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Added 14 mins ago
Project Manager
WSP in Canada
SK · Saskatchewan, Canada
Full-time
…Project Manager, you’ll take ownership of complex, meaningful projects supported by senior leaders and multidisciplinary technical experts. This is your opportunity to deepen your delivery…
Added 14 mins ago
Project Manager
WSP in Canada
Saskatoon, SK
Full-time
…Project Manager, you’ll take ownership of complex, meaningful projects supported by senior leaders and multidisciplinary technical experts. This is your opportunity to deepen your delivery…
Added 14 mins ago
Environmental Field Technician
WSP in Canada
Ottawa, ON
Full-time
With an unmatched breadth and depth of engineering, advisory and science based expertise, our global minds unite to power local solutions.
Added 14 mins ago
Project Manager
WSP in Canada
Regina, SK
Full-time
…Project Manager, you’ll take ownership of complex, meaningful projects supported by senior leaders and multidisciplinary technical experts. This is your opportunity to deepen your delivery…
Added 14 mins ago
Senior Engineer, Systems (13683)
Toronto Transit Commission (TTC)
Toronto, ON · Greater Toronto Area, Canada
$115,570 to $144,526.2 CAD / year
Full-time
Looking for a new and exciting job opportunity? We're hiring a Senior Systems Engineer to join our Chief Vehicles Office! In this role, you will be responsible for managing the activities…
Added 14 mins ago
Associate Director, Alumni Engagement
McMaster University
Hamilton, ON
Full-time
…partners. From pioneering discoveries in health sciences and engineering to advancing social innovation and community wellbeing, McMaster's impact extends far beyond our…
Added 14 mins ago
Project Manager
WSP in Canada
Winnipeg, MB
Full-time
…Project Manager, you’ll take ownership of complex, meaningful projects supported by senior leaders and multidisciplinary technical experts. This is your opportunity to deepen your delivery…
Added 14 mins ago
Project Manager
WSP in Canada
AB · Edmonton, AB
Full-time
…Project Manager, you’ll take ownership of complex, meaningful projects supported by senior leaders and multidisciplinary technical experts. This is your opportunity to deepen your delivery…
Added 14 mins ago
Project Manager
WSP in Canada
Calgary, AB
Full-time
…Project Manager, you’ll take ownership of complex, meaningful projects supported by senior leaders and multidisciplinary technical experts. This is your opportunity to deepen your delivery…
Added 15 mins ago
Instrumentation & Control Engineer, Senior - Nuclear, Bowmanville EOI
Hatch
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Are you looking to take the next step in your career? Hatch is currently seeking a highly motivated Senior Instrumentation and Control (I&C) Engineer – Nuclear to join our team in…
Added 15 mins ago
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Richmond Hill, ON · Canada - Ontario - Richmond Hill
Full-time
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Added 15 mins ago
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Full-time
Stantec Planning and Landscape Architecture Group is seeking an experienced Senior Landscape Architect to join our Ottawa team and assist on projects. Our location in the National Capital…
Added 15 mins ago
Quality Inspector / Coordinator
EBC Inc.
Toronto, ON · North York (York Mills West), Ontario
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Added 45 mins ago
Senior Project Manager
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Canada
Full-time
We are seeking an experienced Senior Project Manager with a strong background in mining to lead multidisciplinary engineering teams in delivering capital mining and mineral processing…
Added 45 mins ago
Senior Engineer, Process Maintenance
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$115,000 to $145,000 CAD / year
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Added 45 mins ago
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Added 46 mins ago
Network Analyst, Senior
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Toronto, ON
$81,431 to $103,825 CAD / year
Join us as a Senior Network Analyst and play a key role in designing, securing, and optimizing a modern enterprise network environment. You'll work with leading technologies across…
Added 46 mins ago
Principal, Energy and Carbon Solutions
WF Group Inc.
Kitchener, ON
…our ECS (Energy and Carbon Solutions) team. The role provides senior technical and practice leadership for ECS work, with accountability for the quality, consistency, and commercial…
Added 1 hour ago
Development Coordinator (Toronto)
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Toronto, ON
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…execution of industrial, commercial, and institutional development projects from due diligence through construction and…
Added 1 hour ago
Senior Engineer, Process Maintenance
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Sparwood, BC
$115,000 to $145,000 CAD / year
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Added 1 hour ago
Senior Piping Designer
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Sarnia, ON
$65 CAD / hour
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Added 1 hour ago
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…management company. With over 20 years of experience amongst the senior management, Pearl Builders deliveries a wide variety of projects. We manage projects from construction to property…
Added 1 hour ago
Senior Environmental Professional
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Senior Advisor, HSWE - Governance and Management Systems
Belron
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Added 1 hour ago
Senior Rail Transportation Planner
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Mariner Innovations

Senior OT Control Systems - Engineering Specialist

Saint John, NB, Canada

Job type: Full-time
Apply by: Oct 23, 2026
Posting language: English
Posted: Sep 23, 2026

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Original job description

Who We Are

Mariner innovates always and everywhere, turning novel ideas into practical solutions. From products and services to venture creation, we build better futures powered by people. Our purpose has always been to be a great, everlasting technology company for those who make an impact - elevating people, data, and technology in the best way to solve hard problems. We partner with people embracing change, leveraging data, cybersecurity, cloud, and change management to drive successful business outcomes that matter to our customers.

Mariners build for change. Like SHIFT Energy, our energy management and decarbonization company. Or East Valley Ventures, created to scale social economic impact in our communities through investment and mentorship of emerging change-makers and their companies.

Mariner’s Purpose Has Always Been To Be a Great, Everlasting Technology Company And The Core Values That Guide Us Every Day Are

OUR VALUES

We care for our team.
We care about the impact we have on our community.
We serve by solving complex problems.
We grow because growth fuels opportunities.
We innovate always and everywhere.
We build a business that lasts.

OVERVIEW OF THE ROLE: We are seeking a Senior OT Control Systems Engineer to join a critical industrial operations environment in Saint John, New Brunswick. In this role, you will be responsible for the design, support, optimization, and security of Operational Technology (OT) and industrial automation systems that enable safe and reliable operations. The successful candidate will bring extensive experience in process control, industrial networking, distributed control systems, and automation technologies within complex industrial settings such as refining, manufacturing, utilities, or other process-driven environments.

This is an on-site position in Saint John, NB.

What You’ll Be Doing In The Role

Lead the design, implementation, and enhancement of OT and industrial control system solutions to support operational and business objectives.
Configure, maintain, and troubleshoot automation systems, including DCS, PLC, HMI, SIS, and asset monitoring platforms.
Develop and maintain control strategies, system configurations, and automation standards to improve performance, reliability, and safety.
Design and support industrial networks, ensuring high availability, cybersecurity compliance, and secure system integration.
Plan and execute system upgrades, patching, lifecycle management activities, and technology modernization initiatives.
Monitor system health, investigate operational issues, and provide advanced troubleshooting support for critical automation infrastructure.
Lead commissioning, startup, testing, and validation activities for new and modified control systems.
Collaborate with operations, engineering, maintenance, cybersecurity, and external vendors to deliver reliable and secure automation solutions.
Support process safety initiatives, risk assessments, and change management activities while maintaining technical documentation and procedures.

WHAT SKILLS / QUALIFICATIONS YOU’LL NEED TO DO THE JOB:

Required Experience

15+ years of experience supporting Operational Technology (OT), industrial automation, or process control environments, including significant experience in heavy industrial operations.
Strong expertise with industrial control technologies, including DCS, PLC, SCADA, HMI, Safety Instrumented Systems (SIS), and industrial networking platforms.
Hands-on experience with OT infrastructure, cybersecurity practices, network architecture, and system lifecycle management.
Proven experience troubleshooting, maintaining, and optimizing complex automation and control environments.
Previous experience in refining, petrochemical, energy, utilities, manufacturing, or other process-intensive industries is highly desirable.

Technical Expertise

Honeywell Experion PKS, TPS/TDC, Safety Manager, and HMI Web.
Rockwell Automation platforms, including Studio 5000 and FactoryTalk View.
Industrial Ethernet, Cisco networking, firewalls, and OT cybersecurity solutions.
Active Directory, Windows Server environments, VMware, and related OT infrastructure technologies.
Asset monitoring and reliability systems such as Emerson AMS, Bently Nevada, CCC, and Prognost.

Education & Certifications

Degree or diploma in Electrical Engineering, Electrical/Electronics Technology, Industrial Automation, Instrumentation & Controls, or a related field.
Professional engineering designation, engineering technologist certification, or relevant industry certifications are considered assets.
Certifications in Honeywell technologies, Cisco networking, OT/ICS cybersecurity, instrumentation, or electrical disciplines are highly regarded

Core Competencies & Skills

Demonstrated ability to excel in a dynamic, operationally driven environment while maintaining a high level of accuracy and attention to detail.
Strong organizational and time management skills, with the ability to effectively prioritize competing demands.
Excellent communication and interpersonal skills, supported by strong analytical capabilities and sound technical judgment.
Adaptable and responsive, with the ability to quickly adjust priorities based on operational requirements and business needs.
Self-motivated professional who can work independently while contributing effectively within cross-functional and collaborative teams.
Proven problem-solving, troubleshooting, and critical-thinking abilities in complex technical environments.
Strong hands-on technical expertise in industrial networking, network infrastructure, control systems hardware, panel design, installation, maintenance, and repair.
Commitment to operational excellence, continuous improvement, and the delivery of reliable, secure, and high-performing automation solutions.

WHY MARINER?

We believe in making a positive impact in the communities where we live and work! Not only are we passionate about nurturing a thriving technology sector here in Atlantic Canada, but we are also committed to solving technology challenges that will make an impact worldwide. Technology is everlasting, and we take pride in connecting world class talent to world class projects and business solutions.

If you are an IT Professional, Software Professional, or Management Consultant, that is passionate about career development, data, and problem solving, we want to hear from you! If this sounds like someone you know, share this with them so they do not miss the opportunity to experience Mariner!

To achieve this, we know we need to be all in on training and development of our team so we can continue to move the needle in the technology sector together. Of course, we offer competitive compensation and benefits packages to our team, but our competitive edge is the development and training that our team experiences every day.

Be part of our vibrant community that values diversity and embraces inclusion at every level. We are committed to fostering a culture where individuals from all backgrounds and walks of life feel empowered to contribute their unique perspectives. Our collaborative environment celebrates the richness of ideas and experiences, and we believe that by embracing diversity, we can achieve greater innovation and excellence together. Come and help us create a workplace that reflects the beautiful tapestry of our global community.

Join our growing team!

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More about this job

Responsibilities

The Senior OT Control Systems Engineer will lead the design, implementation, and optimization of industrial automation and control systems. They are responsible for ensuring the security, reliability, and performance of OT infrastructure within complex industrial environments.

Requirements

Candidates must have 15+ years of experience in OT, industrial automation, or process control environments. A degree or diploma in a relevant engineering or technical field is required, along with deep expertise in DCS, PLC, and industrial networking.

Skills

OT Control Systems
Industrial Automation
DCS
PLC
SCADA
HMI
Safety Instrumented Systems
Industrial Networking
Cybersecurity
Honeywell Experion PKS
Rockwell Automation
System Lifecycle Management
Process Control
Troubleshooting
Commissioning
Asset Monitoring

Benefits

Competitive compensation
Training and development
Career development

Visa sponsorship

Not detected in the job text

Keywords

OT
Industrial Automation
DCS
PLC
SCADA
HMI
SIS
Industrial Networking
Cybersecurity
Honeywell Experion PKS
Rockwell Automation
Studio 5000
FactoryTalk View
Cisco
VMware
Emerson AMS
Bently Nevada
Process Control
Lifecycle Management
Instrumentation
Electrical Engineering
Refining
Petrochemical
Energy
Manufacturing
Utilities
System Integration
Commissioning
Change Management
Operational Technology

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