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Sr Process Engineer Jobs in Ontario (NOW HIRING)

Alquemy

Process Engineer

Toronto, ON · Hybrid

Process Engineering Manager 12-Month Contract Hybrid GTA We are looking for a senior, hands-on Process Engineering Manager to support large-scale business and technology transformation initiatives ...

UKIMEA Region

Senior Process Water Engineer

Cardiff, ON · On-site

As a senior engineer you are likely to have ability to work across the project life cycle from developing concept designs to outline and detailed designs, and skills working in or directing process ...

CRB

Process Engineer

Mississauga, ON

Participates in basic project system design programming with support from Lead or Senior Engineer ... Process Simulation  * Process Descriptions  * Equipment Specifications  * Hygienic ...

Smarter Alloys

Process Engineer

Cambridge, ON · On-site

Process Engineer About Smarter Alloys Smarter Alloys is a world leader in smart materials innovation, pioneering advanced shape memory materials for applications in medical devices, cleantech ...

Actalent

Process Engineer

Mississauga, ON

CA$38 - CA$45/hr

MUST HAVE 1: 2-4 years of process engineering experience MUST HAVE 2: Mechanical Engineering MUST HAVE 3: Experience with process development NICE TO HAVE 1: Medical device or electronics NICE TO ...

H2O Innovation Inc.

Process Engineer

Burlington, ON · On-site

The Process Engineer will hold a permanent and full-time position and will work in one of H2O Innovation's offices (Quebec, QC, Oakville, ON, Calgary, AB or Ramsey, MN locations). The Process ...

CCC

Process Engineer

Elmira, ON · On-site

CA$90K - CA$100K/yr

We're now looking for a Process Engineer to join us at our Elmira Site to monitor daily plant operations of a sulfuric acid, sodium bisulphite manufacturing and a 960 KW steam co-gen facility by ...

H2O Innovation Inc.

Process Engineer

Burlington, ON · On-site

The Process Engineer will hold a permanent and full-time position and will work in one of H2O Innovation's offices (Quebec, QC, Oakville, ON, Calgary, AB or Ramsey, MN locations). The Process ...

SPX

Process Engineer

Mississauga, ON

CA$85K - CA$110K/yr

We are looking for a highly motivated Process Engineer with a strong lean manufacturing background. Reporting to the Director of Manufacturing; the Process Engineer will develop, implement, and ...

Actalent

Process Engineer

Mississauga, ON

CA$38 - CA$45/hr

Comply with the Health & Safety policies of the company and inform Management of unsafe working conditions Skills process engineering, lean manufacturing, process development, design of experiments ...

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Sr Process Engineer information

What is a Sr Process Engineer?

Senior Process Engineers are experienced professionals responsible for designing, optimizing, and overseeing the processes used in manufacturing or production environments. They analyze workflows, troubleshoot process issues, and implement improvements to increase efficiency, reduce costs, and ensure product quality. Sr Process Engineers often lead teams, manage projects, and work closely with other departments such as quality assurance, maintenance, and operations. Their expertise is crucial in industries like chemicals, pharmaceuticals, oil and gas, and food processing. They typically hold a degree in engineering and have several years of experience in process engineering roles.

What are the key skills and qualifications needed to thrive as a Sr Process Engineer?

To thrive as a Sr Process Engineer, you need a solid background in chemical, mechanical, or industrial engineering, often with a bachelor's or master's degree and relevant industry experience. Familiarity with process simulation software (such as Aspen Plus or HYSYS), Six Sigma or Lean certifications, and knowledge of safety and regulatory standards are typically required. Strong problem-solving, project management, and communication skills help distinguish top performers in this role. These skills and qualifications are vital for optimizing processes, ensuring efficiency and safety, and driving continuous improvement in complex manufacturing environments.

How does a Sr Process Engineer typically collaborate with cross-functional teams to improve manufacturing efficiency?

Sr Process Engineers work closely with teams such as production, quality assurance, maintenance, and R&D to identify areas for process optimization. They often lead or participate in cross-functional meetings to gather data, analyze workflow bottlenecks, and implement solutions that enhance efficiency and product quality. Effective communication and project management skills are essential, as Sr Process Engineers must balance technical requirements with practical constraints while ensuring all stakeholders are aligned with proposed changes.

What is the difference between Sr Process Engineer vs Process Engineer?

AspectSr Process EngineerProcess Engineer
QualificationsBachelor's degree in engineering, 5+ years experience, certifications like Six SigmaBachelor's degree in engineering or related field, 1-3 years experience
ResponsibilitiesLead process improvements, optimize manufacturing processes, mentor junior staffAssist in process development, data collection, support process optimization
Work EnvironmentManufacturing plants, industrial facilities, cross-functional teamsManufacturing settings, engineering teams, project-based tasks

The main difference between a Sr Process Engineer and a Process Engineer lies in experience, responsibility level, and scope of work. The Sr Process Engineer typically leads projects, mentors others, and has more advanced qualifications, while the Process Engineer supports and executes process improvements under supervision.

How much does a senior process engineer earn?

A senior process engineer typically earns between $80,000 and $130,000 annually, depending on experience, industry, and location. They often have specialized skills in process optimization, project management, and may hold certifications such as Six Sigma or PMP.

What does a senior process engineer do?

A senior process engineer designs, develops, and optimizes manufacturing or industrial processes to improve efficiency, safety, and quality. They analyze data, troubleshoot issues, and implement process improvements, often using tools like process simulation software and adhering to industry standards. They also mentor junior engineers and collaborate with cross-functional teams to ensure smooth operations.

What are popular job titles related to Sr Process Engineer jobs in Ontario?

For Sr Process Engineer jobs in Ontario, the most frequently searched job titles are:

What job categories do people searching Sr Process Engineer jobs in Ontario look for?

The top searched job categories for Sr Process Engineer jobs in Ontario are:

What cities in Ontario are hiring for Sr Process Engineer jobs?

Cities in Ontario with the most Sr Process Engineer job openings:

Sr Process Engineer jobs near you
Infographic showing various Sr Process Engineer job openings in Ontario as of August 2026, with employment types broken down into 1% As Needed, 73% Full Time, 22% Part Time, 3% Contract, and 1% Nights. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution.

Data Center - Principal Process Engineer

H2O Innovation Inc.

Oakville, ON • On-site

Full-time

Dental, Vision, PTO

Re-posted 20 days ago

H2O Innovation rating

7.5

Company rating: 7.5 out of 10

Based on 7 frontline employees who took The Breakroom Quiz

272nd of 495 rated machine equipment manufacturers

Job description

H2O is a smart water treatment solutions company. We simplify water treatment by integrating state-of-the-art technologies to solve water challenges for good with our team of trusted experts. Our mission is to provide services on an international scale, in a people-oriented, caring environment that fosters professional and personal growth. Be part of our talent pool and grow with H2O.

H2O innovation is looking for Senior Process Engineer  anywhere in North America! This professionnal will be in charge of the process design throughout the entire lifecycle of projects, from the initial budgetary bids all the way to commissioning of full-scale facilities. Technologies for these projects include multimedia filters, activated carbon, ultrafiltration, reverse osmosis, Ion Exchange, Ultraviolet and electrodeionization. While knowledge in all technologies is not required, familiarity with several technologies is an asset for the position.
 
The Benefits

Overall remuneration including:

  • Profit sharing program;
  • Group Insurance plan including dental, vision & telemedicine;
  • RRSP plan with employer's contribution;
  • A minimum of three (3) weeks of paid vacation per year;
  • Twelve (12) paid wellness days per year.
  • Flexible working hours & hybrid working;

The Day-to-Day

  • Perform preliminary design of water treatment plants based on membrane projections and other accepted calculations in accordance with established criteria;
  • Collaborate closely with sales managers and engineering discipline teams; 
  • Prepare budget, preliminary and final (bid) cost estimates including bill of materials, equipment, and controls;
  • Prepare formal proposals for submittal to potential clients;
  • Develop drawings of equipment and plant playouts as requested and oversee designers;
  • Create process drawings such as P&IDs and PFDs;
  • Select equipment (pumps, valves, membranes, etc.);
  • Develop and present technical presentations/papers on in-house projects to promote Company and water technologies at conferences and clients meetings;
  • Continuous investigation into improving design of current equipment and treatment processes, and development or acquisition of new equipment or processes to complement existing portfolio;  
  • Prepare engineering documents such as functional descriptions, process control narratives, etc.; 
  • Maintain an excellent working knowledge of state, provincial and federal regulations, as well as current design processes; 
  • Maintain contact with current installations to obtain performance, operation and maintenance data and provide operational assistance as requested;
  • Maintain records of actual costs and provide comparison and analysis of discrepancies between estimated and actual costs;
  • Advance the development of standard treatment packages for UF and NF/RO systems; 
  • Travel to project sites and perform treatment process audits; 
  • Other duties as assigned. 

The Skills We Are Looking for

  • A degree in chemical, environmental, civil or mechanical engineering or equivalent;
  • Minimum 7 years experience as a process engineer in the water industry;
  • Experience with membrane filtration treatment;
  • The ability to work efficiently on multiple assignments simultaneously;
  • Excellent written and oral communication skills in English;
  • Experience with Ion Exchange (IE), an asset;
  • Knowledge of drinking and wastewater treatment, an asset.


What H2O Innovation employees say

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