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).