September 2026

Top 5 fire engineering companies

Of the 883 fire engineering companies listed in the OpenFire directory in September 2026, these profiles were viewed most by people and AI assistants.

  1. #1

    A400 - Projetistas e Consultores (Fire & Safety Department) logo

    A400 - Projetistas e Consultores (Fire & Safety Department)

    Green By Default

    Consultancy 100+ people Est. 1995 2 offices
    Alarm monitoring Car park ventilation CFD modelling +29 more
    Porto, Porto · HQ View firm
  2. #2

    Jensen Hughes logo

    Jensen Hughes

    Fire safety experts at the forefront of hazard prevention.

    Consultancy 21–100 people 73 offices
    Building safety disputes CFD modelling Compartmentation +13 more
    Helsinki, Uusimaa · HQ View firm
  3. #3

    Arup logo

    Arup

    Fire safety engineering grounded in fire science.

    Consultancy 100+ people Est. 1946 50 offices
    CFD modelling Compartmentation Evacuation modelling +6 more
    London, England · HQ View firm
  4. #4

    Nacional Fire logo

    Nacional Fire

    Fire projects, AVCB licensing and installation across Brazil.

    Supplier 1–5 people Est. 2024 1 office
    Detection & suppression testing Alarm monitoring Building safety disputes +45 more
    São Paulo, São Paulo View firm
  5. #5

    AECOM logo

    AECOM

    The world's trusted infrastructure consulting firm.

    Consultancy 100+ people Est. 1990 13 offices
    CFD modelling Compartmentation Evacuation modelling +5 more
    Glasgow, Scotland · HQ View firm

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How the rankings work

Firms are ranked by how often their OpenFire directory profile was viewed during the calendar month, by people and by AI assistants. Search-engine crawlers, other automated traffic and link previews are not counted. Firms with equal views share a rank.

A firm with offices in several countries, or working across several categories, is ranked in each of them on the same monthly total. A ranking is only published where enough firms are listed and viewed for it to be meaningful.

A ranking reflects interest in a firm's listing. It is not an endorsement, and it is not a check of a firm's competence, certification or accreditation.