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Added 11 hours ago
BT
Full-Stack Developer (1-Year Contract)
Baker Tilly Canada
Vancouver, BC
- Contract
Baker Tilly is a leading advisory and accounting firm dedicated to building better futures. With global reach and local roots, we combine the scale of a network with the trust of strong…
Added 19 hours ago
Engineering - Automotive HVAC Product Engineer
Crestline
Saskatoon, SK
We’re looking for an Automotive HVAC Product Engineer to join our Engineering team in Saskatoon. This role will serve as Crestline’s subject-matter specialist for automotive HVAC systems…
Added 1 day ago
BT
Full-Stack Developer (1-Year Contract)
Baker Tilly Canada
Vancouver, BC
- Contract
Baker Tilly is a leading advisory and accounting firm dedicated to building better futures. With global reach and local roots, we combine the scale of a network with the trust of strong…
Added 1 day ago
AA
Spécialiste en ingénierie de la sécurité des commandes de vol/Flight Controls Safety Engineering Specialist
Airbus Aircraft
Montreal, QC
- Full-time
Do you have systems engineering experience, have you worked in aircraft systems Safety and Reliability engineering and would you like to progress and develop new skills? Then this job is…
Added 1 day ago
AA
Spécialiste de la Sécurité au niveau avion / Aircraft Safety Specialist
Airbus Aircraft
Montreal, QC
- Full-time
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Added 1 day ago
S
Spécialiste en applications ERP / ERP Application Specialist
Smardt
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- Full-time
Added 1 day ago
BT
Full-Stack Developer (1-Year Contract)
Baker Tilly Canada
Vancouver, BC
- Contract
Baker Tilly is a leading advisory and accounting firm dedicated to building better futures. With global reach and local roots, we combine the scale of a network with the trust of strong…
Added 1 day ago
ML
MRO Coordinator
Maple Leaf Foods Inc
ON · Hannon, ON
- $47,000 to $69,000 CAD / year
- Part-time
Collaborate with Maintenance, Reliability, and Operations, Six Sigma and Engineering
Added 1 day ago
Senior OT Control Systems - Engineering Specialist
Mariner
Saint John, NB
…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…
Added 2 days ago
M
AI GTM and Automation Specialist
Maplesoft
Waterloo, ON
- Full-time
We are looking for a hands-on, technically curious AI GTM & Automation Specialist to improve how we generate, identify, engage and convert prospects using AI, automation and data.
Added 2 days ago
DC
Technical Specialist, Real Property Management
Defence Construction Canada
Ottawa, ON
- Full-time
DCC is responsible for the Personnel Security Clearance process . Typically to be eligible for a "Reliability" clearance, you must have five years of verifiable background information and…
Added 2 days ago
DC
Technical Specialist, Project Management
Defence Construction Canada
Ottawa, ON
- Full-time
DCC is responsible for the Personnel Security Clearance process . Typically to be eligible for a "Reliability" clearance, you must have five years of verifiable background information and…
Added 2 days ago
DC
Technical Specialist, Real Property Management
Defence Construction Canada
Ottawa, ON
- Full-time
DCC is responsible for the Personnel Security Clearance process . Typically to be eligible for a "Reliability" clearance, you must have five years of verifiable background information and…
Added 2 days ago
TE
Category Specialist – Turbomachinery
TC Energy
Calgary, AB
- Full-time
Working with Project teams, Business Units, Fleet Specialists, Engineering, Legal and suppliers, this role aligns equipment procurement with long-term maintenance, capital spares and…
Added 2 days ago
ML
Automation Specialist
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Winnipeg, MB
- Full-time
The Automation Specialist position at our Lagimodiere facility is part of an automation team responsible for troubleshooting, servicing and maintaining automated industrial controls and…
Added 2 days ago
AI
Ping Identity / ForgeRock Engineer
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Montreal, QC
- Full-time
We are hiring for a Senior Identity and Reliability Engineering Specialist with responsibility for Identity lifecycle management and directory services. This includes products managing…
Added 2 days ago
K
Senior Mechanical Engineer - Rotating Equipment
Kent
Calgary, AB
- Full-time
Coordinate equipment interfaces with process, piping, civil, structural, instrumentation, and electrical engineering disciplines.
Added 2 days ago
C&
Technical Services Specialist
Communications & Power Industries (CPI)
Georgetown, ON
- $64,000 to $84,000 CAD / year
- Full-time
We are currently seeking a technically skilled and customer-focused Technical Services Specialist to join our team. This is a new position within the team. Reporting to the Vice President,…
Added 2 days ago
K
Senior Mechanical Engineer - Rotating Equipment
Kent
Calgary, AB
- Full-time
Coordinate equipment interfaces with process, piping, civil, structural, instrumentation, and electrical engineering disciplines.
Added 2 days ago
SA
Reliability Applications Specialist
Spartakus APM
Kirkland, QC
- Full-time
As our Reliability Applications Specialist, you will work directly with customers to help them get real results from Spartakus APM and LubeIT. You will meet with customers regularly, review…
Added 2 days ago
A
Spécialiste de la Sécurité au niveau avion / Aircraft Safety Specialist
Airbus
Mirabel, QC · Montreal, QC
- Full-time
Do you have systems engineering experience, have you worked in aircraft systems Safety and Reliability engineering and would you like to progress and develop new skills? Then this job is…
Added 2 days ago
A
Spécialiste en ingénierie de la sécurité des commandes de vol/Flight Controls Safety Engineering Specialist
Airbus
Mirabel, QC · Montreal, QC
- Full-time
Do you have systems engineering experience, have you worked in aircraft systems Safety and Reliability engineering and would you like to progress and develop new skills? Then this job is…
Added 2 days ago
LD
Quality Specialist
Leonardo DRS
Bedford, NS
- Full-time
Reporting directly to the Manager-Quality, the Quality Specialist – Quality Systems coordinates the internal audit program, facilitates the organization-wide corrective action process, and…
Added 2 days ago
Data Center Asset Management, Specialist
Bell
Regina, SK
Bell is seeking an experienced Asset Management Specialist – Data Center Infrastructure – to lead the asset lifecycle governance for its national portfolio of data centers. Reporting to the…
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Senior Specialist, Subcontracts Management
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Must be eligible to obtain and maintain a government of Canada Reliability status and Secret Level 2/NATO Secret security clearance;

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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