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Added 5 hours ago
B
Tenant Services Coordinator
BGIS
Toronto, ON
- Full-time
BGIS is a leading provider of customized facility management and real estate services. With a combined team of over 10,000 professionals worldwide, we relentlessly focus on enabling…
Added 10 hours ago
PH
Analytics Engineer, Risk
Propel Holdings
Toronto, ON
- Full-time
Exposure to Docker, containerization, and cloud infrastructure such as AWS, S3, EKS, or similar services (nice-to-have)
Added 10 hours ago
M
Senior Software Engineer - Credit Commercial Engineering
Marqeta
Remote, Canada
- Full-time
- Remote
Develop the software and infrastructure to achieve repeatable and efficient high-quality releases with automation, seeking opportunities to replace redundant tasks and enhance engineering…
Added 10 hours ago
CO
Application & Integration Technical Analyst
City of Saint John
Saint John, NB
- Full-time
Under the direction of the designated IT Manager, the Application and Integration Technical Analyst is a technical lead responsible for system architecture, data strategy, and integration…
Added 11 hours ago
ST
Senior IT Systems Specialist
Saltworks Technologies
Richmond, BC
- $110,000 to $140,000 CAD / year
- Full-time
Saltworks Technologies has an immediate opening for a Senior IT Systems Specialist. You will own our technology infrastructure, from on-premises servers and cloud platforms to enterprise…
Added 12 hours ago
Senior OT Control Systems - Engineering Specialist
Mariner
Saint John, NB
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…
Added 13 hours ago
FC
Administrateur système et réseau
FOP Consultants
Quebec, QC
- Full-time
The Windows and Azure Systems Administrator supports our client’s technology infrastructure. Specialized in Windows Server and Microsoft Azure environments, the administrator manages…
Added 13 hours ago
LI
Middleware Specialist
Lotus IT Solutions
Toronto, ON
- Contract
The Government Services Integration Cluster, under the Ministry of Public and Business Service Delivery and Procurement, is seeking a Senior Middleware Specialist for a fully onsite…
Added 14 hours ago
M
Senior Data Center Technician
Microsoft
Quebec, QC
- $73,200 to $119,600 CAD / year
- Full-time
Microsoft’s Cloud Operations & Innovation (CO+I) is the engine that powers our cloud services. As a CO+I DCT, you will perform a key role in delivering the core infrastructure and…
Added 15 hours ago
BD
Senior DevOps Engineer - Cloud Operations
Black Duck
Calgary, AB
- Full-time
Staff. DevOps Engineer will be a key player on the Cloud Operations team responsible for all SaaS and Hosted services across the company's product portfolio. They will proactively work with…
Added 17 hours ago
MC
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Myticas Consulting
Toronto, ON
- Full-time
Manager – Banking Cloud & Platform Engineering
Added 17 hours ago
AI
Adobe Site Reliability Engineer - Content Delivery Network
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Toronto, ON
- Full-time
Own end-to-end monitoring of the controlled surface: CDN and edge configuration, DNS, certificates, cache and invalidation health, and every third-party integration on the page – Search,…
Added 17 hours ago
WI
Lifecycle Asset Data Lead - Buildings
WSP in Canada
Toronto, ON
- Full-time
Reporting to the Digital Solutions Manager – Buildings, you will work with project delivery teams across Canada to build capabilities to ensure that the asset information WSP delivers to…
Added 17 hours ago
WI
Lifecycle Asset Data Lead - Buildings
WSP in Canada
Canada
- Full-time
Reporting to the Digital Solutions Manager – Buildings, you will work with project delivery teams across Canada to build capabilities to ensure that the asset information WSP delivers to…
Added 17 hours ago
IG
Windows Server Administrator
IMCS Group
AB · Alberta, Canada
- Contract
Validate pre-patch and post-patch server health, services, application dependencies, event logs, restart behaviour, and system availability.
Added 17 hours ago
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Adobe Experience Manager
Aptino, Inc.
Toronto, ON
- $70 to $75 CAD / hour
- Contract
We are looking for a hands-on Adobe Experience Manager (AEM) Engineer to join an enterprise digital experience platform initiative. The ideal candidate will have strong AEM development…
Added 18 hours ago
IT Operations & CMDB Analyst
Purolator
ON · Mississauga, ON
Coordinate onboarding of new applications, services, and cloud resources.
Added 18 hours ago
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Cyber Security Intern/Co-op (Winter 2027)
TD
Mississauga, ON · Toronto, ON
- Full-time
Cyber Security Risk Officers analyze, report on, and mitigate risks related to technology, data, vendors, applications, infrastructure, information, and Cloud. Each of the Cyber Security…
Added 18 hours ago
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AVP, Technology Portfolio Management, Transaction Banking & Payments, TD Securities
TD
Toronto, ON
- Full-time
$170,000 - $215,000 CADThis role is eligible for a discretionary variable compensation award that considers business and individual performance.
Added 18 hours ago
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Adobe Site Reliability Engineer (French)
Apptoza Inc.
Toronto, ON
- Full-time
a. Own end-to-end monitoring of the TCS-controlled surface: CDN and edge configuration, DNS, certificates, cache and invalidation health, and every third-party integration on the page –…
Added 18 hours ago
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IT Operations & CMDB Analyst
Purolator Inc.
Mississauga, ON
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Coordinate onboarding of new applications, services, and cloud resources.
Added 18 hours ago
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Senior DevSecOps Engineer
Aviso Wealth
Remote, Canada
- $120,000 to $135,000 CAD / year
- Full-time
- Remote
Reporting to the DevSecOps Manager, this role provides technical leadership, mentorship, and guidance to other Engineers while collaborating closely with teams across TSP to enhance the…
Added 19 hours ago
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Partner Customer Success Manager (PCSM) - Accounting & Advisory Channel
Teleperformance
TPCA The Well
- Full-time
TP is a worldwide leader in client experience management, digital business services, and strategic contact center outsourcing. With more than 500,000 employees globally, TP combines…
Added 19 hours ago
T
Partner Customer Success Manager (PCSM) - Accounting & Advisory Channel
Teleperformance
TPCA The Well
- Full-time
TP is a worldwide leader in client experience management, digital business services, and strategic contact center outsourcing. With more than 500,000 employees globally, TP combines…
Added 19 hours ago
T
Partner Customer Success Manager (PCSM) - Accounting & Advisory Channel
Teleperformance
TPCA The Well
- Full-time
TP is a worldwide leader in client experience management, digital business services, and strategic contact center outsourcing. With more than 500,000 employees globally, TP combines…

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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