Senior Engineer in Wales

For over 40 years, we've built our reputation by delivering high-quality engineering and compliance services, creating lasting relationships with our clients and investing in the people who make it happen every day.

If you're an experienced Building Services Engineer looking for a role where you're trusted, valued, and given the freedom to do what you do best, we'd love to hear from you.

We're looking for a Senior Building Services Engineer to join our team, covering a portfolio of commercial sites across South Wales. Most of your time will be spent supporting customers throughout South Wales, with a handful of sites located in North Wales.

No two days are the same. You'll be responsible for delivering planned and reactive maintenance, fault finding, and small works projects across a varied range of buildings, while building strong relationships with customers and becoming a trusted technical expert on site.

What makes Acorn different is the support behind you. We understand the challenges engineers face because many of our managers have been there themselves. You'll be backed by a dedicated helpdesk, experienced contract managers, and a proactive administration team, allowing you to focus on delivering excellent service.

We believe in giving our engineers the autonomy to make decisions, the tools to do the job properly, and the opportunity to develop their careers within a business that genuinely values their contribution.

If you're looking for a role that offers variety, independence, strong support, and the chance to be part of a growing and respected business, this could be the perfect opportunity for you.

Location: South Wales (with occasional travel to a small number of sites in North Wales)

Salary: Competitive - Plus overtime and call out

Hours: 41.25 hours a week

As part of our team, you'll enjoy:

• Life Assurance
• Death in Service Insurance
• 360 Wellbeing App, including 24/7 access to GP appointments
• Fertility Treatment Support Leave
• Paid Maternity Leave
• Paid Paternity Leave
• Gym membership discounts and a wide range of lifestyle savings
• Employee Refer-a-Friend Bonus Scheme
• Employee Recognition Programme

The Role

You will be responsible for carrying out planned preventative maintenance, servicing and reactive repairs across multiple customer sites. You will work independently while maintaining close communication with clients, subcontractors, the helpdesk team and contract managers to ensure the highest levels of service delivery.

Key responsibilities include:

• Carry out planned and reactive maintenance across a diverse portfolio of sites.
• Diagnose and rectify electrical, mechanical and building services faults.
• Ensure all maintenance activities are completed safely and in accordance with company procedures and statutory regulations.
• Produce accurate maintenance records, reports and certification.
• Liaise with customers, contractors and internal stakeholders to ensure excellent service delivery.
• Assist with specialist projects, shutdowns and improvement works.
• Ensure compliance with Health & Safety requirements, RAMS and safe systems of work.

About You

To be successful in this role, you will have:

• City & Guilds in Mechanical Engineering or equivalent qualification
• Completed a recognised mechanical engineering apprenticeship or be a time-served maintenance engineer
• Strong knowledge of M&E building services
• Experience working with HVAC systems, boilers, air conditioning, ventilation, heating and cooling systems
• Understanding of Legionella awareness and health & safety regulations
• Excellent communication and organisational skills
• Ability to work independently and as part of a team
• Full UK driving licence
• 18th Edition Wiring Regulations
• F-Gas Certification
• Experience working within a facilities management or multi-site maintenance environment.

Career Prospects at Acorn

Acorn is committed to developing its people for the long term. Many of our engineers progress into senior engineering, specialist, or management roles as they grow within the business. We actively encourage skill development, increased responsibility, and career progression for individuals who show commitment, reliability, and a strong customer-focused approach.

As our service offering and client base continue to grow, there are ongoing opportunities for overtime, role development, and exposure to a wide variety of technically interesting sites and systems.

Why Join Acorn?

• A stable, well-established company with over four decades of industry experience
• A supportive, knowledgeable internal team that understands engineering roles
• A strong focus on teamwork, professionalism, and safety
• Genuine long-term career progression opportunities
• PPM-led work across varied sites in the local and surrounding counties

We are an Equal Opportunity Employer and do not discriminate against any employee or applicant for employment because of race, colour, sex, age, national origin, religion, sexual orientation, gender identity, status as a veteran, and basis of disability.