Senior Full Stack Software Engineer

About HappyRobotHappyRobot is pioneering the AI-native operating system tailored for the real economy, seamlessly bridging the gap between intelligence and actionable outcomes. By harnessing real-time data, specialized AI agents, and a central orchestrating intelligence, we empower enterprises to manage intricate, mission-critical operations with unparalleled autonomy.Our AI OS accumulates knowledge, optimizes processes across various levels, and adapts over time. We are initially focusing on supply chain and large-scale industrial operations, where resilience, speed, and ongoing enhancement are paramount—allowing human talent to concentrate on strategic, creative, and other high-value endeavors.Discover our vision further in our Manifesto. HappyRobot has successfully raised $62 million to date, including a recent $44 million in Series B funding in September 2025. Our esteemed investors include Y Combinator (YC), Andreessen Horowitz (a16z), and Base10—partners committed to our mission of transforming enterprise operations. We are channeling this investment into assembling a top-tier team: individuals driven by relentless ambition, adept problem-solving skills, and a passion for pushing boundaries in a dynamic, high-energy environment. If this resonates with you, we invite you to be part of HappyRobot.About The RoleAt HappyRobot, our Full Stack Engineers take ownership of significant components of our product and infrastructure, delivering from end to end.We seek innovators who thrive in uncertain environments, have a deep appreciation for their craft, and desire genuine ownership of their creations.

About UsAt Valdera, we empower manufacturers to turn their visions into reality by revolutionizing the way they source materials. Our innovative platform simplifies the process of finding top-quality materials and suppliers, enabling manufacturers to create exceptional products at scale and distribute them globally.As a rapidly expanding team, we have established successful partnerships with Fortune 500 industrial manufacturers, beauty brands, and chemical companies. We seek driven and talented individuals who excel in high-performance settings and are eager to advance their careers swiftly.Our culture encourages top talent to tackle significant challenges, collaborate with industry leaders, and witness the tangible impact of their contributions. If you are seeking a dynamic environment where your ideas can foster change, Valdera is the perfect place for you.Join us in shaping the future of manufacturing.

Join prosper as a Senior Full Stack Software Engineer, where your expertise will drive innovation and enhance our technology solutions. In this role, you will collaborate with cross-functional teams to develop scalable applications, ensuring high-quality code and performance. Your contributions will help shape the future of our platform and improve user experiences.

About PrimerPrimer is an innovative network of K–8 schools dedicated to revitalizing the fundamental principles of American education. Drawing inspiration from the original teaching primers that cultivated generations of readers, thinkers, and builders, our schools focus on proven methods while preparing for future challenges. We foster close-knit learning environments, empower skilled educators, and maintain a culture that respects children as both learners and leaders.For over 200 years, primers have shaped the American educational landscape. Now, Primer is preparing children for the next chapter.The software we develop underpins our Microschools, facilitating operations from day one. It assists teachers in sourcing real estate, recruiting students, and delivering genuinely personalized education. Our platform provides valuable insights to parents, supports virtual teachers in offering exceptional experiences, and streamlines our back-office operations. We have a broad scope of work ahead and a commitment to making a significant impact.We are assembling a small, talented team of hands-on engineers to play a pivotal role in the evolution of Primer.Role OverviewWe are in search of a skilled Full Stack Engineer to join our dynamic team. In this capacity, you will help reimagine the school experience through modern technology. You will create features that teachers, students, and families depend on daily while addressing tangible challenges in education.This position is based in San Francisco and requires in-office attendance five days a week.ResponsibilitiesTechnical Stack: Engage with technologies including TypeScript, NodeJS, GraphQL, Prisma, Postgres, NextJS, React, and Relay.Collaborative Environment: Collaborate daily with team members across engineering, product, design, and our academic program.Ownership and Growth: Take complete ownership of projects and enhance your skill set. You will have opportunities to lead initiatives that shape the product, with ample room for professional development.Engineering Culture: Contribute significantly to establishing our engineering culture as we expand our team.Deliver Quality Products: We uphold high standards for quality, so be prepared to work diligently to achieve excellence.QualificationsPassion for Education: You possess a genuine passion for transforming the U.S. education system. While this work is challenging, successful outcomes will prove to be the most rewarding of your career.

Join our dynamic team at Braze as a Senior Full-Stack Software Engineer! In this pivotal role, you will collaborate with cross-functional teams to design, develop, and implement innovative software solutions. You will leverage your expertise in both front-end and back-end technologies to create seamless user experiences and optimize system performance.

Mithril is on the lookout for exceptional candidates at the Senior to Principal level. The exact level will be determined based on your experience and proven expertise. We value individuals who offer deep technical knowledge, strategic insights, and a history of impactful contributions. Our roles are tailored to fit each candidate’s unique strengths and career aspirations. About Mithril At Mithril, we are revolutionizing how AI companies harness compute power. Our mission is to orchestrate global compute capacity, making it more accessible and optimized for AI workloads. We are constructing a novel public cloud specifically designed for AI, where accessing high-performance compute is as straightforward and reliable as flipping a switch. Originating from a Stanford PhD lab just over a year ago, Mithril has already attracted backing from premier investors, including Sequoia, Lightspeed, Jeff Dean, and Eric Schmidt, among others. With $80 million in funding, we are securing customers and generating revenue. The current machine learning infrastructure is overly complex, forcing engineers to make hard choices about hardware when they should focus on solving major problems and driving innovation. Our Omnicloud Platform addresses this issue by abstracting hardware management and providing seamless access to computational resources, enabling engineers to concentrate on what truly matters—developing transformative AI solutions. We are not only making compute accessible; we are also making it flexible, scalable, and tailored to meet the unique demands of AI. Our infrastructure marketplace provides state-of-the-art hardware without the usual friction, allowing companies to innovate faster and more efficiently. Working at Mithril As a Full Stack Engineer at Mithril, you will play a crucial role in developing the applications and systems that will shape the future of AI. Your responsibilities will include scaling our platform and ensuring a seamless user experience supported by a robust and efficient infrastructure. In a landscape where AI workloads are increasingly complex, crafting reliable and high-performance software is foundational to our mission. The Omnicloud Platform supports cutting-edge AI workloads, managing vast amounts of data while providing a user-friendly interface for developers and researchers. Full Stack Engineers at Mithril design and implement solutions across the entire stack—from creating intuitive front-end interfaces to architecting scalable backend systems. We expect every engineer to approach problems holistically, balancing performance, scalability, and simplicity, while maintaining a strong focus on user experience.

Vivodyne is building advanced tools to accelerate drug discovery and development by working with large-scale, lab-grown human organ tissues. The company combines biology, robotics, and AI to generate multi-omic data from human tissues, aiming to improve the safety and effectiveness of new therapeutics. Vivodyne partners with major pharmaceutical companies and is backed by leading venture funds. Role overview The Senior Full Stack Software Engineer will join the team in San Francisco (Brisbane), CA. This position collaborates closely with Product to build sophisticated, high-performance web applications that support scientific workflows. The stack centers on React and TypeScript for the frontend, FastAPI for backend services, and Postgres for data management. Work includes designing and developing complex, stateful user interfaces, implementing backend features, and delivering end-to-end solutions. The engineer will focus on creating rich, data-driven interfaces that help scientists design experiments and monitor results. Strong interaction design and state management skills are important. Experience as an "AI native" is valued, as the team uses large language models to speed up prototyping and deliver results quickly. This role directly supports Vivodyne's biotech platform for drug discovery and testing, enabling scientists to work with unique datasets and robotic systems. The applications built will be used in partnership with top pharmaceutical companies. Key technologies React (frontend) TypeScript (frontend) FastAPI (backend) Postgres (database) Location San Francisco (Brisbane), California

Join Arena IntelligenceAt Arena Intelligence, we are pioneers in assessing the real-world performance of AI models. Founded by esteemed researchers from UC Berkeley's SkyLab, our goal is to enhance and measure the capabilities of AI technologies for practical applications.Each month, millions leverage Arena Intelligence to understand frontier system dynamics, using our community's insights to foster transparent, rigorous, and human-centric evaluations. Leading organizations and AI laboratories depend on our assessments to gauge real-world reliability, alignment, and implications. Our leaderboards set the benchmark for AI performance, earning trust from industry leaders and influencing global discussions on model reliability and advancements.Our team comprises researchers, engineers, scholars, and innovators from renowned institutions such as UC Berkeley, Google, Stanford, DeepMind, and Discord. We prioritize truth-seeking, agility, and craftsmanship, valuing curiosity and impactful contributions over hierarchy. We're fostering a workplace where thoughtful and diverse individuals can excel. Each team member is a domain expert, contributing to an environment rich in excellence, energy, and focus.Role OverviewWe are looking for a Senior Full-Stack Product Engineer to spearhead the technical design and development of AI-focused products within our platform. This role involves taking ownership of features from inception to deployment—encompassing the proposal of technical solutions, implementation of core product workflows, and analysis of new functionalities' impacts. Ideal candidates should possess substantial experience in constructing reliable business logic at scale and be enthusiastic about influencing user interaction with state-of-the-art AI models.

Why Join Brex?At Brex, we are redefining how companies manage their spending through our AI-driven spend platform. Our integrated solutions, including corporate cards, banking, and global payment systems, empower businesses—ranging from startups to large enterprises like DoorDash, Flexport, and Compass—to effectively control their expenses and enhance operational efficiency.Joining Brex means being part of an innovative environment where you can challenge yourself, disrupt conventional thinking, and collaborate with some of the industry's brightest talents. We are dedicated to fostering a diverse team and inclusive culture, believing that your potential should be limited only by your dreams. We provide you with the tools, resources, and support necessary for your professional growth.Engineering at BrexOur engineering division focuses on creating scalable systems with purpose and speed. Our collaborative teams across Software, Data, Security, and IT work with high autonomy, tackling complex technical challenges and striving for excellence in every aspect, from architecture to deployment. Here, engineering is not just a job—it's a craft that cultivates leadership among builders.Your RoleAs a Senior Full Stack Software Engineer on the Task Workflows Platform team, you will develop and enhance the foundational infrastructure that supports crucial user experiences at Brex. Your responsibilities will include working on a diverse range of platforms, such as our multi-channel notifications engine, collaborative commenting system, and dynamic workflow rule builder. You will be instrumental in transitioning our task orchestration framework from a centralized model to more specialized solutions tailored for specific product domains.You will confront intricate full-stack challenges, from designing scalable backend APIs and automation rule engines to developing intuitive frontend user experiences for domain-specific task interfaces and workflow builders. Beyond core platform duties, your contributions will significantly influence broader product experiences, including utilizing AI to enhance user workflows and supporting the ongoing evolution of our productivity tools across web and mobile platforms.Work EnvironmentThis position is located in our San Francisco office. We adopt a hybrid work model that combines the dynamic interactions of in-office work with the flexibility of remote arrangements. Currently, we require a minimum of three coordinated days in the office each week.

Join Our Team at Owner.comAt Owner.com, we are revolutionizing the way local restaurants grow through our innovative AI growth system, designed specifically for their needs.Our AI enhances SEO, marketing, and online ordering systems to maximize first-party orders, empowering small business owners with a user-friendly platform managed by experts. We provide a suite of tools that levels the playing field against larger chains.Our VisionWe aim to enable independent restaurants to thrive online, and our vision extends beyond them. Many local businesses face similar challenges, and we aspire to provide solutions that can assist them as well. Our goal is to develop technology that tens of millions of local business owners can leverage for success in the digital landscape.Our AchievementsSince our inception in 2020, we have generated substantial revenue and facilitated over half a billion dollars in online orders. Over 20,000 restaurant owners have benefited from our services, saving nearly $200 million in fees.Our TeamComprising top talent from leading companies in the SMB software sector, our team is poised for rapid growth as we expand further in 2026.Work EnvironmentAs a remote-first company headquartered in San Francisco with a sales hub in Toronto, we foster a flexible work culture. Most of our team members are distributed globally. For specific roles, we encourage in-person collaboration, so please consult with your recruiter regarding location details.

Astranis is at the forefront of space innovation, crafting advanced satellites for high orbits that extend humanity's capabilities within our solar system. Our satellites are designed to deliver dedicated and secure networks to highly sophisticated clients globally, including large enterprises, sovereign governments, and the US military. With five satellites currently in orbit and more on the horizon, we are addressing a backlog exceeding $1 billion in commercial contracts.We are recognized as the leading satellite communications partner for clients demanding exceptional uptime, data security, network visibility, and tailored solutions. Having raised over $750 million from top-tier investors such as Andreessen Horowitz, Blackrock, and Fidelity, our team comprises 450 skilled engineers and entrepreneurs. Our headquarters, spanning 153,000 sq. ft., is located in Northern California, USA, where we design, build, and operate our satellites.Senior Full Stack Engineer - Network SoftwareAs a Senior Full Stack Engineer specializing in Network Software, you will play a pivotal role in designing and implementing the software that powers our satellite and ground networks. The tools you develop will be essential for our customers to monitor satellite performance and for our internal teams to plan, design, and optimize our satellite networks and their capabilities.This position will significantly contribute to both commercial projects and US Government initiatives.RoleLead the architecture, development, and implementation of software for satellite and network management.Oversee backend and UI development for internal tools related to test infrastructure, mission control, and business operations.Create user-friendly web-based interfaces for telemetry dashboards, test orchestration, command execution, and workflow monitoring.Automate manual processes to enhance operational efficiency across engineering, network, and satellite operations.Collaborate closely with mission operations teams to create software that aids in the design, construction, and management of Satellites and Networks.Design high-performance, reliable, mission-critical software that transmits commands to space.Engage with multidisciplinary teams to define software requirements, architectures, and designs.RequirementsBachelor’s degree in Computer Science or a related technical field.7+ years of experience as a full stack developer in industry.Proficient in system-level architecture, software design, and implementation.

Join Cloudflare as a Senior Full Stack Software Engineer and be at the forefront of our mission to help build a better Internet. We are looking for talented engineers who thrive in a collaborative environment and are eager to tackle complex challenges.Your role will involve designing, developing, and optimizing applications across the full stack. You will work closely with cross-functional teams to create innovative solutions that enhance our platform's capabilities.

Join Binti as a Senior Full Stack Software Engineer and play a crucial role in developing innovative software solutions that enhance our mission to streamline the adoption process. You will be responsible for designing, developing, and maintaining our web applications, ensuring optimal performance and user experience.In this position, you will collaborate with cross-functional teams, participate in all phases of the software development lifecycle, and mentor junior developers. If you are passionate about building scalable applications and are eager to solve complex problems, we want to hear from you!

At Sift, we are revolutionizing the construction, testing, and operation of modern machines. Our innovative platform empowers engineers with real-time visibility over high-frequency telemetry, helping to eliminate bottlenecks and facilitating rapid, reliable development.Founded by a team with backgrounds at SpaceX, Google, and Palantir, Sift emerged from the need for robust infrastructure in mission-critical systems, where precision and scalability are paramount. With roots in projects like Dragon, Falcon, Starlink, and Starship, we focus on delivering solutions that address complex engineering challenges.As a pivotal member of our engineering team, you will not only write code but also define architecture, shape product development, and influence a culture dedicated to solving real-world engineering problems. If you are eager to tackle intricate technical challenges and contribute to building foundational systems for complex machines, we would love to hear from you.

At Ripple, we’re pioneering a future where value flows as seamlessly as information. Our innovative crypto solutions for financial institutions, businesses, governments, and developers are transforming the global financial landscape, fostering economic equity and opportunity for individuals worldwide. Join us in creating meaningful impact while advancing your career in a supportive environment with colleagues who are committed to your success. If you’re ready to witness your contributions shape the future and unlock extraordinary career development opportunities, come aboard and help us build tangible value.THE WORK: WHAT YOU’LL DO: WHAT YOU'LL BRING:

About StackAIStackAI is a revolutionary no-code AI workflow platform that enables businesses to construct, implement, and expand AI-driven workflows without requiring extensive machine learning expertise. With a growing user base and increasing enterprise adoption, our goal is to democratize access to large language models (LLMs), empowering every business operator—beyond just developers. Supported by Y Combinator and top-tier investors, we are laying the groundwork for the AI-driven future of work.The RoleAs a Senior Full Stack Engineer, you will be instrumental in defining the product and technical architecture at StackAI. Your responsibilities will span the entire technology stack, from crafting scalable backend systems to creating stunning and user-friendly frontend interfaces, and incorporating advanced AI models into our platform. This role offers significant impact, as you will work closely with the founding team, take charge of essential product features, and shape the engineering culture of a rapidly evolving startup.We seek exceptional 10X engineers—innovative builders who can consistently deliver results in a dynamic environment, remain inquisitive, and excel in diverse roles.ResponsibilitiesIn this role, you will:Build and own the entire platform, from backend services and APIs to frontend interfaces.Create robust, scalable backend systems utilizing Python and FastAPI (or similar), with optimized databases (SQL/NoSQL).Design and maintain high-quality user interfaces using React, Next.js, TypeScript, and Tailwind CSS, ensuring polished, intuitive, and responsive user experiences.Integrate new AI models and features into our products for seamless performance and enhanced value.Manage StackAI’s landing and product pages to establish benchmarks for clarity, design, and quality.Collaborate across the stack to connect backend services with frontend applications seamlessly.Engage with design, product, and customers to refine product direction and prioritize user needs.Stay at the forefront of full-stack technologies, promoting best practices and innovative solutions.Assist with customer support as needed; every team member contributes to user satisfaction.

Join Condor Software as a Full-Stack Platform EngineerAt Condor, we are revolutionizing the financial infrastructure that supports clinical development. With billions invested annually in discovering and developing new therapies, we strive to connect clinical operations and finance into a cohesive system. By integrating real-time financial intelligence, we empower R&D and finance leaders with the tools they need to make informed, high-stakes decisions.We are an AI-driven, pharma-native infrastructure provider, scaling industry standards in collaboration with top-tier partners. Our platform facilitates prediction, control, and execution in the most complex R&D environments worldwide.The Importance of Your RoleHaving established ourselves as a trusted partner for enterprise teams, we are now focused on the challenging task of scaling our platform to meet increasing demands. As a rapidly growing company, backed by prominent investors like Felicis and 645 Ventures, this is a unique opportunity to contribute to the foundational infrastructure that will redefine how therapies reach patients.Your ResponsibilitiesAs a Full-Stack Platform Engineer, you will be pivotal in building and scaling the core platform that supports the financial intelligence infrastructure relied upon by leading biopharma companies. This role encompasses critical engineering tasks at the intersection of backend systems, cloud infrastructure, and intelligent automation, with a strong emphasis on reliability and scalability.Your primary focus will be on backend architecture, where you'll design and implement services that drive complex financial and operational workflows. You'll be instrumental in shaping data flow, workflow orchestration, and enabling emerging AI-driven capabilities. This role goes beyond simple integration; you'll be crafting robust primitives that support other teams as our product and customer base expand.Working as a core member of a cross-functional product team, you will closely collaborate with product managers, designers, quality engineers, and data specialists to transition features from concept to production. While backend expertise is crucial, you will also engage across the stack to ensure the platform's capabilities are effectively leveraged.

Join us in our mission to revolutionize the trucking and logistics industry.At AtoB, we are committed to transforming the outdated payments infrastructure that supports this vital sector. Our innovative solutions aim to eliminate fraud, streamline user experiences, and provide transparent fee structures to the hardworking professionals in trucking and logistics.We envision a future where financial transactions are seamless and equitable, enabling our customers to focus on what they do best. Our team is dedicated to creating user-centric products that cater to the unique challenges faced by fleet managers and drivers alike.Our founders bring extensive experience from leading companies like Cruise Automation, Uber, and Google, supported by an accomplished team of engineers from top tech firms. With over $125 million raised from notable investors, including Eric Schmidt and Marc Benioff, we are poised for exceptional growth.Recognized by Forbes as a Next Billion-Dollar Startup and selected as a Global Innovator by the World Economic Forum, we are on a mission to build the future of transportation finance.

Discord serves over 200 million users each month for a multitude of reasons, but one unifying activity stands out: gaming. With over 90% of our community engaging in gaming, they collectively spend an astonishing 1.5 billion hours playing thousands of unique titles on our platform each month. As a pivotal player in the gaming landscape, Discord is dedicated to enhancing the experience of connecting and sharing moments before, during, and after gameplay.We are seeking a talented, innovative, and results-driven Senior Software Engineer to become part of our dynamic Ads team.This team is at the forefront of transforming user interactions on our platform through cutting-edge advertising formats, including Quests. Our mission revolves around crafting extraordinary user experiences while scaling our platform to unprecedented success. These innovative products empower us to generate revenue by creating a mutually beneficial ecosystem for game developers, players, and Discord. Join us in defining the future of digital advertising and marketplace interactions!To dive deeper into Discord Engineering, explore our engineering blog!