Assistant Engineer Structural Investigation

An assistant engineer working in structural investigation inspects existing buildings and structures to work out what condition they're in, why something has gone wrong (cracking, movement, corrosion, water damage, fire or impact damage) and what needs doing about it. The work is usually done for building owners, local authorities, housing providers, insurers, developers or solicitors, by a consulting engineering practice or a specialist surveying/structural firm. As the assistant, you do a lot of the site inspection, measuring, record-gathering and calculation work that feeds into a senior engineer's report and recommendations.

Starting salary: £25k–£32k
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Main way in: The most common route is a civil or structural engineering…
They usually ask for: An accredited civil or structural engineering degree is the…

Approximate graduate salary

Typically around £25,000–£32,000 to start, though this varies widely by employer type and location - London and large consultancies tend to sit at the upper end, smaller regional practices lower. Pay commonly steps up noticeably on achieving chartered status.

What you'd actually do

Going out to site to inspect structures - climbing ladders or scaffolds, lifting floorboards, opening up ceilings, photographing cracks, measuring openings and member sizes, and recording what you see on a survey pro forma or tablet
Crack and defect mapping: marking up plans or sketches with where damage is, how wide cracks are, which direction they run, and whether the pattern suggests subsidence, thermal movement, overloading, corrosion or something benign
Digging through old records - archive drawings, building control files, historic maps, previous reports - to work out how a building was originally constructed and whether it's been altered
Doing structural calculations to check whether an existing beam, lintel, slab or wall is adequate for the loads on it, usually to Eurocodes and sometimes to the older British Standards the building was designed to

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Drafting inspection reports: writing up findings, setting out likely causes, proposing remedial works or further investigation, and getting them reviewed and marked up by a senior engineer
Specifying and coordinating testing and monitoring - crack monitors (studs or tell-tales), level surveys, trial pits, concrete cover and carbonation testing, material sampling - and interpreting what comes back
Sketching repair details (new steel beams, props, resin anchors, underpinning, crack stitching) and passing them to a technician to draw up, plus the odd site visit to check works are being built as intended

How graduates get in

The most common route is a civil or structural engineering degree (BEng or MEng) straight into a graduate engineer post at a consultancy that does existing-structures or forensic work, then being put onto the investigation team. Some firms recruit specifically for this; at many you'll rotate or be allocated based on workload.
Direct entry to a smaller specialist practice - party wall, structural surveying, subsidence and defect-diagnosis firms often hire one or two graduates at a time and advertise ad hoc rather than running a graduate scheme. Titles like 'assistant engineer' are very common here.
Via the insurance and loss-adjusting supply chain: firms that handle subsidence and damage claims for insurers employ engineers to inspect and diagnose. This is a sizeable employer of investigation engineers and is less well known to graduates.
From a related degree - architectural engineering, building surveying, geology or materials science - sometimes works, though for a role involving calculations employers usually want structural analysis in your background or will expect you to top up with a conversion MSc in structural engineering.

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An industrial placement year or summer internship with a consultancy is a strong route in, partly because site-based investigation work rewards people who already know how to behave on site.
Moving across internally from a technician, CAD or site role having done a part-time or apprenticeship degree. Less common for a graduate reader, but it does happen and employers value the hands-on background.

What employers ask for

An accredited civil or structural engineering degree is the usual baseline - accredited by the Institution of Structural Engineers (IStructE) or Institution of Civil Engineers (ICE), which matters because it's the cleanest path to chartered status later. Non-accredited degrees are workable but you may need 'further learning', often an MSc.
Typically a 2:1, though this varies a lot - smaller practices and specialist firms are often more flexible and more interested in whether you can hold a sensible conversation about how a building stands up.
A driving licence is genuinely important for most of these jobs, because properties are scattered and you'll be visiting several in a day. Some urban-only roles don't need it; many adverts list it as essential.
A CSCS card (the construction site competence card) and basic site safety awareness - employers usually arrange this if you don't have it, but having it already helps.

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Working-at-height and confined-space awareness for some employers, plus a reasonable level of physical fitness: lofts, crawl spaces, scaffolds and ladders are routine.
A commitment to working towards chartered or incorporated status (CEng/IEng) with IStructE or ICE is expected at most consultancies and is usually written into your development plan.

Skills that matter

Diagnostic reasoning from incomplete information

You rarely have original drawings or a clear load path, so the job is forming a defensible theory about why a structure is behaving as it is from a handful of visible clues.

Knowledge of traditional construction and how older buildings fail

Much of the stock you'll inspect is Victorian brickwork, timber floors, cast iron, early reinforced concrete or post-war system build, none of which behaves like the modern frames taught in most degree courses.

Hand calculations and quick structural checking

On site you often need an order-of-magnitude answer there and then about whether something is dangerous, and back at the desk you'll be assessing existing members rather than designing new ones from scratch.

Clear technical writing for non-engineers

Your report may be read by a homeowner, an insurance claims handler, a solicitor or a court, so it has to state findings, cause and recommendation in language that survives being argued over.

Photographic and written record discipline

Investigation work is often used in claims or disputes, and a missing dimension or an unlabelled photo can mean a second site visit or an indefensible conclusion.

Handling people on site

You'll be in occupied homes and workplaces, sometimes telling anxious owners their house is moving, and you need to gain access, ask awkward questions and manage expectations without overcommitting to an answer.

Putting these on a CV? We counted which skills 12,914 live graduate adverts ask for, and what to do with the answer — part of our application advice.

Where it leads

Assistant/graduate engineer: closely supervised, most inspections reviewed and countersigned, building up a logbook of experience against the professional institutions' competence requirements.
Engineer: running straightforward investigations alone, signing off your own routine reports, specifying monitoring and remedial schemes. This typically comes after a few years, but timelines vary widely with how much site exposure you get.
Chartered or incorporated engineer (CEng/IEng via IStructE or ICE). Most people get there somewhere in the region of three to five years after graduating, but it genuinely varies - the IStructE chartered membership exam in particular is demanding and many take more than one attempt.
Senior engineer or specialist: leading complex or contentious investigations, acting as the technical lead on disputed defect cases, mentoring assistants, and often becoming the person clients ask for by name.
Beyond that the paths diverge: associate/director in a consultancy; expert witness work where you give structural evidence in litigation; moving into insurance technical roles; or switching into mainstream new-build design, asset management for an infrastructure owner, or heritage and conservation engineering.

What people get wrong

“It's a desk job doing structural calculations, like new-build design.”

A large share of the week can be on site, in lofts, cellars, scaffolds and occupied houses. The calculation work exists but it's usually assessment of what's already there, and it's secondary to observation and diagnosis.

“'Investigation' means dramatic forensic work on collapses.”

Catastrophic failure investigation is a small and specialised corner of it. The bulk is everyday diagnosis: cracked walls, subsidence claims, sagging floors, corroding concrete balconies, water ingress, whether a removed wall was load-bearing, and condition surveys of buildings an owner needs to budget for.

“Because the structures already exist, it's easier than design and a good place to coast.”

It's arguably harder in one respect - in new design you know the material properties and geometry because you chose them, whereas here you're inferring them. Degrees teach you to design to codes, not to assess unknown existing construction, so much of the technical skill is learned on the job.

“Your report is just an internal technical document.”

Investigation reports frequently end up in insurance claims, party wall disputes, property transactions and occasionally court, so your wording carries real liability. Assistants are taught early to distinguish what they observed from what they infer.

Where this varies

The role differs a lot depending on who you work for. In a general civil/structural consultancy, investigation may be one strand of a job that also includes new-build design, so you'd split your time. In a specialist defect-diagnosis, party wall or subsidence practice, it's close to all you do, with high volumes of residential inspections and tight report turnarounds. Insurer and loss-adjuster-facing work is driven by claims deadlines and has a strong commercial and sometimes adversarial edge. Heritage and conservation practices bring in listed-building consent, lime mortars and historic materials. There's also a distinct infrastructure version - inspecting bridges, tunnels, retaining walls and highway structures for Network Rail-type asset owners or highways authorities - which involves more night possessions, access equipment and standardised inspection regimes, and less residential work. Geography matters too: clay-soil regions, particularly the South East, generate far more subsidence investigation work than areas with different ground conditions, while coalfield and mining areas generate more ground-movement work.

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General guidance about the role across the UK market, not about any specific employer. Entry routes and requirements vary — always check the individual job advert.