Mobius

Captain: George Vallis (Greek)

Captain George Vallis is an experienced Master Mariner (Captain Class A – Unlimited) with over 15 years of progressive leadership in the maritime and yachting industry. He has commanded private and commercial yachts up to 50 meters, demonstrating exceptional capabilities in yacht operations, safety management, crew leadership, and logistics. He holds an MBA in Shipping and Maritime Operations (2024) and is the President of the Panhellenic Union of Private & Professional Yacht Crew. His background includes extensive seagoing service, refit supervision, and formal training in safety, navigation, GMDSS, ECDIS, and security operations. Fluent in English, he combines technical expertise with strong organizational and communication skills.

Chief Engineer: Christos Papathanasiou (Greek)

Christos was born in 1988 in Berlin, Germany and holds an Engineer Class A’ Certificate of Competency. He is a highly experienced Merchant Marine Chief Engineer with many years of service across commercial ferries, tankers, tugs and luxury yachts (such as M/Y Le Verseau, M/Y Duke, M/Y Vela, M/Y Ghost, M/Y Riva 1) up to 50 meters. His career has taken him through senior engineering positions, most recently serving as Chief Engineer on various private and commercial yachts, where he is responsible for the safe and efficient operation of all engine room systems, maintenance planning, repairs and dry dock procedures. With a strong technical background and excellent problem-solving skills, he ensures the yacht is always operating at the highest standards while maintaining full compliance with safety regulations and owner requirements. He is known for his professional attitude, reliability under pressure and strong work ethic, as well as his ability to work seamlessly within multicultural crews. In his free time, he enjoys sports, computers and engineering-related projects. He speaks Greek, English and German fluently.

Chef: George Vlachos (Greek)

George Vlachos is an experienced Chef with a strong background in luxury yachting, fine dining restaurants, and hospitality venues in Greece. He has worked onboard private and charter motor yachts ranging from 37m to 80m, delivering high-quality culinary experiences in demanding environments.
He is specialized in Greek, Italian, French, and Japanese cuisine, with expertise in tropical fusion seafood, Mediterranean dishes, desserts, vegetarian menus, and special dietary requirements. Known for his consistency, creativity, and attention to detail, he maintains high standards of quality, hygiene, and presentation. His yachting experience includes roles as Chef onboard M/Y Blue Princess (37m), M/Y Cacouna (40m), and M/Y Sapphire (80m). On land, he has worked in restaurants and hospitality venues in Santorini, Mykonos, Athens, and Crete, gaining broad experience in both fine dining and high-volume kitchens. He is a reliable, hardworking professional with strong organizational skills and the ability to perform effectively both independently and within a team. He speaks Greek and English.

Chief Stewardess: Nikoletta Pazara (Greek)

Nikoletta is dedicated to ensure guests' well-being, comfort and safety. She has worked as Chief stewardess in many luxury motor yachts and won 1st prize at Tablescaping competition at MEDYS 2023 - her patience and hard work are her basic characteristics. Nikoletta is also a volunteer of sport lifesaving and worked as a safeguard in many maritime events such as triathlon and championships around Greece. She is an easy going personality with great organizational and communication skills. She Iikes Greek folk dances and is also a professional barista. Nikoletta speaks Greek, English, French and is a beginner in Russian.

Stewardess: Oleksandra (Sasa) Bilanenko (Ukrainian)

Sasa was born in 1986 and holds a Master of Mechanics Materials Engineer. She has worked as a flight attendant for many years, but her passion for sea leaded her to the yachting industry. With her pleasant, kind and creative personality she promises to her guests a great experience onboard! In her free time, she likes working out and spending time with her family. She speaks Ukrainian and English.

Deckhand/Sailor: Miltiadis Zisis (Greek)

Miltiadis is a Greek maritime professional based in Athens with extensive experience as a deckhand on passenger vessels and yachts. He is safety-focused, reliable and hardworking, with strong teamwork and adaptability in demanding onboard environments.
He has completed full maritime training at GMC Maritime Training Center & Maritime Academy, including Basic Training, Advanced Firefighting, Survival Craft & Rescue Boats, Medical First Aid and Security Duties. He also holds a Seafarer’s License and a Vocational Diploma in Business Administration.
His professional experience includes long-term positions onboard SILY, Tropicana, Cacouna, Daneri Lux and Natalia V. He is experienced in deck operations, maintenance, safety procedures and guest support.
Miltiadis is disciplined, cooperative and customer-oriented. He speaks Greek and English.