Staff ML Engineer—Personalization & Large-Scale Recommendations

Jobgether; United States; Hybrid; USD 227,000 - 325,000; Full time

Benefits offered by this job

Annual base salary: $227,495–$324,993

Equity: Additional equity compensation

Health insurance

Paid parental leave

401(k) retirement plan

Paid time off

Flexible holidays

Paid sick leave

Monthly meal allowance

Flexible work arrangements

Inclusive workplace

Job summary

Jobgether in the United States is seeking a Staff Machine Learning Engineer, Home Surfaces to own and advance personalized home feeds and Shortcuts experiences. You will design and deploy scalable recommendation systems, collaborating with product, software, data science, and design teams to define objectives and testing strategies.

You will train and optimize LLMs with SFT, distillation, and LoRA, while ensuring latency, reliability, and cost efficiency.

Qualifications

• Extensive experience developing, deploying, and operating machine learning systems in production environments.
• Deep expertise in recommendation systems, ranking models, personalization, or large-scale content discovery platforms.
• Strong proficiency in Python and hands-on experience building machine learning solutions using PyTorch.
• Practical experience training, fine-tuning, evaluating, and optimizing large language models, including techniques such as SFT, distillation, and LoRA.
• Understanding of large-scale model inference, including latency management, reliability, scalability, and cost optimization.
• Experience designing, implementing, and interpreting online experiments and A/B tests to measure impact and improve user experiences.
• Experience operating distributed machine learning workloads using frameworks such as Ray, FSDP, HSDP, or comparable technologies.
• Experience building and maintaining data pipelines and workflow orchestration systems using tools such as Flyte, Airflow, BigQuery, and cloud-based storage platforms.
• Strong technical judgment and the ability to influence architecture and engineering decisions beyond your immediate team.
• Excellent communication and collaboration skills, with the ability to work effectively with both technical and non-technical stakeholders.
• A user-focused mindset and a commitment to applying machine learning thoughtfully to improve content discovery and engagement.

Responsibilities

• Own, develop, and continuously improve the machine learning models and systems powering personalized home feeds, including the Shortcuts experience.
• Design, build, deploy, and optimize recommendation systems that serve millions of users globally.
• Develop content recommendation capabilities for emerging AI-powered and agentic user experiences.
• Train, fine-tune, evaluate, and optimize large language models using approaches such as supervised fine-tuning (SFT), knowledge distillation, and parameter-efficient training techniques, including LoRA.
• Collaborate with product managers, software engineers, data scientists, and designers to define product objectives, establish experimentation strategies, and deliver effective personalization features.
• Design and execute A/B tests and online experiments to evaluate model performance, measure user outcomes, and guide iterative improvements.
• Establish robust model evaluation, monitoring, and optimization practices to improve recommendation relevance, reliability, latency, and cost efficiency.
• Enhance machine learning platforms, data pipelines, orchestration workflows, and production infrastructure to support large-scale personalization.
• Lead technical decision-making in ambiguous problem spaces and contribute to the long-term architecture and strategy of recommendation systems.
• Mentor and support other machine learning engineers, promote knowledge sharing, and strengthen engineering standards and practices across the team.

Skills

Recommendation systems

Python

PyTorch

LLMs

A/B testing

Distributed ML

Data pipelines

Experimentation

System design

Tools

Ray

Flyte

Airflow

BigQuery

Cloud storage

Job description

Jobgether in the United States is seeking a Staff Machine Learning Engineer, Home Surfaces to own and advance personalized home feeds and Shortcuts experiences. You will design and deploy scalable recommendation systems, collaborating with product, software, data science, and design teams to define objectives and testing strategies.

You will train and optimize LLMs with SFT, distillation, and LoRA, while ensuring latency, reliability, and cost efficiency.