At a Glance
- Tasks: Diagnose and repair mobile welfare units in the field, ensuring they operate safely and efficiently.
- Company: Join a leading company in the maintenance of essential site facilities.
- Benefits: Competitive salary, company van, tools, and ongoing training provided.
- Other info: Enjoy a dynamic, hands-on role with opportunities for growth and development.
- Why this job: Make a real difference by keeping construction teams safe and comfortable on-site.
- Qualifications: Experience in field service, diesel engines, and electrical systems is essential.
The predicted salary is between 30000 - 40000 £ per year.
An excellent opportunity for an experienced Field Service Engineer Mobile Welfare Units to join a well-established company.
Job Type: Full-Time, Permanent
Salary: Competitive Salary, Depending on Experience.
Location: Dundee Home Based Working in the Field.
About The Company: They are a market leader in the repair and maintenance of towable and static cabins that keep site teams warm, fed and safe on construction, civils and events sites nationwide.
About The Role: To attend, diagnose and repair mobile welfare cabins in the field restoring generators, power, heating, water and waste systems to full working order, first-time wherever possible, while working safely and unsupervised at customer sites. The role is van-based and mobile, covering breakdowns and warranty/service work across customer and hire-fleet sites. A large share of faults are diagnosed remotely (via unit telemetry) before attending, so the engineer must be comfortable interpreting remote data and arriving prepared.
What the Role Actually Deals With:
- Generators / diesel engines - Oil pressure & oil-change faults, fuel systems, exhaust/DPF, alternator, AVR, governor, glow, E-stop, servicing. Engines: HATZ, Kubota, Lombardini, Perkins, Stephill (Boss L48/L70/L100 units).
- Plumbing, water & waste - Frozen/burst pipes, tanks, UV filters, water pumps, toilets, waste-level sensors, leaks.
- Electrical & power - 12/24V DC systems, Victron kit (inverters, Cerbo, MPPT/solar), fuses, relays, wiring looms, sockets, PIR lighting, "no power" / dead-console faults, electrical-test compliance.
- Diesel heaters - Parking/diesel heaters glow-pin and fuel-pump failure, re-priming, rewiring, thermostats, frost-related no-heat.
- Batteries - Lithium battery diagnosis (100/200Ah), BMS behaviour, Victron charge settings, deep-discharge recovery, charge/hold faults.
- Telemetry / comms - Units not updating/communicating SIM/modem, Cerbo, remote-monitoring diagnosis and SIM replacement.
- Towing & chassis - Lifting rams/pins, wheels-down locking, coupling, brakes, tyres getting units mobile.
- Hydraulics - Power packs, rams, solenoids for raising/lowering units.
- Fabrication - Doors, door closers, hoods, structural repair.
- Solar - Panels and MPPT charge faults.
Roughly 1 in 5 reported faults turn out to be user error so customer education, clear on-site communication and honest reporting matter as much as the wrench work.
Candidate Requirements
Essential:
- Proven multi-skilled field service / plant / mobile-mechanic background (welfare units, generators, plant, HGV, marine, motorhome/leisure, or similar).
- Diesel engine fault-finding and servicing (small industrial engines HATZ, Kubota, Lombardini, Perkins or equivalent).
- 12V / 24V DC electrical competence fault-finding wiring, fuses, relays, inverters, charging systems using a multimeter.
- Confident reading fault data / telemetry and working from remote diagnostics.
- Practical plumbing / water-system repair skills.
- Strong problem-solving and first-time-fix mindset; comfortable working alone and unsupervised.
- Full UK driving licence; B+E (trailer/towing) entitlement or willingness to obtain.
- Good customer-facing manner and clear written job reporting.
Highly Desirable:
- Electrical qualification City & Guilds 2391 (Inspection & Testing) and/or 18th Edition (BS 7671); PAT competence.
- Experience with Victron energy systems (Cerbo GX, MultiPlus inverters, MPPT, VRM) and lithium/BMS battery systems.
- Diesel parking/air heater experience (Webasto/Eberspcher-type).
- Hydraulics (power packs, rams, solenoids).
- Fabrication repairs.
- Solar PV, and basic IT/comms (SIM, modem, routers) familiarity.
- Relevant safety tickets (CSCS Card, first aid, working at height, manual handling).
Personal Attributes
- Self-motivated and reliable; the customer's day-rate is stopped until the unit works again.
- Methodical and safety-first, especially around live electrics, fuel and lifting operations.
- Resilient and adaptable outdoor, all-weather, sometimes remote sites.
- Honest reporter records what was found and done, including when a fault is user error or unresolved.
Working Conditions
Field-based, mobile role with company van and tools. Regional travel to customer and hire sites; some early starts / site-hours working. Breakdown-response element may include on-call / out-of-hours cover (to be confirmed). Physical role: lifting, working outdoors, in confined welfare-unit plant spaces and all weathers.
What they offer
- Competitive salary (depending on experience).
- Company pension.
- Company van, tools and PPE.
- Manufacturer and in-house training across generators, power, heating and telemetry.
- Varied, hands-on work with a UK manufacturer that builds what you fix.
If you feel that you have the relative skills/attributes to fulfil this role then please apply now for immediate consideration. The employer fully supports Equality in Employment. All employment is decided based on qualifications, merit and business need.
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