Legionella Commercial Technical Lead

Southend on Sea | Permanent | £45,000 to £50,000PA

Are you an experienced water hygiene professional with a strong commercial mindset? Do you have the technical expertise to provide trusted guidance on Legionella compliance while driving business growth?

We're looking for a Legionella Commercial Technical Lead to play a key role in expanding a growing water hygiene division. This is a unique opportunity for someone who thrives on building client relationships, winning new business, and using their specialist knowledge to deliver compliant, high-quality solutions.

About the Role

This is a predominantly commercial position, with approximately 80% of your time focused on business development and sales, helping to secure new contracts and develop existing client relationships. The remaining 20% of the role will involve technical support and compliance oversight, ensuring services are delivered to the highest standards and in line with industry regulations.

Key Responsibilities

Business Development & Sales

• Identify, develop, and secure new water hygiene and Legionella compliance contracts.
• Generate new business opportunities through networking, referrals, industry contacts, and targeted account management.
• Build and maintain strong relationships with facilities managers, property managers, landlords, and building operators.
• Prepare and present technical proposals, tenders, remedial quotations, and service recommendations.
• Drive growth through cross-selling and expanding service offerings within existing accounts.
• Represent the business at client meetings, networking events, and industry forums.

Technical Leadership & Compliance

• Conduct technical audits to assess service quality and compliance standards.
• Review and support the development of Risk Assessments and Method Statements (RAMS) for complex projects.
• Provide expert technical advice on domestic hot and cold water systems, Legionella control measures, and remedial works.
• Support clients during complex compliance situations, including Legionella-positive findings and remediation projects.
• Ensure all recommendations and proposals align with ACoP L8, HSG274, and current industry best practice.

What We're Looking For

• Proven experience within the water hygiene, Legionella, or compliance industry.
• Strong business development and account management skills.
• Expert knowledge of ACoP L8, HSG274, and domestic water system compliance.
• Experience producing technical quotations, tenders, and remedial proposals.
• Excellent communication and relationship-building abilities.
• Ability to balance commercial objectives with technical excellence.

Why Apply?

• Opportunity to play a leading role in the growth of an established water hygiene division.
• Blend of commercial responsibility and technical influence.
• Exposure to high-profile clients and complex compliance projects.
• A position where your expertise will directly contribute to business success and service quality.

If you feel you have all the skills and experience required for this position, please get in touch with us at One to One Personnel on or send us your CV to or