Jascha Achterberg
Co-founder of Callosum, the Cambridge chip-interoperability startup backed by the UK Sovereign AI Fund.
Last refreshed: 19 April 2026 · Appears in 1 active topic
What chip architecture problem are Callosum and Jascha Achterberg trying to solve?
Timeline for Jascha Achterberg
Mentioned in: UK names first Sovereign AI investees
European Tech Sovereignty- Who is Jascha Achterberg?
- Co-founder of Callosum, a Cambridge PhD who co-built the chip-interoperability startup that received a UK Sovereign AI Fund equity stake in April 2026.Source: UK DSIT 16 April 2026
- What is Callosum and what problem does it solve?
- Callosum builds software enabling heterogeneous chip architectures — Nvidia, AMD, Intel, European silicon — to interoperate, reducing AI vendor lock-in at the infrastructure layer.Source: UK DSIT 16 April 2026
Background
Jascha Achterberg co-founded Callosum alongside Danyal Akarca, both Cambridge PhD graduates. Callosum received a direct equity investment from the UK Sovereign AI Fund on 16 April 2026, the only equity stake in the programme's first tranche, alongside compute access grants for six other companies . The company's focus is software enabling diverse chip architectures to interoperate — a foundational problem for European sovereign AI infrastructure that operates mixed hardware fleets.
As with co-founder Danyal Akarca, Achterberg has no substantial independent public profile in trade or tech media as of April 2026. Both founders are identified primarily through the DSIT announcement and their Cambridge PhD credentials.
Callosum's equity backing positions Achterberg and Akarca as the infrastructure tier of the UK sovereign AI portfolio: if the six compute-access companies build applications, Callosum builds the plumbing that lets those applications run on non-US silicon at scale .
