Staff Machine Learning Engineer
- Salary
- $220K - $300K
- Level
- Staff
- Work type
- On-site · HQ: San Francisco
Not stated in the posting: visa.
Open. First seen 13 October 2026.
About the role
About Lightfield
Lightfield's standard text
Lightfield is reimagining CRM as a world model of a business. By learning from emails, meetings, and customer conversations, we’re building a living understanding of how a company works—so AI can help teams anticipate what comes next, make better decisions, and take action.
More than 5,000 companies have used the product since its November launch. We’ve raised more than $70M from Andreessen Horowitz, Coatue, Maverick Ventures, and Greylock to attack the biggest software category in the world. We previously built Tome, which reached more than 25 million users, and our team brings experience from Llama, Instagram, Google, and Salesforce.
About the role
Lightfield's AI/ML team builds the experiences at the core of our product, developing new applications to wow our customers.
Today, the team is focused on building a powerful, domain-specific AI that outperforms generic LLMs.
We’re inspired by the challenge of creating innovative new AI products for people doing serious work, and we’re looking to grow our AI/ML team to meet that challenge.
What you'll do
- Create and ship magical, highly-differentiated AI experiences that sales teams are eager to use
- Craft Lightfield's AI/ML strategy in tight collaboration with founders and execs
- Identify user needs that are well suited for AI/ML solutions, frame the problems, and collaborate with product leaders on solutions
- Prototype innovative, LLM-powered experiences, and drive their development into robust product features
- Help build a world class AI/ML engineering team by recruiting and mentoring teammates
Who you are
- You have a BS or MS degree in CS, AI, or applied math
- You have 7+ years of experience building AI/ML based products in NLP domains
- You have a strong understanding of deep learning AI/ML frameworks or cloud services
- You have hands-on ML Ops experience
Bonus Points
- Experience leading AI/ML product initiatives
- Publications in applied AI/ML scientific journals
- Experience navigating open source/vendor solutions in LLM ops space (LangChain, Llama, Pinecone, etc)
Benefits & Perks
- Competitive salary
- Meaningful early equity
- Health insurance (medical, dental, vision)
- 3 weeks of PTO
- 11 paid company holidays + we enjoy a winter holiday break
- 3 months of paid family leave
- Wednesdays work from home
- Regular team dinners, events, offsites, and retreats
- 401k plan
- Other perks include: commuter and lunch stipend
What this role asks for
Particular to this role
Deep Learning · LangChain · NLP · Vector Databases
Rare in Lightfield's other 10 open postings.
Standard for data science / ML roles
Machine Learning
Common in data science / ML postings at any company.
In most of Lightfield's ads
LLM · Salesforce
Named in most of its open postings, whatever the role.
88% of this description is written for the role. The rest is Lightfield's standard text, folded away below.
Read against Lightfield's other open postings on this site.
The team: Engineering HIRES STEADILY
This role is one of 9 open in Engineering. 5 were posted in the last 30 days and the oldest in January: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Salesforce (9 of 9), PostgreSQL (8 of 9), JavaScript (7 of 9), LLM (7 of 9), Node.js (7 of 9), GraphQL (6 of 9), Next.js (6 of 9)
OTHER ROLES ON THIS TEAM
- Staff Software Engineer, Agentic Pipeline Generation posted Oct 13
- Staff Software Engineer, Product posted Oct 13
- Staff Software Engineer, Full Stack posted Oct 7
- Staff Software Engineer, Applied AI posted Sep 23
- Staff Software Engineer, Data Infrastructure posted Aug 3
- Software Engineer (Early Career) posted Jul 16
- Staff Software Engineer, Backend posted Mar 10
- Staff Software Engineer, Infrastructure posted Jan 23
From the team and dates on Lightfield's own job board.
Other openings for this role
2 postings for this role in HQ: San Francisco (USA) since 2 October 2026, 1 still open. None has been taken down and posted again.
- 13 October 2026 – open (this posting)
- 2 October 2026 – closed 13 October 2026
Salary context
22 other open postings titled Staff Machine Learning Engineer state a salary: median USD 200,000 to USD 264,250 a year.
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