Sesame · 9 hours ago
ML Engineer
New York, NY
Full-time
Onsite
Senior Level
$190K/yr - $320K/yrSesame is a company focused on creating lifelike computers that can interact with humans naturally. They are seeking an ML Engineer to design and automate evaluation pipelines, create tooling for dataset curation, and deploy state-of-the-art voice models for their real-time companion experience.
Artificial Intelligence (AI)Consumer ElectronicsConsumer SoftwareSoftware
Responsibilities
Own evaluation pipelines — design, build, and automate offline and live evals that keep our speech and multimodal models honest in production
Harness the data — create tooling for safe, versioned, privacy-aware dataset curation and discovery
Ship models, not slide decks — partner with research and infra to prototype, train, and deploy state-of-the-art voice models that power Sesame’s real-time companion experience
Squeeze silicon — scale training and inference for LLM-class workloads; chase latency, throughput, and cost until the graphs flatten
Wire up monitoring and live evals — surface quality regressions before users or PMs notice
Move at startup speed — take ideas from whiteboard to production in days, not quarters; leave a clean trail of tests and dashboards behind
Qualification
Required
Expert-level PyTorch
Proven software engineer who loves ML; comfortable writing production code across the stack
Hands-on experience training or fine-tuning large language or other large-scale models with a variety of techniques
Evaluation expert — you've designed metrics and harnesses that actually predict user happiness
Deep knowledge of the ML lifecycle: dataset ops, training pipelines, eval frameworks, deployment, and monitoring
History of shipping complex projects to production—especially user-facing, online ML systems—despite shifting requirements and surprise roadblocks
High agency and the judgment to know when to sprint solo vs. pull in the squad
Track record of setting technical direction, driving consensus, and partnering smoothly with product, infra, and research
Benefits
401k matching
100% employer-paid health, vision, and dental benefits
Unlimited PTO and sick time
Flexible spending account matching (medical FSA)
Company
Sesame
Sesame is a voice tech startup focused on developing AI voice assistants that create natural and emotionally resonant conversations.
Founded in 2022
51-200 employees
H1B Sponsorship
Sesame 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
2021 (2)
Funding
Current Stage
Growth StageTotal Funding
$307.62MKey Investors
Sequoia Capital,Spark CapitalAndreessen Horowitz
2025-10-21Series B· $250M
2023-11-01Series A· $47.5M
2023-09-12Seed· $10.12M
Recent News
Mexico Business
2025-12-24
2025-10-29
Company data provided by crunchbase