Key Account Manager jobs in United Kingdom

Location: Cardiff, UK

The MSS Group, operating as MSS Water Ltd and part of the RSK Group, is a specialist provider of facilities, industrial and environmental services with expertise in hazardous, highly regulated and complex environments. We are offering a full‑time, permanent position for a Senior Key Account Manager.

The Senior Key Account Manager will lead and develop allocated key accounts, ensuring strong client relationships and strategic growth within the domestic water hygiene sector. The role includes mentoring Key Account Managers, driving sales growth, leading both sales and operational meetings, and ensuring compliance and operational excellence.

• Mentor and support Key Account Managers, ensuring professional development and effectiveness in managing key accounts.
• Lead strategic account management, ensuring the fulfilment of contractual obligations while exceeding client expectations.
• Oversee the profitability and financial health of key accounts, managing budgets and ensuring targets are met.
• Drive additional sales growth by working closely with Key Account Managers to identify and secure new business opportunities within existing and potential client bases.
• Develop and implement strategic initiatives to strengthen relationships, improve service delivery, and expand the company’s market presence.
• Actively participate in client meetings and business development discussions, ensuring alignment with company objectives.
• Assist in coordinating and facilitating internal and external audits, ensuring compliance with Legionella Control Association standards and industry regulations.
• Provide leadership in operational planning and scheduling, ensuring efficiency and high‑quality service delivery.
• Chair and lead sales meetings and operational meetings, driving discussions, setting clear objectives, and ensuring follow‑through on action points.
• Collaborate with the Business Unit Lead to maintain smooth operations, structured communication, and a high‑performance culture.
• Regularly assess and report on operational performance and sales activities, identifying opportunities for continuous improvement.
• Manage and oversee on‑site teams, ensuring compliance with health and safety regulations.
• Work closely with the SHEQ team to ensure staff training, competency management, and adherence to best practices.
• Ensure the comprehensive recording of all incidents and accidents, following company procedures.
• Participate in operations meetings, contributing strategic insights to drive business growth and performance.

• Extensive experience in water hygiene account management, with a strong understanding of industry regulations and best practices.
• Proven ability to lead, mentor, and develop account management teams.
• Strong track record in driving sales growth and identifying new business opportunities.
• Excellent client relationship management skills with the ability to negotiate and influence at all levels.
• Financial acumen, including budget management and P&L oversight.
• Experience in assisting with internal and external audits related to Legionella compliance.
• Strong operational and project management skills, ensuring smooth execution of client contracts.
• Effective communicator with exceptional organizational and leadership abilities.
• Deep understanding of health and safety regulations within the water hygiene industry.
• Experience in chairing and leading meetings, ensuring structured discussions and clear action planning.

• Salary up to £45,000 plus car allowance.
• Salary sacrifice for the purchase of electric vehicles.
• Smart Health/digital GP service.
• Permanent additional day(s) of annual leave for 5, 10 & 15 years – MSS.
• For the year only – additional day(s) of annual leave for 10, 20, 30, 40 & 50 years – RSK.
• Cycle to work scheme.
• Wellbeing ambassadors – network of internal mental health first aiders.
• Gym/lifestyle discounts.
• Bereavement counselling.
• Life assurance – 3 × annual salary payment for death in service.

The RSK Group is an Equal Opportunity Company. We actively encourage applications from candidates of all genders, races, ethnicities, ages, neurotypes, religions or beliefs, sexual orientations, and those with disabilities.

Based in Cardiff, Wales, the MSS Group is a 500–strong company of skilled professionals operating in regulated and frequently hazardous environments, providing industrial and commercial cleaning, waste management, asbestos removal, water treatment and security services, in addition to asbestos consultancy and retrofit work. Our clients are diverse and include large multinational businesses, tier‑one contractors and public‑sector bodies. Joining MSS offers an opportunity to expand your technical remit and work at a company that prioritises its workforce and encourages proactive client management.