Staff ML Engineer, Fine Tuning

Salesforce

Staff Machine Learning Engineer optimizing and finetuning NLP models for Slack's core product experiences. Collaborating with various teams to deliver impactful features and mentoring engineers.

Posted 5/30/2026full-timeSeattle • California, Washington • 🇺🇸 United StatesLead💰 $197,300 - $313,700 per yearWebsite

Tech Stack

Tools & technologies

GoJavaPHPPythonPyTorchRubyScalaTensorflow

About the role

Key responsibilities & impact

Design and execute finetuning strategies for large language models and other deep learning architectures tailored to Slack's NLP tasks
Own the model training lifecycle end-to-end: data curation, training infrastructure, hyperparameter optimization, evaluation, deployment and monitoring
Build and maintain scalable finetuning training pipelines on GPU infrastructure
Brainstorm with Product Managers, Designers and Frontend Engineers to conceptualize and build new features
Produce high-quality results by leading or contributing heavily to large multi-functional projects
Mentor other engineers and deeply review code
Improve engineering standards, tooling, and processes

Requirements

What you’ll need

5+ years of hands-on experience training and fine-tuning deep learning models in NLP (or a closely related domain)
5+ years of experience with common deep learning frameworks like PyTorch, TensorFlow, JAX, etc
Track record of shipping fine-tuned models to production that serve real users at scale
Experience with functional or imperative programming languages: PHP, Python, Ruby, Go, C, Scala or Java
An analytical and data driven mindset
Led technical architecture discussions and helped drive technical decisions within the team
The ability to write understandable, testable code with an eye towards maintainability
Strong communication skills

Benefits

Comp & perks

time off programs
medical
dental
vision
mental health support
paid parental leave
life and disability insurance
401(k)
employee stock purchasing program

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

deep learningNLPmodel traininghyperparameter optimizationdata curationGPU infrastructurePyTorchTensorFlowJAXprogramming languages

Soft Skills

analytical mindsetdata drivenstrong communicationmentoringcode reviewcollaborationleadershipproblem solvingproject managementmaintainability