About Anthiva
When momentum stalls. We help you get it back.
Sometimes something's not working. Sometimes you're growing and the old ways can't keep up. Sometimes you're mid-transition and the path forward isn't as clear as it needs to be.
The common thread is that something that should be moving, isn't. And the longer it stays that way, the more it costs.
Anthiva exists to help leaders and businesses move through those moments faster and with less friction than they would on their own. We bring people and operational capability into the work, not as separate disciplines, but as one integrated approach.
Leadership and team development
When the team isn't performing the way it should, or the culture isn't supporting the work, we help leaders understand what's actually driving it and build the conditions to shift it.
Using the ANTHIVA model, we work across culture, capability, and ways of working. Workshops, facilitation, planning, and ongoing advisory.
Operational and strategic partnership
When you need experienced operational capacity, not someone advising from the edge of the work. We step into transitional gaps, lead projects that have been sitting too long, and provide the strategic people and operations function that growing businesses need but aren't always ready to hire for full-time.
Insight into Action
We believe meaningful development moves beyond reflection and conversation into practical action. Our work helps leaders and teams turn what they notice into clear next steps, better conversations and real shifts in how they lead, work and grow together.
We look at the full picture before drawing any conclusions. People, process, structure, systems. The presenting problem is rarely the whole story, and the right diagnosis matters more than a reactive solution.
The work is practical. We get into the room, understand what's actually happening, and help you move. We're not here to add complexity. We're here to reduce it.
Petra Siskos, Founder
Petra Siskos, Founder
Petra Siskos, Founder
Petra brings more than 20 years of senior experience across strategy, people, and operations. She has worked inside organisations across multiple sectors, and founded Anthiva to bring that operational depth to leaders who need more than a coaching conversation
Petra Siskos, Founder
Petra Siskos, Founder
Petra works with leaders and organisations across consulting, coaching, and advisory engagements.