After the war was over, Finlay was assigned to work in Geneva with the language interpretation unit for the League of Nations in 1919 as a bilingual précis-writer at the newly formed
International Labour Organization (ILO). Not content with translation alone, he left the commission in the same year and spent the next five years travelling around Europe, giving lectures on physics and doing consultancy work designing scientific instruments for manufacture. In March 1926, Finlay returned to the League of Nations in Geneva with high hopes of an appointment as General Registrar. His wife was six months pregnant, which encouraged Finlay to think about settling down to a career that combined his passion for science with his language skills as a communicator and a leader. Initially, he was only able to get his old job back at the
ILO as a précis-writer on successive short-term contracts. Finlay's opportunity for advancement came in April 1927 when he identified critical weaknesses in an experimental telephonic translation system being trialled at the ILO. He diagnosed the problems with the system, suggested some key alterations with cost estimates and concluded with a plan for doing the work. fitted with "pneumatic ear pads", circa 1927 – ILO Historical Archives By June, Finlay was appointed to take responsibility for the technical delivery of the system. His plans were submitted to
Edward Filene, a wealthy, well-connected, philanthropic, American entrepreneur who had devised the original telephonic concept and had been underwriting the costs of development. Tests went well and by September 1927, Filene approved a budget of $10,000 to train interpreters and install Finlay's new designs. Finlay collaborated with the
Bell Telephone Company to manufacture component parts, including his own innovations like the
Stethophone and for the first time, automatic voice recording. By the spring of 1928, press releases announced ground-breaking new developments evolved by an "English Scientist attached to the
International Labour Office" (ILO), referred to as
Professor Gordon-Finlay, who was addressing a number of technical issues which needed resolving. The number of "receiver" delegates had increased from one hundred to five hundred, with the number of languages from two to six and was tested in June 1928 at the 11th
International Labour Conference under Finlay's direction. Despite doubts going in, the conference proved a success and crucially, demonstrating significant cost savings by shortening proceedings. That proof-of-concept was picked up at the
Nuremberg Trials almost twenty years later and arguably lead to the interpretation systems in use today. Finlay had worked tirelessly to develop and deploy solutions, which was recognised and by 1929, the system had proved both successful and popular, particularly amongst delegates unfamiliar with the two official languages, and began featuring at multiple conferences. ILO historical records indicate that Finlay never had permanent employment with the League of Nations, constantly working under short-term contracts. From 1926 to 1929, his pay was underwritten by Filene, which dried up with the
Wall Street crash of 1929. Finlay left the ILO at the end of September 1929. He was, without question, the technical engine behind the new system (Filene had no technical background) but in May 1930, Filene filed a patent for his original concept including Finlay's innovations, but with himself as sole "inventor", excluding Finlay from the application, which IBM subsequently purchased. Finlay was an intensely charismatic man who lead from the front, successfully delivering, and more, on all his extravagant promises made in 1927. Focused as he was on technical delivery, he was naive in the ways of business and had nothing material to show for his efforts at the League of Nations. The world had already moved on, however. ==Second World War==