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SGS

OT Specialist - Intermediate/Senior

Calgary, AB, Canada

Job type: Full-time
Apply by: Mar 24, 2027
Experience: 5+ years of hands-on experience in OT infrastructure, industrial networking, or ICS environments within oil and gas or critical infrastructure.
Posting language: English
Posted: Sep 25, 2026

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Original job description

We are SGS – the world’s leading testing, inspection and certification company. We are recognized as the global benchmark for quality and integrity. Our 98,000 employees operate a network of 2,650 offices and laboratories, working together to enable a better, safer and more interconnected world.

Job Description

Streamline Control Solutions, part of SGS - the world’s leading testing, inspection, and certification company operating across 115 countries - is a leading operational technology solutions provider specializing in industrial automation, SCADA, data historians, and analytics for the energy sector. We work with major oil and gas producers across North America, helping them modernize critical infrastructure and unlock value from their operational data.

Streamline Control is looking for a proven OT Specialist to take ownership of industrial infrastructure and cybersecurity across our oil and gas operations. You will lead the design, implementation, and ongoing management of OT networks, remote communications, virtualisation platforms, and security tooling - ensuring high availability and compliance across all operational sites.

This role carries technical leadership responsibilities. You will mentor junior team members, drive standards, and act as a subject matter expert during projects, audits, and incident response.

OT Network Architecture

Design and maintain OT network architectures in accordance with the Purdue Model, including DMZ configuration and inter-level segmentation.
Implement and manage high-availability topologies - ring protocols (MRP, PRP, HSR), failover mechanisms, and redundant paths for critical process networks.
Lead network assessments, capacity planning, and performance optimisation across plant and field networks.

Remote Communications

Own the deployment and lifecycle management of VSAT, radio, and cellular (4G/5G) communication systems at remote and offshore sites.
Optimise link performance, QoS, and bandwidth allocation to ensure reliable SCADA and safety-critical traffic delivery.
Manage vendor relationships and service agreements for satellite and telecommunications providers.

Virtualisation and Systems

Manage Hyper-V and ESXi environments including cluster operations, VM lifecycle, storage integration, and disaster recovery.
Lead computer system design activities - hardware specification, architecture documentation, FAT/SAT, and commissioning.
Drive patching strategies and firmware lifecycle management within change control frameworks.

Cybersecurity

Implement and enforce OT cybersecurity standards (IEC 62443, NIST 800-82) across all infrastructure.
Deploy and administer security tooling - preferably Claroty (CTD, xDome) and Cyolo for zero-trust remote access.
Coordinate security audits, vulnerability assessments, and incident response for OT environments.

Leadership and Mentoring

Mentor and develop junior OT specialists, providing technical guidance and knowledge transfer.
Author and maintain technical standards, SOPs, and runbooks for OT infrastructure operations.
Represent OT during cross-functional projects, capital planning, and management reviews.

Qualifications

ESSENTIAL REQUIREMENTS

5+ years of hands-on experience in OT infrastructure, industrial networking, or ICS environments within oil and gas or critical infrastructure.
Strong practical knowledge of the Purdue Model and high-availability industrial network design.
Proven experience with VSAT, radio, and cellular communications in remote or offshore settings.
Solid Hyper-V and/or ESXi administration skills in operational environments.
Working knowledge of OT cybersecurity standards (IEC 62443, NIST 800-82).
Degree or diploma in a relevant technical discipline, or equivalent demonstrated experience.

PREFERRED QUALIFICATIONS

CISSP, GICSP, or equivalent cybersecurity certification.
Experience with Claroty and/or Cyolo platforms.
Networking certifications (CCNA/CCNP, Hirschmann HNAP) or virtualisation certifications (VCP, MCSE).
Computer system design experience including hardware specification and lifecycle management.
Familiarity with industrial protocols (Modbus, OPC UA, PROFINET, EtherNet/IP) and SIS requirements (IEC 61511).

CORE COMPETENCIES

Strong troubleshooting under pressure with methodical problem-solving skills.
Clear communicator - able to translate technical concepts for operations and management audiences.
Self-directed, comfortable leading work at remote and offshore sites.
Collaborative across OT, IT, engineering, and operations teams.

WORKING CONDITIONS

Travel to onshore plants, offshore platforms, and remote facilities.
On-call participation for OT infrastructure and security incidents.
Work in hazardous industrial environments with PPE and permit-to-work requirements.
Flexibility for shift patterns during shutdowns, turnarounds, and commissioning.

AT A GLANCE

Preferred: CISSP / GICSP | Claroty / Cyolo | CCNA / CCNP | Computer System Design | Industrial Protocols

Additional Information

SGS is an Equal Opportunity Employer, and as such we recruit, hire, train, and promote persons in all job classifications without regard to race, color, religion, sex, national origin, disability, age, marital status, sexual orientation, gender identity or expression and Indigenous status, or any other characteristics protected by law.

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily with or without reasonable accommodations. The requirements listed above are representative of the knowledge, skills, and/or abilities required.

This job description should not be construed as an exhaustive statement of duties, responsibilities, or requirements, but a general description of the job. Nothing contained herein restricts the company's rights to assign or reassign duties and responsibilities to this job at any time.

Accommodations are available on request for qualified candidates during each stage of the recruitment process.

Please note that candidates applying for Canadian job openings should be authorized to work in Canada.

#IND

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More about this job

Responsibilities

Design, implement, and manage OT networks, remote communications, virtualization platforms, and cybersecurity systems to maintain availability and compliance across oil and gas operational sites. Provide technical leadership by mentoring junior specialists, establishing standards and procedures, and representing OT in projects, audits, and incident response.

Requirements

Requires at least five years of hands-on OT infrastructure, industrial networking, or ICS experience in oil and gas or critical infrastructure, along with knowledge of the Purdue Model, high-availability networks, remote communications, virtualization, and OT cybersecurity standards. A relevant technical degree or diploma, or equivalent experience, is required; cybersecurity, networking, virtualization, and industrial systems certifications or platform experience are preferred.

Skills

OT Network Architecture
Purdue Model
Industrial Networking
High-Availability Networks
VSAT, Radio, and Cellular Communications
Hyper-V
VMware ESXi
OT Cybersecurity
IEC 62443
NIST 800-82
Claroty
Cyolo
SCADA
Virtualization
Incident Response
Technical Leadership and Mentoring

Visa sponsorship

Not detected in the job text

Keywords

Operational Technology
Industrial Control Systems
Oil and Gas
Purdue Model
OT Network Architecture
DMZ
Network Segmentation
MRP
PRP
HSR
VSAT
Radio Communications
4G/5G
SCADA
Hyper-V
VMware ESXi
IEC 62443
NIST 800-82
Claroty CTD
Claroty xDome
Cyolo
CISSP
GICSP
CCNA
CCNP
Hirschmann HNAP
VCP
MCSE
Modbus
OPC UA

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