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Interfast Doo

Interfast was founded in 1993 and works in engineering, design, and construction electrical works and security systems.

Construction
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Headquarters
Belgrade, Central Serbia, SerbiaSource: RevenueBaseRetrieved October 13, 2026
Employee range
201 to 500Source: RevenueBaseRetrieved October 13, 2026
Founded
1993Source: RevenueBaseRetrieved October 13, 2026
Published list appearances
62 supported appearances ↗Source: RevenueBase lists
The company at a glance

What does Interfast Doo do?

The company reports experience on large construction projects in Serbia and the region. The company reports around 200 employees and numerous highly qualified external collaborators.

Based on the company’s public LinkedIn information, supplied through RevenueBase.

What the business offers

Services & capabilities.

Electrical installation design documentation

Prepares project and technical documentation for strong- and weak-current electrical installations.

Source: LinkedIn company description · Retrieved October 13, 2026

Explore the business in context

Company lists.

Supported appearances on published RevenueBase lists, including available memberships beyond displayed rankings.

Positions describe ordering within each source list. See how lists are built ↗

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Embeddable award for your website

BADGE PREVIEWInterfast Doo listed #1 on Building electrical design companies, October 8, 2026Open the published source list.
Interfast Doo

#1 Building electrical design companies

Snapshot: October 8, 2026

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Company information

Sources & data notes.

RevenueBase prepared this profile from the company’s public LinkedIn information and RevenueBase company data. These source records were retrieved on October 13, 2026. AI helped summarize these sources, with a separate automated check against the source text completed on November 4, 2026. Directory positions use company-contact counts from separate saved list snapshots dated September 15, 2026, September 16, 2026, September 18, 2026, September 27, 2026, September 28, 2026, October 8, 2026, October 10, 2026 and October 11, 2026. How the company lists are built.

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