Senior Software Engineer - AI

The Trade Desk is a leading global technology company dedicated to fostering a better, more open internet for everyone through principled, intelligent advertising. With the capability to handle over 1 trillion queries daily, our platform operates at an unparalleled scale. We pride ourselves on our award-winning culture, built on the foundations of trust, own…

Join our dynamic team at reteam, where innovation meets collaboration. We are currently seeking an enthusiastic engineer to contribute to our projects and drive technological advancements within our company.This position is an excellent opportunity for those looking to grow their careers in a supportive environment.

Join Aclima as Our Vice President of Engineering!We are a mission-driven climate technology company focused on creating world-changing innovations. We are in search of a seasoned Vice President of Engineering to spearhead our engineering initiatives across a comprehensive stack of IoT hardware, software, front-end, and cloud operations. You will demonstrate exceptional leadership abilities, possess a clear vision for product architecture, be obsessed with customer satisfaction, and have the technical expertise to collaborate seamlessly across all levels of our engineering team to develop pioneering solutions. The ideal candidate will have a proven track record of building and leading high-performing teams, leveraging firsthand experience to craft technology that truly delights our customers.About AclimaAclima is at the forefront of revolutionizing the scientific monitoring and responsiveness to air pollution in communities, assessing the effectiveness of targeted mitigation efforts. We utilize state-of-the-art sensor technology mounted on fleets of mapping vehicles to monitor air pollution, greenhouse gases, methane, and toxic air pollutants across cities, states, and regions at block-level precision. Our professional analytics platform, Aclima Pro, converts billions of scientific measurements into actionable insights at the source level, delivering Environmental Intelligence to governments, industries, and communities. Our free app provides address-specific air pollution insights for the communities we serve. Aclima is a purpose-driven technology company dedicated to catalyzing bold climate actions that safeguard community health, reduce emissions, and support intelligent governance.Recognized as one of Time Magazine's 100 most influential companies, Aclima has also received accolades such as Fast Company’s 50 Most Innovative Companies in the World, leading in Data Science, and Inc. Magazine’s Best in Business. Other honors include a Fast Company 2022 World Changing Idea, designation as a WEF Technology Pioneer, and recognition as one of the top 100 companies in GovTech for 2023. Our headquarters is located in San Francisco.To explore more about Aclima, please visit https://aclima.io.

Join Airwallex as a Staff Frontend Engineer, AIAt Airwallex, we are redefining the financial landscape for global businesses, offering a unified payments and financial platform that empowers over 200,000 companies worldwide, including renowned brands like Brex, Rippling, and Qantas. Our proprietary infrastructure and innovative software solutions facilitate everything from business accounts to treasury management, enabling seamless embedded finance on a global scale.Founded in Melbourne, our diverse and dynamic team of over 2,000 talented individuals spans 26 offices globally. With a valuation of $8 billion and support from industry-leading investors such as T. Rowe Price and Visa, Airwallex is at the forefront of revolutionizing global banking. If you’re eager to make a significant impact in your career, we invite you to join us.Attributes We ValueWe seek innovative builders with a founder-like spirit who are driven by the desire to create real impact, experience rapid growth, and take ownership. You will bring your expertise and analytical mindset to our mission and operating principles. Your ability to act swiftly while exercising sound judgment, coupled with your curiosity and problem-solving skills, will be essential in navigating complex challenges.As a humble collaborator, you will transform innovative ideas into tangible products and ensure projects are completed efficiently. Leveraging AI, you will enhance productivity and expedite solutions. Here, you will engage with challenging, high-profile projects alongside exceptional colleagues while advancing your career as we shape the future of global finance. If this resonates with you, let’s create what’s next together.About the TeamOur elite team is focused on developing cutting-edge AI solutions that eliminate financial busywork for startups around the world. By delivering intelligent automation across various financial processes, we enable founders to concentrate on scaling their businesses instead of managing intricate financial tasks.We utilize state-of-the-art AI tools, from prompt engineering to fine-tuned models, ensuring the optimal approach for each challenge. By aligning with real-world founder pain points, we take ownership of customer outcomes and drive rapid development.The team is small, highly skilled, and dedicated to innovation, led by experienced operators who have successfully launched AI products at scale. You will have the opportunity to tackle significant technical challenges with a high degree of autonomy and a direct impact on our customers.

Join our client, a pioneering company that specializes in the development of advanced connected hardware-software systems. These innovative solutions provide real-time insights into physical infrastructure through distributed wireless sensing platforms.Their cutting-edge technology integrates modular sensor hardware, ruggedized computing systems, and wireless mesh networking to empower organizations to effectively monitor and engage with physical assets in diverse industrial and operational settings.We are seeking a dynamic Lead Mechanical Engineer to spearhead the design and deployment of modular sensor products and compute platforms used in extensive wireless sensing systems. In this pivotal role, you will collaborate across various teams—including product management, electrical engineering, firmware, and manufacturing—to architect and develop mechanical systems that facilitate mesh networking of sensors in challenging real-world environments. Additionally, you will be responsible for designing actuator systems that seamlessly integrate within these sensing networks.

Waymo is at the forefront of autonomous driving technology, dedicated to becoming the most trusted driver globally. Originating from the Google Self-Driving Car Project in 2009, our primary goal has been to develop the Waymo Driver—The World’s Most Experienced Driver™. Our innovations aim to enhance mobility access while saving countless lives lost to traffic accidents. The Waymo Driver powers our fully autonomous ride-hail services and is adaptable across various vehicle platforms and product applications. Having completed over ten million rider-only trips, our technology has autonomously navigated over 100 million miles on public roads and executed tens of billions of miles in simulations across more than 15 U.S. states.Your Role:Lead the technical strategy for the Simulator’s issue response lifecycle, encompassing automated detection, root cause analysis, and the deployment of both temporary and permanent software solutions to prevent future regressions.Direct complex, cross-functional projects to enhance automated issue detection by integrating new data sources and signals, thus reducing the time from an in-field event to mitigation deployment.Work closely with Data Science, Systems Engineering, and operations teams to improve technical processes and tools, accelerating the deployment and validation of solutions for identified issues.Mentor mid-level and junior engineers on sophisticated technical challenges, best practices in system architecture, and high-quality software development, serving as a technical force multiplier.

Orchard Robotics is an innovative Series A startup supported by leading venture capital firms such as Quiet Capital, Shine Capital, and General Catalyst. Our mission is to revolutionize agriculture in America by developing AI-driven farming solutions that enhance the productivity of our nation's farms. With over $25 million raised, we are committed to helping farmers achieve greater profitability and sustainability.Our Vision:We harness advanced data collection techniques to deliver critical insights to farmers, enabling them to understand the health and yield of their crops across vast orchards and fields. Our proprietary camera systems capture detailed images of every fruit, and this information is processed through our cloud platform, FruitScope, designed to aid farmers in managing their crops with unparalleled precision.Farmers nationwide rely on our cutting-edge software to analyze their data, make informed decisions, and oversee their agricultural operations seamlessly. Our technology is currently implemented in some of the largest agricultural enterprises in the country.Your Role:As a Forward Deployed Robotics Engineer at Orchard, you will apply your expertise in robotics to real-world agricultural settings. Your responsibilities will include deploying, developing, and enhancing our AI-powered camera systems in various farming environments.You can expect to spend approximately 50% of your time traveling to picturesque farms—including apple orchards, vineyards, nut farms, and strawberry fields—across California, Washington, and occasionally beyond. You will collaborate closely with farmers, our sales team, and engineers to troubleshoot issues and refine our technology directly in the field. The other 50% of your work will be remote, engaging with our core engineering team from your home office.This role is ideal for those who are passionate about both technology and the natural world, are self-motivated, and enjoy direct customer interaction.

About UsAt Imprint, we are revolutionizing the landscape of co-branded credit cards and financial products, making them smarter, more rewarding, and fundamentally brand-centric. We collaborate with esteemed brands like Crate & Barrel, Rakuten, Booking.com, H-E-B, Fetch, and Brooks Brothers to create innovative credit programs that enhance customer loyalty, unlock savings, and stimulate growth. Our sophisticated platform integrates cutting-edge payments infrastructure, intelligent underwriting, and a seamless user experience, enabling brands to offer impactful financial products without the need to become a bank.With co-branded cards accounting for over $300 billion in annual spending in the U.S., the majority are still managed by traditional banks. Imprint stands as the modern solution: agile, technology-driven, and tailored for today’s consumers. Supported by industry leaders like Kleiner Perkins, Thrive Capital, and Khosla Ventures, we are assembling a top-tier team to redefine payment methods and empower brand growth. If you're eager to work at a fast pace, tackle complex challenges, and make a significant impact, we want to hear from you.Discover more about us on Imprint's Technology Blog.Your RoleDesign and spearhead the development of secure, reliable, and scalable backend systemsProvide technical leadership and mentorship across diverse teams and projectsSet and advocate for coding standards, architectural principles, and technical vision within the engineering organizationCollaborate closely with product, design, and engineering leadership to align technical strategy with business objectivesDrive the continuous enhancement of system performance, scalability, and reliability to accommodate rapid growth and evolving business needsLead complex, high-impact projects from inception through deployment and ongoing optimizationEnhance developer experience through advanced tooling, comprehensive observability frameworks, and improvements in platform reliabilityMentor and nurture engineers through code reviews, design discussions, and technical guidanceContribute to the technical roadmap and identify innovative opportunities

About Our TeamJoin our innovative Applied AI team at OpenAI, where we responsibly deploy cutting-edge technology for global impact. We are the creators behind transformative products like ChatGPT, Plugins, DALL·E, and the APIs for GPT-4, GPT-3, embeddings, and fine-tuning. Our team also manages large-scale inference infrastructure, with exciting developments on the horizon.We are dedicated to learning from real-world deployments to maximize AI benefits while ensuring its responsible use. Prioritizing safety over unchecked growth, we directly engage with end-users through ChatGPT and empower developers via our APIs, enabling unprecedented product features.About the PositionAs a pivotal member of our Engineering Acceleration team, you will design, build, and maintain the essential systems that drive the development of ChatGPT and our APIs. This growing team offers you the opportunity to shape the strategy and vision that enhances developer productivity.Key Responsibilities:Lead the creation and implementation of tools and processes that boost engineering efficiency, minimize manual tasks, and enhance output quality.Leverage our advanced AI tools to redefine productivity standards within our engineering teams.Collaborate with internal teams to identify their workflows, challenges, and requirements, ensuring our systems effectively address their needs.Deliver innovative features and research capabilities in partnership with product engineers to establish the necessary technical groundwork.Advise engineering teams on best practices for building observable and scalable systems.Maintain responsibility for the reliability of the systems we develop, including participating in an on-call rotation for critical incident response.Ideal Candidate Profile:5+ years of engineering experience, with at least 3 years focused on developing infrastructure tools for developers.Empathetic understanding of the tools and processes that hinder engineering teams, contributing to inefficiencies or burnout.A relentless passion for learning and innovating in a fast-paced environment.

About Our TeamThe Marketing Innovation team at OpenAI is a cutting-edge product engineering group nestled within our expansive Demand Generation and Marketing organization. Our focus is on developing sophisticated, AI-driven systems that enhance revenue generation, pipeline development, and marketing efficiency.We are tasked with scaling autonomous systems that serve both customers and internal stakeholders, operating at an unprecedented scale. Our goal is to create innovative, customer-facing solutions that engage prospects, drive revenue, and redefine the future of marketing and revenue operations in an AI-centric landscape.Our expertise lies in tackling challenges that surpass the capabilities of conventional low-code tools and basic workflow automation. When the need arises for a robust product experience, in-depth system integration, and unwavering standards of precision, safety, and reliability, the Marketing Innovation team delivers.About the RoleWe are seeking talented product-oriented software engineers to join our dynamic Marketing Innovation team.As a Product Engineer, you will play a pivotal role in developing and managing autonomous, customer-facing systems that directly interact with enterprise clients, prospects, and critical revenue workflows. You will collaborate closely with leaders in revenue scaling, demand generation, and marketing to understand their objectives, translating those needs into high-quality, production-ready systems.Your ability to rapidly transition from vague problem descriptions to fully operational software will be key. We value impact over output: your success will be measured by revenue growth, enterprise pipeline enhancement, and marketing efficiency.This position is perfect for engineers who thrive on taking ownership of tangible systems, enjoy building pioneering products from the ground up, and are eager to establish new frontiers in AI-driven products and workflows.Key Responsibilities:Design and develop autonomous and semi-autonomous systems that enhance revenue generation, pipeline development, and marketing effectiveness.Oversee the complete product lifecycle, from initial prototypes to robust production systems with thorough monitoring and evaluations.Engage with the entire technology stack, including APIs, orchestration, data flows, user interfaces, and deployment processes.Collaborate with marketing, demand generation, and enterprise sales teams to establish success metrics and functional requirements.Utilize OpenAI's models and tools creatively, making informed decisions regarding models, platforms, and architectures.Continuously iterate based on user feedback and performance metrics to enhance system functionality.

About Our TeamJoin the dynamic Software Engineering team at OpenAI, where we are dedicated to crafting scalable, high-performance, and secure backend systems that drive our innovative consumer products. Our team collaborates closely with product managers, hardware engineers, and full-stack developers to ensure that our infrastructure supports rapid development while laying a solid groundwork for future growth.About the OpportunityAs a Senior Backend Engineer, you will play a pivotal role in designing and developing services, APIs, and infrastructure that adapt to our evolving product landscape. Your extensive knowledge of backend systems will enable you to maintain a comprehensive perspective—from hardware setups to cloud environments—allowing you to make informed technical decisions that benefit both the product and the team.We seek engineers who excel in fast-paced, collaborative settings and are passionate about creating resilient systems that can scale effectively.This position is located in San Francisco, CA. We operate on a hybrid work model, allowing four days in the office each week, and provide relocation assistance for new hires.Key ResponsibilitiesDesign, build, and maintain robust backend systems that prioritize high performance and security.Develop APIs and data models that align with our evolving product requirements.Balance immediate development needs with the long-term goals of maintainability and scalability.Work collaboratively with cross-functional teams to deliver seamless, integrated solutions.Ideal Candidate ProfilePossess 7+ years of professional experience in software engineering, with a focus on backend systems.Demonstrate a successful history of building and scaling systems from initial stages to large-scale production.Be proficient in Python and Go, with familiarity in various server-side technologies.Have a strong understanding of system design principles, performance enhancement strategies, and security best practices.Exhibit the ability to evaluate full-stack trade-offs, considering both hardware and cloud infrastructure.(Preferred) Experience with distributed systems and cloud architecture.(Preferred) Background in instrumentation, analytics, and performance optimization.(Preferred) Familiarity with hardware-cloud integration or applied AI services.

About the TeamAt OpenAI, our Applications Engineering organization is at the forefront of transforming groundbreaking research into user-friendly products that reach millions globally. The Applied Foundations team is pivotal, managing the essential product and platform layers that enable seamless user experiences—from identity and access management to safety, payments, and commerce across all our applications. Our diverse teams collaborate across product engineering, infrastructure, and safety, ensuring that we deliver technology that is not only reliable but also secure and trusted on a global scale.About the RoleAs a Senior Android Engineer on the Applied Foundations team, you will play a critical role in developing the core mobile experiences that facilitate user sign-up, account management, family features, service payments, and secure interactions with OpenAI’s suite of products. This position emphasizes the creation of high-quality products and reusable Android foundations that empower product teams across various OpenAI apps to expedite their delivery while adhering to the highest standards of security, reliability, and user trust. You will manage intricate client-side systems encompassing UI, networking, local state, payment integrations, and Apple platform integrations, collaborating closely with backend, product, and safety partners to architect a robust mobile ecosystem for OpenAI on a global scale.You may be an ideal candidate if you:Possess 4+ years of professional software engineering experience.Have a strong portfolio demonstrating high-quality Android applications in production.Are proficient in Kotlin (and/or Java) and are well-versed in Android development tools and architecture components.Prioritize performance, security, and user experience in your mobile development process.Enjoy cross-functional collaboration to bring innovative product ideas to fruition.Are passionate about enhancing performance, security, and overall user experience.

Join DoorDash Labs, a pioneering team dedicated to innovating the future of last-mile logistics through cutting-edge robotics and automation. As a Robotics Software Engineer on our Drone Delivery team, you will play a vital role in transforming delivery experiences for millions. This position invites you to harness your expertise in UAV technology to develop and implement sophisticated systems that operate in real-world environments. Collaborate with a dynamic team to push the limits of innovation and bring advanced aerial delivery solutions to life.

About the RoleAs a Software Engineer specializing in Robotics Controls, you will take charge of the software that drives our robotic systems. Your role will involve close collaboration with machine learning teams to transform intended actions into smooth, efficient, and safe movements across various robotic embodiments. You will work alongside hardware engineers and partners to ensure optimal performance of systems, dynamics, and components.Key Responsibilities:Develop, implement, and rigorously test the complete real-time control system, ranging from low-level firmware to specifications for each robotic embodiment.Manage various robotic embodiments, from standard industrial collaborative robot arms to custom-designed hardware.Ideal Candidate Profile:Extensive knowledge in rigid body kinematics and robotic control systems.Proven experience in deploying robots in production environments with high reliability standards.Proficiency in high-performance, production-ready programming using Python and C++.Familiarity with kinematics and simulation libraries.Experience with robotic middleware frameworks such as ROS/ROS2/ZCM.

At Lassie, we are revolutionizing the healthcare industry with our AI-driven solutions designed for medical practices.With over a million health practices spending more than $100 billion annually on administrative staff, the demand for efficient solutions has never been greater. The ongoing effects of COVID-19 have left many offices understaffed, leading to frustrated patients dealing with unanswered calls and confusing bills.We envision a future where AI seamlessly manages the operations of medical offices, handling administrative tasks and serving as the interface for patient interactions.Founded by Steijn Pelle, who propelled Robinhood and Coinbase to substantial revenue milestones, and Frédéric Renken, a former engineer and product pioneer at Superhuman, we are infusing consumer product expertise into healthcare and transforming the way doctors and patients engage.About the RoleWe are seeking a design-oriented Senior Frontend Software Engineer to develop a robust control plane for our powerful AI agents that manage billing and medical records. Your work will impact real patients and practices, as you create interfaces that inspire trust and ease of use.Emphasizing a consumer-friendly approach to healthcare software, we prioritize elegance and meticulous attention to detail. Your contributions will encompass various aspects including onboarding, human-in-the-loop review, and tools that empower practice owners to gain insights into their operations.You Are a Great Fit If You…Pursue excellence and are willing to refine your work until it achieves greatnessTake pride in crafting software that is fast and intuitiveSeek to maximize your impact through automation and effective processesPossess strong foundations in JavaScript and browser APIsShare our belief that healthcare software should be as delightful as consumer applicationsSome of Our Notable AchievementsDeveloped a synchronization engine utilizing encrypted SQLite in the browser, facilitating 100ms response times for healthcare payments and patient ledgersImplemented systems that significantly reduce the paperwork burden by thousands of hours each month

Join Our Team as a Senior Applications EngineerLocation: San Francisco, CA (full-time, in-person)Company OverviewAt Cosmic Robotics, we are dedicated to transforming the construction of essential infrastructure on Earth while innovating technologies that will empower humanity to construct beyond our planet. Our flagship technology, Cosmic-1, revolutionizes solar panel installation, achieving speeds ten times faster than current methodologies, aiding our transition to a sustainable energy future and setting the stage for autonomous construction.The RoleAs a Senior Applications Engineer, you will serve as the vital link between our state-of-the-art robotics and our clientele. You will oversee the complete deployment cycle and ensure the long-term success of our robots in real-world applications. Collaborating closely with customers, you will be instrumental in developing, deploying, and optimizing the world’s leading construction robots. Your role is essential in enhancing our platform through customer-driven feature development and fostering widespread adoption. As a pivotal member of our team, you will contribute to defining the future of autonomous construction.This position offers a unique chance to:Tackle significant challenges that will shape the future of infrastructure and energy.Collaborate with an exceptional team hailing from NASA, SpaceX, Google, Built Robotics, and other industry leaders.Accelerate your personal growth and leadership capabilities within a rapidly expanding company.ResponsibilitiesManage the entire lifecycle of robot deployment at customer locations, encompassing initial setup, commissioning, field validation, and ongoing maintenance.Act as a technical partner to customers, converting their operational requirements into actionable features for our robots and platform.Design, integrate, and launch new features tailored to meet specific customer needs.Diagnose and resolve field issues while ensuring maximum robot uptime.Establish project milestones, strategize roadmaps, and meet ambitious timelines for deployments and feature enhancements.Recruit, nurture, and cultivate a world-class engineering team.

At Sciforium, we are at the forefront of AI infrastructure, innovating next-generation multimodal AI models and a proprietary high-efficiency serving platform. With substantial funding and direct collaboration from AMD, supported by their engineers, our team is rapidly expanding to develop the complete stack that powers cutting-edge AI models and real-time applications.About the RoleWe are on the lookout for a talented GPU Kernel Engineer who is eager to explore and maximize performance on modern accelerators. In this role, you will be responsible for designing and optimizing custom GPU kernels that drive our advanced large-scale AI systems. You will navigate the hardware-software stack, engaging in low-level kernel development and integrating optimized operations into high-level machine learning frameworks for large-scale training and inference.This position is perfect for someone who excels at the intersection of GPU programming, systems engineering, and state-of-the-art AI workloads, and aims to contribute significantly to the efficiency and scalability of our machine learning platform.Key ResponsibilitiesDevelop, implement, and enhance custom GPU kernels utilizing C++, PTX, CUDA, ROCm, Triton, and/or JAX Pallas.Profile and fine-tune the end-to-end performance of machine learning operations, particularly for large-scale LLM training and inference.Integrate low-level GPU kernels into frameworks such as PyTorch, JAX, and our proprietary internal runtimes.Create performance models, pinpoint bottlenecks, and deliver kernel-level enhancements that significantly boost AI workloads.Collaborate with machine learning researchers, distributed systems engineers, and model-serving teams to optimize computational performance across the entire stack.Engage closely with hardware vendors (NVIDIA/AMD) and stay updated on the latest GPU architecture and compiler/toolchain advancements.Contribute to the development of tools, documentation, benchmarking suites, and testing frameworks ensuring correctness and performance reproducibility.Must-Haves5+ years of industry or research experience in GPU kernel development or high-performance computing.Bachelor’s, Master’s, or PhD in Computer Science, Computer Engineering, Electrical Engineering, Applied Mathematics, or a related discipline.Strong programming proficiency in C++, Python, and familiarity with machine learning frameworks.

Join a transformative healthcare technology company that is revolutionizing care delivery across America. Our client focuses on addressing one of the most significant coordination challenges in healthcare by developing an AI-driven platform designed to enhance caregiving workflows, boost patient outcomes, and alleviate administrative burdens for both providers and payers. Their groundbreaking solutions span across home care, senior living, hospice, and disability services, crafting a seamlessly connected and efficient distributed healthcare system.In an industry where caregiving represents the largest job market in the U.S., the current system still relies on outdated methods like sticky notes and spreadsheets, leading to delays and inefficiencies. Families often wait weeks for assistance, patients miss essential visits, and caregiver turnover is alarmingly high at 65% annually.They are constructing the AI coordination layer for care—developing intelligent agents that navigate complexities, support caregivers, and transform disjointed workflows into dependable systems. Their initial focus on home care is set to expand into senior living, hospice, disability, and more, ultimately serving as the connective framework for a decentralized healthcare network.This platform offers payers real-time visibility across fragmented provider networks, ensuring members receive timely and appropriate care while minimizing costs and administrative strain.This isn’t merely about creating better software; it’s about building a new infrastructure that has never been possible until now. They are searching for passionate builders dedicated to tackling one of the world's most complex and impactful coordination challenges.As a Full-Stack Software Engineer, you will play a pivotal role in shaping the future of healthcare technology. You will be at the forefront of ambitious product initiatives, taking ownership of the development of essential features such as EHR integrations, intelligent workflows, and advanced voice AI infrastructure. Your contributions will directly drive revenue growth by facilitating customer onboarding and expanding contract opportunities with innovative use cases.We seek a proactive, high-ownership individual who is adept at building exceptional products, thrives in a fast-paced environment, and is eager to engage at the intersection of healthcare and AI.

ABOUT SPHEREAt Sphere, we believe that transformative advancements in trade infrastructure drive market expansion and reduced transaction costs. Just as containerization revolutionized goods transport and SWIFT transformed money transfers, we are tackling one of the last frontiers: compliance. With over 190 sovereign jurisdictions constantly evolving and interacting, navigating trade rules is a complex challenge.Our cutting-edge AI system, TRAM, intelligently processes global trade law, expertly resolves jurisdictional conflicts, and delivers compliance determinations that outperform human experts. We manage the entire compliance lifecycle—calculation, registration, filing, and remittance—with unmatched speed and reliability.Backed by a16z and Y Combinator. With a $21M Series A funding round and over 30% month-over-month growth, our esteemed clientele includes ElevenLabs, Replit, Deel, Runway, and Lovable.A small, agile team with a global impact. Each team member possesses ownership over a domain that would represent an entire team at a larger company. We operate out of our San Francisco HQ, requiring in-office presence five days a week.The challenge is continuously evolving. As we expand into areas such as input tax, withholding, e-invoicing, and tariffs, the complexity multiplies. Today, we handle tens of millions of transactions, with billions on the horizon.THE ROLECustomer experience (CX) is pivotal at Sphere. Trust is paramount when it comes to managing payments and tax obligations for our clients. Every aspect of the user experience—from modals and buttons to exports—must be executed flawlessly. Would you trust a payment platform filled with bugs and inconsistencies?We are seeking a passionate founding product engineer to enhance our CX, elevate it to new heights, and contribute to the development of innovative features and products aligned with our roadmap.In this role, you will work closely with customers, collaborate with our design and engineering teams, and engage directly with our CEO and Founder to actualize Sphere’s vision of creating a unified global market.WHAT YOU'LL DOWithin your first few weeks:Engage with numerous customers to identify their core pain points and prioritize features that address their needs.Collaborate intensively with design teams to bring those features to fruition.Consistently execute and launch features from start to finish on a daily basis.Participate in customer support as needed to deepen your understanding of our users and their challenges.

Role Overview:Take ownership of the complete lifecycle for memory features—from initial research to final production. You will enhance models for extraction, updates, consolidation/forgetting, and conflict resolution. Transform customer challenges into actionable research hypotheses, implement and evaluate innovative ideas from academic papers, and collaborate with Engineering to achieve state-of-the-art latency, reliability, and cost. Additionally, you will develop large-scale evaluation strategies (including offline metrics and online A/B testing) and integrate real-world feedback to continuously elevate quality.Your Responsibilities:Refine and train models focused on memory extraction, updates, consolidation/forgetting, and conflict resolution; iterate based on data analysis and results.Engage with research: swiftly prototype concepts from papers, benchmark against standards, and operationalize successful approaches.Establish large-scale evaluations: create automated relevance, accuracy, and consistency metrics, gold sets, online A/B tests, and user-friendly dashboards.Collaborate with customers to identify pain points, convert them into research hypotheses, and validate solutions through field trials.Work with Engineering for deployment: design APIs and data contracts, plan safe rollouts, and maintain state-of-the-art latency, reliability, and cost across operations.Minimum Qualifications:Proven experience in RAG or information retrieval (retrieval, ranking, and query understanding) for real-world applications.Model training and fine-tuning expertise (LLMs/encoders) with a solid background in experimental design and iterative processes.Proficient in Python, with extensive experience in PyTorch and familiarity with vLLM and modern model serving frameworks.Experience in evaluation of complex vision-and-language tasks (gold sets, offline metrics, online testing).Ability to orchestrate data pipelines for running models in production with low-latency service-level agreements (both batch and streaming).Exceptional communication skills with stakeholders (engineering, product, go-to-market teams, and clients).Preferred Qualifications:Publications in reputable venues such as NeurIPS, ICML, or ACL.