Sofia 50 - 300 employees


About us was formed in June 2023 through the merger of Finsemble and Glue42 to create a global powerhouse driving application interoperability in capital markets and beyond.’s mission is to build on the basic application connectivity standards provided by FDC3 and turn these into highly efficient, game-changing Straight-Through workflows. This means that our clients benefit from unparalleled levels of business agility, a more productive workforce and better operational control. brings together the award-winning technologies of both companies to offer a suite of io. products. At the core is io.Connect, which enables clients to build and deploy highly intuitive front ends that bring different applications and functionality into a single, harmonized smart desktop. In this way, the boundaries between different applications are dissolved and users are free to focus on higher-value tasks. is headquartered in the USA with over 110 full-time R&D engineers based in New York, London and Sofia. Its clients include buy sides, sell sides and technology vendors such as Citi, Fidelity, Instinet, Millennium, JP Morgan, Broadridge, Factset and IRESS.

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