At Acorn, people are at the heart of everything we do. With over 40 years’ experience delivering market‑leading engineering and compliance services across London and the South East, we have built a reputation based on trust, technical excellence, and long‑term partnerships with our clients.
We are seeking a knowledgeable and proactive Mobile Electrical Engineer to join our established electrical services team, covering client sites across our London sites and the surrounding urban areas
This is a mobile role involving electrical installation works, testing, inspection and reactive maintenance within commercial environments. Due to the operational requirements of the business and response times for client sites, it is critical that applicants live within one hour of Central London during peak traffic conditions.
Acorn promotes a professional, inclusive, and collaborative working environment where engineers are trusted and supported. You will be backed by a dedicated internal helpdesk, administration team, and experienced contract managers who understand the realities of working on site and are committed to helping you succeed.
Location: Central London and the surrounding urban areas
Salary: up to £44000 depending on experience plus overtime and callout
Hours: 41.25 hours a week
Company Benefits
Pension scheme
Company Events
Wellbeing Benefits – 24 hours turnaround GP appointment for the whole family
25 days holiday (not including bank holidays)
Company Van and fuel card
Carry out electrical installation works within commercial premises
Complete Electrical Installation Condition Reports (EICRs)
Carry out periodic emergency lighting inspections and testing
Fault diagnosis and rectification on electrical systems
Testing and certification of electrical installations and minor works in line with BS7671
Work in accordance with NIC/EIC approved contractor requirements
Communicate effectively with clients, suppliers and internal teams
Maintain site logs, diaries, task sheets and photographic reports
Organise daily workload efficiently and work proactively
Strong knowledge of commercial electrical installations
Experience testing and certifying electrical systems
Ability to fault-find and rectify electrical issues
Experience with emergency lighting and fire alarm systems
Knowledge of DALI lighting control systems
Experience with BMS control wiring and fault finding
City & Guilds 2391 or 2394 & 2395 (or equivalent)
18th Edition Wiring Regulations
Completed electrical apprenticeship
JIB registered (desirable)
IPAF and PASMA (desirable)
Full UK driving licence
Excellent communication and time management skills
Proficient in Word, Excel and Outlook
Professional, reliable and self‑motivated
Able to work independently or as part of a team
To support operational response times and business needs, applicants must live within one hour of Central London during peak traffic. Applications from candidates outside this travel radius will not meet the requirements of the role.
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.
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
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