Llm Alignment Engineer Jobs

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Senior / Staff Machine Learning Engineer, Applied AI

Lila Sciences San Francisco, CA

San Francisco, CA

Today

$180k - $298k/yr Full time Senior Ai Ml Artificial Intelligence

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Job Description

Lila Sciences is hiring a Senior / Staff Machine Learning Engineer, Applied AI to connect frontier model progress to customer-specific scientific workflows through post-training, evaluation, debugging, and production integration.

Responsibilities

Use hands-on expertise to close the gap between Lila’s model capabilities and customer scientific workflows
Lead post-training work using SFT and RL alignment approaches such as DPO and PPO/GRPO
Run evaluation loops to measure model quality, reliability, and customer fit
Convert customer learnings, data signals, and evaluation outcomes into repeatable model improvement cycles
Partner with AI researchers to translate model advances into reliable, usable capabilities
Collaborate with Software to integrate model behavior into end-to-end product workflows
Debug complex model failures using traces, evaluations, customer context, and scientific feedback

Requirements

1-2 years of hands-on post-training experience, including SFT and RL methods such as DPO/PPO/GRPO, with a track record of solving these problems repeatedly
Strong software engineering skills in Python and modern ML frameworks such as PyTorch
Proven ability to debug ambiguous, high-stakes model behavior quickly using data, traces, logs, and qualitative feedback
Deep familiarity with large language models, multi-modal models, or agentic AI systems
Clear communication skills for translating customer needs into technical approaches and explaining model behavior to both technical and non-technical audiences

Bonus Points

Experience adapting models for customer-facing or production workflows, ideally in scientific, technical, or data-intensive domains
Experience with RL post-training, such as RLHF, GRPO, or tool-augmented RL
Experience building evaluation harnesses, model monitoring, or quality dashboards
Experience training MoE architectures
A track record of mentoring engineers and being recognized as a go-to technical expert (not people management or strategy ownership)

Tech Stack

Python, PyTorch
SFT
RL: DPO, PPO, GRPO

Location: San Francisco, CA (onsite)

Salary: USD 180,000 - 298,000 per year

Minimum experience: 1 years

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