Guillaume Maros

French British Global Business Development professional with 10+ years' experience building cross-border growth strategies and long-term B2B relationships in the UK and internationally. Proven track record of developing international propositions, activating ecosystems to support internationally mobile clients and businesses. Entrepreneurial, relationship-led and experienced in representing organisations externally through networking and strategic partnerships.

Head Of Development UK at ALTIOS INTERNATIONAL (2023-01 – Present)

Hired to restart business development activities as part of the reopening of the UK subsidiary of a global business development firm helping SMEs and Mid-cap companies to ramp up their international expansion and cross-border operations.

• Developing and executing the UK international business development strategy, supporting SMEs and Mid-Cap clients with overseas expansion and cross-border investments.
• Building and maintaining long-term relationships with international-facing clients, professional advisors and financial institutions.
• Establishing strategic acquisition partnerships with banks, mid-market private equity firms, law firms, trade bodies and advisory firms.
• Acting as UK ambassador at international events across Europe, representing the organisation to internationally mobile clients and stakeholders.
• Training relationship managers and partners to identify and refer to international client opportunities.
• Built and managed a UK client portfolio from zero, generating £250k revenue in 2024 and £325k in 2025.

Advisor at ELISYAN WEALTH VENTURES (2022 – 2022)

WealthTech App helping global citizens work more closely than ever with their advisors and be on top of their finances, at their fingertips, wherever they go. Technology to rack wealth cross-border and get the visibility they need to make better informed financial decisions efficiently, in a private way.

• Advisor to the Founder, leveraging an extensive network and industry ecosystems to drive awareness and support business development initiatives.
• Provided strategic advisory support to the Founder, facilitating key introductions and partnerships to accelerate growth.

UK Country Opener at TESSAN (2022-05 – 2022-12)

Recruited as the first employee to test the UK market for a French MedTech providing telemedicine solutions by integrating medical hardware and software technologies into plug-and-play booths

• Initiated a business development activity to test the receptiveness of the TESSAN value proposition to pharmacies in London (1,900 independents and chains) to enhance service offering in stores, and provide added value to private patients (3 units sold to independent pharmacists and 1 unit tested in one large chain as part of trial period).

Export Manager & UK Country Manager at AXEOS INTERNATIONAL (2015-04 – 2021-12)

Joined as a graduate to expand export activities and launch the UK presence of a French designer and manufacturer of premium office furniture solutions that seamlessly integrate visual collaboration technologies into workspaces, within decision-making environments such as videoconferencing rooms, boardrooms.

• Built and nurtured a network of added-value resellers and distributors in the UK, managed the exclusive partnership of a German distributor and furthered to other partners across western Europe and the Nordics - 40 strategic partners by prospecting, training, and supporting their sales and technical team, as the single point of contact and regular travel throughout the UK and Europe (generating revenue from scratch in the UK from 15K€ to 1M€ in 6 years).
• Influenced and created trustworthy relationships with demanding B2B corporate end-users by customising solutions to fit their business needs and deployed standardized solutions globally (Airbus, BCG, JP Morgan & Chase, SAP, EY).
• Generated upselling opportunities by networking with workspace technology companies and co-building bundles solutions

Master's Degree in International Business & Management – ISC PARIS BUSINESS SCHOOL (2014)