Site Manager (THG Omega) - THG Manufacturing

About THG 

We are THG, a global ecommerce group on a mission to be the global online leader in beauty and sports nutrition. 

Our portfolio of leading retailers and brands such as LOOKFANTASTIC, Myprotein, ESPA, Perricone MD, and Cult Beauty form our two core businesses: THG Beauty and THG Nutrition. 

From Manchester to New York, we’re powered by a team of over 2500 people who work together, lead by example, and think BIG.  

With us, you’ll go further, faster. What are you waiting for? 

Location: THG Omega, Skyline Dr, Burtonwood, Warrington, WA5 3TP

About THG Nutrition Manufacturing

THG Manufacturing is the powerhouse behind some of the world’s most recognisable nutrition and wellness brands, including Myprotein, Myvegan & Myvitamins. As part of THG Nutrition, our purpose-built, state-of-the-art facilities enable us to control every step of the product journey, from concept and formulation to manufacturing, packing, and distribution.

With vertically integrated operations, we combine innovation, quality, and scale to produce industry-leading health and wellness products, including powders, capsules, tablets, snacks, and bars. Our in-house capabilities give us the agility to respond to trends quickly, deliver consistently for our customers, and lead the way in a fast-paced global industry.

Our mission is to empower healthier lives worldwide, and THG Manufacturing plays a critical role in making that possible. Whether it’s developing the next best-selling protein bar or ensuring world-class production standards, our teams are driven by purpose, powered by technology, and united by values that break boundaries and push the industry forward.

It’s a truly exciting time to be part of THG Manufacturing — and we’re always on the lookout for passionate, talented individuals to help shape the future of Nutrition.

About the Role

The Site Manager is responsible for the leadership and performance of the THG Omega manufacturing site in Warrington, a large-scale operation with a headcount of approximately 150–250 employees operating across a 24/5 shift pattern. The site specialises in powder blending and multi-format packaging.

This role focuses on optimising and scaling an already stable operation, with particular emphasis on automation progression, asset lifecycle management, and sustained performance improvement.

The Site Manager will operate as a highly visible and experienced leader, capable of managing complexity at scale, while continuing to build organisational capability and driving operational excellence.

With strong support functions in place and a capable leadership team, the role requires an experienced operator who can balance day-to-day delivery with medium-term strategic improvements, particularly in relation to automation and process efficiency.

As the Site Manager for THG Omega you will:

Site Leadership & Operational Delivery

• Lead all aspects of site operations across powder blending and packaging activities to deliver production plans safely, efficiently, and at scale.
• Own site performance across safety, quality, cost, delivery, and people metrics.
• Maintain a visible leadership presence, ensuring strong engagement across all shifts and functions.
• Ensure effective coordination between production, warehouse, and engineering to meet throughput and service requirements.
• Drive performance against site KPIs including output, efficiency, labour utilisation, and OTIF.

Health, Safety & Compliance

• Lead all Health & Safety activities, ensuring a consistently safe working environment across a large, complex operation.
• Ensure adherence to GMP, food supplement regulations, and internal compliance standards.
• Maintain a high level of audit readiness, working closely with the Technical and HSE functions.
• Promote a proactive and embedded safety culture across all levels of the site.

Quality & Technical Alignment

• Work in close partnership with the Technical Manager to ensure all products meet required standards and specifications.
• Ensure robust quality systems and strong adherence to GMP across all manufacturing and packaging processes.
• Support root cause analysis (RCA), corrective and preventative actions (CAPA), and ongoing quality improvement initiatives.
• Drive improvements in right-first-time performance and reduction in waste and rework.

People Leadership & Development

• Lead and develop a multi-layer leadership structure, including Production, Warehouse, and Engineering Managers.
• Build leadership capability and succession across the site, ensuring depth and resilience.
• Set clear expectations, accountability, and performance standards across all functions.
• Foster a strong, engaged, and high-performing culture aligned to operational excellence.

Engineering & Asset Performance

• Partner closely with the Engineering Manager to ensure site assets remain reliable and fit for purpose, with particular attention to an aging asset base.
• Ensure effective preventative maintenance and asset care strategies are in place.
• Drive initiatives to reduce downtime and improve overall equipment effectiveness (OEE).
• Support prioritisation of capital investment linked to automation and asset renewal.

Automation & Continuous Improvement

• Lead the progression of automation across the site, identifying and implementing opportunities to improve efficiency, consistency, and scalability.
• Work with central teams and engineering to deliver automation and process improvement initiatives.
• Embed a culture of continuous improvement, focusing on productivity, waste reduction, and process standardisation.
• Ensure automation initiatives are effectively integrated into operations with minimal disruption.

Cost Control & Site Efficiency

• Own site cost performance across labour, materials, and overheads within a large-scale operation.
• Drive efficiency improvements without compromising safety, quality, or compliance.
• Identify and deliver cost-saving initiatives through process optimisation and automation.

Stakeholder Management & Reporting

• Provide clear, structured reporting on site performance to the Production Director.
• Highlight risks, constraints, and opportunities in a timely and transparent manner.
• Collaborate closely with Technical, HSE, and central group functions to ensure alignment and delivery of group priorities.

Key Measures of Success

• Consistent delivery of production targets and service levels (OTIF).
• Sustained high performance in safety and compliance metrics.
• Successful progression of automation and process optimisation initiatives.
• Improved equipment reliability and asset performance.
• Increased efficiency, reduced waste, and improved labour utilisation.
• Strong engagement, capability, and retention across the leadership team and wider workforce.

What skills and experience do I need for this role?

Essential

• Significant experience in a manufacturing leadership role within a large, complex site.
• Strong background in regulated manufacturing (GMP, BRCGS, or similar).
• Proven ability to lead multi-functional teams and deliver performance at scale.
• Experience in driving operational improvements in stable, high-output environments.
• Strong leadership presence with the ability to influence across all levels of the organisation.
• Excellent organisational, problem-solving, and decision-making skills.

Desirable

• Experience in powder processing, blending, or high-volume packaging environments.
• Exposure to automation projects and capital investment programmes.
• Strong understanding of lean manufacturing and continuous improvement methodologies.
• Engineering, Manufacturing, or related degree.

What’s in it for me?

Career Development

• Access bespoke development programmes that have been designed and developed by our in-house L&D team.
• Continued development through our upskilling programme that is delivered in partnership with an industry-leading training provider.

Enhanced Leave

• 25 days annual leave plus bank holidays.
• Don’t want to work on your birthday? We don’t either! Enjoy your day off on us!
• Enhanced maternity and paternity pay, depending on length of service.
• Up to 10 days compassionate leave.
• Buy back up to 3 days each year.
• Unlock 2 days volunteer leave after 12-months.

Wellbeing Support

• Access face-to-face and virtual appointments with our in-house GP (Manchester Head Office).
• Access to our subsidised on-site dentist (Manchester Head Office).
• Access our 247 Employee Assistance Programme (EAP) which is provided by Bupa.
• State-of-the-art on-site gym (Manchester Head Office).
• Access to our on-site physio (Manchester Head Office).

Other Perks

• Save up to 12% on the cost of personal tech through our salary sacrifice scheme.
• Up to 50% staff discount on THG brands.
• On-site staff shop (Manchester Head Office).
• Know someone who would be perfect for THG? Refer them and get up to £1000 when they pass their probation.
• Anniversary gifts when you hit 5 and 10 years of service.

THG is proud to be a Disability Confident Committed employer. If you are invited to interview, please let us know if there are any reasonable adjustments we can make to the recruitment process that will enable you to perform to the best of your ability.

THG is committed to creating a diverse & inclusive environment and hence welcomes applications from all sections of the community.

Because of the high volumes of applications our opportunities attract, it sometimes takes us time to review and consider them all. We endeavour to respond to every application we receive within 14 days. If you haven't heard from us within that time frame or should you have any specific questions about this or other applications for positions at THG please contact one of our Talent team to discuss further.