Job Description

Senior Full Stack Engineer - Agent Runtime & Platform

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Location

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Sydney, NSW, Australia

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Employment Type

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Full time

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Department

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What you'll do

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Own the agent sandbox runtime: provisioning, isolation, scheduling, lifecycle and cost per task at scale.

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Build and own platform services - identity plumbing, secrets, metering, object storage, workflow orchestration, and the tool/connector abstraction layer.

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Drive the observability stack from instrumentation through ingestion to the dashboard people actually open during an incident.

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Harden infrastructure against the failure modes that surface to users as "the agent got stuck", and keep the platform from becoming a bottleneck to growth.

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What we're looking for

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5+ years building and operating production backend systems and platforms.

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Deep AWS (we are CDK-first) and container orchestration understanding below the level of configuration - schedulers, runtimes and isolation boundaries.

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Python strength, plus enough front end to build the internal tooling your platform needs rather than waiting for someone else.

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A bias for simplicity and pragmatism over architecture for its own sake.

📌 Senior Full Stack Engineer - Agent Runtime & Platform (New South Wales)
🏢 NinjaTech AI
📍 New South Wales