Field Service Engineer

Recruitment Helpline; South Kesteven; On-site; GBP 32,000 - 46,000; Full time

Benefits offered by this job

Competitive salary

Company pension

Company van & tools

PPE provided

Training & development

Job summary

Recruitment Helpline is seeking an experienced Field Service Engineer for mobile welfare units. You will attend customer sites, diagnose faults in generators, electrical systems and plumbing, and perform repairs to restore full operation.

The role is van-based, field-facing and requires independent work across regional sites. Ideal candidates have multi-skilled field service experience, diesel engine fault-finding, and the ability to read telemetry data remotely.

Qualifications

• Proven multi-skilled field service / mobile/mechanic background.
• Diesel engine fault-finding and servicing (small industrial engines).
• 12V/24V DC electrical fault-finding and wiring.
• Confident reading fault data / telemetry from remote diagnostics.

Responsibilities

• Attend, diagnose and repair mobile welfare cabins in the field and restore systems to full working order.
• Work from a company van; cover breakdowns and warranty/service across sites; remote triage as needed.

Skills

Diesel engine fault-finding

12V/24V electrical fault-finding

Remote diagnostics interpretation

Customer reporting

Tools

Victron energy systems

Electrical test equipment

Diagnostic tools

Job description

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: Bourne, Lincolnshire - Depot Based.

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/Eberspächer-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.

The employer fully supports Equality in Employment. All employment is decided based on qualifications, merit and business need