Senior Principal Process Engineer - Water Sector

Stantec; Brighton; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A global leader in strategic advisory services seeks a Senior Principal Process Engineer in Brighton or nearby locations. The role involves leading technical execution on major Wastewater projects, mentoring a team of engineers, and ensuring successful project delivery while meeting quality and budget objectives. Candidates should have a degree in Chemical/Process Engineering and substantial experience in the water sector. An attractive benefits package includes competitive salary and flexible working arrangements.

Benefits

Competitive salary

Pension plan

Free private medical insurance

Discounted gym membership

Flexible working arrangements

Qualifications

• Demonstrable experience in the water industry.
• Experience in a design and construction environment is beneficial.

Responsibilities

• Lead the technical execution of Wastewater projects from inception to construction.
• Guide Project Managers in project delivery.
• Mentor and develop the regional team of Process Engineers.

Skills

Technical mastery in process calculations

Mass balance

Control philosophy

Commissioning

HAZOPs

P&ID development

Leadership

Communication

Staff management

Education

Degree in Chemical/Process Engineering or equivalent

Chartered Engineer status

Job description

The Opportunity

Ready to accelerate your career in the water sector? Join Stantec, a globally recognised leader and a top‑tier strategic advisor to the industry. With the AMP8 cycle well underway and delivery intensifying, we are seeking a Senior Principal Process Engineer with extensive Wastewater experience to drive major projects across the South East. This pivotal role can be based in Brighton, Ashford, Kings Hill, or Southampton.

You will serve as a key strategic advisor to our clients, leading the technical execution of ground‑breaking Wastewater projects from inception through to construction. Your expertise will be vital in guiding Project Managers, ensuring high‑level execution that meets cost, schedule, and quality objectives. Beyond project delivery, you will be instrumental in mentoring and developing our regional team of Process Engineers and nurturing strong, collaborative relationships across our multidisciplinary teams.

About You

We are looking for a candidate with a degree in Chemical/Process Engineering (or equivalent) and, ideally, Chartered Engineer status, with demonstrable experience in the water industry.

You must possess technical mastery in key process skills, including process calculations, mass balance, control philosophy, commissioning, HAZOPs, and P&ID development. Experience in a design and construction environment is beneficial. Crucially, you need strong leadership, communication, and staff management skills to translate client needs into actionable solutions and foster a culture of continuous learning.

Why Join us?

• Our People Culture: We're a close knit team and very proud of our friendly and collaborative environment
• Great Benefits: Competitive salary, pension plan, holidays, free private medical insurance, discounted gym membership and lots more.
• Flexible working arrangements
• Great Projects in all of our sectors across the UK & I
• Industry leading training and development as well as paid for professional subscriptions

About Stantec

The Stantec community unites more than 34,000 employees working in over 450 locations across 6 continents. We have been working with our clients and communities in the UK for over 150 years. We plan, design, deliver and manage the development and infrastructure needed to support the creation of sustainable, healthy and prosperous communities. Our teams provide effective and relevant solutions, translating our clients’ vision into valued consents, deliverable plans for projects and programmes, and efficient designs for delivery based on technical excellence and deep market insights.

Stantec provides equal employment opportunities to all qualified employees and applicants for future and current employment and prohibits discrimination on the grounds of race, colour, religion, sex, national origin, age, marital status, genetic information, disability, sexual orientation, gender identity or gender expression. We prohibit discrimination in decisions concerning recruitment, hiring, referral, promotion, compensation, fringe benefits, job training, terminations or any other condition of employment. Stantec is in compliance with laws and regulations and ensures equitable opportunities in all aspects of employment.

Building an inspired, inclusive work environment that attracts, supports, and develops world‑class talent is a crucial key to our success. If you are excited by this role but worry that your experience doesn’t exactly align, we encourage you to apply. At Stantec we want you to perform your best at every stage of the recruitment process and are committed to ensuring it is accessible to all. If you need any support or require adjustments to be made then please contact [e-mail] and we will talk to you about how we can support you.