Nebula Purple is a venture capital firm supporting early-stage companies across Southeast Europe, with Kroum Vassilev serving as Operating Partner.
Nebula Purple supports early-stage companies in the Southeast European region across deep tech, green energy, fintech, and artificial intelligence. Kroum Vassilev serves as Operating Partner at the firm, working alongside portfolio companies on fundraising support, strategic direction, and operational scaling.
A Regional Focus
Nebula Purple's focus on Southeast Europe positions it within a venture ecosystem that remains earlier-stage and less saturated than those in Western Europe. That relative openness shapes how the firm sources deals and supports the companies it backs.
Portfolio sectors span deep tech, green energy, fintech, and artificial intelligence — a mix that reflects both the region's existing technical talent and its growing renewable energy sector.
The Operating Partner Role
As Operating Partner, Vassilev's work extends beyond capital allocation into direct support for portfolio companies: helping with fundraising, providing strategic input, and assisting with the operational work of scaling a young company. This kind of hands-on involvement is typical of operating partner roles at venture firms working with early-stage teams.
Vassilev's venture capital work runs alongside his renewable energy roles at Profine Energy Bulgaria and Enevlo, giving him a vantage point across both infrastructure development and early-stage investment in the same region.
Conclusion
Nebula Purple's work in Southeast Europe reflects a broader pattern in Kroum Vassilev's career: identifying opportunity in a region that is still building out its technology and clean energy sectors. A wider view of that pattern is covered in the profile on Kroum Vassilev's cross-sector background.