We're looking for a Principal Developer to serve as a technical beacon for a growing engineering organisation at a major enterprise, with the best daily rates on offer.

You’ll own the architectural integrity, scalability and developer experience of the core platforms: a role built for a systems thinker who thrives on solving “impossible” distributed systems problems while staying pragmatically focused on product delivery.

You’ll lead the adoption of modern workflow orchestration (Temporal.io), drive the JVM-based service strategy, and ensure the cloud-native infrastructure on GCP is world‑class.

What You’ll Be Doing
Design and evolve complex, event-driven architectures supporting high-scale data processing and reliable business logic
Act as subject matter expert for message-oriented architectures, designing resilient, long-running processes and educating the team on stateful workflow patterns
Set the gold standard for development in Kotlin and Java, ensuring services are performant, observable and maintainable
Guide the integration between robust JVM backends and modern React/TypeScript front ends, ensuring a seamless, typed end-to-end developer experience




Standardise and optimise the GCP environment (GKE, Postgres, BigQuery), and mature CI/CD pipelines via GitHub Actions

What You’ll Bring
Deep expertise in Kotlin and/or Java, with a robust grasp of JVM nuances, concurrency models and contemporary frameworks (Micronaut, Spring Boot, or Ktor)
Robust proficiency in TypeScript and React, with the ability to build scalable UI components and manage complex state
Expert‑level knowledge of message‑oriented architectures — Temporal.io experience highly prized, or equivalent knowledge of Pub/Sub, Kafka, Cadence or Airflow
Hands‑on GCP experience, specifically Kubernetes (GKE), Cloud SQL (Postgres) and BigQuery for data-driven insights
A genuine DevOps mindset — "you build it, you run it" — with expert Git skills and experience automating delivery workflows via GitHub Actions
Typically, 10+ years in software engineering, with recent experience at Principal, Staff or Technical Lead level within a high‑growth SaaS or product‑led company

Ready to be the technical beacon a growing engineering team can build around?
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📌 Principal Developer Kotlin, Gcp, Distributed Systems New South Wales
🏢 Torch Professional Services
📍 New South Wales