Passive Fire Engineer

A passive fire engineer works on the parts of a building that contain fire without needing to be switched on - fire-resisting walls and floors, fire doors, cavity barriers, structural fire protection (coatings and boards on steel) and the sealing of every pipe, cable and duct that penetrates a fire-resisting wall. The job is a mix of design and specification work, reviewing drawings and product test evidence, and going on site to inspect and survey what has actually been built. Clients are typically main contractors, developers, architects, housing providers, local authorities and building owners who need to show that their building meets the Building Regulations and, for higher-risk buildings, the Building Safety Act regime.

Starting salary: £25k–£33k
Live graduate jobs: 1 open now
Main way in: Direct entry as a graduate or trainee fire engineer at a fire…
They usually ask for: A degree in fire engineering, civil or structural engineering…

Approximate graduate salary

Typically somewhere around £25,000–£33,000 to start, though this varies widely by employer type and location - London consultancies and specialist contractors tend to pay at the higher end, regional roles lower, and contracting roles sometimes add a car or vehicle allowance because of the travel involved.

What you'd actually do

Surveying buildings - opening up ceiling voids and risers to photograph and record service penetrations, missing cavity barriers, badly fitted fire doors and compartment wall defects, then logging them against drawings in a survey app or spreadsheet.
Reading fire test evidence and assessments: checking whether a particular fire collar, sealant or board system has been tested in the exact wall type, thickness and penetration arrangement it's being used in, and flagging where there is no valid test to support it.
Marking up architectural drawings to show compartment lines - which walls and floors are fire-resisting and for how long (30, 60, 90 or 120 minutes) - and producing fire strategy or fire stopping drawings and schedules.
Writing reports: condition surveys, remedial specifications, technical opinions on whether a non-standard detail is acceptable, and sections of fire strategy documents.

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Calculating or specifying structural fire protection - working out how much intumescent coating (paint that swells when heated to insulate steel) or board is needed for a given steel section and fire rating.
Attending design team meetings and site progress meetings to resolve clashes, typically where a services route has been driven through a compartment wall with no workable solution.
Inspecting and signing off installed firestopping work, including witnessing installers and checking their third-party certification is in scope for what they have fitted.

How graduates get in

Direct entry as a graduate or trainee fire engineer at a fire engineering consultancy, a multidisciplinary engineering consultancy with a fire team, or a specialist passive fire protection contractor. This is the most common route and most vacancies are advertised individually rather than as large graduate schemes.
A BEng or MEng in Fire Engineering or Fire Safety Engineering - a small number of UK universities run these. This is the most direct academic route but far from the only one.
Conversion from a related engineering or built environment degree (civil, structural, mechanical, building services, architectural technology, building surveying, construction management) with employer-funded training on the job. Very common - many passive fire specialists did not study fire.
Moving across from construction site experience - site manager, surveyor, or an installer who has worked with firestopping and door sets - then adding qualifications. Common in contracting, less common in consultancy.

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A postgraduate MSc in Fire Safety Engineering, either straight after a first degree or part-time while working. Part-time study paid for by an employer is a well-trodden path.
Degree apprenticeships and trainee schemes within larger contractors and housing providers, which have grown since fire safety became a bigger regulatory priority. These are still a minority route but worth looking for.

What employers ask for

A degree in fire engineering, civil or structural engineering, building services, mechanical engineering, architecture/architectural technology, building surveying or construction. Subject matters more here than in many graduate jobs because you need to read drawings and understand building construction - but there is no single required subject, and employers regularly hire from across that list.
A 2:2 or above is typical; many employers are flexible on classification if you can demonstrate genuine interest in building safety and some construction exposure. Grades are generally less of a filter than in, say, banking graduate schemes.
A full UK driving licence is frequently asked for, because survey work means travelling to sites. This comes up more often than graduates expect.
A CSCS card (Construction Skills Certification Scheme - proves basic site safety competence) for site access. Employers usually arrange and pay for this if you don't have it.

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Working towards professional registration is normally expected over time - IEng or CEng through the Institution of Fire Engineers (IFE) or another engineering institution, or membership grades of the IFE. Some roles instead emphasise FIRAS/IFC third-party certification schemes on the contracting side.
Any construction site experience, a placement year, or even summer work with a contractor is a genuine advantage, because much of the job is understanding how buildings actually go together rather than how they are drawn.

Skills that matter

Reading and interpreting construction drawings

Almost everything starts with an architectural or M&E (mechanical and electrical) drawing set, and you need to see where compartment lines fall and where services will cross them.

Interrogating fire test evidence

A product is only proven for the exact configuration it was tested in, so the core technical judgement of the job is deciding whether a test report or assessment genuinely covers the detail in front of you.

Knowledge of the regulatory framework

You need working familiarity with the Building Regulations Approved Document B, the relevant British Standards, the Regulatory Reform (Fire Safety) Order and the Building Safety Act regime for higher-risk buildings, because your recommendations have to map onto them.

Precise, defensible technical writing

Reports are read by clients, building control, insurers and sometimes lawyers, so an ambiguous sentence about whether a wall is compliant can become a real problem years later.

Holding a position under commercial pressure

Contractors on a tight programme will push for a cheaper or faster detail, and the engineer has to be able to say no and explain exactly why without derailing the project.

Physical site awareness and attention to detail

Surveys involve crawling through ceiling voids and risers in part-built or occupied buildings, and the defects that matter are often small, hidden and easy to walk past.

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

Graduate or trainee fire engineer - working under supervision, doing survey work, drawing mark-ups, defect logging and drafting report sections. Usually one to three years, though this varies with how much site exposure you get.
Fire engineer - running your own small projects and surveys, writing specifications and reports with light review, and dealing directly with clients and contractors. Often the point at which people work towards IEng or CEng and IFE membership.
Senior fire engineer - leading larger or more complex projects, signing technical opinions, supervising graduates, and becoming the person others ask about unusual details. Timeframes vary widely and depend as much on project exposure as years served.
Principal / associate level, or a move into a related speciality - fire strategy and active fire engineering, building safety case authorship for higher-risk residential buildings, Approved Inspector or building control work, insurance risk engineering, or a technical role with a product manufacturer.
Longer term: team or discipline lead in a consultancy, technical director, running an independent consultancy, or moving client-side into a building safety manager role for a large landlord or developer. Some move into expert witness work, which usually requires many years of experience.

What people get wrong

“Fire engineering means designing sprinklers, alarms and smoke extraction systems.”

That is active fire protection - systems that have to detect or operate. Passive fire protection is the opposite: compartmentation, fire doors, structural protection and firestopping that work simply by existing. Some consultancies cover both, but a passive-focused role spends far more time on walls, penetrations and test evidence than on system design.

“It's a desk job in a consultancy office.”

Much of the work involves getting into ceiling voids, risers, plant rooms and partially built floors with a torch, camera and PPE. Many graduates are surprised by how physical and travel-heavy the first couple of years are - and a driving licence is often needed.

“You need a fire engineering degree to get in.”

A large proportion of practitioners came from civil, structural, building services, architecture or surveying backgrounds, or from site and installation work, and picked up fire knowledge through employer training and part-time study. The dedicated degree helps but is not a gatekeeper.

“It's a niche, quiet corner of construction.”

Since Grenfell and the resulting regulatory changes, including the Building Safety Act and the new regime for higher-risk buildings, demand for passive fire competence has grown sharply and the work carries real legal and reputational weight. Your written opinions can be scrutinised long after the project ends.

Where this varies

The job looks quite different depending on who employs you. In a fire engineering or multidisciplinary consultancy you are mostly advising: reviewing designs, writing strategies and specifications, and producing reports, with site visits for inspection and survey. In a specialist passive fire protection contractor you are closer to delivery - surveying buildings, pricing and designing remedial packages, supervising installers and compiling handover evidence. Client-side roles with housing associations, local authorities or large estates centre on remediation programmes across an existing portfolio rather than new build. Sector matters too: high-rise residential remediation is heavily driven by the Building Safety Act and is concentrated in cities; commercial and industrial new build is more about getting compartmentation and structural protection right first time. Regionally, London and the South East have the densest concentration of consultancy roles, but surveying and remediation work exists across the UK, and Scotland operates under its own Building Standards system rather than the Approved Documents used in England and Wales.

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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.