upwork
Senior Lead Machine Learning Engineer, Agentic AI
At a Glance
- Location
- Canada
- Experience
- 12+ years
- Posted
- 2026-02-09T17:59:44-05:00
Key Requirements
Required Skills
Certifications
- SAFe
Domain Knowledge
- Accounting
- Engineering
- Finance
- Legal
- Marketing
- Medical
Responsibilities
Build Agentic Intelligence.
Design and implement multi‑agent systems (planning, tool‑use, memory, debate/critique, reflection) with robust guardrails and recovery strategies.
Develop protocol‑aware agents and services that interoperate cleanly with developer tooling (e.g., agent frameworks and protocols such as MCP).
Own reliability at scale: deterministic execution where needed, idempotency, timeouts/retries, and evaluation‑driven iteration on agent behavior.
Train, Align, and Evaluate LLMs for Agents.
Lead data strategy and curation for agent tasks; drive SFT, DPO, RLHF/RLAIF, and safety tuning tailored to multi‑tool, multi‑step workflows.
About the Company
Go-Lifted
and follow on
.
We’re seeking a Senior Lead Machine Learning Engineer to architect, ship, and scale the next generation of agentic intelligence across Upwork. You will lead end‑to‑end development of AI agents and the platform that powers them—from LLM training and evaluation to runtime orchestration, safety, and developer APIs. This is a hands‑on, high‑impact role at the intersection of applied research and platform engineering, enabling internal teams and external developers to build reliable, safe, and high‑performing agents on Upwork.