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Senior Product Engineer

Kernel· Engineering
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London£110k - £150kFull-timePosted today

About the role

T-shaped product engineer with a spike in backend engineering. Build user-facing features, ship rapidly, and support scalable infrastructure while collaborating cross-functionally. Opportunity to help grow Kernel from $3M to $30M ARR, owning end-to-end projects from ideation to deployment.

Responsibilities

  • Designing and developing product features that directly impact user workflows
  • Collaborating with design, product, and other engineers to deliver exceptional user experiences
  • Writing and maintaining clean, reliable, and scalable code across the stack
  • Helping ensure performance and reliability for large-scale data operations
  • Automating workflows to improve developer velocity and reduce manual work
  • Supporting integrations with CRMs and third-party APIs
  • Participating in roadmap discussions and contributing technical insights

Qualifications

  • 6+ years of software or product engineering experience
  • Strong experience building and scaling production systems
  • Comfort with backend engineering (NodeJS, Postgres, TypeScript)
  • Strong understanding of LLM application development patterns (RAG, prompt engineering, consistency testing)
  • Ability to operate autonomously in a small, high-velocity team
  • Excellent communication and collaboration skills
  • Some experience with Kubernetes or distributed systems

Skills

Required:NodeJSTypeScriptPostgresLLM application development (RAG, prompt engineering)
Nice to have:Kubernetes

Benefits

  • Salary: £110,000 – £150,000 + equity
  • 24 days holiday per year + bank holidays
  • £450 Monthly Office Dinner Allowance
  • 2 weeks work-from-anywhere
  • Generous parental leave policy
  • Pension plan
  • Top-spec equipment and central London office
  • Team events and dinners
  • Work directly with the founders to scale the systems that power enterprise AI
  • High-autonomy, high-trust environment with a small team shipping at pace
Last updated Oct 26, 2026. Interested? Apply on the company site.

About Kernel

Kernel · Accurate entity data, guaranteed.

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