Software Engineer, Merchant Tooling

Be a Part of the E-Commerce Revolution with Whatnot!Whatnot stands as the premier live shopping platform in North America and Europe, allowing users to buy, sell, and explore their favorite items like never before. We are transforming the landscape of e-commerce by seamlessly integrating community, shopping, and entertainment into a unique experience tailored for you. As a remote-first organization with teams located across the US, UK, Germany, Ireland, and Poland, we are fueled by innovation and grounded in our core values. Together, we are crafting the next generation of online marketplaces.From trendy fashion and beauty products to cutting-edge electronics and rare collectibles, our live auctions cater to a diverse range of interests.But this is just the beginning! As one of the fastest-growing marketplaces, we are on the lookout for innovative thinkers and problem solvers across all departments. Stay updated with our latest developments through our news and engineering blogs, and embark on this journey with us to empower individuals to transform their passions into successful businesses while fostering community through commerce. Your RoleAs a member of the Inventory team, your mission will be to assist sellers in effectively managing their merchandise on Whatnot, ensuring accurate representation to maximize buyer reach. Our objective is to streamline this process, allowing sellers to focus on what they excel at: engaging with their community and making sales. The Merchant Tooling subteam, dedicated to our largest and most complex sellers, is pivotal in this mission. We are committed to evolving alongside our sellers as they grow their businesses, developing systems that facilitate both external and internal tools to support their scaling needs, including integrations with other e-commerce platforms, WMS, ERPs, and accounting software.In your role, you will design and build large-scale, highly reliable systems that cater to our most demanding customers. Key responsibilities include:Ensuring seamless, bi-directional data synchronization across marketplace, e-commerce, ERP, and additional enterprise systems, focusing on accuracy, consistency, and low-latency data flow.Collaborating closely with cross-functional teams—including Product, Inventory, Operations, and external partners—to identify business needs and translate them into actionable technical solutions.

Embrace the Future of E-Commerce with Whatnot!Whatnot stands as the premier live shopping platform across North America and Europe, allowing users to buy, sell, and discover beloved items. We’re transforming the e-commerce landscape by integrating community, shopping, and entertainment into a personalized experience. Operating as a remote co-located team, we thrive on innovation while staying true to our core values. With our presence extending across the US, UK, Germany, Ireland, and Poland, we are collectively crafting the future of online marketplaces.From fashion, beauty, and electronics to unique collectibles like trading cards, comic books, and even live plants, our live auctions cater to diverse interests.As one of the fastest growing marketplaces, we are in search of bold, innovative problem solvers across various functional domains. Stay updated with the latest from Whatnot on our news and engineering blogs as we empower individuals to transform their passions into thriving businesses and foster community through commerce. Position OverviewThe Inventory team is dedicated to assisting sellers in efficiently managing their merchandise on Whatnot, ensuring accurate representation to reach a wider audience. Our aim is to streamline this process, allowing sellers to focus on what they excel at: engaging with their community and selling. The Merchant Tooling subteam specifically caters to the needs of our largest and most complex sellers. Whatnot is committed to supporting sellers as they evolve their businesses with us, building systems that facilitate both external and internal tooling for scalable needs, including integrations with other e-commerce platforms, WMS, ERPs, and accounting software.As a member of the Merchant Tooling team, you will be responsible for designing and constructing large-scale, highly reliable systems tailored to support our most intricate customers. Your primary focus will include:Implementing seamless, bi-directional data synchronization across marketplace, e-commerce, ERP, and other enterprise systems, ensuring accuracy, consistency, and low-latency data flow.Collaborating closely with cross-functional teams—including Product, Inventory, Operations, and external partners—to comprehend business needs and translate them into effective technical solutions.

Join Whatnot as a Software Engineer specializing in AI Development Tools, where you will be part of a dynamic team dedicated to building innovative solutions that enhance the user experience. You will play a crucial role in designing, developing, and implementing cutting-edge AI tools that streamline processes and improve productivity. If you are passionate about artificial intelligence and eager to make an impact, we want to hear from you!

Join Whatnot as a Software Engineer specializing in AI Development Tools. In this dynamic role, you will contribute to the design and implementation of cutting-edge AI tools that enhance user experience and streamline workflows. Collaborate with a talented team of engineers and data scientists to push the boundaries of technology and deliver innovative solutions.

Riot Games is looking for a Manager, Software Engineering to guide the Tools & Frameworks team within the Developer Connections group. This team creates internal tools and frameworks that help other development teams work more efficiently. What you will do Lead and support engineers building developer productivity tools and frameworks Foster collaboration and encourage sharing of knowledge across the team Promote creative problem-solving and drive technical innovation Oversee engineering projects from initial planning through to delivery Locations Los Angeles, USA Mercer Island, USA Redwood City, USA

At Riot Games, our engineers possess not only deep expertise in their specific technical fields, but they also appreciate the chance to explore a wide array of broader domains. As a Staff Software Engineer in Tools, you will spearhead vital technical projects and exemplify outstanding engineering practices to your fellow engineers. We utilize both cutting-edge and established technologies to craft innovative solutions that tackle high-volume challenges while delivering exceptional value to our players. In this role as a Staff Software Engineer, Tools on a groundbreaking R&D product, you will design and develop the core components of the tools ecosystem for one of Riot's most thrilling upcoming titles. Collaborating closely with designers, artists, producers, and fellow engineers, you will gather requirements and establish a long-term vision for the developer tooling. Your responsibilities will include hands-on involvement in conceptualizing, planning, implementing, and maintaining the tools that enhance content creation workflows and boost developer efficiency. You will engage with state-of-the-art technology and seek innovative solutions that will surprise and delight our players as we bring this new game to life. You will report directly to the Director of Software Engineering within the team.

Join our dynamic team at Xsolla as a Senior Software Engineer specializing in Marketing Tools, where you will leverage your expertise in React Native and web technologies to build innovative solutions that enhance our marketing capabilities.You will collaborate closely with cross-functional teams to design, develop, and optimize high-performance applications that meet our clients' needs. Your role will be pivotal in driving the success of our marketing initiatives through your technical acumen and problem-solving skills.

Join Voyager Technologies, a pioneering company in defense, national security, and space technology, dedicated to delivering innovative and mission-critical solutions. We confront complex challenges to foster human progress, strengthen national security, and safeguard essential assets, striving to achieve technological and operational excellence from the ground to the stars.Be a Part of Shaping Tomorrow: Join Voyager TechnologiesThe future is crafted by those who dare to innovate. At Voyager Technologies, we are creating solutions that protect lives, push boundaries, and prepare for the next era. We seek individuals who are driven to solve problems, innovate, and lead. Our roles require courage and commitment.As part of our team, you will play a vital role in establishing the foundation of humanity's future. Experience a culture where innovation flourishes, curiosity is appreciated, and tangible impact is made. We are a community of doers, thinkers, and creators, united by a shared mission and a pragmatic approach.If you want to apply your skills in a high-stakes environment where the mission transcends individual contributions, forge the future with Voyager.

K2 Space Corporation is at the forefront of aerospace innovation, developing the world's largest and most powerful satellites designed to achieve unprecedented performance across diverse orbits. With significant backing of $450 million from top investors such as Altimeter Capital, Redpoint Ventures, T. Rowe Price, and Lightspeed Venture Partners, in addition to over $500 million in signed contracts with commercial and U.S. government clients, we are set to mass-produce the most advanced satellite platforms ever made for missions ranging from Low Earth Orbit (LEO) to deep space.The advent of heavy-lift launch vehicles is revolutionizing the industry, transitioning us from an era of mass constraints to one of mass abundance. Our K2 satellites are engineered to endure harsh radiation environments and fully leverage the capabilities of today's and tomorrow's powerful rockets, delivering exceptional performance at constellation scales across multiple orbits.With several launches scheduled through 2026 and 2027, we are committed to building a more expansive solar system and evolving into a Kardashev Type II (K2) civilization. If you are a passionate and driven individual thriving in a dynamic environment, eager to contribute to the success of a pioneering Series C space startup, we encourage you to apply.

Join Hermeus as a Tooling Engineer, where you'll be pivotal in designing, developing, and validating cutting-edge tooling, fixtures, and ground support equipment. Your innovative contributions will facilitate the prototyping, integration, and testing of advanced structural assemblies for high-Mach and hypersonic aircraft. This role requires creativity, rapid iteration, and collaboration with multidisciplinary teams, supporting our mission in early-stage research and development.

Role Overview Hadrian Automation is hiring a Senior Engineering Manager for the Builder Tools team in Los Angeles, CA. This leadership role involves guiding a skilled group of engineers focused on automation solutions that improve construction processes. The position carries direct responsibility for product quality, performance, and team development. What You Will Do Lead and mentor engineers working on automation tools for construction Set technical direction and uphold high standards for engineering quality Collaborate with product management and design to deliver solutions that address customer needs Drive projects from concept through delivery, ensuring alignment with company goals Encourage best practices and continuous improvement within the team What We Look For Experience leading engineering teams, ideally in automation or related fields Strong technical background and a record of delivering high-quality products Ability to work effectively with cross-functional partners Strategic thinking and a commitment to mentoring others

Are you a talented and experienced Tool Engineer looking to make an impact? Join our dynamic team at info-ways in Los Angeles, CA. As a Senior Tool Engineer, you will be responsible for the design, development, and optimization of cutting-edge tools that enhance our engineering processes. This role offers the opportunity to work on innovative projects and collaborate with a team of skilled professionals.

Hadrian - Pioneering the Future of ManufacturingAt Hadrian, we are revolutionizing the manufacturing landscape by developing autonomous factories that empower aerospace and defense industries to produce rockets, satellites, jets, and ships at unprecedented speeds and reduced costs. Our innovative approach integrates cutting-edge software, robotics, and comprehensive manufacturing solutions, fundamentally transforming America's production of critical components.With recent funding of $260 million in our Series C round, we are poised to accelerate our mission. We are thrilled to announce the opening of our new 270,000-square-foot factory in Mesa, Arizona, which will create 350 immediate job opportunities. Additionally, we are establishing a new headquarters to support thousands of future hires, launching Hadrian Maritime to cater to the naval production sector, and introducing a Factory-as-a-Service model that provides complete systems rather than just individual components.At Hadrian, we partner with startups, Tier 1 and Tier 2 suppliers, and major defense contractors across aerospace, shipbuilding, and aviation to scale production, lower costs, and expedite delivery on mission-critical programs. Our vision is backed by leading investors, including Lux Capital, Founders Fund, and Andreessen Horowitz. Our rapidly growing team is united by a shared commitment to reindustrialize American manufacturing for the 21st century and beyond!The Factory-as-a-Service team conducts thorough analyses of our clients' production and supply chain challenges, develops data-driven presentations, designs futuristic factories, and collaborates with the Federal and Strategic sales teams to establish long-term partnerships with the Department of Defense, prime contractors, and other manufacturers.This team plays a crucial role in scoping, designing, estimating costs, scheduling, and conducting technology analyses, while also drafting proposals for significant programs and manufacturing transformations across all production methods and domains.With numerous major programs currently underway, we are rapidly expanding our team to effectively analyze, design, scope, plan, and support the execution of large-scale manufacturing initiatives.Key Responsibilities:Design and develop structural and mechanical forge tooling for both ferrous and non-ferrous aerospace components and assemblies, focusing on various forging processes including mechanical, hydraulic, screw, and horizontal hot forming presses.Collaborate with engineers and vendors to source, build, and implement forge tooling systems.Work closely with technicians to validate, install, and optimize the utilization of forge tooling.Perform Finite Element Analysis (FEA), flow simulations, and die stress evaluations to validate design integrity.Document technical specifications, user guides, and operational protocols.

Zoo is building a modern hardware design toolkit aimed at transforming the CAD industry. The company is based in Los Angeles and supports both local and remote teams. Since its founding by Embedded Ventures in 2021, Zoo has focused on creating advanced infrastructure and tools for mechanical CAD, addressing the gap between current software and the demands of today’s hardware design. Role overview The Senior Software Engineer in Language Development will play a central role in advancing Zoo’s next-generation CAD platform. The position centers on KCL, Zoo’s programming language for 3D design. Responsibilities include designing new language features, improving usability, and enhancing the interpreter runtime. This engineer will also integrate KCL into Zoo Design Studio, the company’s custom IDE, allowing users to build KCL programs through a point-and-click interface. What you will do Design and refine features for the KCL programming language Improve the interpreter runtime for better performance and usability Integrate KCL into Zoo Design Studio, enabling intuitive program creation Work with Rust, WebAssembly, and TypeScript to develop advanced developer features Collaborate closely with the engineering team to shape interactive, code-driven design tools For more details about KCL, see the KCL book. Requirements Extensive experience with functional programming languages and interpreters Strong background in modern web technologies Ability to work independently and as part of a collaborative team Curiosity and a drive to explore new approaches Focus on improving user experience

About UsAt Zoo, we are on a transformative journey to reshape the CAD landscape through cutting-edge hardware design tools and infrastructure. Mechanical CAD is in dire need of an upgrade, and the demands of modern hardware design have outstripped existing solutions. We are laying the groundwork for an innovative hardware design toolkit that will empower you to create unprecedented design tools.Founded in 2021 and nurtured by Embedded Ventures, our headquarters are located in Los Angeles, CA, and we embrace a hybrid work model with both local and remote team members.About YouWe seek curious, innovative, and driven self-starters to join our agile and expanding team. You will flourish with us if you possess:A natural curiosity and a desire to learn and innovate.A customer-centric mindset, always considering how to enhance user experience.The ability to work independently and asynchronously while being an effective collaborator.About The RoleWe are in search of a talented Graphics Engine Software Engineer to join our dynamic team and contribute to the core functionalities of our next-generation CAD Graphics Engine! In this position, you will collaborate closely with a compact team of Graphics Engineers to design, prototype, and implement features that enhance users' geometry and modeling capabilities for their hardware designs. Our CAD Engine is optimized for GPU performance and utilizes boundary representations instead of meshes, making familiarity with CAD software, especially B-Rep/NURBS modeling, essential. This is an exciting opportunity to leverage your 3D graphics expertise to disrupt the hardware design sector alongside a hands-on, collaborative startup team!

K2 Space Corporation is at the forefront of satellite technology, developing the largest and most powerful satellites ever launched. With a remarkable backing of $450 million from prominent investors including Altimeter Capital, Redpoint Ventures, T. Rowe Price, Lightspeed Venture Partners, and Alpine Space Ventures, along with an additional $500 million in contractual agreements with commercial and U.S. government clients, we are pioneering the mass production of high-performance satellite platforms for missions ranging from Low Earth Orbit (LEO) to deep space.As the industry transitions to an era of mass abundance driven by advanced heavy-lift launch vehicles, K2 is committed to redefining spacecraft design. Our satellites are engineered to withstand extreme radiation environments while fully leveraging the capabilities of today’s state-of-the-art rockets, providing unparalleled performance at constellation scale across various orbits.With multiple launches scheduled throughout 2026 and 2027, we are dedicated to Building Bigger, contributing to the development of the solar system, and advancing towards becoming a Kardashev Type II civilization. If you are a driven professional who thrives in a dynamic environment and is passionate about playing a vital role in the success of an innovative Series C space startup, we invite you to apply.

At Truemed, we're dedicated to empowering individuals to take charge of their health by unlocking pre-tax HSA/FSA funds for preventive care. Our innovative payments infrastructure seamlessly connects health and wellness merchants to billions of dollars in tax-advantaged consumer spending, enabling effortless HSA/FSA transactions at checkout across Shopify storefronts, direct integrations, and emerging platforms.As a Product Manager on the Merchant Payments & Integration team, you will be pivotal in guiding merchants from their initial API call to their first sale, while overseeing ongoing payment operations, revenue reconciliation, and driving the growth of our platform ecosystem. You will collaborate closely with a technical engineering team to enhance the developer experience, improve payment infrastructure, and create merchant-facing tools that empower our partners to operate with confidence.We seek an individual with a technical background who can effectively communicate with engineers and the development teams of our merchants, while also possessing strong customer empathy. You should excel at translating complex integration challenges into clear specifications and transforming a merchant's operational challenges into well-defined product initiatives. While experience in payments is advantageous, the ability to quickly grasp domain-specific language and foster trust with technical stakeholders is essential.

Join Hadrian - Pioneering the Future of ManufacturingHadrian is at the forefront of revolutionizing manufacturing with autonomous factories that empower aerospace and defense sectors to produce rockets, satellites, jets, and ships at unprecedented speeds—up to 10x faster and at half the cost. Through the integration of cutting-edge software, robotics, and comprehensive manufacturing techniques, we are transforming how America fabricates its most essential components.Recently, we secured $260 million in Series C funding to expedite our mission. We are thrilled to announce the opening of a new state-of-the-art factory in Mesa, Arizona, spanning 270,000 square feet and set to create 350 immediate job opportunities. Additionally, we are establishing a new headquarters to support thousands of future roles, launching Hadrian Maritime for naval production, and introducing a Factory-as-a-Service model that delivers holistic systems rather than standalone components.Collaborating with startups, Tier 1 and Tier 2 suppliers, and major defense contractors across aerospace, shipbuilding, and aviation, Hadrian aims to scale production, minimize costs, and accelerate the delivery of mission-critical initiatives. Backed by prominent investors including Lux Capital, Founders Fund, and Andreessen Horowitz, our rapidly expanding team is dedicated to revitalizing American manufacturing for the 21st century and beyond!The Opportunity:We are on the lookout for a skilled Tooling Technician to play a pivotal role in our fabrication and automation processes. This hands-on, technical leadership position is perfect for individuals with extensive expertise in precision mechanical assembly, metrology, and cross-departmental collaboration. You will contribute to the establishment and expansion of a top-tier fabrication shop tailored to aerospace, automotive, maritime, and defense applications.Join us and make a direct impact on the future of advanced manufacturing in the U.S.—let’s build it together!Key responsibilities include:Precision fabrication and assembly of intricate tooling (e.g., jigs, fixtures, tool masters, gauges) utilizing advanced reference systems.Design and develop custom holding devices, fixtures, and tooling interfaces to enhance manufacturability and efficiency.Setup and employ optical instruments and model-based metrology tools for accurate inspection and alignment.Interpret detailed engineering drawings, CAD models, and specifications to execute high-precision setups.Proactively identify and propose enhancements to tooling processes, documentation, and equipment utilization.Desired Qualifications:Proven experience in tooling fabrication and assembly in a manufacturing environment.Strong understanding of precision mechanical construction and metrology principles.Ability to read and interpret complex engineering documentation and CAD models.Excellent problem-solving skills and a keen eye for detail.Strong collaboration skills to work effectively across various teams.

Join Hadrian in Shaping the Future of ManufacturingAt Hadrian, we are on a mission to revolutionize the aerospace and defense manufacturing landscape through our state-of-the-art autonomous factories. Our innovative approach enables companies to manufacture rockets, satellites, jets, and ships at speeds up to 10 times faster and at costs reduced by half. By integrating cutting-edge software, robotics, and comprehensive manufacturing solutions, we are redefining the production of America's most essential components.Recently, we secured a $260 million Series C funding to expedite our vision. We are thrilled to open a new state-of-the-art Factory in Mesa, Arizona—a sprawling 270,000 square foot facility that will create 350 immediate job opportunities. Furthermore, we are establishing a new headquarters to accommodate thousands of hires in the future, launching Hadrian Maritime to support naval production, and introducing our Factory-as-a-Service model for delivering holistic systems instead of mere parts.We collaborate with startups, Tier 1 and Tier 2 suppliers, and major defense contractors across industries such as space, shipbuilding, and aviation to enhance production, drive down costs, and expedite delivery of mission-critical initiatives. Backed by prominent investors like Lux Capital, Founders Fund, and Andreessen Horowitz, our rapidly expanding team is united by a singular goal: to modernize American manufacturing for the 21st century and beyond!Your RoleAs a Backend Software Engineer, you will engage with multiple internal products and teams:Flow is our flagship FactoryOS platform, housing applications that model, manage, and automate an intricate web of factories.Copilot offers a suite of automation products that enhance or expedite crucial factory processes, including quoting, CAM programming, and CMM programming.Factory Automation is responsible for creating robotic solutions for our factories along with the software that powers them.Prospective candidates will find diverse opportunities to innovate within our extensive backend services and applications, particularly in redefining manufacturing software, from distributed systems to automation infrastructures.Key ResponsibilitiesDesign, architect, implement, and deploy critical backend services across various product lines.Develop and maintain robust, scalable, and high-performance APIs and systems tailored for a complex production environment.Collaborate with manufacturing and software experts during product discovery to determine essential features and improvements.

Join Freeform Future Corp as a Senior Embedded Software Engineer! In this role, you'll be at the forefront of developing innovative software solutions for embedded systems. Collaborate with a talented team to design, implement, and optimize software that powers our cutting-edge products. Your expertise will be essential in driving the success of our projects, ensuring high performance and reliability.