Accelerator

Accelerator

Defence Builder is a Kyiv-based defence tech accelerator, founded in 2024 by Sigma Software Labs, KSE - Kyiv School of Economics, and Buntar Aerospace.

The Accelerator unites military, engineers, founders, investors, and scientific institutions to transform early-stage defence innovations into combat-ready solutions for Ukraine's frontline.

By the numbers

By the numbers

15

Accelerated startups

6

Battlefield
proved

4

Currently deployed 

on the frontline

9

Tested their solutions with the Ministry of Defence

4

Successfully closed investment round

60

%

of teams are fund raising or sitting on soft commitments. 

[Q4 2025]

60

%

of teams are fund raising or sitting on soft commitments. 

[Q4 2025]

After successfully running two startup acceleration seasons and driving Ukraine’s defence-tech ecosystem, Defence Builder is i moving into a new era: scaling into Europe and allied nations, building partnerships with leading universities and research institutions, attracting top academic talents, and expanding its investment community across borders and beyond.

While acting internationally, Defence Builder will keep up and intensify its work with startups in Ukraine. The platform is launching the 3rd batch of the startup acceleration program.

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