Senior Software Engineer, Chem-Bio at AI Security Institute | London | Rezi

Senior Software Engineer, Chem-Bio at AI Security Institute

Senior Software Engineer, Chem-Bio

AI Security Institute · London

Yesterday

Senior Software Engineer, Chem-Bio

AI Security Institute · London

a day ago
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About the Role

The AI Security Institute is seeking a senior individual contributor to join its dedicated engineering function within the Chem Bio (CB) team. This role will focus on designing, building, and maintaining the shared platform, tooling, and infrastructure that support critical AI research projects related to advanced AI risks and chemical/biological misuse.

Responsibilities

  • Design and build reliable systems, architecting and delivering core platform components for researcher experiments and results.
  • Translate varied research needs into well-engineered, maintainable systems.
  • Own and deliver significant engineering work, driving projects from design through maintenance.
  • Write high-quality production code in Python, emphasizing testing, documentation, and observability.
  • Contribute to engineering standards and practices to improve code quality and development workflows.
  • Collaborate with other technical teams to share tooling and align on infrastructure.
  • Support technical direction through architectural decisions and infrastructure improvements.
  • Mentor other engineers through technical leadership, collaboration, code review, and knowledge sharing.

Requirements

  • Significant experience writing production-level Python code that is scalable, robust, and easy to maintain.
  • Strong infrastructure and platform skills, including experience with cloud environments (AWS), container orchestration (Kubernetes), and job scheduling (Slurm or similar).
  • Experience owning technical projects or major systems as a senior individual contributor.
  • Familiarity with the AI/ML ecosystem, including OpenAI-compatible APIs, PyTorch, and LLM-based systems tooling.
  • Ability to work across multiple teams, understand varied research needs, and deliver reliable engineering solutions.
  • A sense of mission, urgency, and responsibility for success, with a demonstrated ability to solve challenging problems and implement solutions efficiently.
  • Motivated to build software with direct policy impact.
  • Strong communication skills for effective collaboration in a dynamic, multidisciplinary team.
  • Experience working in a research environment is a plus.
  • Familiarity with computational biology tools, workflows, or datasets is a plus.
  • Experience building or maintaining internal developer platforms, shared libraries, or CI/CD systems is a plus.
  • Must be a UK national.
  • Must be able to spend at least 9 days per fortnight working with the team.
  • Must be willing to work from the London office at least 3 days/week.
  • Must be UK-based.

Skills

  • Python
  • AWS
  • Kubernetes
  • Slurm
  • OpenAI-compatible APIs
  • PyTorch
  • LLM-based systems

Location

  • London (Whitehall)
  • Birmingham
  • Cardiff
  • Darlington
  • Edinburgh
  • Salford
  • Bristol

Work Type

  • Hybrid
  • Full-time

Experience Level

  • Senior Individual Contributor

Salary/Compensations

  • £65,000–£145,000 (Level 3: £65,000–£75,000, Level 4: £85,000–£95,000, Level 5: £105,000–£115,000, Level 6: £125,000–£135,000, Level 7: £145,000)

Benefits

  • Pre-release access to multiple frontier models and ample compute.
  • Extensive operational support.
  • Work with experts across national security, policy, AI research and adjacent sciences.
  • 5 days off and annual stipends for learning and development.
  • Funding for conferences and external collaborations.
  • Opportunities to publish and collaborate externally.
  • Modern central London office with amenities (cafes, food court, gym).
  • Option to work in similar government offices in Birmingham, Cardiff, Darlington, Edinburgh, Salford or Bristol.
  • Flexibility for occasional remote work abroad.
  • Stipends for work-from-home equipment.
  • At least 25 days’ annual leave, 8 public holidays, extra team-wide breaks and 3 days off for volunteering.
  • Generous paid parental leave (36 weeks statutory + 3 extra paid weeks + option for additional unpaid time).
  • 28.97% employer pension contribution on base salary.
  • Discounts and benefits for cycling to work, donations and retail/gyms.

About the Company

  • The AI Security Institute is the world's largest and best-funded team dedicated to understanding advanced AI risks and translating that knowledge into action.
  • We are in the heart of the UK government with direct lines to No. 10 (the Prime Minister's office), and we work with frontier developers and governments globally.
  • AISI's Chem Bio (CB) team conducts technical research to assess evolving AI capabilities related to science R&D and CB misuse, and the effectiveness of technical safeguards.
  • The goal of our research is to inform critical decisions on security, opportunities, policy, and risk mitigation made by governments and AI developers.
  • We are a close-knit, unusually interdisciplinary team made up of researchers and specialists from various fields.

Equal Opportunity

  • The Civil Service embraces diversity and promotes equal opportunities.
  • We run a Disability Confident Scheme (DCS) for candidates with disabilities who meet the minimum selection criteria.
  • The Civil Service also offers a Redeployment Interview Scheme to civil servants who are at risk of redundancy and meet the minimum requirements.
  • The Civil Service is committed to attract, retain and invest in talent wherever it is found.
  • As part of the application process, we monitor statistics on D&I.