continuous development and advancement through industry-relevant certifications and internal/external training/workshops.
• Challenging local and global projects involving current solutions.
• Learning and sharing experiences with well-known and respected experts in the field of information/cybersecurity.
• Positive, motivating, international work environment.
• Hybrid work – office work + possibility of working from home by agreement.
• Flexible working hours.
• Additional and supplementary health insurance packages.
• Monthly fee for transportation and hot meal. 
• Multisport membership.
• Pet-friendly office.
• Social events and team bonding gatherings.