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Added 36 mins ago
GC
Facility Preservation Engineer – Civil
Global Cellulose Fibers
Grande Prairie, AB
- Full-time
Grande Prairie’s Global Cellulose Fibers Mill is seeking a Facility Preservation Engineer. Reporting to the Maintenance Reliability Leader, the position is responsible to maintain and to…
Added 51 mins ago
EI
Technical Lead, Sustaining (CDU)
Ecolab Inc.
Calgary, AB
- Full-time
CoolIT is hiring a full-time Sustaining Technical Lead to coordinate and drive multidisciplinary sustaining engineering activities across our CDU product portfolio from production…
Added 1 hour ago
Facility Preservation Engineer – Civil
Global Cellulose Fibers
Grande Prairie, AB
Grande Prairie’s Global Cellulose Fibers Mill is seeking a Facility Preservation Engineer. Reporting to the Maintenance Reliability Leader, the position is responsible to maintain and to…
Added 1 hour ago
EC
Product and Application Engineer Opportunity (Facade Focused)
EJOT Construction Fastening Systems Inc. Canada
Toronto, ON
- Full-time
Currently, we are looking for a Product and Application Engineer (Facade Focused) to be part of EJOT Canada’s technical team. He/She will be based locally in Ontario and will support…
Added 1 hour ago
HT
Manufacturing Engineer (Contract)
Husky Technologies
Bolton, ON
- Full-time
Design mechanical components, tooling, fixtures, prototypes and manufacturing solutions by applying engineering principles, ensuring design for assembly, functionality, manufacturability,…
Added 1 hour ago
HT
Applications Engineer
Husky Technologies
Bolton, ON
- Full-time
Husky TechnologiesTM Canadian manufacturing facilities and global headquarters are located in Bolton, Ontario on a large, beautiful campus located just 20 minutes north of Toronto’s Pearson…
Added 1 hour ago
HT
PD Software for Service
Husky Technologies
Bolton, ON
- Full-time
Husky TechnologiesTM Canadian manufacturing facilities and global headquarters are located in Bolton, Ontario on a large, beautiful campus located just 20 minutes north of Toronto’s Pearson…
Added 1 hour ago
HT
PD Service - Mechanical
Husky Technologies
Bolton, ON
- Full-time
Husky TechnologiesTM Canadian manufacturing facilities and global headquarters are located in Bolton, Ontario on a large, beautiful campus located just 20 minutes north of Toronto’s Pearson…
Added 1 hour ago
HT
Product Development Engineer
Husky Technologies
Bolton, ON
- Full-time
Our Development Engineering team is looking to hire an experienced Product Development Engineer. The successful candidate will lead the technical development of packaging products working…
Added 2 hours ago
BH
Specialist Engineer - Electrical
BC Hydro
Burnaby, BC
- Temporary
BC Hydro is looking for an experienced Electrical Site Engineer to support major construction projects and ensure electrical systems are constructed and commissioned safely, correctly, and…
Added 2 hours ago
B
Electronics Engineer
BinSentry
Kitchener, ON
- Full-time
BinSentry is growing by multiples every year and we need great talent to help design and build awesome new hardware. We need someone who is excited to push the limits of technology and…
Added 2 hours ago
ST
Pilot Plant Engineer
Saltworks Technologies
Richmond, BC
- Full-time
Join our team as a Pilot Plant Engineer and play a key role in overseeing and optimizing our cutting-edge pilot-scale plants. This position offers a dynamic mix of fieldwork, factory…
Added 2 hours ago
A
Spécialiste Qualité Fournisseurs
Actalent
Mirabel, QC
- $40 to $55 CAD / hour
- Contract
We are seeking a Supplier Quality Engineer to manage a critical supplier, ensuring that commitments are met, recovery plans are driven, and supply chain risks affecting production are…
Added 2 hours ago
A
Mechanical Engineer
Actalent
Surrey, BC
- $45 to $75 CAD / hour
- Contract
We are seeking a Mechanical Engineer or experienced Mechanical Designer to support a time-sensitive reverse engineering project. You measure a machine, recreate it as a precise 3D CAD model…
Added 2 hours ago
A
Spécialiste Qualité Fournisseurs
Actalent
Mirabel, QC
- $40 to $55 CAD / hour
- Contract
We are seeking a Supplier Quality Engineer to manage a critical supplier, ensuring that commitments are met, recovery plans are driven, and supply chain risks affecting production are…
Added 2 hours ago
A
Ingénieur En Qualité/Software Quality Engineer
Actalent
Longueuil, QC
- $39 to $57 CAD / hour
- Contract
The Software Quality Engineer will join the Software Quality department supporting engine programs. This group is responsible for reviewing software delivered by internal software teams and…
Added 2 hours ago
A
Manufacturing Engineer
Actalent
Oshawa, ON
- $45 to $55 CAD / hour
- Contract
The Manufacturing Engineer plays a key role in improving dimensional quality for body and general assembly parts and subassemblies in both launch and steady-state production. This role…
Added 2 hours ago
E
Process Engineer - SMT Support
Evertz
Burlington, ON
- Full-time
The Process Engineer - SMT Support is responsible for developing, optimizing, and sustaining surface mount technology (SMT) manufacturing processes used in the production of broadcast and…
Added 2 hours ago
A
Electronics Engineer
Actalent
Calgary, AB
- $52 to $60 CAD / hour
- Full-time
…individual's contributions are recognized. As an Electronics Engineer, you will have the opportunity to make a significant impact in education, business, and beyond by developing products…
Added 2 hours ago
EI
Software Engineer
Ecolab Inc.
Calgary, AB
- Full-time
We are looking for a Software Engineer to help modernize factory operations through software, connected systems, and reliable data. You will build and improve applications that support…
Added 3 hours ago
ML
Engineering Manager
Maple Leaf Foods Inc
London, ON
- $122,000 to $172,000 CAD / year
- Part-time
The Engineering Manager is responsible for providing strategic and operational leadership for all engineering, capital projects, technical services, facility infrastructure, utilities, and…
Added 3 hours ago
Senior OT Control Systems - Engineering Specialist
Mariner
Saint John, NB
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,…
Added 3 hours ago
JI
Engineer, Mechanical
J.D. Irving, Limited
Dartmouth, NS
- Full-time
As a Mechanical Engineer, you’ll design and plan the tools, processes, and systems needed to support efficient ship construction, repair, and commissioning. You’ll work independently within…
Added 4 hours ago
ML
Project Manager
Maple Leaf Foods Inc
Winnipeg, MB
- Full-time
Reviewing plant capital for appropriateness of design, feasibility and compliance with MLF policy and coaching plant personnel on the development and execution of capital projects in…
Added 4 hours ago
ML
Reliability Engineer
Maple Leaf Foods Inc
ON · Hannon, ON
- $71,000 to $103,000 CAD / year
- Part-time
Reporting to the Reliability Manager, this position will be responsible for developing and improving manufacturing equipment and processes by the application of engineering principles with…

Mariner

Senior OT Control Systems - Engineering Specialist

Saint John, NB, Canada

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Job details

Apply by: Nov 21, 2026
Posting language: English
Posted: Sep 22, 2026

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 while collaborating with cross-functional teams to support operational objectives.

Requirements

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

Skills

Operational Technology
Industrial Automation
Process Control
DCS
PLC
SCADA
HMI
Safety Instrumented Systems
Industrial Networking
Cybersecurity
System Lifecycle Management
Honeywell Experion PKS
Rockwell Automation
VMware
Windows Server
Troubleshooting

Benefits

Training and development
Competitive compensation
Inclusive culture

Visa sponsorship

Not detected in the job text

Keywords

Operational Technology
Industrial Automation
Process Control
DCS
PLC
SCADA
HMI
Safety Instrumented Systems
Industrial Networking
Cybersecurity
Honeywell Experion PKS
Rockwell Automation
Studio 5000
FactoryTalk View
Cisco
Active Directory
Windows Server
VMware
Emerson AMS
Bently Nevada
Prognost
Asset Monitoring
Lifecycle Management
Commissioning
Process Safety
Change Management
Refining
Petrochemical
Energy
Manufacturing

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