Outside IR35

Principal Engineer

Posted by La Fosse Associates • June 06, 2026

📍 Australia, Victoria, Australia
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Description

Principal Engineer – £650 outside IR35 – Hybrid (London office, twice a week)

La Fosse has partnered with an established business to recruit a Contract Principal Engineer to join their team. This role is heavily focused on architectural system design, taking ownership of shaping scalable, integration led platforms across a complex technology landscape. You will play a key role in defining and driving technical strategy.

Key Requirements

  • Strong experience in TypeScript (Node.js/React environment)

  • Solid knowledge of AWS (EKS, Lambda, Aurora RDS)

  • Hands-on experience with Kubernetes in cloud-native environments

  • Proven ability building GraphQL & REST APIs

  • Experience with event-driven architectures (Kafka advantageous)

  • Exposure to CI/CD pipelines (GitHub Actions preferred)

  • Experience with monitoring tools (e.g., DataDog)

  • Strong background in system integrations, particularly with Sale...
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