Senior Fullstack Engineer - AI-Native Ways

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At Oak North, we're building a bank for ambitious businesses, and we believe the next step-change in how we build software comes from AI-native engineering.

The AI Enablement team exists to help product and engineering teams across the bank adopt AI practices and tools safely, effectively, and at scale, accelerating time-to-market while maintaining our high bar for quality, security, and reliability.

This is a senior, hands‑on engineering role for people who already build with AI as part of their daily workflow and want to help others do the same.

• The AI Enablement team multiplies impact across Oak North primarily:
• As enablers, we partner with product and engineering teams to adopt AI practices and tools safely and effectively by building internal platforms, agents, and workflows that eliminate friction and accelerate delivery throughout the software development lifecycle.
• As builders, we experiment with and ship AI‑native product features across Oak North's product portfolio. Proving what's possible, establishing patterns, and moving fast without a long‑term ownership burden.
• In everything we do, we establish safe, governed, and scalable patterns for AI adoption across the bank. We learn fast and help others learn faster. Our success is measured by how effectively we accelerate software delivery across the organisation through AI‑native ways of working.

• As a Senior AI‑Native Engineer, you will design, build, and operate AI‑powered systems that directly improve how software is developed and operated  this level, you'll operate with significant autonomy, shape solutions end‑to‑end, and influence AI adoption across multiple teams.
• You will:
• Build production‑grade AI tools and agents that support the full development lifecycle:
  • Product ideation and discovery
  • Technical specification review and early feedback
  • Code generation, refactoring, and review
  • Documentation generation and maintenance
  • Test generation and quality validation
  • Observability, log analysis, and incident support
• Ship AI‑native product features for core Oak North products:
  • Experiment with AI‑powered capabilities across our product portfolio
  • Move from concept to production quickly, proving what’s possible
  • Establish reusable patterns and hand off to product teams for long‑term ownership
  • Balance rapid experimentation with production‑quality delivery
• Deliver AI‑enabled workflows end‑to‑end
  , such as:
  • Agents that inspect logs and metrics to surface bugs, risks, or performance issues
  • Automated pull requests with proposed fixes or improvements
  • AI‑assisted review of design documents and architectural decisions
• Own initiatives from discovery to adoption
  : problem framing – solution design – implementation – rollout – measuring impact
• Partner with product and engineering teams to embed AI tools into daily workflows, ensuring real adoption and measurable outcomes
• Define standards and guardrails for AI usage in a regulated, security‑conscious environment
• Raise AI fluency across the organisation by sharing learnings, patterns, and examples that help others level up

• Strong engineering fundamentals
• 5+ years building and operating production systems
• Comfortable working full‑stack or with deep expertise in backend/platform engineering
• Proven track record in designing and building systems used by other engineers
• Strong product mindset: you measure success by outcomes and adoption, not just output
• Skilled at rapid experimentation: you're comfortable with uncertainty, test ideas by shipping quick prototypes, and learn as much from failures as successes
• Skilled at breaking down ambiguous problems into practical, scalable solutions
• Already AI‑native
• You're already in the habit of:
  • Using AI tools daily to accelerate your work (coding, debugging, reviews, documentation)
  • Treating AI as a collaborator in your workflow, not a novelty
  • Thinking in terms of agents, workflows, and automation
  • Iterating quickly: experiment – learn – refine – scale
• You've experienced firsthand how AI‑native tools transform productivity, tools like Cursor, Claude Code, ChatGPT, Lovable,…