OptiTalent · Job Finder
Jobs
11 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.
1–11 of 11 jobs
Counts are paused for a minute after many searches; results are still current.
Security Lead - Member of Technical Staff
2 months agoCallosum · London, England, United Kingdom
On-siteFull-timeLead / staffSecurityCallosum operates across a broad technical surface: APIs used by customers directly, orchestration software deployed across heterogeneous clusters, agentic systems with access to tools and data, and physical compute infrastructure that we operate ourselves. These products run…
Callosum · London, England, United Kingdom
On-siteFull-timeLead / staffEngineeringCallosum believes that orders of magnitude improvements in AI systems will come through application-aware orchestration across heterogeneous models and hardware. Our team is developing the science that makes that possible: a principled, evidence-based method for building…
Callosum · London, England, United Kingdom
On-siteFull-timeLead / staffMost agent frameworks are designed for short-lived workflows, best-effort execution, and a narrow set of tools. Callosum is building for a different world: agents that run for weeks, operate across distributed infrastructure, and interact with stateful systems where failures,…
ML Research Engineer - Member of Technical Staff
2 months agoCallosum · London, England, United Kingdom
On-siteFull-timeLead / staffData & AICallosum believes that orders of magnitude improvements in AI systems will come through application-aware orchestration across heterogeneous models and hardware. Our team is developing the science that makes that possible: a principled, evidence-based method for building…
Callosum · London, England, United Kingdom
On-siteFull-timeLead / staffEngineeringCallosum believes that the next generation of AI systems will be co-optimised across models, software, and hardware. As we operate across increasingly heterogeneous workloads and accelerators, the number of possible system configurations grows combinatorially. Manually…
Callosum · London, England, United Kingdom
On-siteFull-timeLead / staffEngineeringChoosing between algorithmic strategies for multi-step LLM work is a measurement problem, and most teams solve it badly: comparisons run case by case, by whoever needs them that week, on whatever task is closest to hand. That doesn't scale, and it doesn't hold up to outside…
Callosum · London, England, United Kingdom
On-siteFull-timeLead / staffEngineeringCallosum believes that orders of magnitude improvements in AI systems will come through application-aware orchestration across heterogeneous hardware. As workloads become increasingly disaggregated, the performance of the system is determined not only by where computation…
Callosum · London, England, United Kingdom
On-siteFull-timeLead / staffEngineeringCallosum believes that orders of magnitude improvements in AI systems will come through application-aware orchestration across heterogeneous hardware. We are building that vision: infrastructure that treats the full landscape of compute as a unified, co-evolving system, evolved…
Callosum · London, England, United Kingdom
On-siteFull-timeLead / staffEngineeringCallosum believes that orders of magnitude improvements in AI systems will come through application-aware orchestration across heterogeneous hardware. We are building that vision: infrastructure that treats the full landscape of compute as a unified, co-evolving system, evolved…
Callosum · London, England, United Kingdom
On-siteFull-timeLead / staffEngineeringCallosum believes that orders of magnitude improvements in AI systems will come through application-aware orchestration across heterogeneous hardware. We are building that vision: infrastructure that treats the full landscape of compute as a unified, co-evolving system.…
Callosum · London, England, United Kingdom
On-siteFull-timeEngineeringWe’re living through a Cambrian explosion of intelligence: new models and new chips, each specialised for different tasks, are arriving all at once. The result is a new era for AI, one of radical heterogeneity.
Updated 07 Nov 2026 10:21 UTC from the OptiTalent job library.