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Enerflex Ltd

Principal Solutions Engineer

Canada

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Job details

Posting language: English
Posted: Oct 15, 2026

Original job description

Summary

Enerflex Water Solutions is seeking a seasoned Principal Solutions Engineer to drive the growth and technical excellence of our global Water Solutions business.

In this role, you will collaborate closely with the Sales and Business Development team to identify, pursue, and shape opportunities across key markets. You will engage early with customers to define technical requirements, develop conceptual process solutions, and articulate Enerflex’s value proposition. Working with our Applications Engineering and Proposals team, you will lead the development of optimized technical concepts and proposals that meet performance, quality, and commercial objectives.

This senior technical role requires deep expertise in produced water treatment and upstream oil/water separation processes, along with strong commercial awareness and the ability to translate technical designs into winning business solutions.

This position is based in Calgary, AB, with flexible hybrid work arrangements and up to 25% international travel to support client engagements and project development activities

Responsibilities and Duties

Develop conceptual process designs for produced water and oil treatment systems, encompassing the full process scope from three-phase separation to treated oil and water meeting BS&W, oil-in-water, and TSS specifications.
Perform process modelling, heat and mass balance calculations, and preliminary equipment sizing using Aspen HYSYS and other tools.
Evaluate and select suitable treatment technologies - with strong knowledge of conventional (e.g., hydrocyclones, flotation, filtration (Primary, Secondary, and Tertiary treatment)
Collaborate with Sales and Business Development to translate customer needs into fit-for-purpose technical solutions and compelling bids that highlight Enerflex’s differentiation.
Prepare process flow diagrams (PFDs), conceptual layouts, and high-level equipment lists to support proposal development and internal reviews.
Provide technical sales support through presentations, clarification responses, and client workshops.
Work cross-functionally with Engineering, Proposals, and Project Delivery teams to ensure conceptual designs are scalable and executable.
Support evaluation of commercial models, risk factors, and terms and conditions (T&Cs) to align solutions with profitability and company standards.
Maintain awareness of emerging technologies, alternative competitor offerings and market trends to continuously enhance Enerflex’s solution portfolio.
Represent Enerflex’s technical expertise at customer meetings, industry events, and seminars.

Qualifications

University Degree (or equivalent) in Chemical or Process Engineering or applicable discipline.
Senior level experience in produced water and oil treatment process design within the upstream oil and gas industry.
Professional Engineer (P.Eng.) designation is beneficial.
Proven experience developing conceptual designs and budgetary estimates for water treatment systems and process packages.
Proficiency with Aspen HYSYS and related process simulation tools.
Strong technical understanding of oil/water separation, solids removal, and water polishing technologies.
Demonstrated ability to engage with clients and internal teams to deliver technically sound, commercially competitive solutions.
Excellent communication, presentation, and proposal-writing skills.
Familiarity with EPC, DBOOM, and modular equipment supply business models.
Strong analytical, organizational, and problem-solving skills, with the ability to prioritize and meet deadlines.
Self-motivated, results-oriented, and capable of working independently with minimal supervision.
Proficiency in Microsoft Office (Word, Excel, PowerPoint, Outlook).

About Us:

Transforming Energy for a Sustainable Future. Enerflex is a premier integrated global provider of energy infrastructure solutions, covering gas processing, compression, power generation, refrigeration, cryogenic, energy transition, and water solutions. We proudly employ more than 5,000 highly skilled employees across over 25 countries worldwide.

Enerflex places its core Values of Integrity, Commitment, Creativity, and Success into action across all aspects of the business. Our innovation, strong commitment to safety, and superior service to our customers positions us as the optimal partner to meet the needs of the dynamic energy industry.

We foster a culture of ensuring our employees have the tools to do their jobs right, but to also thrive in their roles. We pride ourselves in our competitive wages, extensive rewards programs, celebration of successes of individuals and teams, and are committed to ensuring Enerflex remains a safe and inclusive space for all.

What Enerflex Offers You:

Values Based Organization
Competitive Compensation
Safety Focused Culture
Incentive Programs
Professional Development Opportunities
Collaborative in office work environment, supportive team members

Enerflex is an Equal Opportunity Employer

Enerflex grants equal employment opportunity to all qualified persons without regard to race, color, sex, age, national origin, religion, genetic information, mental or physical disability, or any other characteristic protected by applicable federal, state, or local law. Equal employment opportunities are provided in recruitment, hiring, promotions, wages, benefits, and other terms, conditions, and privileges of employment.

Disclaimer

The above statements are intended to describe the general nature and level of work being performed by people assigned to this job. They are not intended to be an exhaustive list of all responsibilities, tasks, duties, knowledge, skills, and abilities required.

Please visit our website at www.enerflex.com for more information.

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More about this job

Responsibilities

The Principal Solutions Engineer will lead the development of optimized technical concepts and proposals for water treatment systems while collaborating with Sales and Business Development. They will engage with customers to define technical requirements and represent Enerflex's technical expertise at industry events and client meetings.

Requirements

Candidates must have a university degree in Chemical or Process Engineering and senior-level experience in produced water and oil treatment within the upstream oil and gas industry. Proficiency in Aspen HYSYS and strong commercial awareness are essential for delivering competitive technical solutions.

Skills

Process engineering
Produced water treatment
Oil/water separation
Aspen HYSYS
Process modeling
Technical sales support
Proposal development
Conceptual design
Project development
Equipment sizing
Heat and mass balance
Upstream oil and gas
Commercial awareness
Technical writing
Presentation skills
Problem-solving

Benefits

Competitive compensation
Incentive programs
Professional development opportunities
Collaborative work environment

Visa sponsorship

Not detected in the job text

Keywords

Water treatment
Produced water
Oil/water separation
Aspen HYSYS
Process engineering
Upstream oil and gas
Three-phase separation
Hydrocyclones
Filtration
Process flow diagrams
EPC
DBOOM
Modular equipment
Technical sales
Proposal writing
Heat and mass balance
P.Eng.
Energy infrastructure
Process simulation
Solids removal
Water polishing
Commercial models
Risk management
Engineering design
Project delivery
Technical concepts
Business development
Process packages
Budgetary estimates
Energy transition

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