LMArena

Machine Learning Scientist - Open Source Lead

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LMArena is seeking a Machine Learning Scientist to lead open-source research, advancing how AI models are evaluated and understood. This role involves designing, running, and sharing new methods and experiments to reveal model utility, trustworthiness, and capability, grounded in human preference signals. You will curate high-impact datasets, develop new methodologies and reproducible benchmarks, and release code to push AI evaluations forward. Your work will shape the public leaderboard, power community tools, and strengthen transparency in AI evaluation worldwide.

Senior Software Engineer, Data Infrastructure

<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">About the Role:</h2>LMArena is looking for a Machine Learning Scientist to lead our open-source research, including open data set and code releases, advancing how the world evaluates and understands AI models in the open. You’ll design, run, and share new methods and experiments that reveal what makes models useful, trustworthy, and capable, grounded in human preference signals and released openly for the full ecosystem and research community to build upon.In this role, you’ll be responsible for taking our commitment to openness from principle to practice, curating high-impact datasets, developing new methodology and reproducible benchmarks, and releasing code that enables the research ecosystem to push AI evaluations forward. Your work will shape the public leaderboard, power community tools, and strengthen transparency in AI evaluation worldwide.This role is deeply interdisciplinary, working with engineers, product teams, marketing, and the broader research community to advance how we compare models, analyze preference data, and understand factors like style, reasoning, and robustness. You’ll work closely with GTM teams as our spokesperson when it comes to outreach for our open research efforts: strengthening research partnerships, expanding research community participation, and championing programs that grow and support our research network.If you’re excited by open-ended questions, rigorous evaluation, and scientific communication and outreach, you’ll find a meaningful home here. We’re looking for:<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Hands-on experience training large-scale models, including reward models, preference models, and fine-tuning LLMs with methods like RLHF, DPO, and contrastive learning.</li><li class="leading-relaxed">Strong foundation in ML and statistics, with a track record of designing novel training objectives, evaluation schemes, or statistical frameworks to improve model reliability and alignment.</li><li class="leading-relaxed">Fluent in the full experimental stack, from dataset design and large-batch training to rigorous evaluation and ablation, with an eye for what scales to production.</li><li class="leading-relaxed">Deeply collaborative mindset, working closely with engineers to productionize research insights and iterating with product teams to align research with user needs.</li><li class="leading-relaxed">Comfortable being a visible representative of LMArena, engaging openly with the research community, and building a strong personal brand to help shape AI research culture.</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Responsibilities:</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Design and conduct experiments to evaluate AI model behavior across reasoning, style, robustness, and user preference dimensions</li><li class="leading-relaxed">Develop new metrics, methodologies, and evaluation protocols that go beyond traditional benchmarks</li><li class="leading-relaxed">Analyze large-scale human voting and interaction data to uncover insights into model performance and user preferences</li><li class="leading-relaxed">Communicate results with the broader research community via academic papers, educational content, conference talks</li><li class="leading-relaxed">Collaborate with engineers to implement and scale research findings into production systems</li><li class="leading-relaxed">Prototype and test research ideas rapidly, balancing rigor with iteration speed</li><li class="leading-relaxed">Partner with model providers to shape evaluation questions and support responsible model testing</li><li class="leading-relaxed">Contribute to the scientific integrity and transparency of the LMArena leaderboard and tools</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Who is LMArena?</h2>Created by researchers from <a href="https://sky.cs.berkeley.edu/" target="_blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">UC Berkeley’s SkyLab</a>, LMArena is an open platform where everyone can easily access, explore and interact with the world’s leading AI models. By comparing them side by side and casting votes for the better response, the community helps shape a public leaderboard, making AI progress more transparent, and grounded in real-world usage.<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Why Join Us?</h2>Trusted by organizations like Google, OpenAI, Meta, xAI, and more, LMArena is rapidly becoming essential infrastructure for transparent, human-centered AI evaluation at scale. With over one million monthly users and growing developer adoption, our impact is helping guide the next generation of safe, aligned AI systems—grounded in open access and collective feedback.Our work is regularly referenced by industry leaders pushing the frontier of safe and reliable AI. <a href="https://x.com/sundarpichai/status/1899779090472644881" target="blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">Sundar Pichai</a>, <a href="https://x.com/JeffDean/status/1819121162578022849" target="blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">Jeff Dean</a>, <a href="https://x.com/elonmusk/status/1827055547599712757" target="blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">Elon Musk</a>, and <a href="https://x.com/sama/status/1815877987696533897" target="blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">Sam Altman</a>.<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">High Impact: Your work will be used daily by the world’s most advanced AI labs.</li><li class="leading-relaxed">Global Reach: Develop data infrastructure powering millions of real-world evaluations, influencing AI reliability across industries at the top-tier</li><li class="leading-relaxed">Exceptional Team: We are a small team of top talent from Google, DeepMind, Discord, Vercel, UC Berkeley, and Stanford.</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Requirements:</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">PhD or equivalent research experience in Machine Learning, Natural Language Processing, Statistics, or a related field</li><li class="leading-relaxed">Uses personal and professional platforms to amplify open research initiatives and invite collaboration.</li><li class="leading-relaxed">Strong understanding of LLMs and modern deep learning architectures (e.g., Transformers, diffusion models, reinforcement learning with human feedback)</li><li class="leading-relaxed">Proficiency in Python and ML research libraries such as PyTorch, JAX, or TensorFlow</li><li class="leading-relaxed">Demonstrated ability to design and analyze experiments with statistical rigor</li><li class="leading-relaxed">Experience publishing research or working on open-source projects in ML, NLP, or AI evaluation</li><li class="leading-relaxed">Comfortable working with real-world usage data and designing metrics beyond standard benchmarks</li><li class="leading-relaxed">Ability to translate research questions into practical systems and collaborate across engineering and product teams</li><li class="leading-relaxed">Passion for open science, reproducibility, and community-driven research</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">What we offer:</h2><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">The cash compensation for this position has not yet been finalized. Actual compensation will depend on job-related knowledge, skills, experience, and candidate location.</li><li class="leading-relaxed">Competitive salary and meaningful equity</li><li class="leading-relaxed">Comprehensive healthcare coverage (medical, dental, vision)</li><li class="leading-relaxed">The opportunity to work on cutting-edge AI with a small, mission-driven team</li><li class="leading-relaxed">A culture that values transparency, trust, and community impact</li></ul>Come help build the space where anyone can explore and help shape the future of AI.<a href="https://jobs.ashbyhq.com/lmarena/c499927c-0385-4a78-99b5-895914b7596c/application" target="_blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">Apply for this Job</a>This site is protected by reCAPTCHA and the Google <a href="https://policies.google.com/privacy" target="blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">Privacy Policy</a> and <a href="https://policies.google.com/terms" target="blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">Terms of Service</a> apply.

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Forescout Technologies Inc.

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Forescout Technologies, a global cybersecurity leader, is seeking an engaging Regional Account Manager. This role involves achieving quarterly and annual sales goals, identifying and closing sales opportunities within an assigned regional territory, and driving business development. The manager will build in-depth knowledge of client priorities, establish value-added relationships, and educate customers on solution value, working with a virtual team to maximize revenue and establish Forescout as a strategic partner.

Professional Services Engineer - DoD

Principal Professional Services Engineer

Director of Cloud Operations (Azure/FedRAMP)

Professional Services Engineer

Threat Hunter

Customer Success Manager

Security Analyst

DevOps Engineer

<h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Description</h3>Who We AreWe envision a world where every cyber asset is seen, secure, and compliant., a global cybersecurity leader, continuously identifies, protects, and helps ensure the compliance of all managed and unmanaged cyber assets – IT, IoT, IoMT, and OT. For more than 20 years, Fortune 100 organizations and government agencies have trusted to provide vendor-agnostic, automated cybersecurity at scale.What You Will Dohas an excellent opportunity for an engaging and employee-focused Regional Account Manager to join our high-energy, multi-cultural, world-changing team.We are looking for individuals that want to take their entrepreneurial spirit, competitive drive, and positive energy to take and their career to the next level. In this role, you will be responsible for the following:<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Achieve quarterly and annual sales goals and objectives by developing pipeline and driving business transactions as a part of a regional team comprised of sales, marketing, and channel</li><li class="leading-relaxed">Identify, pursue, and close sales opportunities within an assigned regional territory</li><li class="leading-relaxed">Drive business development and pre-sales initiatives by leveraging your strong industry and technical background</li><li class="leading-relaxed">Build in-depth knowledge of clients’ business priorities, challenges, and initiatives that can be translated into solution opportunities</li><li class="leading-relaxed">Build value-added relationships within the domain of the account to become the trusted advisor</li><li class="leading-relaxed">Use technology, products, processes, industry expertise, and consultative sales skills to assess and educate customers on value of solutions</li><li class="leading-relaxed">Develop multi-level relationships within your accounts using available internal and external resources, and where appropriate channel partner resource, to maximize revenues opportunities, and establish as a strategic, long-term partner</li><li class="leading-relaxed">Execute an effective account/opportunity management and business planning process which is supported and influenced by a virtual team to include Senior Executives, Field Sales, and Sales management, Product Management, Engineering, Professional Services, Technical Consultants, and relevant Channel Partner Managers</li><li class="leading-relaxed">Align with appropriate delivery teams to leverage follow-on business from one delivery mission to another</li><li class="leading-relaxed">Attend major Project Milestones and Executive Reviews</li></ul>What You Bring toWe encourage you to apply if you meet most but not all the requirements listed below. We value competency, aptitude, effort, and a great attitude as a supplement to experience.<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Bachelor’s degree or equivalent industry experience with 8+ years of selling technology solutions to C-level executives in large complex customer environments.</li><li class="leading-relaxed">Ability to build rapport easily and immediately with your customers and coworkers.</li><li class="leading-relaxed">Competitive nature, coin-operated, goal oriented with a strong drive to win.</li><li class="leading-relaxed">Hunter mentality with strong sales acumen and the ability to build “sticky” relationships.</li><li class="leading-relaxed">Experience selling security software solutions such as endpoint, firewall, SIEM, NAC, etc.</li><li class="leading-relaxed">Excellent prospecting and business development skills including proven track record of recent sales to enterprise accounts with 5,000+ employee companies.</li><li class="leading-relaxed">Proven success working with Global 2000 companies.</li><li class="leading-relaxed">Solution selling multi-product software and hardware solutions.</li><li class="leading-relaxed">Excellent presentation skills with the ability to influence positive outcomes to the benefit of .</li><li class="leading-relaxed">Proven ability to work effectively with and across all levels of business contacts within large and complex organizations.</li><li class="leading-relaxed">Excellent negotiator working with our customers and partners to complete terms, conditions, considerations, and pricing.</li><li class="leading-relaxed">Team player that collaborates within an internal set of multi-functional teams such as Sales Engineers, Inside Reps, Marketing, and Professional Services to ensure target quotas as achieved and exceeded.</li><li class="leading-relaxed">Thrives in a high-paced, changing work environment.</li><li class="leading-relaxed">Multi-tasking while maintaining attention to detail and deadlines.</li></ul>What Offers You<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Competitive compensation and benefits–we cover 80% of employee and dependents’ health care premiums, 100% company paid employee life and disability insurance premiums, 401K match, generous FTO policy (U.S. only), option to purchase voluntary life, accident and critical illness insurance, employee assistance program, maternity and parental bonding leave with supplemental pay and much more</li><li class="leading-relaxed">Collaborative and innovative environment –make an impact on worldwide security while working on the hottest technology</li><li class="leading-relaxed">Leadership that supports and encourages professional growth and development</li><li class="leading-relaxed">Want a glimpse of Life @ ? Check us out on Facebook and Instagram</li><li class="leading-relaxed">Learn more @ <a href="http://www.forescout.com/" target="_blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">www.forescout.com</a></li></ul>Our Mission - Continuously identify, protect, and ensure the compliance of all cyber assets across the modern organization.Our Values<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">One Team – We all work together, and we all win together.</li><li class="leading-relaxed">Cyber Obsessed – We are curious about technology, and we are innovative and passionate about solving big programs.</li><li class="leading-relaxed">Customer Driven – We listen, we learn, and we make it right.</li><li class="leading-relaxed">Relentless – We're smart, determined, and find a way. We figure stuff out.</li><li class="leading-relaxed">Collaborative, without Ego – No one succeeds alone. We strive to be the humble person that people want to work with.</li></ul>Thank you for taking the time to learn more about us.If this opportunity intrigues you, we would love for you to apply!NOTE TO EMPLOYMENT AGENCIES: We value the partnerships we have built with our preferred vendors. does not accept unsolicited resumes from employment agencies. All resumes submitted by employment agencies directly to any employee or hiring manager in any form without a signed Employment Placement Agreement on file and search engagement for that position will be deemed unsolicited in nature. No fee will be paid in the event the candidate is subsequently hired because of the referral or through other means.is proud to be an Equal Employment Opportunity Employer. We value and embrace diversity, equality, inclusion, and collaboration at the core of our “One Team” philosophy. We do not discriminate based on race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics.

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