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Added 20 mins ago
Senior Software Engineer, PAM
Okta
Toronto, ON
$136,000 to $187,000 CAD / year
Full-time
Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work…
Added 20 mins ago
Field Support Engineer
Cognizant
Toronto, ON
Full-time
As a Field Support Engineer, you will make an impact by providing onsite and remote support for end-user devices, Microsoft 365 applications, and workplace technology services. You will…
Added 20 mins ago
AKS Platform Engineer (1891) $85-95/hr
Direct IT Recruiting Inc.
Toronto, ON
$85 to $95 CAD / hour
Contract
Strong experience as a Platform Engineer, DevOps Engineer, or Kubernetes-focused Infrastructure Engineer
Added 20 mins ago
Field Support Engineer
Cognizant
Calgary, AB · Greater Calgary Metropolitan Area
Full-time
As a Field Support Engineer, you will make an impact by providing onsite and remote support for end-user devices, Microsoft 365 applications, and workplace technology services. You will…
Added 20 mins ago
Technical Director, Transit, Bus & Fleet
WSP in Canada
Toronto, ON
Full-time
…team development to influence the next generation of transit systems and fleet…
Added 21 mins ago
Senior Software Engineer, PAM
Okta
Toronto, ON
Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work…
Added 50 mins ago
Backend Software Engineer (Rust)
Arkion-tech
Toronto, ON · Greater Toronto Area, Canada
Full-time
We are looking for a Backend Software Engineer with strong Rust expertise to build secure, scalable, and high-performance services for our Next-Gen Human Identity (NHI) Platform.
Added 50 mins ago
Senior Engineer, Process Maintenance
Elk Valley Resources
Sparwood, BC
$115,000 to $145,000 CAD / year
Full-time
EVR is proud to be part of the Glencore Group, contributing to a global portfolio of operations with a history that dates back more than 100 years in Canada.
Added 50 mins ago
Monitoring Tool Automation Engineer
Tata Consultancy Services
Toronto, ON
$100,000 to $120,000 CAD / year
Full-time
…clients to transform themselves across the full AI stack, from infrastructure to…
Added 50 mins ago
FTM Engineer
Tata Consultancy Services
Toronto, ON
$100,000 to $120,000 CAD / year
Full-time
…clients to transform themselves across the full AI stack, from infrastructure to…
Added 1 hour ago
Senior Engineer, Process Maintenance
Elk Valley Resources
Sparwood, BC
$115,000 to $145,000 CAD / year
EVR is proud to be part of the Glencore Group, contributing to a global portfolio of operations with a history that dates back more than 100 years in Canada.
Added 1 hour ago
Technical Director, Transit, Bus & Fleet
WSP
Toronto, ON
…team development to influence the next generation of transit systems and fleet…
Added 1 hour ago
Senior Rail Transportation Planner
Arcadis
Vancouver, BC
Full-time
…and transit projects including master plans, transportation infrastructure projects, feasibility studies, as well as transportation economics and equity, among other…
Added 1 hour ago
Sr. Software Dev Engineer, Ring Cloud Connectivity Org
Amazon
Toronto, ON
- Architect fault-tolerant distributed systems using AWS services, ensuring scalability from thousands to millions of concurrent device operations
Added 1 hour ago
Sr. Software Dev Engineer, Ring Cloud Connectivity Org
Amazon
Toronto, ON
- Architect fault-tolerant distributed systems using AWS services, ensuring scalability from thousands to millions of concurrent operations
Added 1 hour ago
Application Support
Soho Square Solutions
Montreal, QC
Contract
This role requires close collaboration with business users, development teams, infrastructure teams, and operations groups to ensure application stability, performance, security, and…
Added 4 hours ago
CE Operator Technician - Night shift
Apex Systems
Toronto, ON
$40 to $50 USD / hour
Full-time
Support 24x7x365 on-site data‑center operations and electrical infrastructure.
Added 4 hours ago
Staff DevOps Developer
Visier Solutions Inc
Vancouver, BC
In this role, you will bring a blend of software engineering discipline, deep cloud networking and Infrastructure as Code (IaC) expertise, and an eye for emerging AI agent architecture. You…
Added 5 hours ago
Site Reliability Engineer
MLabs
Remote, Canada
Remote
A Site Reliability Engineer (SRE) is being sought to join a multi-disciplinary infrastructure team. This team manages a broad spectrum of technical operations - from automated server and…
Added 7 hours ago
Senior Systems Engineer I
STEMCELL Technologies
Burnaby, BC · Canada - BC, Burnaby, Production Court, Onsite
Full-time
We’re looking for a Senior Systems Engineer to lead the design, implementation, operation, and continuous improvement of business-critical systems and infrastructure that enable STEMCELL’s…
Added 7 hours ago
Electrical Engineer
City of Vancouver
Vancouver, BC
The Electrical Engineer is responsible for assisting with asset inspections to establish and validate electrical system component inventory and condition, and supporting the on-going…
Added 8 hours ago
Lead Electrical Engineer, Resources
WSP in Canada
St. John's, NL · Greater St. John's Metropolitan Area
Full-time
In this role, you will lead and shape the electrical power systems that drive Canada’s mining, metals and industrial sectors. Based in one of our Ontario offices - ideally in Northern…
Added 8 hours ago
Senior Electrical Engineer, Resources
WSP in Canada
St. John's, NL · Greater St. John's Metropolitan Area
Full-time
In this role, you will shape the electrical power systems that drive Canada’s mining, metals and industrial sectors. Based in one of our Ontario offices - ideally in Northern Ontario,…
Added 8 hours ago
High Voltage Power Engineer
Intersect
Canada
Full-time
…technical oversight of high-voltage (HV) and medium-voltage (MV) systems across solar, wind, and battery storage projects. You’ll drive utility interconnection, optimize substation and…
Added 8 hours ago
Senior OT Control Systems - Engineering Specialist
Mariner Innovations
Saint John, NB
Full-time
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…

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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