Infrastructure Engineer for Large-Scale AI Training

About Hark Hark is at the forefront of artificial intelligence, dedicated to creating sophisticated, personalized intelligence systems. Our technology is proactive, multimodal, and designed to interact seamlessly with the world through speech, text, vision, and persistent memory. We are revolutionizing the AI landscape by integrating this intelligence with c…

About Hark Hark is at the forefront of artificial intelligence innovation, dedicated to creating advanced, personalized intelligence that is proactive, multimodal, and able to engage with the world through speech, text, vision, and persistent memory. We are combining this intelligence with cutting-edge hardware to establish a universal interface between humans and machines. While existing AI typically operates through chat boxes and outdated devices, Hark is pioneering the future: intelligent systems that naturally interact with people and their environments. To achieve this, we are developing multimodal models and state-of-the-art AI hardware, designed from the ground up as a cohesive interface for a new era of intelligent systems. About the Role The Omni team at Hark is creating the next generation of AI experiences that extend beyond text, enabling models to comprehend and generate content across diverse modalities, including text, audio, and vision. Our mission is to develop seamless, real-time multimodal intelligence that enhances intuitive and immersive user experiences. As a member of the Omni team, you will play a critical role in advancing real-time audio, video, and multimodal models. This position encompasses full-stack development—from data and modeling to training, serving, and product integration. You will contribute to both pretraining and posttraining initiatives while collaborating closely with product teams to push the limits of model capabilities and deliver outstanding end-to-end user experiences.

About Hark Hark is at the forefront of artificial intelligence, dedicated to creating sophisticated, personalized solutions that are proactive and multimodal. Our technology interacts with the world through speech, text, vision, and persistent memory. We are integrating this intelligence with cutting-edge hardware to establish a universal interface for human-machine interaction. Unlike existing AI that primarily relies on chat boxes and outdated devices, Hark is pioneering the future with agentic systems that engage naturally with users and their environments. To realize this vision, we are innovating multimodal models alongside next-generation AI hardware, purposefully designed as a cohesive interface for a new era of intelligent systems. About the Role The Omni team at Hark is developing the next generation of AI experiences that extend beyond traditional text-based interactions. Our aim is to enable models that comprehend and generate content across diverse modalities, including text and vision, fostering seamless and immersive user experiences. As a member of the Omni team, you will play a pivotal role in advancing real-time audio, video, and multimodal world models. This position encompasses working across the full technology stack—from data management and modeling to training, serving, and product integration. You will be instrumental in both pretraining and posttraining initiatives, collaborating closely with product teams to enhance model capabilities and deliver outstanding, end-to-end user experiences.

About Hark Hark is a cutting-edge artificial intelligence company focused on creating advanced, personalized intelligence systems. Our technology is proactive, multimodal, and designed to engage with the world through speech, text, vision, and persistent memory. We are integrating this intelligence with next-generation hardware to establish a universal interface between humans and machines. While conventional AI relies heavily on chat interfaces and outdated devices, Hark is pioneering the future with agentic systems that communicate naturally with people and their environments. To achieve this vision, we are developing multimodal models in conjunction with innovative AI hardware, creating a comprehensive interface for a new era of intelligent systems. About the Role We are in search of a Post-Training Member of Technical Staff to spearhead the development of strategies that define how our models enhance coding, computer utilization, and agentic capabilities on a large scale. This position is at the cutting edge of a rapidly evolving field, where reinforcement learning, simulation, and large-scale model training intersect to create agents that can reason, plan, and execute tasks over extended periods. There is no established playbook; we seek researchers and engineers who can apply rigor and creativity from related domains—such as reinforcement learning, robotics, game systems, compiler tools, formal verification, or program synthesis—to advance the next generation of coding and agentic AI. Responsibilities Design and implement RL-based post-training strategies to develop robust coding agents capable of multi-step reasoning and tool use. Construct and scale simulation environments for agentic reinforcement learning, including code execution sandboxes and verifiable reward systems. Create reward modeling pipelines, including various reward signals, and refine them based on training dynamics. Enhance synthetic data generation and trajectory distillation processes to improve sample efficiency in RL training. Conduct thorough ablation studies to assess the interplay between algorithm choices, data mixtures, and reward shaping in agentic contexts. Establish evaluation frameworks based on real agent tasks to measure progress and inform development. Collaborate with mid-training, infrastructure, and product teams to translate research findings into practical model enhancements.

Join Hark: Pioneering AI InnovationAt Hark, we are at the forefront of artificial intelligence, crafting advanced, personalized intelligent systems that proactively engage with the world through speech, text, vision, and persistent memory.We are revolutionizing the human-machine interaction landscape by integrating our sophisticated intelligence with next-gen hardware, setting the stage for a universal interface that transcends outdated chatboxes. Our mission is to develop agentic systems capable of natural interactions with both individuals and the environment.Our focus is on creating multimodal models and cutting-edge AI hardware, built from the ground up as a cohesive interface for a transformative era of intelligent systems.Role OverviewAs a valuable member of the Omni team at Hark, you will be instrumental in shaping the future of AI experiences beyond mere text. Our aim is to enable models to comprehend and create content across various modalities, including text and vision, leading to seamless, real-time multimodal intelligence that drives intuitive and immersive user experiences.Your contributions will span the entire stack—from data and modeling to training, serving, and product integration. You will play an essential role in both pretraining and post-training initiatives, collaborating closely with product teams to expand the capabilities of our models and deliver outstanding end-to-end user experiences.

About Hark Hark is at the forefront of artificial intelligence, creating cutting-edge, personalized intelligence systems that are proactive and multimodal. Our technology interacts naturally with the world through speech, text, visual input, and persistent memory. We are integrating this intelligence with next-generation hardware to establish a universal interface between humans and machines. While current AI primarily relies on outdated chat interfaces and devices, Hark is focused on pioneering the future: agentic systems capable of seamless interaction with individuals and their environments. Our mission involves developing multimodal models alongside next-gen AI hardware, designed as a cohesive interface for a new era of intelligent systems. About the Role As a vital member of Hark's Omni team, you will contribute to the development of innovative AI experiences that transcend text, enabling models to comprehend and produce content across various modalities, including audio. Our objective is to forge real-time multimodal intelligence that facilitates intuitive and immersive user experiences. Your role will entail advancing speech and audio functionalities within multimodal foundation models. You will engage in comprehensive tasks—from data and modeling to training, evaluation, and real-time deployment—pushing the frontiers of speech intelligence and enhancing human-computer interaction.

About Hark Hark is a pioneering artificial intelligence company dedicated to creating advanced and personalized intelligence systems. Our focus is on building proactive, multimodal AI capable of engaging with the world through speech, text, vision, and persistent memory. We are merging this intelligence with cutting-edge hardware to establish a universal interface between humans and machines. While current AI largely relies on chat boxes and outdated devices, Hark is at the forefront of developing the next generation of agentic systems that interact naturally with users and their environment. To achieve our ambitious goals, we are developing multimodal models alongside next-generation AI hardware, designed from the ground up as a single, integrated interface for a new era of intelligent systems. About the Role The Omni team at Hark is revolutionizing AI experiences beyond text, focusing on enabling models to comprehend and generate content across various modalities, including text, audio, and vision. Our mission is to create seamless, real-time multimodal intelligence that enhances intuitive and immersive user experiences. As a key member of the Omni team, you will be responsible for developing large-scale pretraining systems and foundational models. This entails working across the entire stack—from data curation and large-scale training infrastructure to model architecture and optimization. You will significantly contribute to advancing the core capabilities of our models through extensive pretraining efforts.

Join OKX as a Staff AI Engineer specializing in Model Post-Training and Alignment. In this pivotal role, you will lead initiatives that enhance the performance and alignment of AI models. You will work with cutting-edge technologies and collaborate with cross-functional teams to drive innovation in AI solutions.

Role overview The Mid-Level Environmental Planner at AECOM in San Jose works on projects that emphasize sustainable solutions. This position involves applying environmental planning skills to practical challenges while collaborating with a multidisciplinary team. Key responsibilities Conduct environmental assessments for a variety of project types Work closely with colleagues to shape planning strategies Assist in delivering environmental services that meet client objectives and regulatory requirements Contribute to planning efforts that support sustainability and compliance Team culture The team at AECOM values expertise and collaboration, focusing on high-quality work that addresses both client and regulatory expectations. Members share a commitment to practical, effective solutions in environmental planning.

About EtchedAt Etched, we are pioneering the development of the world’s first AI inference system specifically designed for transformers, providing over ten times higher performance while significantly reducing costs and latency compared to traditional options. Our innovative ASICs empower the creation of products that were previously unattainable with GPUs, such as real-time video generation models and advanced deep reasoning agents. Supported by substantial investments from leading venture capitalists and a team of elite engineers, Etched is transforming the infrastructure for one of the fastest-growing industries globally.Job SummaryWe are seeking an enthusiastic Technical Recruiter at the entry level, eager to learn and take the reins of their own responsibilities. In this role, you will be guided by seasoned recruiters, collaborate closely with hiring managers and leadership, and manage your own recruitment processes. This is an exciting opportunity for personal and professional growth.Key ResponsibilitiesManage your own recruitment requisitions from start to finish, including sourcing, screening, coordinating, and closing candidates.Identify and engage candidates in unconventional spaces: GitHub, arXiv preprints, niche Discord servers, mailing lists, and conference speaker lineups.Facilitate structured interview processes and lead candidate debriefs in collaboration with hiring managers.Collaborate with lead recruiters on offer strategies and candidate closings.Contribute to the development of our recruiting systems and processes, leaving your mark on our hiring practices.QualificationsYou may be a great fit if you possess the following qualifications:0–2 years of experience in recruiting, sales, sourcing, or talent coordination, or relevant self-taught experience, with a strong desire to grow in this field.Demonstrated commitment beyond formal education through involvement in clubs, personal projects, sports, volunteering, or similar pursuits.Genuine curiosity about AI, hardware, or deep technology—engineering knowledge is not required, but an interest in these areas is essential.Ability to work swiftly, resolve challenges independently, and seek assistance when necessary.A collaborative mindset with low ego and high motivation, focusing on outcomes rather than personal recognition.

At Extreme Networks, we serve over 50,000 customers worldwide with our cutting-edge, cloud-driven networking solutions. Our clients rely on our award-winning services and exceptional support to propel their digital transformation initiatives, achieving remarkable advancements in their operations. With consistent double-digit growth each year, we are uniquely positioned to deliver scalable results.We prioritize inclusion as one of our core values, fostering a workplace that embraces diversity and cultivates an environment where every employee can thrive. Join us and be part of a team that values your unique contributions!Take the opportunity to be a part of something monumental at Extreme! As a global leader in networking, now is the perfect time to join our innovative team.Position: AI Staff Machine Learning Engineer - Generative AI, Machine Learning, Graph ML, Big DataExperience: 5 to 14 YearsWork Arrangement: Hybrid/RemoteOur AI Core group is at the forefront of developing platforms and solutions centered around Generative AI, including AI Agents, Retrieval-Augmented Generation (RAG), Knowledge Bases, Data Mining, Anomaly Detection, and fine-tuning Large Language Models (LLM). These innovations drive our flagship Extreme products while paving the way for entirely new offerings. We are committed to transforming how businesses manage networks by creating intelligent, high-performance multi-agent systems that can perceive, learn, and act in real-time. At Extreme, innovation is not just welcomed; it is expected. Join us to help shape the future of network intelligence!

About TENEXTENEX is a pioneering provider of Managed Detection and Response (MDR) solutions, driven by AI and designed for scalability. We empower organizations to reinforce their cybersecurity defenses through cutting-edge threat detection, swift response capabilities, and ongoing protection. Our diverse team comprises seasoned professionals with extensive backgrounds in cybersecurity, automation, and AI technology. Supported by prominent investors, we are in a phase of rapid expansion and are looking for exceptional individuals to join us in transforming the MDR landscape.In the role of Chief of Staff - Director of Technical Program Management at TENEX, you will act as a vital catalyst for our executive and technical teams. Your mission will be to foster strategic alignment, enhance operational efficiency, and ensure the seamless execution of all technical programs, thereby driving the successful realization of our ambitious product roadmap. This position is key to scaling our engineering organization, managing cross-functional projects, and serving as an essential link between leadership and engineering teams.Culture is a cornerstone of our identity at TENEX.AI. We encourage you to explore our culture deck at culture.tenex.ai to see how we embody collaboration and community in our on-site work environment.Location: This role involves working onsite in our San Jose, CA office from Monday to Thursday, with the option to work from home on Fridays.

About ZscalerZscaler stands at the forefront of zero trust security, serving as a global leader in safeguarding the digital landscape. Major corporations, vital infrastructure entities, and government agencies trust Zscaler to protect users, branches, applications, and devices while also driving their digital transformation efforts. Our Zero Trust Exchange platform, enhanced by advanced AI, defends against billions of cyber threats daily, streamlining operations and boosting productivity for modern enterprises by minimizing costs and complexity.At Zscaler, we prioritize impact over titles, fostering a culture where trust is established through results. We value transparency and encourage constructive, honest discussions to quickly identify the best ideas. Our high-performing teams are designed to deliver impactful results with excellence. We're dedicated to cultivating a culture of execution focused on customer obsession, collaboration, ownership, and accountability.We advocate for an “AI Forward, People First” philosophy to spur innovation and empower our teams to realize their full potential. If you are motivated by purpose, enjoy tackling complex challenges, and aspire to make a meaningful impact on a global scale, Zscaler invites you to contribute your talents to redefine the future of cybersecurity.RoleWe are seeking a Senior Software Development Engineer to join our innovative Engineering team. This hybrid position is based in our San Jose, CA office and reports directly to the Director of Software Engineering. Our Engineering team has developed the world’s largest cloud security platform from inception, and we continue to grow. With over 100 patents and ambitious plans to enhance our services and expand our global reach, we have established ourselves as a leader in cloud security, serving over 15 million users across 185 countries. Join us and collaborate with a team of cloud architects, software engineers, and security specialists, enabling organizations globally to leverage speed and agility through a cloud-first strategy.What you’ll do (Role Expectations)

Join OKX as a Principal AI Engineer specializing in AI Agent Development. In this pivotal role, you will spearhead the design and implementation of cutting-edge AI agents that drive automation and enhance user experience. Collaborating with cross-functional teams, you will leverage your expertise in artificial intelligence to innovate and propel our technology forward.

Role Overview Western Digital seeks a Principal Learning and Development Partner based in San Jose. This role shapes learning initiatives and helps build a culture of ongoing improvement across the company. The Principal Partner works closely with teams to spot skill gaps, create effective learning strategies, and roll out training programs that strengthen employee performance and align with business objectives.

Astera Labs (NASDAQ: ALAB) develops rack-scale AI infrastructure, offering advanced connectivity solutions for data centers and AI applications. The company partners with hyperscalers and industry leaders to enable organizations to maximize the potential of modern AI technologies. Its Intelligent Connectivity Platform brings together CXL®, Ethernet, NVLink, PCIe®, and UALink™ semiconductor technologies, integrated with the COSMOS software suite, to support diverse connectivity needs. Astera Labs also delivers custom solutions alongside its standards-based portfolio, helping clients build architectures suited to their specific requirements. More details can be found at www.asteralabs.com. Role overview This AI/ML Intern for Silicon Development Automation role is based in San Jose, CA. The internship centers on developing AI-driven workflows that accelerate silicon chip design. The work involves using generative AI and deep learning to enhance Electronic Design Automation (EDA) processes, with a particular emphasis on frontend design and verification. What you will do Support the creation of AI-powered automation for silicon development, including circuit design, verification, and debugging tasks. Assist in integrating EDA tools with large language model (LLM) capabilities.

San Jose or LA CA (Hybrid)At FloQast, we are revolutionizing the way accounting teams function with our AI-driven workflows. Our platform is trusted by thousands of companies worldwide, serving as a comprehensive operating system for accounting that streamlines intricate financial processes into efficient, dependable, and scalable systems.We are in search of a Staff Software Engineer who not only develops software but also contributes to shaping platforms, enhances team efficiency, and drives substantial impact. In this pivotal role, your architectural choices will significantly affect the entire FloQast application ecosystem, directly fostering innovation across our product offerings.

Job Title: AI Data Center Business Development ManagerOffice Location: San Jose, CAJob Type: Full-TimeWork Model: Onsite About SK hynix AmericaAt SK hynix America, we are at the forefront of semiconductor innovation, crafting advanced memory solutions that empower a wide range of technologies from smartphones to data centers. As a global leader in DRAM and NAND flash technologies, we are driving the evolution of mobile technology, enabling cloud computing, and pioneering future technologies. Our state-of-the-art memory solutions are integral to the most advanced electronic devices and IT infrastructure, enhancing performance and user experiences in the digital world.We seek imaginative minds to join our mission of shaping the future of technology. At SK hynix America, you will be part of a dedicated team that is pioneering groundbreaking memory solutions while prioritizing sustainability. We are not just adapting to technological shifts; we are leading them, with significant investments in artificial intelligence, machine learning, and eco-friendly operational practices. As we expand our market presence and push the boundaries of semiconductor technology, we invite you to embark on a journey to create the next generation of memory solutions that will define the future of computing.About This Role:This role is pivotal in leading the commercialization and monetization strategy for SK AI's Data Center Testbed, transforming our technical infrastructure into viable business models, including Testbed-as-a-Service (TBaaS) offerings. As a strategic member of the AI Infrastructure Solutions team, you will architect new business models leveraging our AI datacenter capabilities to generate revenue streams through partnership-based service offerings. A unique blend of strategic insight, financial expertise, and ecosystem development knowledge is essential to design innovative contribution models—spanning monetary investments, in-kind resources, and equity partnerships with technology solution providers. You will establish the organizational framework and RACI (Responsibility Assignment Matrix) across SK Group member companies while ensuring the seamless execution of commercialization initiatives. The ideal candidate will have a deep understanding of cloud service economics, GPU-as-a-Service (GPUaaS) business models, and experience structuring mutually beneficial partnership frameworks that drive sustainable ecosystem growth.

Company OverviewTENEX is a cutting-edge, AI-driven Managed Detection and Response (MDR) provider, dedicated to enhancing the cybersecurity frameworks of organizations through superior threat detection, swift response mechanisms, and ongoing protection strategies. Our team consists of seasoned professionals with extensive backgrounds in cybersecurity, automation, and artificial intelligence solutions. Supported by prominent investors, we are in a phase of rapid expansion and are on the lookout for exceptional talent to help us transform the MDR landscape.In your role as a Staff AI Solutions Architect at TENEX, you will serve as a pivotal technical leader responsible for the comprehensive design, implementation, and deployment of AI and machine learning solutions that underpin our core MDR offerings. Your expertise will be essential in translating intricate cybersecurity issues, threat intelligence, and product vision into robust, scalable, and production-ready AI architectures. This position acts as a crucial link between our Data Science, Product, and Engineering teams, ensuring our AI models achieve optimal impact and operational efficiency for our security analysts and clients.At TENEX, our culture is paramount—explore our culture deck at culture.tenex.ai to discover how we promote an environment of collaboration and community in our in-person work while providing the flexibility that top talent deserves.Location: This position requires onsite attendance 4 days a week at our San Jose, CA; Kansas City, MO; or Sarasota, FL locations.