# Senior/Staff Machine Learning Engineer, General Agents, Enterprise GenAI

**Company:** [Scale AI](https://hotfix.jobs/companies/scale-ai)
**Location:** San Francisco, CA, New York, NY, Seattle, WA
**Role:** ML Engineering
**Salary:** $218k – $273k/yr
**Experience:** 5+ years
**Skills:** Python, LLMs, Machine Learning, AI Agents, Llm Reasoning, Tool Use, Evaluation Frameworks, Cloud Deployment, Fine-Tuning, Openai Apis
**Posted:** 2026-02-12

> Designs, builds, and deploys production-ready AI agents using LLMs, tool use, and reasoning for enterprise problems. Requires 5+ years ML experience, Python proficiency, and Bachelor's in CS/ML/AI.

## Job Description

## About the Role

As a Senior/Staff Machine Learning Engineer on the General Agents team, you’ll design, build, and deploy production-ready AI agents that solve high-impact enterprise problems. You will work across the full agent lifecycle—from model and system design to evaluation, deployment, and iteration.

**You will:**
- Design and implement end-to-end agent systems that combine LLM reasoning, tool use, memory, and control logic to solve recurring enterprise use cases.
- Build scalable, reliable agent architectures that can be deployed across many customers with varying data, tools, and constraints.
- Develop evaluation frameworks, datasets, environments, and metrics to measure agent performance, reliability, and business impact in production settings.
- Collaborate closely with product managers, customers, data annotators, and other engineering teams to translate enterprise requirements into robust agent designs.
- Productionize frontier agent techniques (e.g., planning, multi-step reasoning and tool-use, multi-agent patterns) into maintainable, observable systems.
- Own deployment, monitoring, and iteration of agent systems, including failure analysis and continuous improvement based on real-world usage.
- Contribute to technical direction and architectural decisions for general agent development best practices and methods, with increasing scope and leadership at the Staff level.

**Ideally you’d have:**
- 5+ years of experience building and deploying machine learning or AI systems for real-world, production use cases.
- Strong engineering fundamentals, supported by a Bachelor’s and/or Master’s degree in Computer Science, Machine Learning, AI, or equivalent practical experience.
- Deep understanding of modern LLMs, prompt-, context-, and system-level optimization, and agentic system design.
- Proven proficiency in Python, including writing production-quality, testable, and maintainable code.
- Experience building systems that integrate models with external tools, APIs, databases, and services.
- Ability to operate in ambiguous problem spaces, balancing research-driven approaches with pragmatic product constraints.
- Strong communication skills and comfort working in customer-facing or cross-functional environments.

**Nice-to-haves:**
- Hands-on experience building AI agents using modern generative AI stacks (OpenAI APIs, commercial or open-source LLMs).
- Experience with agent frameworks, orchestration layers, or workflow systems (e.g., tool calling, planners, multi-agent setups).
- Familiarity with evaluation, monitoring, and observability for LLM-powered systems in production.
- Experience deploying ML systems in cloud environments and operating them at scale.
- Experience fine-tuning or adapting foundation models using methods like supervised fine-tuning (SFT), reinforcement learning with verifiable rewards (RLVR), and low-rank adaptation (LoRA) to improve agent performance on domain-specific tasks.

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**Apply:** https://hotfix.jobs/jobs/021b1cc5-8775-4a47-a1b4-1046fd301a46
**Canonical:** https://hotfix.jobs/jobs/021b1cc5-8775-4a47-a1b4-1046fd301a46