Upwork · 2 months ago
Senior Lead Machine Learning Engineer - AI Agents
United States
Full-time
Remote
Senior Level, Lead/Staff
$195K/yr - $296K/yrUpwork is the world’s human and AI-powered work marketplace that connects businesses with highly skilled, AI-enabled independent talent. They are seeking a Senior Lead AI/ML Engineer to drive the next generation of agentic intelligence through human-machine collaboration across Upwork’s platform, focusing on developing systems and protocols for AI Agents.
FreelanceMarketplacePeer to PeerRecruiting
Responsibilities
Architect and implement scalable infrastructure to support LLM-based Agentic systems, including multi-agent pipelines, and real-time orchestration
Design APIs, SDKs, and internal tooling to accelerate productivity through AI agent adoption
Drive developer advocacy by partnering to produce technical content, samples, and reference architectures that simplify integration with our platform
Partner with cross-functional stakeholders to align technical solutions with product strategy, ensuring high developer productivity and agent performance
Provide consulting and hands-on support to teams integrating with our agentic marketplace, advocating for best practices and evolving the ecosystem based on feedback
Contribute to AI/ML research initiatives where applicable, representing Upwork at conferences and in technical communities
Qualification
Required
Proven experience designing and deploying agent architectures, protocols, or LLM-powered workflows in production environments
Strong engineering foundation with expertise in Python and Agent frameworks (e.g., LangChain, Autogen) and protocols (e.g., MCP, A2A)
Demonstrated success building developer platforms, APIs, SDKs, tools, or frameworks focusing on usability, extensibility, and developer support
Familiarity with developer relations or solutions engineering, including documentation, demos, and consultative technical work
You have a growth mindset, strong communication skills, and an inclusive approach to leadership
You are excited to work across functions and learn from challenges and teammates
Benefits
Comprehensive medical coverage for you and your family
Unlimited PTO
A 401(k) plan with matching
12 weeks of paid parental leave
An Employee Stock Purchase Plan
Company
Upwork
Upwork is an online marketplace that connects corporate businesses and organizations with field professionals and independent talents.
Founded in 2014
501-1000 employees
H1B Sponsorship
Upwork has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (16)
2024 (28)
2023 (23)
2022 (35)
2021 (29)
2020 (22)
Funding
Current Stage
Public CompanyTotal Funding
$168.8MKey Investors
BenchmarkDAG VenturesSigma Partners
2018-10-02IPO
2017-01-01Series Unknown
2016-10-27Secondary Market
Leadership Team
Hayden Brown
President and Chief Executive Officer
Erica Gessert
Chief Financial Officer
Recent News
2026-01-09
2025-12-11
Company data provided by crunchbase