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Evolutionary Optimisation - Member of Technical Staff

Callosum· Compute & Infrastructure
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LondonFull-timePosted 2mo ago

About the role

Role owning Callosum’s program evolution and optimisation loop: an LLM-guided search system that iteratively generates, evaluates, and improves programs against verifiable objectives across kernels, inference runtimes, scheduling and scaling policies, KV caching strategies, and more.

Responsibilities

  • Develop the core program evolution loop, improving how candidates are generated, evaluated, selected, and evolved over long optimisation runs
  • Design search strategies that balance exploration, exploitation, diversity, and sample efficiency across vast and irregular optimisation spaces
  • Build continuous benchmarks that measure the optimiser across internal workloads and standalone problems, making improvements and regressions empirically visible
  • Turn the system into reliable internal infrastructure that can optimise new verifiable domains as a reusable internal tool that other team members can scale to new problems

Qualifications

  • Strong foundations in optimisation and search, including familiarity with evolutionary, stochastic, combinatorial, or other non-gradient-based methods
  • Ability to reason about search itself i.e. exploration versus exploitation, diversity, pruning, objective design, and when different optimisation strategies are appropriate
  • Strong engineering instincts, with experience turning experimental systems into reusable, measurable, and reliable software
  • A demonstrable tendency to draw from techniques across optimisation, algorithms, and machine learning rather than treating LLMs as the solution to every problem

Skills

Required:optimisation and search methodssystem design and engineering
Nice to have:LSI/AI collaboration or ML integration

Benefits

  • Competitive Salary, determined by skills and experience
  • Equity & Ownership
  • Private healthcare
  • Visa sponsorship and relocation benefits to hire the best in the world
  • We work in person at our London office. You'll have the tools, space and setup to do your best work, and if you have specific needs, just tell us
Last updated Oct 14, 2026. Interested? Apply on the company site.

About Callosum

The Intelligent Systems Company.

Callosum - Co-evolving chips & intelligence

AISystems companychipscomputedevelopmentheadline-ai-europe-100-2026heterogeneousinfrastructure
Company profileWebsite

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