The agency - owned by parent network Hill & Knowlton - is hoping to access the European market, using the UK bureau as a hub for the region.
B&O UK is headed by former Firefly associate director Zena Martin as MD based in London. Martin will be joined by Simon Glazer - also an ex-Firefly consultant - as deputy MD. Glazer was previously a senior associate director at H&K in the London-based corporate tech practice.
The UK office is positioning itself as a consultancy for start-up tech firms across Europe, drawing on its 18 years of experience in the US tech sector.
Martin said: 'The tech industry needs a comms makeover. B&O has just one mission: to spice up UK tech firms so that they can penetrate new markets worldwide.'