Senior Backend Engineer

At StubHub, we're on a transformative journey to elevate the live event experience on a global stage. Whether it's your first concert or your hundredth game, our mission is to ensure you are delighted from the moment you seek a ticket to the instant you step through the venue gates. We extend the same commitment to our sellers, whether they are individual fans selling a single ticket or promoters orchestrating a worldwide stadium tour. Our goal is to make StubHub the safest, most convenient platform for millions of fans browsing our services worldwide.Open Distribution is an innovative sector within StubHub's Product and Technology organization, dedicated to pioneering the future of partner inventory synchronization. As a Software Development Engineer II (Backend) on the Content Right Holder Tooling team, you will play a pivotal role in creating AI-driven core services, APIs, data flows, and distributed systems aimed at fostering automation and intelligent workflows utilizing OpenAI and Claude.Location: Hybrid (3 days in office, 2 days remote) – Century City, CA Your Responsibilities:Develop Backend and Agentic AI ServicesDesign and enhance backend services and agentic systems that streamline content right holder workflows, automation, and intelligent decision-making.Facilitate AI-Powered Workflows - Integrate AI capabilities like automated validation, diagnostics, recommendations, and guided workflows via backend services and supporting APIs.Continuous Platform ImprovementEngage with Distributed and Data-Driven Systems - Contribute to services managing data ingestion, synchronization, and processing at scale, prioritizing accuracy and resilience.Translate Product Requirements into Functional Systems - Turn product ideas into operational systems, collaborating across frontend and backend to deliver cohesive features.Ensure System Reliability and Operability - Develop systems that are observable, debuggable, and resilient, while enhancing platform performance in real-world scenarios.

At StubHub, we are dedicated to transforming the live event experience worldwide. Whether attending a first concert or a hundredth show, we ensure our customers are delighted from the moment they search for a ticket until they enter the venue. This commitment extends to our sellers, from fans listing a single ticket to promoters of major tours, making StubHub the ultimate platform for safely and conveniently offering tickets to millions of global fans.Join the Open Distribution TeamWe are a newly established segment within StubHub’s Product and Technology division, focused on innovating partner inventory synchronization. As a Software Engineer II (Frontend) on the Content Right Holder Tooling team, you will spearhead the development of sleek, user-centric frontend experiences utilizing TypeScript and React. Your contributions will help create tools that our partners depend on daily. You will also play a key role in integrating AI-driven user experiences, leveraging intelligent automation, insights, and agent-driven workflows directly into our user interface, employing technologies like large language models, OpenAI, and Claude.Location: Hybrid (3 days in office/2 days remote) – Century City, CA

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.

About Us In the evolving landscape of the restaurant industry, having a passion for food and service is just the beginning. At Otter, we empower restaurateurs to thrive in the digital age by harnessing the power of technology. Our innovative platform is trusted by renowned establishments like Chick-fil-A, Ben & Jerry’s, KFC, and Eataly to enhance their online food delivery operations. We are dedicated to increasing sales, minimizing order issues, and alleviating delivery challenges for businesses of all sizes. Your Role As a Backend Software Engineer, you will play a pivotal role in designing, implementing, and optimizing systems that support our critical applications. Your responsibilities will be tailored to your strengths and interests, with opportunities in: Infrastructure: Develop and maintain scalable, secure, and high-performance systems to ensure operational reliability. Platform: Create robust APIs and developer tools that enhance team efficiency and scalability. Product: Build backend services that power customer-facing applications and deliver seamless user experiences. Key Responsibilities: Design and implement scalable backend systems and APIs. Ensure system performance, reliability, and security. Work collaboratively with product managers, designers, and fellow engineers to deliver comprehensive solutions. Engage in code reviews, testing, and documentation to uphold high-quality standards. Mentor junior engineers or assume leadership responsibilities, depending on your level of expertise. What We Seek We value diverse experiences and are on the lookout for individuals who are enthusiastic about tackling complex challenges. Basic Qualifications: Proficiency in backend programming languages such as Java or Go. Familiarity with relational and NoSQL databases (e.g., PostgreSQL, MongoDB, Redis). Experience with cloud services like AWS, Google Cloud, or Azure. Knowledge of RESTful APIs, microservices, and distributed systems. Exceptional debugging and problem-solving abilities. Preferred Qualifications (for Senior Positions): Experience leading projects and mentoring teams. Advanced understanding of system architecture and design principles.

About RevelRevel is at the forefront of transforming the control mechanisms for critical hardware utilized in the aerospace, automotive, energy, and manufacturing industries. Our innovative software stack integrates an intuitive command and control interface, a unique programming language designed specifically for hardware management, and a high-performance runtime environment. We enable engineers to swiftly, reliably, and safely build, test, and deploy essential systems.Role OverviewWe are seeking a dedicated Software Engineer with expertise in Rust to join our dynamic and expanding engineering team. Your contributions will play a pivotal role in enhancing Revel's runtime systems, infrastructure components, and real-time functionalities, achieving unmatched reliability and performance standards.

Hello! We are Oscar, and we are on the lookout for a talented Senior Backend Software Engineer to enhance our Engineering team. Founded in 2012, Oscar is pioneering a health insurance model that revolves around a full-stack technology platform, dedicated to serving our members effectively. Our mission is to create a health insurance experience that feels personal—like having a doctor in the family. About the Role As a Senior Backend Software Engineer, you will be pivotal in developing reliable and maintainable applications, infrastructure, and interfaces that simplify interactions between our members and healthcare providers. You will collaborate with product managers, designers, and partners to tackle challenging problems. Our Senior Engineers work closely with their peers to enhance our technology landscape and implement best practices. Work Location: This role is based in our Los Angeles office, requiring a hybrid work schedule of three days in the office each week. Thursdays are designated in-office days for team meetings and events, while the remaining two days are flexible to your availability. #LI-Hybrid Pay Transparency: The base salary for this position ranges from $158,400 to $207,900 annually. You will also enjoy employee benefits, access to Oscar's unlimited vacation program, company equity grants, and annual performance bonuses.

At Coco Delivery, we are passionate about revolutionizing the last-mile delivery experience with the help of cutting-edge robotics. We recognize that the current delivery service landscape is not adequately meeting the needs of merchants, and we are driven to develop a sustainable, reliable, and seamless delivery solution that benefits both merchants and their customers.As a venture-backed Series A startup, Coco operates a fleet of sidewalk robots, facilitating deliveries to thousands of customers weekly throughout Los Angeles. Our high-energy, collaborative environment fosters excitement and innovation. Our headquarters is located in the vibrant community of Venice, CA.About the RoleIn the capacity of Staff Software Engineer, you will take ownership of product development from initial design through to deployment and testing. You will collaborate with product managers to gain insight into user needs—encompassing merchants, consumers, and internal stakeholders—propose effective technical solutions, guide project structures for junior engineers, and assess overall impact.This position requires in-office presence. Coco is an office-first company that thrives on collaboration and cross-functional teamwork. We seek a candidate who is enthusiastic about contributing to a dynamic in-office culture.About the TeamAs a member of the Delivery Platform team, you will develop software solutions that enhance our delivery operations. Our diverse team of engineers is responsible for every layer of our technology stack. Key responsibilities include:Consumer and Merchant Products: We create tools aimed at delivering a smooth, efficient, and enjoyable end-to-end delivery experience for our users—both merchants and their customers. Each interaction with our robots is thoughtfully designed to address user challenges and create moments of joy.Order Integration: We maintain software partnerships that enable Coco to receive orders from key platforms like DoorDash, UberEats, and GrubHub, alongside custom systems. You will engage in various integrations and enjoy test orders from some of your favorite restaurants!Delivery Management: We develop backend services that make automated decisions based on user behaviors, supply/demand dynamics, regulatory requirements, sidewalk conditions, and more.Logistics: Delivery is a complex and costly challenge. We collaborate with other teams within Coco (such as Merchant Operations, Consumer Experience, Field Operations, TeleOperations, and Autonomy) to optimize our logistics processes.

Join Riot Games as a Principal Software Engineer, where your deep expertise in backend services will help shape the future of an exciting unpublished R&D product. You will have the opportunity to work on high-load, high-availability systems that are fundamental to delivering an extraordinary gaming experience for millions of players globally.As a leader in this role, you will champion technical vision, foster team collaboration, and mentor junior engineers while ensuring our backend systems are robust and scalable. Your contributions will directly impact gameplay features, server reliability, and live services, allowing us to launch successfully at scale.

About Us:Endless Commerce is revolutionizing the multi-channel commerce landscape with our cutting-edge platform that enhances order management, fulfillment, and integrations, catering to businesses across the spectrum. Our goal is to empower brands to streamline their operations through advanced technology and a robust, scalable architecture. We are a vibrant team committed to crafting dependable, elegant, and efficient software using tools like Ruby on Rails, Sidekiq, PostgreSQL, Redis, and Heroku. Our mission is to provide seamless, high-performance experiences that contribute to our clients' success.Your Role:As a Senior Back-End Software Engineer, you will significantly influence the development of our core platform and spearhead impactful improvements. Your responsibilities will include designing, implementing, and maintaining backend services tailored to an expanding user base, addressing scaling challenges, and enhancing performance. By collaborating closely with a talented team of engineers and key stakeholders, you will make architectural decisions, create best practices, and bolster system reliability. Your contributions will be vital in enhancing the platform's scalability, efficiency, and overall success.Key Responsibilities:Develop, test, and deploy back-end services and APIs utilizing Ruby on Rails, PostgreSQL, and other components of our technology stack.Architect scalable solutions capable of handling high-volume data and transaction processing.Maintain and optimize existing code to ensure platform stability and performance.Collaborate with front-end engineers, product managers, and other stakeholders to define, design, and launch new features.Monitor production systems, troubleshoot incidents, and implement enhancements to prevent future issues.Mentor junior developers and foster a culture of continuous learning and improvement.Write clean, maintainable, and well-documented code, adhering to software development best practices.

Join our innovative team in a hybrid work environment where most US-based roles can be performed remotely.Our Mission:We strive to connect individuals with their next significant opportunity.About Us:At ZipRecruiter, we are a premier online employment marketplace. Utilizing cutting-edge AI-driven smart matching technology, we connect millions of businesses and job seekers through our innovative mobile, web, and email services. Our partnerships with top job boards further enhance our service offerings, and our job search app is the highest-rated on both iOS and Android.Role Overview:We are on the lookout for an experienced Senior Software Engineer specializing in Site Reliability. In this pivotal role, you will collaborate with product-focused engineering teams to provide robust infrastructure, advanced tools, and architectural designs essential for the rapid and sustainable scaling of our services.As part of our SRE team, you will significantly influence engineering methodologies across the organization. Your expertise will help us create streamlined pathways toward best practices, establish safeguards against potential pitfalls, and minimize operational toil. The ideal candidate will possess a comprehensive understanding of both immediate product goals and long-term scalability objectives, along with the technical acumen to design systems that harmonize these priorities.Key Responsibilities:Architect, implement, and troubleshoot large-scale fault-tolerant distributed systems.Develop and maintain a diverse suite of tools and frameworks around our Kubernetes clusters.Design, implement, and optimize a complex and efficient CI/CD infrastructure.

At StubHub, we are on a transformative journey to elevate the live event experience globally. Whether it's an individual's first time attending an event or their hundredth, we are dedicated to providing an exceptional journey from ticket discovery to entry. Our platform aims to be the go-to solution for fans and sellers alike, ensuring a secure and convenient way to connect with millions of other fans worldwide.StubHub is in search of a passionate Software Engineer II to innovate and develop state-of-the-art technologies and intricate features. As a key player in our engineering team, you will face significant, complex challenges, where your creativity and problem-solving skills will shine as you develop impactful technical solutions. We value initiative and enthusiasm, and you will have the opportunity to engage in diverse projects that meet business needs throughout your career with us. The ideal candidates are those who display versatility, a growth mindset, a willingness to learn, and an eagerness to tackle new challenges across the organization. Location: Hybrid (3 days in office/2 days remote) – New York, NY or Century City, CA About the team: The Consumer Experience (CX) team is dedicated to creating a seamless product experience for fans seeking to discover, purchase, and sell tickets for their favorite live events through our web and mobile platforms. This team plays a crucial role in fulfilling StubHub’s mission to become the premier platform for accessing live events by designing enjoyable and effective product experiences used daily by millions. We are committed to understanding our users’ needs and delivering both short-term and long-term feature innovations that enhance their experience. Our global fan base requires us to deliver a localized experience that feels personalized for individuals in over 60 regions and 30 languages. We believe that diverse perspectives and transparency in impact foster the best innovations, which is why our cross-functional team of specialists in product, design, engineering, and data collaborates closely with equal input in the ideation process.

About UsAt Metropolis, we are at the forefront of building artificial intelligence that transforms the real world into a responsive environment. We are pioneering the Recognition Economy—a vision for the future where repetitive tasks fade away, and being recognized opens doors to access, comfort, and belonging. Our innovations are reshaping parking into a seamless experience for millions while extending our intelligence layer across retail and hospitality. Join us in creating a world that feels instinctively magical. The future is already here, and we need innovative builders and problem solvers like you.Your RoleWe are looking for an experienced Senior Software Engineer with a focus on Backend development to join our Advanced Technologies team. In this position, you will design, develop, and maintain scalable backend systems that accurately model vehicle locations by integrating state-of-the-art hardware with advanced machine learning techniques. You will utilize a modern tech stack, including Java, Scala, gRPC, Redis, MySQL, Kubernetes, and Kafka, to deliver high-performance, reliable services. If you’re excited about tackling complex technical challenges and thrive at the intersection of distributed systems, real-time data processing, and scalable infrastructure, we want to hear from you.Your ResponsibilitiesDevelop robust, scalable backend services using Java and Scala for mission-critical operations.Design and implement gRPC APIs to facilitate high-performance, real-time data transfer between services.Utilize Redis and MySQL to ensure efficient data storage and retrieval, maintaining reliability and low-latency access.Deploy and manage microservices on Kubernetes, optimizing for scalability, resilience, and cost-effectiveness.Work with Kafka to create scalable, event-driven architectures for real-time data streaming and processing.Collaborate with Hardware, Machine Learning, and Operations teams to ensure seamless integration and provide necessary tooling.Analyze and resolve performance and scalability bottlenecks while prioritizing system reliability and data integrity.

Join our innovative team at StubHub Inc. as a Software Engineer II - AI Enablement. In this role, you will contribute to the development and enhancement of cutting-edge AI technologies that enhance user experience and streamline operations. You will collaborate with cross-functional teams to drive impactful solutions that leverage artificial intelligence in our systems.

At Riot Games, our engineers possess extensive expertise in distinct technical domains while also embracing the chance to engage in a wider array of disciplines. As a Principal Software Engineer, you will collaborate with fellow engineers to deploy technical solutions that have a company-wide impact. Your efforts will ensure high standards of quality and stack relevance, while providing clear insights into exemplary engineering practices.In your role as Principal Software Engineer for the Content Access Platform (CAP) team, you will take charge of designing and managing numerous backend services that serve as the backbone for all of Riot’s games on a global scale. The CAP team is responsible for large-scale, globally distributed systems that support millions of players and fans. Our services facilitate a variety of in-game experiences, including missions, battle passes, virtual currencies, and player inventories. By collaborating with internal platform teams and game development teams at Riot, you will spot opportunities to centralize functionality and speed up development by creating systems that are user-friendly, scalable, reliable, and globally deployed. Your responsibilities will extend beyond coding; you will be a visionary leader, shaping domain architecture and aligning technological strategies with enterprise objectives. You will mentor teams, drive innovation, and advocate solutions that highlight the substantial value of our work to Riot’s game development teams and players. You will report directly to the Engineering Manager of the Content Access Platform team within Player Platform.

YOUR ROLEWe are seeking a talented Senior Backend Developer to join our dynamic team and contribute to the evolution of our high-volume payment processing platform. In this role, you will collaborate with diverse payment gateways, optimize transaction workflows, and uphold the integrity and reliability of our systems, ensuring seamless processing for our users.ABOUT XSOLLAXsolla is a pioneering global commerce platform dedicated to addressing the unique challenges faced by developers in the video game industry. From independent studios to major AAA titles, we empower our partners with comprehensive tools and services for funding, distribution, marketing, and monetization. With a steadfast belief in the future of gaming, Xsolla is committed to connecting opportunities and continuously enhancing resources for creators. Headquartered in Los Angeles, California, we serve as the merchant of record, supporting over 1,500 game developers worldwide in expanding their reach and scaling their businesses. We're here to provide developers with the pathways to success and the tools they need to thrive in the gaming landscape.Discover more about us at xsolla.com.

WHAT YOU’LL DOAs an Engineering Manager at Viant Technology, you will spearhead a dynamic team of skilled backend engineers dedicated to developing low latency, high throughput ad tech systems. This pivotal role calls for a robust technical background in Go/Java (Backend), alongside extensive experience in microservices, serverless architecture, and database systems. Your leadership will be crucial in driving the success of Viant's ad serving and measurement systems. You will oversee the design and implementation of innovative features for our bidding server, working in tandem with partner engineering teams and product management.THE DAY-TO-DAYLead the creation of high-quality features in alignment with product management requirements.Initiate and promote continuous improvement efforts to enhance performance, reliability, and scalability.Participate in coding and design discussions, collaborating with the engineering team to contribute to significant projects, conduct code reviews, and provide technical guidance while balancing leadership duties.Ensure high-efficiency team operations by implementing quality practices, delivering speed in output, and maintaining superior code quality.Cultivate a culture of ongoing growth and improvement through effective coaching, mentoring, and feedback with measurable outcomes.GREAT TO HAVE8+ years of experience in software engineering, including 1-3+ years in managing low latency, high throughput backend teams.Bachelor’s degree in Computer Science or Engineering; Master's degree preferred.6+ years of hands-on programming experience in Java and/or Go.Proven track record of developing large, horizontally scalable distributed systems.In-depth knowledge of various cloud providers and services, particularly AWS and GCP.Experience in building large-scale, customer-facing applications with an emphasis on real-time performance, scalability, and reliability.Strong ability to analyze latency, throughput, CPU/memory profiles, and identify performance bottlenecks in real-time systems.Successful history with agile development and CI/CD practices.Experience in the ad tech industry is a plus.

Join Hadrian and Shape the Future of ManufacturingAt Hadrian, we are revolutionizing the aerospace and defense sectors by creating autonomous factories that dramatically enhance production efficiency. Our innovative approach combines cutting-edge software, robotics, and comprehensive manufacturing solutions, enabling companies to manufacture critical components—rockets, satellites, jets, and ships—up to 10 times faster and at half the cost. Recently, we secured $260 million in Series C funding to accelerate our mission and are excited to announce the opening of a new 270,000 square foot facility in Mesa, Arizona, which will generate 350 new job opportunities. With plans for further expansion, including a new headquarters and the launch of Hadrian Maritime, we are redefining what it means to manufacture in America.Our collaborations span startups, Tier 1 and Tier 2 suppliers, as well as prominent defense contractors in space, shipbuilding, and aviation, all aimed at scaling production, cutting costs, and expediting delivery for mission-critical projects. Backed by esteemed investors such as Lux Capital, Founders Fund, and Andreessen Horowitz, our rapidly growing team thrives on a shared vision to reindustrialize American manufacturing for the future.Your RoleWe are in search of a passionate and experienced Backend Technical Lead specializing in robotics to become a vital part of Hadrian’s Factory Automation team. This pivotal position entails leading software and robotics engineers in the design and deployment of sophisticated robotic software and automated cell control systems, essential for high-precision and scalable manufacturing.As a leader in this dynamic environment, you will guide your team in transitioning advanced production systems from concept to operational status while executing our automation strategy to expand Hadrian's presence across multiple factories in the U.S. We are looking for a curious and self-driven expert to join our elite team.Key ResponsibilitiesDevelop robust software interfaces for CNC machines and various manufacturing equipment.Design motion paths and code for manufacturing robots, creating APIs and interfaces for upper-level cell control software.Collaborate with cross-functional teams to conceptualize, implement, and enhance manufacturing cells, ensuring seamless integration of automated systems within Hadrian factories.Lead technical decision-making and define engineering direction for the team.

Join StubHub, where we are dedicated to transforming the live event experience on a global level. Whether it's a customer's first concert or their hundredth sporting event, we aim to provide unparalleled service from the moment they search for a ticket until they enter the venue. We also prioritize our sellers, ensuring that whether a fan is listing a single ticket or a promoter is managing a worldwide stadium tour, StubHub remains the safest and most user-friendly platform for ticket offerings.The Fulfillment team is committed to ensuring the authenticity of every ticket delivered. We are responsible for the entire post-purchase process, which includes barcode integrations, mobile wallet functionality, partner API connections, inventory management, monitoring, and incident response. Our goal is to achieve zero fulfillment errors, providing a smooth experience for both fans and sellers.As a Software Engineer II, you will develop comprehensive post-purchase flows and partner integrations that enhance our reliability and deliver measurable business outcomes on a grand scale.

At VideoAmp, we are dedicated to revolutionizing the advertising landscape by providing cutting-edge software and data solutions that optimize media investments for our clients. Our mission is to cultivate an inclusive workplace where every employee can express their true selves, drive results, and enjoy their work. We believe that success comes from a collaborative team that embraces challenges and seeks innovative solutions.ResponsibilitiesLocation: Los Angeles, CA (Hybrid)As a Senior Backend Engineer on our API Engineering team, you will be responsible for developing and scaling the robust APIs that drive the VideoAmp platform, enabling clients to effectively plan media, activate campaigns, and measure audiences across both linear and digital platforms.Your focus will be on creating production-ready API solutions that are high-performing, secure, and reliable. You will leverage modern orchestration and data systems to ensure the quality and efficiency of our services. Your contributions will significantly influence how major brands and publishers assess and transact in advertising, collaborating closely with teams across Data Science, Measurement, Product, and Engineering Services.We are looking for a proactive, detail-oriented individual who thrives in a high-ownership role and values teamwork.Proficient in Agentic AI development tools such as Claude Code and CoPilot.Design, test, and produce scalable production-grade APIs using Go, with occasional work in Python or JavaScript.Enhance and maintain essential API services that support large-scale planning and measurement workflows.Implement and optimize process orchestration utilizing Temporal and Airflow.Ensure API resiliency, observability, and performance optimization.