Principal Process Engineer

Allerton Waste Recovery Park, Knaresborough, North Yorkshire, United Kingdom

Posted Tuesday 5 August 2025 at 00:00 Expires Sunday 24 August 2025 at 23:59

At Thalia, we're looking for a Principal Process Engineer to join our senior site team and drive excellence across our operation at Allerton Waste Recovery Park. This is a career-defining opportunity for a chartered engineer with a flair for optimisation, a deep technical background, and the ability to influence and collaborate across diverse functions.

The Role

As Principal Process Engineer, you'll be the technical authority on process performance across your site - leading root cause analysis, influencing capital project design, and driving operational sustainability. You'll also play a pivotal role in process safety, performance reporting, regulatory support, and innovation. This is a visible, strategic position where your engineering insight directly informs decision-making, investment cases, and continuous improvement at scale.

• Location: Allerton Waste Recovery Park, Moor Lane, Knaresborough, HG5 0SD

The Responsibilities

• Be the site expert in process technology and performance.
• Optimise plant operations for cost-effectiveness, stability, and sustainability.
• Investigate and resolve process-related issues through root cause analysis.
• Lead the development and ownership of Process Safety Management and Management of Change.
• Translate data into performance planning, improvement actions, and business insight.
• Collaborate with stakeholders across operations, maintenance, compliance, and procurement.

The Person

• You are a chartered engineer with:
• Experience as a Principal Engineer in an operational setting.
• Hands-on understanding of risk management, process control, and unit operations.
• A pragmatic mindset, able to solve complex problems and communicate technical issues clearly.
• Strong analytical, interpersonal, and planning skills.
• An ability to draw insight from other sectors and apply it to waste and energy operations.

Benefits

• Entry into Company bonus scheme - up to 10%
• Contributory pension up to 8%
• Private medical cover (single)
• Company car or car allowance (£493 per month)
• 25 days annual leave
• Annual opportunity to buy additional annual leave (up to 5 days)
• Life assurance: 4 x annual salary
• Flexible benefits through Bravo Benefits, including health, wellbeing, and lifestyle options.
• Free parking

Our Business

At Thalia Waste Management, we are creating a future to be proud of. We develop innovative waste-to-energy solutions across our four strategic sites in North Yorkshire, Milton Keynes, Cambridgeshire, and the Isle of Wight. Our technologies include mechanical and biological treatment, energy from waste, recycling, in-vessel composting, thermal treatment, small-scale energy solutions, and anaerobic digestion. We process approximately 300,000 tonnes of waste annually, generating energy equivalent to about 600 million solar panels, and recycle around 95,000 tonnes of waste yearly.

Inclusion and Diversity

We are committed to an inclusive and diverse workplace. We consider skills and passion alongside experience and offer flexible working arrangements. As a Disability Confident employer, we provide reasonable adjustments during the recruitment process and employment. We value diversity and do not discriminate based on race, religion, gender, age, disability, or other protected characteristics.