Jobs in the United States

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Added 2 mins ago
Growth and Strategy Associate (SDR)
ResolveAI
San Francisco, CA
…by building a transformative, truly autonomous AI Production Engineer that investigates and fixes complex system issues…
Added 3 mins ago
Staff Machine Learning Engineer - Vision AI
Toast
Remote, United States
We're looking for a Staff Machine Learning Engineer, Vision AI to build the platform and the products that bring it to restaurant operators. You'll own major parts of the system end to end,…
Added 3 mins ago
Principal Machine Learning Engineer, Vision AI
Toast
Remote, United States
We're looking for a Principal Machine Learning Engineer, Vision AI to architect and build the platform behind these products. You'll have an outsized influence on how Vision AI is built and…
Added 3 mins ago
Forward Deployed Engineer
United Airlines
Chicago, IL
…serve customers, and support employees. As a Forward Deployed Engineer, you'll embed with business teams, find the best AI opportunities, and turn them into deployed solutions. You'll own…
Added 3 mins ago
Lead AI Process Engineer
United Airlines
Chicago, IL
Added 5 mins ago
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Senior Principal Core Infrastructure Engineer
Oracle
Nashville, TN
- $126,200 to $264,100 USD / year
As a Senior Software Engineer for the Access Governance platform, you will design, develop, and maintain scalable backend services primarily in Java that support large volumes of identity,…
Added 5 mins ago
O
Principal Core Infrastructure Engineer - Physical Networking Automation and Tooling
Oracle
Nashville, TN
- $114,600 to $234,600 USD / year
As a Principal Core Infrastructure Engineer, you will design, build, and deliver scalable automation frameworks and advanced platforms that leverage AI/ML to drive operational excellence…
Added 6 mins ago
Principal Engineer Technical Marketing
Infineon
El Segundo
Added 9 mins ago
AI Engineer - US Remote
Maneva
Remote, United States
Added 9 mins ago
Machine Learning Engineer
Arena Intelligence, Inc.
Bay Area, CA
Arena Intelligence is seeking a Machine Learning Engineer to help scale and strengthen the core infrastructure that powers real-world AI evaluation. You’ll play a foundational role in…
Added 15 mins ago
Senior Software Engineer
Optimal Market Technologies, LLC
Chicago, IL
We are seeking a Senior Software Engineer to help build our next-generation options trading platform and to maintain and improve the current one.
Added 15 mins ago
Customer Engineer, AI & Integrations
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Remote, United States
We're looking for a Customer Engineer, AI & Integrations to help merchants implement, configure, troubleshoot, and adopt Bask Health's supported AI capabilities and third-party software…
Added 17 mins ago
Instrumentation & Controls Engineer SME – Hyperscale Data Centers
Jacobs
West Chicago, IL
Registered Professional Engineer (PE) required.
Added 18 mins ago
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Tosca Automation Engineer
Cognizant
Deerfield, IL
- $100,000 to $112,000 USD / year
Based on this role’s business requirements, this is a Hybrid position requiring 3 days per week in a client office in Deerfield, IL
Added 18 mins ago
Lead Digital Health Quality Engineer
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North Chicago, IL
The Lead Digital Health Quality Engineer will serve as representative on cross-functional SaMD and Digital Health Software product development teams, driving design controls, DHF…
Added 18 mins ago
Associate Engineer, Quality Systems
AbbVie
North Chicago, IL
Added 18 mins ago
Electrical Engineer-Metering & Energy Systems
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Decatur, IL
The Engineer, Ameren IL Metering and Projects, designs equipment installations, provides technical support, and evaluates processes and equipment. Limited travel is expected.
Added 18 mins ago
Member of Product Staff
Meta
Springfield, IL
Integrate data, usability studies, research, and market analysis into product strategies and requirements to enhance user satisfaction and improve engineer productivity.
Added 18 mins ago
Lead Director - Security Operations Center (SOC)
CVS Health
Springfield, IL
Added 18 mins ago
Channel/Partner Sales Engineer - Southeast
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Springfield, IL
Rubrik is looking for a Channel Sales Engineer to cover key regional and national partners in the Southeast US. As a Sales Engineer you are accountable for regional revenue goals by driving…
Added 18 mins ago
AI Engineer Agentic Systems - must be local in Pittsburgh, PA
System One
Pittsburgh, PA
An engineer with 3 to 6 years of experience who designs, builds, and ships agentic AI tools from requirements to production in Microsoft Azure and System One’s enterprise application…
Added 18 mins ago
Product Content Engineer
Meta
Springfield, IL
…experiences actually work for people.We're looking for a Content Engineer who will partner with Meta’s agent tooling team to define model quality standards and target behaviors for Meta’s…
Added 18 mins ago
Product Security Engineer - Team Lead
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Springfield, IL
Product Security Engineer - Team Lead Responsibilities:
Added 18 mins ago
AI/ML Engineer Intern
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Added 18 mins ago
Reverse Engineer - Android
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Arena Intelligence, Inc.

Machine Learning Engineer

Bay Area, CA, United States

Apply on jobs.ashbyhq.com About employer

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Job details

Experience: 4+ years of industry experience or relevant projects
Posting language: English
Posted: Nov 13, 2026

Original job description

ABOUT ARENA INTELLIGENCE

Arena is the platform for evaluating how AI models perform in the real world. Founded by researchers from UC Berkeley's SkyLab, we're on a mission to measure and advance the frontier of AI for real-world use, and to build the foundation for everyone to understand, shape, and benefit from it.

Tens of millions of people use Arena each month to evaluate how frontier systems handle the work they actually do. The preferences they share power the most transparent, rigorous, and human-centered evaluations in AI. Leading AI labs, enterprises, and independent researchers rely on our work and open datasets to understand how models behave in real workflows: agentic coding, creative generation, professional productivity, and beyond. We go beyond leaderboards and decompose what human experience reveals about AI, so models advance toward the work people actually do.

We're a team of researchers, academics, builders, and creatives from UC Berkeley, Google, Stanford, and DeepMind. We seek truth, move fast, and value craftsmanship, curiosity, and impact over hierarchy. We're building a company where thoughtful, curious people from all backgrounds can do their best work together, in an office culture that radiates excellence, energy, and focus.

ABOUT THE ROLE

Arena Intelligence is seeking a Machine Learning Engineer to help scale and strengthen the core infrastructure that powers real-world AI evaluation. You’ll play a foundational role in shaping how we build, deploy, and improve our model benchmarking systems, working across data pipelines, inference APIs, and new evaluation methodologies. This is an opportunity to apply your technical expertise to a platform trusted by millions, and to help define how cutting-edge AI is assessed in the wild.

As one of the first ML engineers on the team, you’ll partner closely with researchers, engineers, and product leadership to turn new ideas into reliable systems. You’ll help us move fast while staying rigorous, improving reproducibility, scaling up to new modalities, and deepening our ability to understand and compare frontier models.

YOU’LL

Architect and build what will become our core modeling for data and evaluation products
Own the full stack data, model training, and eval pipelines
Help grow a culture of feedback and rapid product iteration as we build new features as a tight-nit team
Conduct research into state-of-the-art evaluation methods and contribute to the long-term vision for a centralized, scalable evaluation platform.

YOU’LL HAVE

Strong programming skills with the ability to work across the stack in a typical recommendation system or LLM stack
Experience in deep learning, language models or reward model training
Experience in working with LLM for fine tuning, prompt engineering, function calling etc
Self-motivated with a willingness to take ownership of tasks
A passion for shipping quality products
4+ years of industry experience or relevant projects
Solid understanding of statistics, and various tools and methodologies for evaluating uncertainty in a way that is specific to the given product being shipped

WHAT WE OFFER

We offer competitive compensation aligned to the markets where our team members are based. The compensation range for each role is listed on its posting and will depend on the candidate's experience and work location.
Comprehensive health and wellness benefits, including medical, dental, vision, and additional support programs.
The opportunity to work on cutting-edge AI with a small, mission-driven team
A culture that values transparency, trust, and community impact

Come help build the space where anyone can explore and help shape the future of AI.

Arena Intelligence provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability, genetics, sexual orientation, gender identity, or gender expression. We are committed to a diverse and inclusive workforce and welcome people from all backgrounds, experiences, perspectives, and abilities.

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Jobs in the United States