AI Staff Machine Learning Engineer - Generative AI and Big Data

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.

Archer Aviation Inc. is developing all-electric vertical takeoff and landing (eVTOL) aircraft in San Jose, California. The company aims to advance sustainable air mobility by producing and operating a four-passenger aircraft designed to lower noise pollution. Archer values ambitious engineering, welcomes complex technical challenges, and fosters an inclusive, equitable workplace where every team member's input matters. Role overview The Staff Engineer, Flight Modeling & Simulation, will focus on developing and refining simulation models that support the design, certification, and operation of Archer’s eVTOL aircraft. Key responsibilities Develop advanced flight simulation physics models tailored for eVTOL aircraft. Conduct vehicle-level trade studies to inform design decisions. Enhance electrical, thermal, and performance model accuracy by incorporating lab and flight test data to support vehicle certification. Collaborate with internal teams and external suppliers to integrate their systems into the overall vehicle simulation framework. Contribute to design and analysis efforts to help meet both business and regulatory requirements with a high degree of confidence.

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 While conventional AI relies heavily on chat interfaces and outdated devices, Hark is pioneering the future with agentic systems that communicate naturally with people and their environments.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.

Archer Aviation develops all-electric vertical takeoff and landing (eVTOL) aircraft for four passengers, with an emphasis on low noise and sustainable air travel. Based in San Jose, California, the company is committed to making environmentally friendly mobility more accessible. Archer values diverse perspectives and aims to create an inclusive workplace where everyone can thrive. Role overview The Staff Modeling & Simulation Engineer will advance vehicle modeling, simulation, and analysis for Archer's eVTOL aircraft. This role supports technical development and works across teams to help ensure vehicle performance and safety. Main responsibilities Vehicle performance & modeling: Develop and refine vehicle performance models, conduct trade studies at the vehicle level, and set and validate performance requirements. Handling & maneuvering: Assess flying and handling qualities, determine maneuvering parameters, and verify the aircraft meets responsiveness and safety standards. Dynamics & aeromechanics: Carry out system identification and linearization of complex vehicle dynamics. Analyze aeromechanics and aeroelasticity to support stability. Flight controls support: Support flight control system design, including notch filter development and defining operational envelopes. Simulation & hazard analysis: Characterize aircraft performance and capabilities through simulation, supporting Functional Hazard Analyses (FHAs) at the vehicle level. Data analysis & model validation: Analyze flight test data, identify sources of inaccuracies in models, and improve vehicle physics models. Systems integration: Collaborate with internal and external suppliers to integrate systems into vehicle simulations, including dynamics, powertrain, actuation, sensors, and environmental modeling.

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 cutting-edge hardware, establishing a universal interface between humans and machines. Unlike traditional AI, which relies on outdated chat interfaces and devices, Hark is pioneering the future: agentic systems that communicate naturally with individuals and their environments. To achieve this vision, we are collaboratively developing multimodal models alongside next-generation AI hardware, engineered from inception as a cohesive interface for the new era of intelligent systems. About the Role We are seeking a Mid-Level Technical Staff Member specializing in AI training to spearhead the development of innovative training strategies that effectively connect pre-training and post-training phases. This role is crucial in shaping how our models gain advanced reasoning, planning, and tool-utilization skills at scale. You will be instrumental in the core of model capability development, determining how data, algorithms, and systems converge to unlock the next level of agent behavior. Responsibilities Design and implement mid-training strategies to enhance agent capabilities such as reasoning, planning, tool usage, and long-term decision-making. Scale synthetic data generation pipelines (e.g., coding, agent trajectories, multimodal data) and optimize data mixtures to boost downstream reinforcement learning performance. Construct and optimize distributed training pipelines for large models, ensuring efficiency, stability, and scalability across GPU clusters. Develop and refine evaluation frameworks to assess model capabilities (e.g., task success, reasoning quality, tool usage accuracy) and guide training refinements. Conduct comprehensive experimentation and ablations to clarify training dynamics, scaling behavior, and identify bottlenecks. Collaborate across functions with pre-training, post-training, and product teams to synchronize model development with practical agent applications. Lead technical innovations in areas such as long-context learning, data distillation, and training efficiency, contributing to the overall model roadmap.

About EtchedEtched is pioneering the development of the world's first AI inference system specifically designed for transformer architectures, achieving over 10x greater performance and significantly reduced costs and latency compared to conventional solutions like the B200. With Etched's custom ASICs, you can create innovative products that were previously unattainable with GPU technology, such as real-time video generation models and advanced deep reasoning agents. Supported by substantial investments from top-tier venture capitalists and a team of elite engineers, Etched is transforming the foundational technology layer for the most rapidly evolving sector in history.Job SummaryWe are on the lookout for a talented and driven Post-Silicon Validation Engineer to become part of our vibrant team. The successful candidate will play a pivotal role in bringing up, validating, and characterizing ASICs from the initial silicon phase through to the production ramp-up. This critical position ensures the functional accuracy, performance integrity, and reliability of our advanced AI and machine learning accelerator hardware, facilitating the successful launch of our innovative products.

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 developing advanced and personalized systems that are proactive, multimodal, and capable of seamless interaction through speech, text, vision, and persistent memory. We aim to revolutionize the interface between humans and machines by integrating advanced intelligence with next-generation hardware. While existing AI mainly relies on outdated devices and chat interfaces, Hark is pioneering the next generation of agentic systems designed for natural interaction with people and the real world. To achieve our vision, we are creating multimodal models and state-of-the-art AI hardware from the ground up, establishing a unified interface for a new era of intelligent systems. About the Role We are seeking a skilled Member of Technical Staff to lead our Infrastructure Compute team, focusing on large-scale GPU computing clusters that power our AI training and deployment workloads. This role sits at the intersection of systems engineering and machine learning infrastructure, ensuring the reliability, scalability, and efficiency of the compute platform critical to our research and engineering teams. This is a high-impact position ideal for individuals passionate about infrastructure as a product and adept in complex distributed systems environments. Responsibilities Design, implement, and maintain Infrastructure as Code (IaC) best practices to facilitate repeatable, auditable, and scalable cluster provisioning. Enhance and secure CI/CD deployment pipelines for robust, efficient, and low-latency model service delivery across production environments. Manage and optimize stable training infrastructure operating with over 10,000 GPUs, focusing on job scheduling, fault tolerance, and network fabric efficiency. Collaborate closely with ML researchers and engineers to identify and resolve compute bottlenecks through infrastructure enhancements. Monitor system health, establish Service Level Objectives (SLOs), and lead incident response for critical training and inference workloads. Drive capacity planning, implement cost-efficiency initiatives, and manage the hardware lifecycle across the GPU fleet. Contribute to the development of internal tools and platform abstractions to enhance the developer experience for teams utilizing compute resources.

Archer Aviation is a pioneering aerospace company located in San Jose, California, dedicated to the development of an innovative all-electric vertical takeoff and landing (eVTOL) aircraft. Our mission is to revolutionize sustainable air mobility, providing an exceptional travel experience while minimizing environmental impact.At Archer, we are driven by high aspirations and challenging objectives. We recognize that a diverse workforce enhances creativity and innovation, leading us to greater success. We are committed to fostering an inclusive and equitable workplace that embraces our unique perspectives and celebrates the contributions of every team member.Key Responsibilities:Design and develop advanced flight simulation physics models for eVTOL aircraft.Conduct vehicle-level trade studies to inform design decisions.Enhance the fidelity of system electrical, thermal, and performance models using data from lab and flight tests to facilitate vehicle certification.Collaborate with both internal and external suppliers to integrate their systems into our comprehensive vehicle simulation framework.Assist in design and analysis activities to ensure compliance with business and regulatory requirements at a high confidence level.

Join archer56 as a Senior Sensor Modeling Engineer, where you will play a pivotal role in advancing our sensor technologies. You will be responsible for developing advanced modeling techniques that enhance the performance of our sensor products. This position involves collaborating with cross-functional teams to ensure our sensors meet the highest quality and performance standards.

Archer Aviation Inc., based in San Jose, California, develops all-electric vertical takeoff and landing (eVTOL) aircraft. The company focuses on sustainable air mobility and reducing noise pollution, aiming to reshape the future of transportation. Archer values an inclusive and diverse workplace that encourages innovation. Role overview The Aerodynamics Engineer - Modeling & Optimization will work on aerodynamic analysis and model development for Archer's eVTOL aircraft. This position centers on improving simulation accuracy and supporting the advancement of Archer’s aerodynamic software tools. What you will do Run aerodynamic simulations for eVTOL aircraft using models of varying fidelity. Create both linear and non-linear aerodynamic models to predict aircraft performance in different flight conditions. Analyze data from flight tests and wind tunnels to find discrepancies, validate, and refine aerodynamic models. Integrate flight test data into simulation models using established techniques. Help improve Archer’s aerodynamic software suite by optimizing methods and workflows. Work closely with cross-functional teams and pilots to ensure accurate modeling and resolve technical issues.

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.

Location: San Jose or Los Angeles, CA (Hybrid)At FloQast, we are on a mission to revolutionize the way accounting teams function by leveraging AI-driven workflows. Our platform, recognized and trusted by thousands of companies worldwide, serves as a robust operating system for accounting, simplifying complex financial processes into quick, dependable, and scalable systems.We are seeking a Senior Staff Software Engineer who is not just a software builder, but a platform architect who accelerates team performance and catalyzes significant innovations.This pivotal role involves making architectural choices that will shape the entire FloQast application ecosystem, significantly enhancing innovation across our product suite.

Nagarro is seeking a talented and motivated Associate Staff Engineer to join our dynamic engineering team in San Jose. In this role, you will contribute to innovative projects, collaborate with cross-functional teams, and help drive technical solutions that impact our clients. This position is ideal for individuals eager to grow their skills in a fast-paced environment.

Archer Aviation, located in San Jose, California, is a pioneering aerospace firm dedicated to developing an all-electric vertical takeoff and landing aircraft. Our mission is to propel the advantages of sustainable air mobility forward. We are innovating in the design, manufacturing, and operation of an all-electric aircraft capable of transporting four passengers while minimizing noise pollution.We set ambitious goals and tackle challenging problems, believing that a diverse workplace enhances our intelligence, fosters better insights, and ultimately leads to collective success. We are committed to nurturing an equitable and inclusive environment that values our differences and supports every team member. Key Responsibilities:Develop, maintain, and enhance Archer's network infrastructure.Design and implement LAN/WAN solutions, including SD-WAN technology.Collaborate with the Information Security team to align with security strategies and plans.Provide support and troubleshoot network-related issues, including after-hours assistance as needed.Coordinate with vendors regarding the scope of services, project timelines, execution, and acceptance of deliverables.Create and maintain comprehensive documentation of network topology and standards.Conduct research and document comparisons for cost, vendors, and services.Execute procedures to meet compliance requirements (SOX, ISO, etc.).Draft internal procedure documentation and client-facing knowledge base articles.Generate, update, and communicate network metrics to the IT Leadership Team.

Join dstaff as a Staff Cloud Engineer and play a crucial role in building and maintaining our cloud infrastructure. You will work with a talented team to develop scalable cloud solutions that meet our clients' needs. Your expertise in cloud technologies will contribute to the success of our projects, enhancing our service delivery.

Join Renesas Electronics Corporation as a Staff Application Engineer, where you will play a pivotal role in designing and implementing innovative solutions that drive our business forward. Collaborate with cross-functional teams to develop cutting-edge applications that enhance our product offerings and meet customer needs.

About Zscaler Zscaler drives digital transformation for organizations worldwide, helping customers operate with agility, efficiency, resilience, and security. The company’s cloud-native Zero Trust Exchange platform uses one of the world’s largest security data lakes to protect clients from cyber threats and data breaches. Zscaler securely connects users, devices, and applications, no matter where they are. Here, results matter more than titles. Teams value transparency, encourage honest and constructive discussion, and move quickly to deliver quality outcomes. Zscaler’s culture centers on customer focus, collaboration, ownership, and accountability. The company looks for innovators who use AI to make a real impact and who thrive in an environment that uses intelligent systems to stay ahead of emerging threats. Role Overview The Staff AI Engineer, People & Culture Technology, joins Zscaler’s IT/Corporate Apps department in a hybrid role based in San Jose, California. This position reports to the Director of Enterprise Systems Programming and requires in-office presence three days per week. What You Will Do Advance the HR technology stack by combining deep Workday knowledge with AI-driven development. Use AI-assisted coding and agentic workflows to build automated solutions for People & Culture (HR) challenges. Enhance intelligent employee experiences across the HR ecosystem. Who Thrives Here Engineers who enjoy high-impact, high-accountability work and move with urgency. Those motivated by purpose and skilled at solving complex problems. People who want to help secure the future of AI-driven cybersecurity. If this describes your approach, Zscaler welcomes your expertise to help shape the next era of cybersecurity.

About the OpportunityJoin a leading global networking organization that is revolutionizing the way businesses manage their networks. Our AI Core group is pioneering innovative platforms in Generative AI, AI Agents, RAG, Knowledge Bases, Data Mining, Anomaly Detection, and LLM fine-tuning, all of which are integral to our flagship products and the creation of new offerings. Here, innovation is not just welcomed; it's a fundamental expectation.The RoleAs an AI ML Engineer, you will serve as a pivotal technical leader and thought leader, influencing our ML strategy and developing intelligent, high-performance multi-agent systems that can perceive, learn, and react in real time.Your ResponsibilitiesDefine and guide the technical vision for ML solutions across our products and platforms.Oversee the complete software development lifecycle, from design and code reviews to deployment and operational management.Design high-performance, scalable microservices, including both synchronous and asynchronous web services.Create real-time inference pipelines for complex models utilizing Triton, TensorRT, and mixed-precision computing.Mentor fellow engineers, establish technical direction, and cultivate a robust team culture.Promote engineering excellence, system resilience, and ongoing operational enhancements.

Join Renesas Electronics, a global leader in advanced semiconductor solutions, as a Staff Application Engineer. In this pivotal role, you will leverage your expertise to develop and enhance innovative applications that drive the future of technology.As a part of our dynamic team in San Jose, you will collaborate with cross-functional teams to deliver exceptional solutions that meet client needs. Your contributions will be vital in shaping the next generation of electronic products.