AI Developer Experience

About xAIAt xAI, we strive to develop artificial intelligence systems that genuinely comprehend the universe, enhancing humanity's quest for knowledge. Our team, though compact, possesses immense motivation and a commitment to engineering excellence. We are looking for individuals who enjoy pushing their limits and have an insatiable curiosity. Operating under a flat organizational structure, we encourage all employees to engage hands-on in our mission, where leadership is awarded to those who exhibit initiative and consistently deliver outstanding results. Strong work ethic and prioritization skills are essential, as is the ability to communicate effectively and share knowledge clearly with teammates.Role OverviewWe are seeking a talented individual adept in image and video generation and editing.

Position OverviewJoin our innovative team at Nace.ai as we push the boundaries of artificial intelligence through cutting-edge research in large language models (LLMs) and vision-language models (VLMs). We are in search of a talented AI Research Engineer with a strong focus on adaptive learning methodologies, including meta-learning and hypernetworks. Your role will encompass the design and implementation of advanced architectures for dynamic model adaptation, enhancing model reasoning capabilities, and effectively sharing insights with both research and engineering teams.Essential Qualifications:Demonstrated experience with LLMs or VLMs in both research and production environments.Strong foundational knowledge in Natural Language Processing, Machine Learning, or related fields, particularly in language model development.A proven history of tackling complex challenges in language understanding and generation, employing rigorous quantitative methods.Exceptional communication skills for conveying research findings to varied technical audiences.Proficiency in Python and familiarity with deep learning frameworks such as PyTorch, JAX, or TensorFlow, alongside experience in distributed training and model optimization.Desirable Qualifications:PhD in Computer Science, Computational Linguistics, or a closely related discipline with an emphasis on language models and adaptive learning frameworks.Substantial research and engineering background with LLMs/VLMs, particularly in meta-learning or parameter-efficient adaptation, supported by grants, fellowships, patents, or contributions to open-source initiatives.First-author publications in recognized peer-reviewed conferences (ACL, EMNLP, NeurIPS, ICML, ICLR) or journals focusing on language models, meta-learning, hypernetworks, or adaptive AI.Preferred Technical Expertise:In-depth research knowledge in LLM reasoning, hypernetworks, multi-task learning, meta-learning, and the design of innovative LLM adaptation techniques, including online continual learning.

At Rhoda AI, we are pioneering the development of a comprehensive platform for the next generation of humanoid robots. Our ambition encompasses everything from high-performance, software-defined hardware to the foundational models and video world models that govern their operations. Our robots are engineered as versatile generalists, adept at navigating intricate, real-world environments and addressing scenarios that are not encountered during training. We operate at the confluence of large-scale learning, robotics, and systems, with a research team that includes esteemed researchers from Stanford, Berkeley, Harvard, and other renowned institutions. Rather than merely enhancing a feature, we are constructing an entirely new computing platform dedicated to physical tasks. With over $400M raised, we are aggressively investing in research and development, hardware innovation, and scaling up manufacturing to realize this vision.Key ResponsibilitiesLead research initiatives focused on foundational models and world models for robotics, including representation learning, dynamics/prediction, planning, and control.Define research challenges and formulate hypotheses rooted in real-world robotic autonomy requirements.Design and execute rigorous experiments at scale, encompassing ablations, benchmarking, and evaluation methodologies.Develop and assess model architectures aimed at enhancing long-horizon predictions, rollout quality, and overall robotic task performance.Investigate and improve pre-training and post-training processes, including fine-tuning, alignment, and evaluation of large multimodal models.Collaborate closely with Research Engineers to translate innovative ideas into scalable training pipelines and dependable systems.Effectively communicate research findings through internal documentation, presentations, and reviews.Publish and present research at prestigious venues.Required QualificationsPh.D. in a relevant discipline such as Machine Learning, Robotics, Computer Science, Electrical Engineering, Applied Mathematics, or Computer Vision.Demonstrated strong publication record in high-quality research (e.g., NeurIPS, ICML, ICLR, CoRL, RSS, ICRA, CVPR).In-depth knowledge of current machine learning techniques, particularly in areas such as:Deep learning and representation learning.Sequence modeling and transformers.Generative modeling (e.g., diffusion, autoregressive, latent-variable models).

Role OverviewJoin Nace.ai as a Tax Consultant / Tax Model Reviewer, where you will independently evaluate and test our advanced tax models. Your key responsibility will be to critically analyze the underlying assumptions in our models, pinpoint errors and inconsistencies, and offer actionable recommendations for improvements. You will ensure that our models adhere to relevant tax laws and practical standards, thereby playing a vital role in maintaining the accuracy and reliability of our tax outputs. In addition, you will engage in Model Training, Performance and Accuracy Optimization, Dataset Curation, and Product Testing.Key Responsibilities:Conduct comprehensive reviews of tax models and algorithms utilized by Nace.ai.Identify erroneous assumptions, questionable calculations, and logical inconsistencies in tax-related model outputs.Evaluate whether existing models accurately reflect regulatory requirements and practical tax rules.Provide clear and actionable recommendations for corrections and logic adjustments.Articulate the rationale behind identifying specific approaches as incorrect and the potential risks involved.Assist Product and Engineering teams in understanding tax limitations, risks, and business logic that impact the models.Engage in discussions and offer expert insights during the design of new tax-related features.Qualifications:Minimum of 5 years of professional experience in tax consulting, audit & tax, or a related advisory capacity.Thorough knowledge of the U.S. tax system, including federal, state, and local tax regulations, with hands-on experience interpreting IRS guidelines and applying U.S. corporate and indirect tax rules in practical scenarios.Significant expertise in enterprise and individual tax regulations.Demonstrated ability to critically review models, financial, tax, and regulatory assumptions, as well as validate calculations.Strong analytical skills and structured thinking, with meticulous attention to detail.Exceptional communication skills to effectively articulate complex concepts.

PsiQuantum is hiring a Senior Manager of Quantum Model Validation. This role leads a team responsible for validating the quantum models that support the company's technology. The position is open to candidates in Palo Alto, California, or those who prefer to work remotely. Key responsibilities Direct the assessment of quantum models, focusing on their accuracy and reliability Lead and mentor a team of subject matter experts in quantum model validation Collaborate with teams across PsiQuantum to support and strengthen quantum computing systems Play a role in advancing the company's quantum technology Team leadership This position involves guiding a group of experts and working with colleagues throughout the company to ensure high standards in quantum model validation. The work directly supports PsiQuantum's mission to develop advanced quantum computing systems.

Join Array Labs, a pioneering company that develops cutting-edge radar systems to enhance our understanding and response to global changes.Our ambitious project involves deploying a coordinated fleet of radar satellites aimed at generating a high-resolution 3D map of Earth. This real-time data will empower governmental and commercial organizations to make informed, swift decisions in disaster response, infrastructure resilience, and critical geopolitical intelligence.At Array Labs, we handle the design and construction of our satellites from start to finish, creating the most advanced Earth observation satellites in the world. Our fleet promises unparalleled accuracy, coverage, and responsiveness, delivering essential insights precisely where they are needed most.

AI Research Engineer, World ModelsPalo Alto, CA (On-site)About 1XAt 1X, we are pioneering the development of humanoid robots designed to collaborate with humans, addressing labor shortages and fostering abundance across various industries.The RoleAs an AI Research Engineer specializing in world models, you will create expansive multi-modal generative models that project future sensor inputs and robotic actions derived from historical data. These foundational models empower robots to comprehend and navigate complex real-world environments. Your responsibilities will span data engineering, model architecture, and deployment, with the goal of enhancing robot autonomy. This position merges innovative research with pragmatic product development, challenging the boundaries of robotic intelligence.

Join the Revolution at ALSO.At ALSO, we are pioneers in electric mobility, initially established as a part of Rivian. Our dynamic team is made up of builders, dreamers, and innovators dedicated to crafting revolutionary vertically integrated small electric vehicles (EVs) that tackle the mobility challenges of today and tomorrow. Our mission is to encourage everyone to switch to ALSO, transforming local car, truck, and SUV travel into rides on more affordable, enjoyable, and significantly more efficient vehicles, boasting efficiency improvements of 10-50 times.We are actively seeking a Vehicle Modeling and Data Analyst Engineer to play a pivotal role in ensuring the reliability of our cutting-edge electric mobility vehicles throughout their development lifecycle. As a Physical Systems Modeling & Data Analyst, you will connect theoretical modeling with actual performance. Your responsibilities will include building and enhancing physics-based and data-driven models of vehicle systems such as powertrains, batteries, thermal management, and structural components. You will analyze telemetry and fleet data to guide engineering design choices, testing protocols, and product development.

About xAIAt xAI, our vision is to develop AI systems that deeply comprehend the universe and assist humanity in its quest for understanding. Our team is a close-knit, highly driven group committed to engineering excellence. We welcome individuals who relish challenges and thrive on curiosity. Operating within a flat organizational structure, we expect all employees to be hands-on contributors to our mission. Proactive leadership is recognized, and a strong work ethic combined with exceptional prioritization skills is essential. Effective communication is crucial, as employees must be able to share knowledge clearly and precisely with colleagues.ROLE OVERVIEW:Join our Grok Voice Model team to engineer the leading voice AI technology. We aim to facilitate seamless, natural, low-latency spoken interactions that are expressive, multilingual, and reliable across devices and real-time applications. We manage the entire training pipeline, encompassing extensive data curation, high-quality audio processing, cutting-edge speech-language pre-training, and rigorous post-training to maximize quality, speed, and stability.Our aspiration is to make conversing with AI feel like engaging with the most charming, knowledgeable, and kind individual imaginable. We are in search of exceptionally intelligent, execution-focused engineers to help us achieve this goal.

About the Arc Institute The Arc Institute is an innovative scientific research organization dedicated to conducting groundbreaking basic science and technology development focused on understanding and treating complex human diseases. Based in Palo Alto, California, we operate independently while collaborating with leading institutions such as Stanford University, UCSF, and UC Berkeley. We believe that advancing scientific research requires new institutional models. Our approach includes: Comprehensive Funding: We fully finance our Core Investigators’ research teams, freeing them from the traditional constraints of project-based external grants. Advanced Technology: Recognizing the growing complexity of biomedical research, our Technology Centers develop, optimize, and deploy cutting-edge experimental and computational technologies in partnership with our Core Investigators. Exceptional Support: We provide unparalleled operational, financial, and scientific support, enabling researchers to undertake ambitious, high-risk projects aimed at significant advancements in curing diseases such as neurodegeneration, cancer, and immune dysfunction. Cultivating a Positive Culture: We prioritize a research environment that nurtures scientific curiosity, a commitment to truth, broad ambition, and collaborative spirit. Having grown to over 350 staff with more than $650 million in committed funding and a state-of-the-art lab facility, the Arc Institute is poised for rapid expansion in the coming years. About the Position The Zhou Lab is seeking passionate, diligent, and inquisitive candidates. Our specialization lies in single-cell epigenomic modeling, utilizing high-throughput single-cell multiomic technologies and computational models to investigate the spatiotemporal dynamics of gene regulation. The chosen applicant will be pivotal in pushing the boundaries of generative AI applications in biology, focusing on DNA sequences, gene regulation, and perturbation modeling. You will be tasked with developing machine learning models tailored for biological data by leveraging innovative ML architectures, interpretability techniques, and more. Furthermore, your models will be applied to significant computational biology tasks, including genome mining and molecular interaction analysis.

Technical Staff Member - Foundation Model Architecture & AI InfrastructureJoin Vinci, a leading innovator in operator intelligence infrastructure for cutting-edge hardware programs. We have successfully demonstrated that a single foundation model can seamlessly operate across various industries on complex production workloads.Leveraged over 45TB of structured physics data for training.Facilitated billion-voxel inference in live production settings.Implemented within Tier-1 semiconductor and hardware environments.Adapted to operate across diverse physical scales and operator regimes.This is not just a research prototype; it is a robust production infrastructure. We are now on a mission to scale our deployment to industrial levels:Enhancing simulation throughput by two orders of magnitude.Transitioning from billion-voxel to trillion-voxel domains.Broadening operator coverage to nonlinear regimes.Enabling global, multi-entity deployments within Tier-1 ecosystems.Our goal is not merely to become a frontier AI lab but to establish the default operator intelligence layer that hardware companies depend on.The Operator FrontierOur unified model currently addresses a subset of partial differential equations within real industrial environments. The next step involves extending this unified architecture across operator systems, including:Maxwell’s equationsElasticityPlasticityNavier–StokesNonlinear constitutive systemsCoupled multiphysics interactionsWe aim to evolve a single operator foundation model that generalizes across industries, physical scales, and conditioning regimes, all while scaling in deployment volume.Key ResponsibilitiesThis position focuses on AI architecture and systems engineering rather than low-level GPU kernel development. You will play a crucial role in defining and enhancing the core operator intelligence layer.

At Inflection AI, we are dedicated to leveraging the transformative capabilities of artificial intelligence to enhance human well-being and productivity.The future of AI will be characterized by agents we can trust to act on our behalf.We are at the forefront of this evolution with our human-centric AI models that integrate emotional intelligence (EQ) with cognitive intelligence (IQ), shifting interactions from mere transactions to meaningful relationships, thereby generating lasting value for individuals and organizations alike.Our initiatives manifest in two primary forms:Pi, your personal AI, designed to be a compassionate companion that enriches everyday life through practical support and insights.Platform — large language models (LLMs) and APIs that empower developers, agents, and enterprises to infuse Pi-level emotional intelligence into experiences where empathy and understanding are crucial.We are building towards a future of AI agents that foster trust, enhance understanding, and create aligned, long-term value for everyone.About the RoleAs a Model Training Engineer, you will be responsible for designing, building, and scaling post-training pipelines that transform general LLMs into brand-fluent, production-ready assistants. Your innovations in fine-tuning and preference optimization techniques (RLHF, DPO, GRPO, RLAIF) will significantly enhance reliability, alignment, and cost-effectiveness.

Join our innovative team at latitude as a Senior Software Engineer specializing in Machine Learning Offboarding Models. In this role, you will leverage your expertise in software engineering and machine learning to develop robust models that enhance our offboarding processes. Your contributions will directly impact our operational efficiency and improve user experiences.As a key member of our team, you will collaborate with cross-functional teams to design, implement, and optimize machine learning solutions. We seek a passionate engineer who thrives in a fast-paced environment and is eager to tackle challenging problems.

Rivian and Volkswagen Group Technologies brings together two established automotive companies focused on shaping the next era of electric mobility. This partnership combines expertise in advanced operating systems, zonal controllers, cloud solutions, and connectivity to address the evolving needs of electric vehicles. The goal: build smarter, more connected, and sustainable vehicles for a global audience. Role overview The Senior Android Developer will design and develop the core Android application used throughout the Rivian and Volkswagen Group Technologies ecosystem. This platform supports key initiatives such as intelligent energy management and integrated digital assistants. The work directly impacts how users experience electric vehicles, aiming to reduce range anxiety and make sustainable transportation accessible and appealing. What you will do Architect and build a large-scale, consumer-facing Android application central to the company’s strategy Create user experiences that support global adoption of electric vehicles Contribute to the Software-Defined Vehicle (SDV) infrastructure, helping to scale solutions across a major joint venture Establish Android architectural foundations for high-volume, first-of-its-kind products Impact This position plays a key part in shaping software that will reach millions of users and influence the future of mobility worldwide. The work will help define how electric vehicles are experienced and adopted, both now and in the years ahead.

We are seeking a skilled Java and Scala Developer to join our innovative team. The ideal candidate will possess a Master’s degree in Computer Science or a related field and have a robust background in software development. You should have at least three years of hands-on experience in software development and a minimum of two years working with distributed systems.Your expertise should include design and implementation of distributed systems, data pipelining, and familiarity with machine learning algorithms. You will be expected to design large-scale applications utilizing various software design patterns and object-oriented design principles.Proficiency in Java, Scala, and Python is essential, alongside experience in distributed computing frameworks like Hadoop, Spark, or cloud technologies. You should also have experience in parallel processing using CUDA, threads, or MPI.We value individuals who have a strong grasp of design patterns, UML diagrams, and data modeling for large-scale analytic systems. Your role will involve research and analysis to transform massive amounts of raw data into structured datasets that maintain contextual integrity, thereby facilitating the development of new products.Familiarity with data warehousing and distributed/parallel processing of large datasets is required. Experience with modern development methodologies such as Agile, Scrum, and SDLC is essential.The ideal candidate will thrive in a research-oriented, fast-paced, and highly technical environment. You should be a quick thinker, a fast learner, and possess excellent communication and interpersonal skills.

Ahrefs is seeking a talented backend developer who possesses a profound understanding of networks, distributed systems, and operating system fundamentals, along with a passion for creating simple yet efficient architectural designs. Our backend infrastructure is predominantly built using OCaml, complemented by some C++ code.In this challenging role, you will work daily with 25 petabytes of live data, utilizing OCaml and Linux.Explore more about Ahrefs OCaml

About xAIAt xAI, we are committed to developing advanced AI systems that accurately interpret the universe and support humanity's quest for knowledge. Our agile team is comprised of highly motivated individuals who prioritize engineering excellence. We welcome those who relish challenges and are driven by curiosity. Operating with a flat organizational structure, we encourage hands-on contributions from all team members to fulfill our mission. Initiative and a track record of excellence are recognized and rewarded. Strong communication skills are essential for effectively sharing knowledge within our team.About the RoleThe Imagine Product team is at the forefront of transforming AI-enhanced media experiences for Grok users globally. In this pivotal role, you will architect and scale robust, high-performance systems that facilitate engaging, multi-modal media interactions—utilizing state-of-the-art AI for the seamless generation, processing, and delivery of a variety of media formats including images, videos, and audio. Your contributions will enhance real-time user experiences that captivate millions, turning sophisticated multimodal models into production-ready features. If you are a passionate problem-solver with a keen interest in AI and media technologies, and are eager to create scalable solutions that influence the future of consumer AI, this is your chance to make a significant impact.

About UsAt Newcode.ai, we are dedicated to revolutionizing the integration of AI into everyday business operations. In just a few months, we have transformed our vision into reality, crafting products that our clients genuinely appreciate. By joining our dynamic and ambitious team, you will not only influence the future of AI but also play a pivotal role in shaping it.Your RoleAs a Senior Backend Engineer at Newcode.ai, you will be responsible for designing and developing the essential systems that underpin our AI solutions. You will engage with cutting-edge technologies, influence our architectural decisions, and make an immediate impact from day one.We are seeking a seasoned backend engineer with significant experience in creating and maintaining robust API solutions using FastAPI. In this critical role, you will work collaboratively with frontend developers to build a stellar Python backend, allowing you to design, assess, and launch innovative products that empower professionals globally in their daily tasks. You will take ownership of the entire technology stack, enjoying the freedom to make a meaningful difference.

Join Artech Information Systems LLC as a Test Automation Developer, where you'll be instrumental in creating robust automated testing frameworks for our cutting-edge applications across iOS, Android, and Web platforms. You will collaborate with cross-functional teams to ensure the highest quality of our software products, enhance user experience, and contribute to continuous integration and delivery processes.