Research Engineer, Post-Training Evals

Lambda
San Francisco, CA

In 2012, Lambda started with a crew of AI engineers publishing research at top machine-learning conferences. We began as an AI company built by AI engineers. That hasn't changed. Today, we're on a mission to be the world's top AI computing platform. We equip engineers with the tools to deploy AI that is fast, secure, affordable, and built to scale. Whether they need powerhouse GPU hardware on-site or the flexibility of cloud-based solutions, we've got the horsepower to make it happen. Lambda’s AI Cloud has been adopted by the world’s leading companies and research institutions including Anyscale, Rakuten, The AI Institute, and multiple enterprises with over a trillion dollars of market capitalization. Our goal is to make computation as effortless and ubiquitous as electricity.


If you'd like to build the world's best deep learning cloud, join us.

*Note: This position requires presence in our San Francisco office location 4 days per week; Lambda’s designated work from home day is currently Tuesday.

What You’ll Do

  • Define and implement rigorous, reproducible methodologies for our core model evaluation suite.

  • Collaborate with post-training researchers to refine and enhance models for both research and production.

  • Partner with engineering and product teams to translate research insights into product features.

You

  • ML engineer with deep, hands-on experience in model evaluation or post-training.

  • Strong understanding of LLMs and multimodal models.

  • Thrive in collaborative, cross-functional teams.

Nice to Have

  • Contributions to relevant open-source projects.

  • Publications in top ML conferences.

Salary Range Information

Based on market data and other factors, the annual salary range for this position is $185,000 to $275,000. However, a salary higher or lower than this range may be appropriate for a candidate whose qualifications differ meaningfully from those listed in the job description.

About Lambda

  • Founded in 2012, ~350 employees (2024) and growing fast

  • We offer generous cash & equity compensation

  • Our investors include Andra Capital, SGW, Andrej Karpathy, ARK Invest, Fincadia Advisors, G Squared, In-Q-Tel (IQT), KHK & Partners, NVIDIA, Pegatron, Supermicro, Wistron, Wiwynn, US Innovative Technology, Gradient Ventures, Mercato Partners, SVB, 1517, Crescent Cove.

  • We are experiencing extremely high demand for our systems, with quarter over quarter, year over year profitability

  • Our research papers have been accepted into top machine learning and graphics conferences, including NeurIPS, ICCV, SIGGRAPH, and TOG

  • Health, dental, and vision coverage for you and your dependents

  • Commuter/Work from home stipends for select roles

  • 401k Plan with 2% company match (USA employees)

  • Flexible Paid Time Off Plan that we all actually use

A Final Note:

You do not need to match all of the listed expectations to apply for this position. We are committed to building a team with a variety of backgrounds, experiences, and skills.

Equal Opportunity Employer

Lambda is an Equal Opportunity employer. Applicants are considered without regard to race, color, religion, creed, national origin, age, sex, gender, marital status, sexual orientation and identity, genetic information, veteran status, citizenship, or any other factors prohibited by local, state, or federal law.

Posted 2025-12-10

Recommended Jobs

Fullstack Software Engineer, Labeling Infrastructure

Waymo
Mountain View, CA

Waymo is an autonomous driving technology company with the mission to be the world's most trusted driver. Since its start as the Google Self-Driving Car Project in 2009, Waymo has focused on buildi…

View Details
Posted 2025-12-13

Senior Product Manager, Platform

Verkada
San Mateo, CA

Who We Are Designed with simplicity in mind, Verkada's six product lines — video security cameras, access control, environmental sensors, alarms, workplace, and intercoms — provide unparalleled …

View Details
Posted 2025-11-28

Community Manager - San Fernando Building Lofts

Greystar
Los Angeles, CA

ABOUT GREYSTAR Greystar is a leading, fully integrated global real estate platform offering expertise in property management, investment management, development, and construction services in ins…

View Details
Posted 2026-01-09

Senior Software Engineer - Backend

Furtherai
San Francisco, CA

Role Details Location: San Francisco, CA. This role is based out of our San Francisco HQ and is not eligible for full-time remote work. Compensation: The annual salary range for this position is …

View Details
Posted 2025-11-28

IT Technician

Polypeptide Us
San Diego, CA

Job Summary: The IT Technician II is responsible for providing advanced technical support to end-users and maintaining the overall functionality and performance of IT systems and infrastructur…

View Details
Posted 2025-12-13

ER Registered Veterinary Technician, Swing Shift (Concord)

Ethos Veterinary Health
Concord, CA

Registered Veterinary Technician Emergency Location: Concord, CA Compensation: $25$40/hr (DOE) + $5.50/hr for any hours worked between 6pm & 6am Full-Time | Swing Shift About Us SAGE C…

View Details
Posted 2026-01-06

Current PhD, Applied Research Internship Program - Summer 2026

Capital One
San Jose, CA

Current PhD, Applied Research Internship Program - Summer 2026 At Capital One, we are creating trustworthy and reliable AI systems, changing banking for good. For years, Capital One has been lea…

View Details
Posted 2025-11-18

Travel Skilled Nursing Facility Occupational Therapist - Paying up to $2,800/week

IDS Health | AlliedHealth
Chico, CA

Seeking a dedicated Travel Skilled Nursing Facility (SNF) Occupational Therapist in Chico, CA, offering up to $2,800/week. Assess and develop individualized treatment plans for SNF residents to imp…

View Details
Posted 2025-12-27

ML Infrastructure Engineer

Phizenix
Menlo Park, CA

ML Infrastructure Engineer Menlo Park, CA | On-Site | Full-Time/Direct Hire Client Opportunity | Through Phizenix Phizenix, a certified minority and women-led recruiting firm, is hiring on…

View Details
Posted 2025-12-13

Middle School Math Teacher Pool (26-27SY)

Lighthouse Community Public Schools
Oakland, CA

Middle School Math Teacher Pool (26-27SY) The Organization Lighthouse Community Public Schools At Lighthouse Community Public Schools we are engaged in an educational movement that goes b…

View Details
Posted 2025-12-12