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Sr. Machine Learning Engineer

at 6sense

San Francisco, California, United States, senior, full time, USD 2,00,350–2,60,913 / year, 8+ years

posted 20 Aug 2026

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  • Vector databases
  • LangChain
  • Retrieval-based systems
  • LLM
  • Prompt engineering
  • LangGraph
  • Embeddings
  • NLP
  • MLOps
  • PyTorch
  • Transformers
  • RAG
  • Databricks
  • Amazon Bedrock
  • AWS
  • Python
  • TensorFlow

About the role

Posted: 2026-08-20

What you would do

- Own machine learning problems end to end — from data exploration and modeling through deployment, monitoring, and iteration in production.

- Build NLP, LLM, and agentic systems at enterprise scale, including retrieval-based architectures and multi-agent workflows.

- Develop ranking, recommendation, prediction, and optimization models that are explainable rather than black-box.

- Partner with Product and Go-to-Market to turn ambiguous business problems into shipped capabilities.

- Improve the performance, scalability, and reliability of production ML systems, and help shape AI platform architecture.

- Explain your work clearly to technical and non-technical audiences, and engage with customers when needed.

- Mentor engineers and raise the bar for engineering excellence.

What they are looking for

Required

- 8+ years of industry experience building and deploying machine learning systems in production, with clear end-to-end ownership.

- Strong foundation in machine learning and applied statistics, with hands-on depth in NLP, transformers, embeddings, and retrieval-based systems.

- Practical experience with modern GenAI tooling such as LangGraph, LangChain, or Amazon Bedrock.

- Strong Python skills and experience building distributed ML pipelines on cloud infrastructure (AWS, Databricks, or equivalent).

- Solid grasp of feature engineering, model evaluation, and MLOps practices.

- A product mindset — you want to build AI products customers use, and you measure yourself on customer impact.

- Excellent communication: you can explain complex technical work clearly, tell the story of what you’ve built and why, and hold your own with product and business partners.

- Comfort with ambiguity and the judgment to drive execution independently.

Read from boards.greenhouse.io, last seen 3d ago.

- Experience with RAG architectures, vector databases, and prompt engineering.

- Hands-on work with PyTorch or TensorFlow.

- Background in B2B SaaS, enterprise AI products, or forward-deployed engineering — especially where you worked directly with complex customer data and delivered quickly.

Base Salary Range: $200,349.50 - $260,912.60. The base salary range represents the anticipated low and high end of the base salary range for this position. Actual salaries may vary and may be above or below the range based on various factors, including but not limited to work location and experience. The base salary is one component of 6sense’s total compensation package for this position. Other compensation may include a bonus program or commission plan, and stock options if approved by 6sense’s board. In addition, 6sense provides a variety of benefits, including generous health insurance coverage, life, and disability insurance, a 401K employer matching program, paid holidays, self-care days, and paid time off (PTO). #Li-remote

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What comes with it

Full-time employees can take advantage of health coverage, paid parental leave, generous paid time-off and holidays, quarterly self-care days off, and stock options. We’ll make sure you have the equipment and support you need to work and connect with your teams, at home or in one of our offices.

We have a growth mindset culture that is represented in all that we do, from onboarding through to numerous learning and development initiatives including access to our LinkedIn Learning platform. Employee well-being is also top of mind for us. We host quarterly wellness education sessions to encourage self care and personal growth. From wellness days to ERG-hosted events, we celebrate and energize all 6sense employees and their backgrounds.