Iryna Lysenko (O’Reilly)

Biography

I help high-net-worth individuals, entrepreneurs, and family offices resolve complex, high-value disputes with discretion, strategy, and clarity.

With over 15 years of experience in commercial litigation and dispute resolution, I specialise in professional negligence claims, insurance disputes, and shareholder and contractual conflicts. Clients turn to me when trust breaks down, delays create risk, or reputations are on the line. They value not only my legal precision but also the calm, commercial judgment I bring when it matters most.

I am a Partner at Spencer West LLP, a leading global full-service law firm. Within the Spencer West platform, I lead Otera Law — a professional service provider (formerly an authorised and regulated firm) — delivering focused, high-level dispute resolution under the Spencer West brand and regulatory umbrella. Clients engage me through Spencer West, which embodies the ethos, structure, and service style I have built over years in practice.

I founded Otera Law to challenge traditional legal services by combining strategy, clarity, and discretion at moments where outcomes matter more than process. That philosophy continues today, supported by Spencer West’s scale and strength.

My track record
Landmark litigation: I’ve led high-profile, high-stakes cases to successful resolution, delivering standout results in complex disputes. My strategic thinking and technical precision give clients confidence, no matter the challenge.

Resolving complex disputes: I deliver bespoke legal solutions aligned with commercial priorities. My pragmatic, results-focused approach drives favourable outcomes across diverse industries.

Building trusted relationships: I focus on clarity and connection. By understanding what matters to each client, I build long-term partnerships grounded in