Atanas Dobrev is Co-Founder and COO at Quillon, an AI platform for audit-grade technical accounting and financial reporting. He studied Informatics and Mathematics at Sofia University and is a top 5 algorithmic competitor in Bulgaria.

Before co-founding Quillon in 2023, Atanas served as Vice President at Citibank where he built their Large Language Model foundations. He was also a key developer for the National Revenue Agency Electronic Services in Bulgaria.

Atanas brings deep expertise in algorithmic problem-solving and AI systems development. His background spans both financial services technology and government digital infrastructure.

Quillon raised $1.5 million in pre-seed funding led by 42CAP with participation from angel investors at NVIDIA and Roblox. The company operates between Sofia and San Francisco, serving US public companies and auditors.

Quillon addresses a critical gap in technical accounting by providing AI-powered tools that ensure every output is traceable to exact accounting standards. The platform automates technical accounting memos that underpin financial reporting for public companies.