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Cresta

Senior Software Engineer, Backend (AI Agent Runtime)

Cresta · Canada (Remote)

Posted about 3 months ago

or apply directly on Cresta's site. We never take the application ourselves.

Is this posting real?

This role has been open
80 days
Cresta's roles stay open a median of 80 days
Reposted
No
Salary listed
No
45% of Cresta's roles list one
Ghost-job risk at Cresta
high
94 stale, 1 reposted of 95 open
Hiring momentum
118 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-22

Measured from postings appearing on and disappearing from Cresta's own greenhouse board since 2026-08-03. Full hiring picture for Cresta.

About this role

In this role, you will design and operate the real-time AI agent infrastructure, focusing on low-latency runtime for voice and chat AI agents. You will tackle distributed systems challenges, build a serverless function execution platform, and enhance developer experience through tooling and test infrastructure. Additionally, you'll be responsible for maintaining high production quality and driving engineering best practices within the team.

Our read on this posting3.0out of 5
benefits
4/5
freshness
1/5
career value
5/5
role clarity
5/5
pay transparency
0/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Cresta as an employer.

What you need

  • 5+ years of software engineering experience, with meaningful time spent on infrastructure, platform, or systems work
  • Strong Python and Go programming skills
  • Deep understanding of distributed systems including consistency, fault tolerance, state management, and concurrency
  • Experience with Kubernetes and cloud-native infrastructure
  • Experience building developer-facing tooling such as CLIs, SDKs, or local dev environments
  • Strong communication skills for driving technical decisions and mentoring

Nice to have

  • Experience with real-time voice or streaming media systems
  • Hands-on experience with LLM integration
  • Experience building serverless or function-as-a-service platforms
  • Familiarity with workflow engines like Temporal, Argo, or Airflow
  • Experience in conversational AI or speech domains

What you get

  • Variety of medical, dental, and vision plans
  • Paid parental leave
  • Monthly Health & Wellness allowance
  • Work from home office stipend
  • Lunch reimbursement for in-office employees
  • 3 weeks PTO in Canada

Worth weighing

  • No specific salary range listed, compensation is based on candidate-specific factors
  • Role requires on-call responsibilities which may not suit everyone
  • AI tools are used in the recruiting process, which may involve oversight

Summarised from Cresta's posting. Read the full original.

Listed by Cresta on their greenhouse job board, last confirmed open on 2026-10-22. PitchMeAI is not the employer.

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