Staff+ Software Engineer, Claude Managed Agents
Anthropic · San Francisco, CA | New York City, NY
Posted 27 days ago
or apply directly on Anthropic's site. We never take the application ourselves.
Is this posting real?
- This role has been open
- 27 days Anthropic's roles stay open a median of 40 days
- Reposted
- No
- Salary listed
- No 0% of Anthropic's roles list one
- Ghost-job risk at Anthropic
- high 276 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
- 2026-09-17
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.
- 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 2026-09-17. PitchMeAI is not the employer.
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