Lead Data Engineer

Join Upwork Inc. (Nasdaq: UPWK), a dynamic leader in connecting businesses with cutting-edge, AI-powered talent globally. Our comprehensive suite of services includes the Upwork Marketplace, offering on-demand access to skilled professionals across various work types, as well as Lifted, which provides tailored solutions for enterprises to efficiently source,…

About xAIAt xAI, we are dedicated to developing artificial intelligence systems that can accurately interpret the complexities of the universe, ultimately aiding humanity in its quest for knowledge. Our team is compact, driven, and unwaveringly committed to engineering excellence. We seek individuals who thrive on challenges and have a natural curiosity. Operating within a flat organizational structure, we encourage all employees to take initiative and contribute actively towards our mission. We value a strong work ethic and prioritization skills, alongside effective communication abilities, enabling team members to share insights succinctly and meaningfully. About the RoleIn the role of Image Specialist Tutor, you will play a critical role in enhancing Grok's capabilities to interpret and create engaging and aesthetically pleasing visual content. Your proficiency in photography, digital art, or design, combined with a proven history of producing and showcasing visual work, will be key to your success. Experience with generative AI in image creation will be highly beneficial.ResponsibilitiesYou will utilize proprietary software to label, annotate, and provide inputs on various projects involving visual media. Your focus will be on delivering high-quality, curated data that captures the subtleties of visual elements, thereby strengthening Grok's expertise in composition, lighting, color, and stylistic nuances.Required QualificationsA strong portfolio showcasing exceptional visual work in photography, digital art, illustration, graphic design, or related fields (personal website, social media accounts, Behance, Dribbble, ArtStation, DeviantArt, etc.).Proficient understanding of composition, lighting, color theory, and visual storytelling.Hands-on experience with AI image generation tools (such as Grok Imagine, Midjourney, Nano Banana, Flux, Stable Diffusion, or similar).Capability to critically assess and articulate the factors that contribute to the success or failure of an image.Excellent communication and analytical skills.Strong written and spoken English proficiency.Preferred QualificationsExperience in collaborative projects that involve visual media.Understanding of current trends in AI and digital art.

Our VisionAt Tinder, we believe that the thrill of meeting new people is one of life’s greatest joys. We are dedicated to nurturing the magic of human connection, engaging tens of millions of users worldwide. With hundreds of millions of downloads, over 2 billion swipes daily, 20 million matches each day, and a presence in more than 190 countries, our influence is vast and continually expanding.Our team collaborates to tackle intricate challenges, blending insights from human relationships, behavioral science, network economics, AI, and machine learning, while prioritizing user safety and cultural sensitivity. We explore the depths of loneliness, love, and connection.Internship DurationThe internship will take place from June 1 to August 28, 2026.Work EnvironmentThis is a hybrid position, requiring in-office collaboration three days a week in our Palo Alto, California office.Role OverviewAs a member of the Tinder ML team, you will play a crucial role in shaping the product experience across diverse domains, including Recommendations, Trust & Safety, Profile Management, Chat, Growth, and Revenue. Our goal is to leverage machine learning to enhance user experiences, build trust, and drive business growth within Tinder's ecosystem. This internship offers a unique opportunity to work alongside experienced engineers to develop and implement machine learning solutions that align with Tinder’s strategic objectives.

Join Mashgin as a Senior Software Engineer and contribute to revolutionizing the checkout experience for millions. In this role, you will develop innovative software solutions that power our state-of-the-art kiosks, enabling customers to complete their transactions in under a second. You’ll be involved in the entire product lifecycle, from conception and design to development and deployment, ensuring a high-quality product that meets our customers' needs. Collaborate with a dynamic team and leverage your skills to impact our technology and business goals significantly.

Join Mashgin, a pioneering force in transforming checkout experiences, as a Full Stack Software Engineer. In this role, you will be at the forefront of developing software that operates our innovative kiosks and supports the robust infrastructure behind them. You will not only build conventional web stacks but also work on integrating code that connects with our hardware and visual elements, ensuring our kiosks deliver exceptional reliability and an outstanding user experience. This is a holistic role where you will embrace end-to-end project ownership, participating in every phase of the product lifecycle, from concept and design to execution and deployment, while contributing across various parts of our diverse codebase in multiple programming languages.

Join Mashgin, a trailblazer in AI-powered checkout solutions, as a Technical Lead Software Engineer. Here, you'll play a crucial role in developing innovative hardware and software products that revolutionize customer experiences. You will be hands-on in every phase of product development, from ideation and design to prototyping and execution, focusing on high-quality standards and impactful features. If you're passionate about building exceptional products and thrive in a dynamic environment, this is your chance to make a real difference.

About HarmonicHarmonic is an innovative startup pioneering the development of the world's most sophisticated mathematical reasoning engine, recently achieving Gold Medal-level performance at the 2025 International Math Olympiad (IMO). With support from leading global investors, we are strategically expanding our elite technical team to drive our ambitious mission.Role OverviewWe are seeking a passionate Frontend Software Engineer to lead the initial development of Harmonic's web-based products and marketing initiatives. In this role, you will play a key role in transforming advanced Mathematical Superintelligence into engaging and user-friendly consumer experiences while also shaping Harmonic's narrative in the digital space. We value self-motivated individuals with a proven history of delivering ambitious, impactful, and user-focused products, showcasing expertise in creating high-performance, scalable, and intuitive frontend web applications.Key ResponsibilitiesLead the comprehensive development of our web applications, guiding the technical design, implementation, and deployment of high-quality products from inception to launch.Enhance user experience by creating intuitive web interfaces and optimizing application performance.Collaborate closely with product managers, designers, and research teams to conceptualize, prototype, and develop innovative features that convert complex technological concepts into seamless user interactions.Utilize AI-driven tools (e.g., Cursor, GitHub Copilot) to streamline development processes and establish best practices in mobile engineering.Oversee the development of Harmonic’s website, engineering blog, and other marketing collateral.What We SeekExpertise in Web Development: Demonstrated success in delivering ambitious, user-centric web applications from concept to launch.Product-Centric Mindset: Strong user empathy and product intuition, with enthusiasm for creating experiences that are both impactful and delightful.Proactive and Independent: Ability to thrive in a dynamic, collaborative, and often ambiguous environment while consistently producing results.Cross-Functional Collaboration: Excellent communication skills with a proven track record of effective teamwork across product, design, and engineering disciplines.

About xAIAt xAI, we are on a mission to develop advanced AI systems that enhance our understanding of the universe and help humanity achieve its knowledge goals. Our dedicated team is small yet highly driven, emphasizing engineering excellence. We value individuals who thrive on curiosity and are eager to tackle challenges head-on. With a flat organizational structure, we empower all employees to take initiative and contribute meaningfully to our mission. Exceptional work ethic, prioritization skills, and strong communication abilities are essential for success in our collaborative environment. About the RoleWe are in search of outstanding engineers eager to embark on an innovative project aimed at integrating Grok into every aspect of our Advertising Platform. We seek individuals with extensive experience in developing high-performance advertising products and systems at scale, encompassing bidding, auction, marketplace dynamics, ranking, prediction, and product functionalities. Your expertise will help us leverage xAI’s technology stack to revolutionize our advertising solutions.Your ResponsibilitiesUtilize state-of-the-art Grok models to enhance all facets of our advertising stack, including candidate selection, ranking, auctions, campaign optimization, creative development, and improving the advertiser experience.Take ownership of systems and products that drive significant revenue for the company.Who You AreYou possess 3+ years of industry experience in creating large-scale, high-throughput, AI-driven advertising solutions.Technical ProficienciesProficient in Python, Jax, and Rust.LocationOur engineering team is based in Palo Alto, CA. While we typically work from the office five days a week, we offer flexible work-from-home options when needed.Interview ProcessUpon submitting your application, our team will review your resume and documentation of your outstanding work. If your application meets our criteria...

Join our dynamic team as a Senior Big Data Software Engineer, where you'll play a pivotal role in developing scalable applications and data processing systems that serve millions of job seekers and thousands of employers. In this hybrid work environment, you'll engage in both remote and in-office collaboration to build fast, efficient, and intelligent solutions that enhance the job search experience. Your expertise will help shape our cutting-edge marketplace technology, enabling seamless connections between talent and opportunity.

Join Our Innovative Team at xAIAt xAI, we are on a mission to develop advanced AI systems capable of deep comprehension of the universe, ultimately assisting humanity in its quest for knowledge. Our team is small yet highly motivated, dedicated to engineering excellence and driven by curiosity. We encourage individuals who thrive in challenging environments and seek to push boundaries. Embracing a flat organizational structure, we empower all employees to be hands-on contributors to our mission, rewarding those who demonstrate initiative and commitment to exceptional results. Strong communication skills are essential, enabling team members to share insights effectively.About the RoleThe Mid-Training Team at xAI is tasked with creating an omni model that comprehensively understands the universe through various modalities: text, image, video, and audio. We are seeking talented engineers with expertise in multimodal mid-training data to help us achieve this goal.Technical Expertise RequiredPythonJAX and XLASparkRayLocationThis position is located in the Bay Area, specifically in Palo Alto and San Francisco. Candidates should either be based in the Bay Area or be open to relocation.Key ResponsibilitiesScale synthetic coding data to trillions of tokens utilizing large-scale Docker verification.Transform flagship model intelligence into streamlined flash models through synthetic data generation.Optimize mid-training data mixtures to enhance reinforcement learning outcomes.Engineer innovative long-context data recipes.Develop comprehensive and diverse evaluation methods for mid-training checkpoints.Preferred QualificationsExpertise in machine learning and large model scaling, with a solid understanding of various scaling laws.Proven ability to design and execute machine learning experiments.Familiarity with state-of-the-art techniques for curating training data across text, image, audio, and video modalities.Strong analytical and problem-solving skills.

Senior / Staff Technical Program ManagerCompany Overview:Join brightai, a pioneering Physical AI organization, as we revolutionize business interactions with the physical world through advanced intelligent automation. Our cutting-edge AI platform analyzes visual, spatial, and temporal data gathered from billions of real-world events across edge devices, mobile sensors, and cloud infrastructures. We are on the lookout for a dynamic Technical Program Manager to play a key role in our expanding team. Responsibilities:Lead the entire development life cycle of innovative solutions while managing intricate projects.Oversee the project’s life cycle from ideation to closure, including post-project evaluations.Craft logical solutions to complex business challenges through inquiry, thorough analysis, and collaboration with decision-makers.Collaborate with product teams to devise strategies and roadmaps that deliver exceptional capabilities to our clients.Partner with senior engineers to design optimal technical approaches for new product development.Balance and manage multiple projects, including moderately complex initiatives.Ensure timely delivery of products within the established budget.Stay updated on advancements in product technologies.Assess the implications of emerging business trends on our operations. Skills and Expertise:Minimum of 6 years of experience in leading and building high-performing engineering teams.Comprehensive knowledge of the full product development life cycle.Proven success in transforming enterprise technology processes across diverse disciplines.Experience in technology operations and support, with proficiency in cloud-based technologies.Strong technical skills with hands-on experience.Familiarity with software, hardware, and firmware solutions.Exceptional project management skills with experience in matrix organizations.Demonstrated leadership abilities with a proactive approach to inspiring teams.Strong communication and interpersonal abilities.Capability to navigate and thrive in ambiguous situations. Bonus Criteria:Experience with digital transformation projects utilizing AI and IoT technologies.Proficiency in Linux or related environments.

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 on a mission to develop cutting-edge AI systems that not only comprehend the complexities of the universe but also empower humanity in its quest for knowledge. Our team is small yet highly driven, dedicated to achieving engineering excellence. We welcome individuals who relish challenges and have an insatiable curiosity. Operating with a flat organizational structure, we encourage hands-on contributions from all team members towards our collective mission. Leadership is earned through initiative and consistent high performance, making work ethic and prioritization crucial. Strong communication skills are essential, as sharing knowledge effectively with teammates is a key expectation.About the RolexAI is on the lookout for skilled software engineers to construct robust data pipelines, develop comprehensive evaluation frameworks for benchmarking large language models (LLMs), and create automation solutions that enhance the productivity of our researchers and engineers.Focus AreasDeveloping and maintaining frameworks for agent, data, and model evaluation tasks.Creating environments for AI agents.Designing tools to automate common workflows.Enhancing alerts, metrics, and error handling for large-scale reinforcement learning tasks.Refactoring existing agent, data, evaluation, and training frameworks for improved modularity.Establishing operational procedures and coding standards to facilitate the transition from small-scale experiments to large-scale reinforcement learning training.Implementing unit tests and CI/CD frameworks to support rapid development cycles.Ideal ExperienceProven experience in building and maintaining frameworks utilized by multiple engineers.Expertise in creating high-performance sandboxes, virtual machines, and simulations.Experience in developing full-stack applications for workflow automation and data visualization.Capability in rapidly iterating research into production cycles.Knowledge in test automation and CI/CD practices.Typical Challenges You Will EncounterExploring new agentic model capabilities...

Join our dynamic team at Artech Information Systems LLC as a Senior C++/Embedded Developer. In this pivotal role, you will leverage your expertise in C++ programming and embedded systems to develop innovative solutions that drive our projects forward. You will collaborate with a talented group of engineers, contributing to cutting-edge technology that makes a significant impact.

At PsiQuantum, we are on a groundbreaking journey to create the first practical quantum computers—machines that can unlock the transformative potential the field has long promised. Established in 2016, our mission has been singular: to design and deploy million-qubit, fault-tolerant quantum systems.Our quantum computers leverage the principles of quantum mechanics to tackle complex problems beyond the reach of even the most powerful supercomputers or AI systems. The implications of our work will extend across various sectors, including energy, pharmaceuticals, finance, agriculture, transportation, materials, and other critical industries.Our innovative architecture is rooted in silicon photonics, allowing us to utilize advanced semiconductor manufacturing processes—partnering with leaders like GlobalFoundries—to produce billions of chips for telecommunications and consumer electronics. Photonics offers distinct advantages for scaling, such as immunity to heat and electromagnetic interference, and compatibility with existing cryogenic cooling and fiber-optic systems.In 2024, PsiQuantum announced government-backed initiatives to facilitate the construction of our first utility-scale quantum computers in Brisbane, Australia, and Chicago, Illinois. These projects signify a growing acknowledgment that quantum computing will play a pivotal role in shaping the future, making it essential to accelerate our scaling efforts.In addition to hardware, we are committed to developing the algorithms and software that will render these systems commercially viable. Our application, software, and industry teams collaborate closely with top Fortune 500 companies—including Lockheed Martin, Mercedes-Benz, Boehringer Ingelheim, and Mitsubishi Chemical—to tailor quantum solutions for tangible real-world outcomes.Quantum computing represents not just an advancement of classical computing but a fundamental shift, paving the way for solving challenges that have remained insurmountable. The potential is vast, and we have a clear trajectory to realize it.We invite you to be part of this exciting journey!

Join our innovative team at Elorian AI Inc. as we spearhead the development of cutting-edge visual intelligence solutions. We are on the lookout for exceptional researchers and engineers who are passionate about advancing the field of artificial intelligence. If you are committed to excellence and thrive in a dynamic environment, we would love to hear from you.

Speechify seeks a Tech Lead for its Android Core Product team in Palo Alto, CA. This leadership role centers on guiding the development and enhancement of Android applications that form the backbone of the Speechify platform. The focus is on delivering reliable app performance and a smooth user experience. Role responsibilities Lead a team of Android engineers through every phase of product development Shape and influence architectural choices for the Android product suite Work closely with cross-functional partners to clarify goals and coordinate deliverables Mentor junior team members and support their technical growth Promote software development best practices throughout the team Requirements Proven experience leading Android development teams Deep understanding of Android application architecture and performance tuning Comfort collaborating with product, design, and engineering partners Interest in speech technology and motivation to create meaningful impact This position is located in Palo Alto, CA.

Senior Software Engineer - AI Agent DevelopmentDepartment: Engineering | Location: Palo Alto HQ | Type: Full-time, On-siteAbout the RoleAt Pika, we are on a mission to redefine the capabilities of AI agents. We seek a skilled Senior Software Engineer to innovate and expand the functionalities of our AI systems. Your work will focus on developing the underlying architectures that empower our agents with personality, memory, reasoning, multi-modal capabilities, and autonomous operation across various platforms, bringing our AI products to life.In this role, you will craft agent architectures, construct tool-use frameworks, enhance interactions with large language models (LLMs), and implement systems that enable our agents to learn, remember, and adapt over time. If you have a passion for creating AI systems that exhibit genuine intelligence rather than mere API interfaces, then this opportunity is tailored for you.What You'll Do• Design and enhance the agent runtime, focusing on reasoning, tool utilization, memory retrieval, and response generation.• Develop agent capabilities, including image generation, voice synthesis, video creation, web browsing, code execution, and more.• Optimize LLM integration through prompt engineering, context management, multi-provider model routing, cost efficiency, and latency minimization.• Implement robust memory systems, including long-term, working, and episodic recall, to facilitate agent learning from interactions.• Create autonomous behaviors that enable proactive actions, scheduled tasks, and goal-oriented activities for self-directed agents.• Establish evaluation metrics and quality systems through benchmarks, A/B testing, and assessments of agent behavior and personality consistency.• Experiment with innovative architectures, such as multi-agent collaboration and chain-of-thought reasoning.• Collaborate with product and design teams to seamlessly integrate AI capabilities into user-friendly experiences.What We're Looking For• A minimum of 5 years of software engineering experience, with at least 2 years focused on LLMs or AI agent systems.• Profound understanding of LLM capabilities and limitations, with expertise in maximizing their potential.• Experience in creating agent systems that incorporate tool use, function calling, multi-step reasoning, and retrieval-augmented generation (RAG).• Strong skills in prompt engineering, including system prompts, few-shot learning, chain-of-thought approaches, and structured outputs.• Proficiency in TypeScript and/or Python.• Familiarity with embedding models and vector search mechanisms for memory and retrieval.• Ability to conduct rapid experimentation, measure outcomes, and iterate based on findings.• A keen product intuition for distinguishing between AI agents that appear

1XFounded in 2015, 1X is pioneering the development of sophisticated humanoid robots tailored for household applications. Our mission is to generate a plentiful workforce through safe and intelligent humanoid technology.We are committed to excellence, tackling some of the toughest challenges in robotics alongside the world's most talented professionals. Every component of our robots, from motor coils to AI, is designed and manufactured in-house, showcasing our vertically integrated approach. At 1X, you will take ownership of significant projects, receive recognition for your contributions, and be rewarded based on your performance.At 1X Labs, our goal is to provide the science and technology necessary for achieving human-level, general-purpose humanoids.We meticulously identify the disparities between current humanoid performance and the demands of human-level capabilities. Our approach dives deep into fundamental principles, taking innovative and often unconventional paths, developing new technologies, and seamlessly integrating those advancements into our products. Our unique position allows us to transform research outcomes into tangible products through our focused and tightly integrated strategies in materials, component design, systems engineering, and manufacturing.Humanoids represent an intricately integrated system. Significant advancements emerge only when sensing, actuation, materials, control, and intelligence evolve in unison, each pushed to its limits. 1X Labs is composed of individuals who have excelled in their respective fields, enabling them to confidently navigate those limits and engage meaningfully with adjacent domains, understanding the critical constraints at play.You possess deep expertise in your area, with intuition shaped by years of tackling challenging, concrete problems. Your interdisciplinary approach is a natural outcome of mastery and collaboration on systems where no single discipline suffices.We invite you to join an environment where technical depth is paramount, ideas are rigorously tested, and impactful research is defined by its ability to ship successful products..Join Us: Innovate to Advance Humanoids to Human-Level Capabilities1X Labs is dedicated to bridging the gap between today's humanoids and human-level capabilities.

Join a Visionary Company Transforming the FuturePalantir Technologies is at the forefront of revolutionizing software for data-centric decision-making and operational excellence. Our cutting-edge platforms harness the power of data to empower our partners in developing life-saving medications, predicting supply chain interruptions, locating missing persons, and much more.About the RoleAs a key member of Palantir's defense product team, you will be instrumental in creating mission-critical applications that support modern warfare. Our solutions provide a secure ecosystem for users to integrate, visualize, and analyze their data effectively, enabling them to build comprehensive tools such as common operating pictures, alert triaging systems, and resource allocation planners driven by advanced machine learning models. Our defense tools are essential for operational success in command centers and on battlefields across the globe.This position focuses on front-end development for our defense applications, where you will design and create user-friendly interfaces that organizations rely on daily to enhance national security. You will engage in user research to understand their requirements, identify opportunities for improvement, and collaborate with teammates to address complex UX challenges. You will tackle sophisticated technical problems, define solution designs, and incrementally deliver new features. Additionally, you will manage APIs and schemas that power your frontend code while collaborating closely with backend engineers. This role offers continuous learning opportunities in areas such as type theory, operational transforms, 2D and 3D mapping, UI design systems, high-performance graphics rendering, and optimizing software for complex user needs.Key ResponsibilitiesAs a front-end engineer for our defense products, you will be engaged throughout the entire product lifecycle—from ideation and design to prototyping, execution, and deployment.