Staff Software Engineer, AI Platform
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Job Description
Staff Software Engineer building JLL’s internal AI platform and model gateway. Enabling AI agents and products across a global real estate and investment management company.
Responsibilities:
- Own significant parts of the AI platform end to end, from API shape through behavior under load
- Ensure reliability and performance in production for the AI gateway
- Design provider abstraction, model routing, failover, and configuration-based provider switching
- Make the agent surface framework- and deployment-location agnostic
- Build evaluation and benchmarking capabilities largely from scratch
- Design enforceable guardrails for safe production deployment of agents
- Own inference cost and latency, including spend attribution and routing decisions
- Keep model onboarding routine as the model landscape changes
- Make the compliant path the fast path for architecture, security, and responsible-AI review
- Solve difficult integration problems for other engineering teams
- Improve observability ahead of scale
- Mentor across a distributed team and produce durable designs and documentation
- Set technical direction and choose platform abstractions and scope
Requirements:
- 8+ years building and operating production systems
- Direct experience shipping agentic systems to production, including agentic patterns, retrieval, tool calling, inference cost and latency
- Hands-on experience with more than one model provider, including dealing with provider differences in practice
- Experience with evaluation, observability or guardrail tooling for agentic systems
- Strong platform engineering track record on systems where other engineering teams were users
- Hands-on depth in at least one major public cloud, including running and debugging production workloads
- Experience designing APIs and abstractions that others build against and that must remain stable
- Demonstrable production ownership: on-call, incident response, and root cause analysis
- Track record of pushing work through a large organisation, navigating process and unblocking decisions
- Excellent English communication, written and spoken
- Must be authorized to work in the United States without sponsorship
- Preferred: internal developer platform or shared multi-tenant service experience
- Preferred: Kubernetes and container-based delivery
- Preferred: infrastructure as code
- Preferred: enterprise security, data privacy or responsible-AI review processes
Benefits:
- 401(k) plan with matching company contributions
- Comprehensive Medical, Dental & Vision Care
- Paid parental leave at 100% of salary
- Paid Time Off and Company Holidays
- Early access to earned wages through Daily Pay
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