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Added 10 mins ago
Program Manager, Public Works
Regional Municipality of Wood Buffalo
Fort McMurray, AB
…incumbent will be responsible for collaborating with leadership and operations in the design, planning, and delivery of projects and programs within Public Works to ensure effectiveness and…
Added 10 mins ago
B
Senior Product Manager
Blazesoft
Concord, ON
- Full-time
…or more of our platforms, working closely with engineering, design, legal, and operations to ship features that move the needle on player acquisition, retention, and…
Added 25 mins ago
Senior AI Applied Value Architect
Celonis
Canada
…global ecosystem of partners to make their AI agents, people, systems, and processes work together, achieving transformational outcomes. We believe there's a massive opportunity to unlock…
Added 25 mins ago
Applied AI Value Architect
Celonis
Canada
…global ecosystem of partners to make their AI agents, people, systems, and processes work together, achieving transformational outcomes. We believe there's a massive opportunity to unlock…
Added 25 mins ago
M
Senior Software Engineer - Credit Commercial Engineering
Marqeta
Remote, Canada
- Full-time
- Remote
Lead design for medium components/features and participate in design for larger components/features (moving from task level impact to medium-size project level impact).
Added 25 mins ago
A
Senior Software Engineer, Behavior Planning
AeroVect
Remote, Canada
- $160,000 to $200,000 CAD / year
- Full-time
- Remote
We are looking for an experienced Senior Software Engineer who can design and build best-in-class behavior planning systems for autonomous driving in structured, low-speed environments.
Added 25 mins ago
LK
Interim Director, Human Resources
LHH Knightsbridge
Calgary, AB
- Contract
Design and oversee effective recruitment strategies to attract top industry talent within services, compliance, operations, and corporate functions.
Added 25 mins ago
TI
Sr Mgr, Process Improvement & Transformation
telMAX Inc.
Markham, ON
- $90,000 to $130,000 CAD / year
- Full-time
…Working horizontally across Product, CEX, Care, Sales, Field Ops, Systems, Network and other teams, this role identifies friction, connects the dots across functions and leads…
Added 25 mins ago
AE
Design Team Lead
Atlas Engineered Products Ontario (TSXV:AEP)
Carman, MB
- Full-time
We are currently seeking a motivated and experienced Prairies Design Team Lead to support our operations at Penn-Truss in Saltcoats, SK, and South Central Building Systems in Carman, MB.
Added 56 mins ago
M
Cybersecurity Architect
Manulife
Toronto, ON
- Full-time
Design and guide security architectures across areas such as IAM, SIEM and security operations, cloud security, application security, and incident-response automation.
Added 1 hour ago
HT
PD Software for Service
Husky Technologies
Bolton, ON
- Full-time
…passion of our people around the world and their desire to lead change. At the same time, we are not afraid to expect a lot and strive for leadership in all of our key markets. We are a…
Added 1 hour ago
HT
Director, Finance (CSM)
Husky Technologies
Bolton, ON
- Full-time
Lead financial evaluation of pricing strategies, contract renewals, service program design, and capital or operating investments to support sustainable growth and margin expansion.
Added 1 hour ago
HT
Product Development Engineer
Husky Technologies
Bolton, ON
- Full-time
…Product Development Engineer. The successful candidate will lead the technical development of packaging products working with business development, completing engineering, and subsequent…
Added 1 hour ago
P
Infrastructure Analyst
Procom
Richmond, BC
- $63,750 to $85,000 CAD / year
- Full-time
…and maintaining robust, reliable, and secure infrastructure systems to support business…
Added 1 hour ago
BH
Specialist Engineer - Electrical
BC Hydro
Burnaby, BC
- Temporary
Lead or oversee construction and commissioning activities to ensure systems are delivered in conformance with contract scope, technical specifications, engineering design intent and…
Added 1 hour ago
ST
Senior Chemical Process Engineer
Saltworks Technologies
Richmond, BC
- $110,000 to $150,000 CAD / year
- Full-time
Saltworks is a 2025 Technology Fast 50 company and an EY Entrepreneur of the Year award winner. We lead our industry in adopting and developing AI across our products, projects, and…
Added 1 hour ago
ST
Senior IT Systems Specialist
Saltworks Technologies
Richmond, BC
- $110,000 to $140,000 CAD / year
- Full-time
Saltworks is a 2025 Technology Fast 50 company and EY Entrepreneur of the Year award winner. We lead our industry in adopting and developing AI across our products, projects, and…
Added 1 hour ago
ST
Pilot Plant Engineer
Saltworks Technologies
Richmond, BC
- Full-time
Saltworks is a 2025 Technology Fast 50 company and EY Entrepreneur of the Year award winner. We lead our industry in adopting and developing AI across our products, projects, and…
Added 2 hours ago
A
Manufacturing Engineer
Actalent
Oshawa, ON
- $45 to $55 CAD / hour
- Contract
…optimization, and collaborates closely with production, quality, design, suppliers, and program teams to enhance final vehicle quality and manufacturing…
Added 2 hours ago
ML
Engineering Manager
Maple Leaf Foods Inc
London, ON
- $122,000 to $172,000 CAD / year
- Part-time
Lead equipment selection, process design, automation improvements, and production line modifications.
Added 2 hours ago
ML
FSQA Team Lead
Maple Leaf Foods Inc
ON · Hannon, ON
- $62,000 to $91,000 CAD / year
- Part-time
…as program review and auditing functions. The incumbent will lead & engage cross functional teams during audit completion and development of corrective action plans for regulatory and…
Added 2 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 2 hours ago
Solutions Architect - Onsite
Mariner
Halifax, NS
8+ years of experience in IT, including significant experience in solution architecture, systems design, or enterprise application delivery.
Added 2 hours ago
GS
IT Operations Lead
Giatec Scientific Inc.
Ottawa, ON
- Full-time
We're looking for an IT Operations Lead who believes great IT is invisible: people get what they need, it just works, and it's secure without getting in anyone's way. You'll lead IT at a…
Added 3 hours ago
PC
Mechanical & Piping Engineer
Paladin Canada
Saskatoon, SK
- Full-time
Reporting to the Mechanical Engineering Lead, the Mechanical & Piping Engineer will work as part of the PLS Project team, alongside engineering consultants, equipment vendors, construction…

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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