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Senior Staff Machine Learning Engineer, Ads Ranking

Join Reddit as a Senior Staff Machine Learning Engineer to redefine ML engineering with agentic AI in a fully remote role.

Location
Remote - United States
Compensation
$292.5k–$409.5k/yr
Level
staff
Type
full time · Remote

Posted by employer 12 hours ago

First seen on Joblaze 3 hours ago

Last verified on the company career page 3 hours ago

Skills & Technologies

Cursor Python Claude Flexible on stack

What you'll build

  • Develop advanced ML models
  • Use AI-assisted development systems
  • Build reliable loops for data and label analysis
  • Design evaluation harnesses
  • Partner with product and engineering teams

Must have

  • 9+ years of experience in ML engineering
  • Senior Staff-level technical leadership
  • Deep modeling expertise
  • Strong coding ability in Python
  • Concrete examples of using agentic AI

AI in the day-to-day

Use tools such as Claude, Cursor, and comparable AI-assisted development systems to investigate model behavior and improve code.

Requirements

Experience
9+ years

Not disclosed in this posting: visa sponsorship.

Benefits

401k Match Equity/Stock Options Remote Work Health Insurance Parental Leave

Joblaze summary

In this role, the Senior Staff Machine Learning Engineer at Reddit focuses on enhancing machine learning models and workflows, leveraging agentic AI to improve model quality and development speed. Key skills include deep expertise in modeling, proficiency in Python, and experience with AI-assisted tools like Claude and Cursor. This position is suited for seasoned professionals with over nine years of experience in ML engineering and a track record of influencing technical direction across teams. The role emphasizes collaboration with various teams to connect modeling advancements to user and business outcomes.

Joblaze insights

Quick facts

Is the Senior Staff Machine Learning Engineer, Ads Ranking role remote?
Yes — Reddit lists this as a fully remote position.
What's the salary range?
Reddit lists $292,500–$409,500 for this role.
How much experience is required?
At least 9 years of relevant experience for this Senior Staff Machine Learning Engineer, Ads Ranking role.
What's the tech stack?
Joblaze extracted these technologies from the posting: Claude, Cursor, Python.
What seniority level is this role?
Reddit targets staff-level candidates for this position.
Is this full-time or contract?
Full-time for this Senior Staff Machine Learning Engineer, Ads Ranking role at Reddit.

From the original posting

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 130 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com.

About the Role:

We are seeking a Senior Staff Machine Learning Engineer to define and accelerate how we leverage agentic AI to transform machine learning models and modeling workflows. This high-impact role focuses directly on modeling leverage—enhancing model quality and velocity—rather than building general infrastructure. As a senior staff engineer, you will operate as a technical leader across the entire modeling loop, utilizing modern AI-assisted development systems (such as Claude, Cursor, and comparable tools) to make model development faster, more rigorous, and significantly more effective across the organization.

Why Join Us? This role offers a domain-flexible platform to redefine how ML engineering is done. If you are passionate about combining deep ML fundamentals with the vanguard of agentic AI to multiply team impact, we’d love to talk to you.

What you’ll do:

  • Develop advanced ML models and the agentic workflows that help teams design, train, evaluate, and improve them.
  • Use tools such as Claude, Cursor, and comparable AI-assisted development systems to investigate model behavior, generate and test hypotheses, automate repetitive analysis, and improve code and experiments.
  • Build reliable loops for data and label analysis, feature and embedding development, architecture comparison, hyperparameter optimization, error analysis, and experiment readouts.
  • Design evaluation harnesses that measure both model outcomes and agent/workflow quality, including correctness, reproducibility, regressions, cost, and latency.
  • Partner with product, data science, ML infrastructure, and engineering teams to connect modeling improvements to user and business outcomes.
  • Set technical direction across teams, mentor engineers, and raise the bar for modeling rigor and AI-assisted engineering.

Required Qualifications:

  • 9+ years of experience in ML engineering, applied ML, or a related field, with substantial production impact.
  • Senior Staff-level technical leadership and a record of influencing direction across teams.
  • Deep modeling expertise and strong fundamentals in data, objectives, architectures, optimization, evaluation, and experimentation.
  • Concrete examples of using agentic AI or AI coding tools to produce better ML outcomes—not just faster code generation.
  • Ability to design guardrails and evaluations that make autonomous or semi-autonomous workflows trustworthy.
  • Strong coding ability in Python and fluency with modern ML frameworks and data tooling.
  • Clear, concise communication and a collaborative, low-ego approach to technical leadership.

Perks and Benefits:

  • 100% remote opportunity (we have 4 office locations for hybrid/onsite work preference in NY, SF, LA and Chicago)
  • Competitive salary and equity options
  • Comprehensive health benefits (medical, dental, vision) & workplace perks (home office set up stipend etc)
  • Generous 401k matching
  • Flexible vacation policy
  • Paid parental leave (4+ months)
  • Family planning support
  • Paid volunteer time off

#LI-AS1

Pay Transparency:

This job posting may span more than one career level.

In addition to base salary, this job is eligible to receive equity in the form of restricted stock units, and depending on the position offered, it may also be eligible to receive a commission. Additionally, Reddit offers a wide range of benefits to U.S.-based employees, including medical, dental, and vision insurance, 401(k) program with employer match, generous time off for vacation, and parental leave. To learn more, please visit https://www.redditinc.com/careers/.

To provide greater transparency to candidates, we share base salary ranges for all US-based job postings regardless of state. We set standard base pay ranges for all roles based on function, level, and country location, benchmarked against similar stage growth companies. Final offer amounts are determined by multiple factors including, skills, depth of work experience and relevant licenses/credentials, and may vary from the amounts listed below.

The base salary range for this position is:
$292,500$409,500 USD

In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out of recording, transcription and summarization prior to any scheduled interviews.

During the interview, we will collect the following categories of personal information: Identifiers, Professional and Employment-Related Information, Sensory Information (audio/video recording), and any other categories of personal information you choose to share with us. We will use this information to evaluate your application for employment or an independent contractor role, as applicable. We will not sell your personal information or disclose it to any third party for their marketing purposes. We will delete any recording of your interview promptly after making a hiring decision. For more information about how we will handle your personal information, including our retention of it, please refer to our Candidate Privacy Policy for Potential Employees and Contractors.

Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve. Reddit is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If, due to a disability, you need an accommodation during the interview process, please let your recruiter know.

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