Senior Software Engineer, AI & Infrastructure Planning

About Us

Available Locations: Austin, TX | Lisbon, Portugal | London, UK

About the role

The Snr Software Engineer, AI & Infrastructure Planning role helps Cloudflare build, deploy, and operate one of the world's largest distributed networks. You will build an auditable multi-agent system on Cloudflare’s platform to replace notebooks and email threads with agent-driven forecasts, supply plans, cost models, and workflow approvals into agent workflows that planners & executives rely on for decision analysis.

Responsibilities

• Collaborate closely with capacity planning, networking, and data center engineering teams to encode technical domain expertise into structured specifications, formal data contracts, and agent functional capabilities.
• Architect, deploy, and maintain scalable production agents and durable workflows leveraging the Cloudflare Workers ecosystem, including Durable Objects, Workflows, D1, R2, Queues, Vectorize, Workers AI, and AI Gateway.
• Translate core infrastructure planning functions—such as forecasting, supply planning, cost modeling, narrative documentation, and executive approvals—into automated LLM deployment or deterministic logic based agent workflows designed for critical decision-making analysis.
• Implement rigorous risk tiering, formal approval checkpoints, detailed audit logs, and execution lineage to ensure safe autonomous operations.
• Incorporate predictive statistical and machine learning models into agent systems, establishing robust BigQuery data pipelines, optimized access patterns, and continuous monitoring.
• Author comprehensive technical specifications and Requests for Comments (RFCs), perform peer design reviews, and establish architectural standards for AI agent deployment across the organization.

Desirable Skills, Knowledge, and Experience

• Senior-level software engineering experience, with security conscious production systems you can point to (repos, releases, services you operated).
• Strong TypeScript, and comfort building on serverless or edge runtimes (Cloudflare Workers preferred). HTTP APIs, async, queues, performance.
• Experience with LLMs and agents: tool calling, structured output, multi-step or multi-agent orchestration, prompt and eval iteration.
• Experience with durable state and workflows (Durable Objects, Cloudflare Workflows, or equivalents such as Templets updraoral or Step Functions).
• Demonstrated experience in infrastructure planning: capacity planning, forecasting, networking, CDN, cloud or data center capacity, or adjacent work. We will teach you our specific systems.
• Solid data skills: SQL, a cloud data warehouse (BigQuery preferred), and working knowledge of forecasting and statistical modeling (backtesting, error metrics, knowing when a model is wrong).
• Clear written communication: specs, RFCs, and explanations that planners and executives can use.

Bonus Points

• A data science or ML background (time series, optimization, predictive modeling) and Python for scientific computing.
• Experience with Hono, Zod, OpenAPI, and a modern frontend framework (Astro or React).
• Experience with peering, BGP, ASN and IX data, backbone or transit planning, or colo, power, and procurement planning.
• Experience with agent frameworks (LangGraph, Autogen, A2A) and knowing what to borrow and what to discard.
• CI/CD and infrastructure as code (GitLab CI, Terraform).
• Experience building LLM evaluation frameworks or human-review workflows.
• Bias for simple, scalable designs.

Compensation may be adjusted depending on work location.

• For Portugal-based hires: Estimated annual salary of €66,000-€91,000
• 401(k) Retirement Savings Plan
• Employee Stock Participation Plan

Time Off

• Flexible paid time off covering vacation and sick leave
• Leave programs, including parental, pregnancy health, medical, and bereavement leave