SiXworks

SiXworks is a British provider of secure digital solutions for high-security environments, working primarily with Defence and National Security customers. Founded in 2017 and headquartered in Farnborough, the company has been part of IBM since 2024. Its work spans secure cloud infrastructure, cross-domain security systems, multi-source data platforms and high-performance computing for AI/ML applications.

The company's stated focus is digital experimentation and what it terms "fail-safe-fast" development: moving quickly from proof of concept to live service while maintaining high assurance. SiXworks reports having successfully navigated this transition, often described in the sector as the "Valley of Death" between prototype and operational deployment. Its engineering approach is built around secure-by-design principles, Zero Trust architecture and Data-Centric architecture, alongside cyber vulnerability mitigation and advanced network infrastructure.

SiXworks operates in the Defence, National Security and wider government and public sector verticals. The firm describes its posture as constructively disruptive, with an emphasis on delivering technology with measurable operational impact. Beyond its Farnborough base, its presence is concentrated in the United Kingdom, though its ownership by IBM places it within a larger international technology group.