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From the employer's careers site First seen 18 Apr 2026 · Still live on 14 Nov 2026

Senior Software Engineer, Backend (AI Agent Runtime)

Cresta Canada (Remote) Remote senior full-time

The employer hasn't listed a salary.

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Description

Build real-time AI agent infrastructure: Design and operate the stateful, low-latency runtime that powers voice and chat AI agents , from LLM streaming and conversation state management to graceful recovery and multi-channel support.

Solve distributed systems problems: Own session management across scaled-out workers , including affinity, checkpointing, crash recovery, and consistency under concurrent access.

Build a function execution platform: Own a serverless-style runtime where customers deploy custom logic , build orchestration, container lifecycle, autoscaling, and versioned rollouts.

Own developer experience and test infrastructure: Build CLI tools, local development environments, and test execution frameworks that let engineers iterate quickly and ship with confidence.

Raise the bar on production quality: Drive observability, incident response, and engineering best practices across the team.

We're looking for a senior software engineer with 5+ years of experience in infrastructure, platform, or systems work. You should have strong Python and Go skills, as well as a deep understanding of distributed systems, consistency, fault tolerance, state management, and concurrency.

Experience with Kubernetes and cloud-native infrastructure is also required. You should be able to build developer-facing tooling, such as CLIs, SDKs, local dev environments, or internal platforms.

A high bar for code quality, thorough testing, thoughtful code review, and sustainable engineering practices are essential. You should be comfortable operating what you build, on-call, incident response, and production ownership.

AI-native workflow is a must, and you should actively use LLMs and AI-assisted tools in your daily development.

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Skills

Required

Nice to have

  • LLMs
  • AI-assisted tools
  • Real-time voice or streaming media systems
  • Hands-on with LLM integration
  • Serverless or function-as-a-service platforms
  • Workflow engines
  • Infrastructure-as-code and GitOps workflows

Ready to apply?

You apply with the employer directly. Their original posting is here: https://job-boards.greenhouse.io/cresta/jobs/4675293008

Apply on Cresta