# Leslie Spiro

> Leslie Spiro is the co-founder and CEO of interop.io, formed by the June 2023 merger of Glue42 and Finsemble. His career spans Reuters workstations, real-time market data, derivatives trading technology and application interoperability. He co-founded Tick42 and advocates open standards and software that supports people working across multiple applications.

- **Role:** Co-founder and CEO at interop.io
- **Organizations:** interop.io, Glue42, Tick42, SD&C (Software Design and Construction), Dealing Object Technology, EasyScreen, Tradeplex, Pirinsoft Bulgaria, Reuters, FINOS, OpenMama
- **Education:** MBA, London Business School
- **Known for:** Co-founded the business that delivered Reuters’ first Windows-based workstation., Jointly created the RTT real-time market-data platform at Dealing Object Technology., Co-founded EasyScreen, which floated on the London Stock Exchange.

## Career timeline

- **1987** — Worked as a consultant at Reuters.
- **1989** — Co-founded SD&C, which delivered Reuters’ first Windows-based workstation.
- **1996-2012** — CEO of Dealing Object Technology, working on real-time trading technology.
- **1998-2000** — CTO and co-founder of EasyScreen, a derivatives-trading company that floated on the London Stock Exchange.
- **2002-2005** — CTO of Tradeplex.
- **2010** — Co-founded Tick42 with Stoyan Damov and Lubo Konstantinov.
- **2012** — JPMorgan integration engagement provided the origins of Glue42 Enterprise.
- **2017** — Presented Glue for Office at Bulgaria Web Summit.
- **2023** — Became CEO of interop.io following the June merger of Glue42 and Finsemble.
- **2026** — Published an argument for connecting AI responses to users’ existing working applications.

## Achievements

- Co-founded the business that delivered Reuters’ first Windows-based workstation.
- Jointly created the RTT real-time market-data platform at Dealing Object Technology.
- Co-founded EasyScreen, which floated on the London Stock Exchange.
- Co-founded Tick42 and led Glue42 before becoming CEO of interop.io.
- Participated in FINOS FDC3 and Desktop Services work and served on the OpenMama steering committee, as recorded in his FINOS biography.

## Latest updates

- **2026-07** — Published Bring Context to the User, Not Just the Model on July 6, advocating click-to-sync between AI answers and working applications.
- **2025-12** — Published a LinkedIn essay on Microsoft Copilot and the lessons of earlier Microsoft interoperability technology.
- **2025-10** — Opened interop.io’s New York client forum with an emphasis on partnership, according to the October 30 recap.

## Links

- Website: https://interop.io/
- LinkedIn: https://www.linkedin.com/in/leslie-spiro-b821711

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Profile page: https://yespress.io/leslie-spiro
Published by YesPress — https://yespress.io
Last updated: 2026-10-21