Senior Full Stack Engineer - AI-Powered Solutions

About the Role

We're looking for a Senior Full Stack Engineer to join our dynamic team at Kernel, where you will work on innovative AI-powered solutions. As a Senior Full Stack Engineer remote, you will play a critical role in shaping our back-end infrastructure while collaborating closely with product and engineering teams.

What You’ll Be Doing

• Owning and scaling Kernel’s back-end infrastructure (AWS, NodeJS, Postgres, n8n).
• Designing systems that process millions of accounts, terabytes of data, and thousands of parallel executions.
• Building reliable, scalable data pipelines and services for enterprise customers.
• Rapidly shipping features to users and our internal team.
• Continuously evaluating code, infrastructure, and processes to find improvements.
• Automating manual processes to increase speed and reliability.
• Sharing feedback on roadmap direction and ideas on bets to place and potential solutions.

Requirements

• 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.

Nice to Have

• Experience working on AI-driven or data-heavy products.
• Frontend experience (NextJS, React, TypeScript).
• Understanding of CRM data models or workflow automation.

What We Offer

• Salary: £110,000 – £170,000 + equity.
• 24 days holiday per year + bank holidays.
• 2 weeks work-from-anywhere.
• Pension plan.
• Top-spec equipment and central London office.
• Free dinner at the office.
• Team events and dinners.
• Work directly with the founders to scale the systems that power enterprise AI.