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Anthropic

Staff+ Software Engineer, Claude Managed Agents

Anthropic · San Francisco, CA | New York City, NY

Posted about 2 months ago

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

Is this posting real?

This role has been open
65 days
Anthropic's roles stay open a median of 78 days
Reposted
No
Salary listed
No
0% of Anthropic's roles list one
Ghost-job risk at Anthropic
high
603 stale, 19 reposted of 603 open
Hiring momentum
795 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-25

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

About this role

As a Staff+ Software Engineer on the Claude Managed Agents team, you will focus on building and scaling the platform for production agents on Claude. Your responsibilities include designing systems for long-lived sessions, evolving the agent harness, and creating APIs that support both internal and external developers. You will work collaboratively with cross-functional teams to define and implement high-quality platform capabilities while addressing complex distributed systems challenges.

Our read on this posting3.4out of 5
benefits
3/5
freshness
4/5
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 Anthropic as an employer.

What you need

  • Minimum of 8 years of practical experience as a backend, distributed systems, or infrastructure engineer
  • Experience building and operating stateful, long-running, or high-throughput systems in production
  • Strong product sense and ability to treat API design as a craft
  • Experience with 0 → 1 work and navigating ambiguity
  • Experience using Claude or other AI tools in software development
  • Ability to take full ownership of work from design through operations

Nice to have

  • Experience building or contributing to an agent harness, agent framework, or LLM orchestration layer
  • Experience working on an AI or ML platform at an AI lab or AI-native product company
  • Experience building evaluation or benchmarking infrastructure for LLM or agent systems
  • Experience with durable execution or workflow engines, sandboxed code execution, or container runtimes
  • Experience shipping public developer platforms, APIs, or SDKs used by external developers at scale

What you get

  • Competitive compensation
  • Optional equity donation matching
  • Generous vacation and parental leave
  • Flexible working hours
  • Lovely office space for collaboration

Worth weighing

  • No specific mention of remote work flexibility beyond hybrid policy
  • Role is in a rapidly evolving area with potential ambiguity
  • High level of responsibility and ownership expected, including on-call duties

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

Listed by Anthropic on their greenhouse job board, last confirmed open on 2026-10-25. PitchMeAI is not the employer.

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