Senior Staff Software Engineer - Backend Development

About the Role: Join our dynamic team at Tubi TV as a Senior Staff Software Engineer, where your deep technical knowledge will intersect with influential organizational leadership. This position transcends individual service management, requiring a proven ability to make significant contributions across teams, domains, and comprehensive distributed systems. This is a hybrid role based in our San Francisco or New York City offices, with a requirement to be present in-office three days a week. What You'll Do: Define and steer the architectural vision across various services and teams. Lead the design and enhancement of distributed systems. Ensure the systems are developed for enduring scalability, resilience, observability, and security. Facilitate technical alignment across diverse teams within client, infrastructure, product, ads, and content domains. Mentor senior engineers, elevating engineering standards throughout the team. Make pivotal system design decisions impacting multiple platforms. Contribute to domain expertise in areas such as Linear systems, EPG platforms, or time-based content architectures (preferred). Advance Tubi’s backend development practices, encompassing AI-native engineering workflows. Exhibit flexibility to address critical business requirements outside of regular working hours when necessary, such as on-call responsibilities and live events. Demonstrate a strong sense of ownership, proactively managing on-call situations and production stability. Showcase cross-team leadership capabilities, with experience navigating complex organizational environments. Your Background: Proven experience in designing and operating large-scale distributed systems. Expertise in backend development (preferably Elixir and Rust or similar languages). Strong architectural judgment with a track record of successful cross-team technical leadership. Proficient in gRPC/Protocol Buffers, RESTful APIs, Kubernetes, and observability systems. Ability to lead intricate, cross-functional initiatives effectively. Excellent communication skills with the capacity to articulate trade-offs and foster alignment. Experience in high-traffic, mission-critical production environments. Familiarity with Linear content systems, EPG platforms, or time-based scheduling architectures is preferred. Hands-on experience in constructing or supporting systems for large-scale live events (e.g., major sports).

About 3Y HealthAt 3Y Health, we are at the forefront of revolutionizing healthcare administration through our innovative AI business manager. Our mission is to simplify the complexities that consume nearly 40% of the healthcare industry's revenue. Our robust platform equips clinician entrepreneurs with the tools they need to effectively launch, manage, and expand their private practices. With over $200 million in backing from leading investors like Founders Fund, General Catalyst, SoftBank, and 8VC, we are committed to empowering independent providers with advanced AI and automation solutions that save time, foster business success, and enhance care delivery within their communities.Position OverviewWe are on the lookout for a Backend Engineer who is passionate about designing and scaling high-performance backend systems that drive our AI-first platform. The perfect candidate will have a strong background in developing distributed services using languages such as Go, Java, Python, or TypeScript. A solid understanding of modern API design and communication protocols (REST, gRPC, GraphQL) is essential, alongside a commitment to delivering reliable, secure, and scalable infrastructure.Ideally, you have experience integrating AI functionalities—be it through external AI APIs, managing machine learning inference pipelines, or supporting data infrastructure for model training. You're more than just a code contributor; you care about how your systems are deployed, monitored, and maintained in production. Experience with regulated data environments such as healthcare or fintech is a plus.This role is suited for a hands-on engineer who thrives in collaborative, cross-functional settings, works effectively with product and frontend teams, and proactively builds systems designed for scalability, compliance, and maintainability.

Join Our Crew at Ivo! At Ivo, we are not just engineers; we are creators on a mission to revolutionize the legal landscape with cutting-edge technology. As pioneers, we have introduced groundbreaking innovations, including:• An AI agent seamlessly integrated into MS Word to enhance your document editing experience [2023]• Advanced RAG techniques that surpass traditional embedding models [2023]• Large-scale LLM-based legal fact extraction capabilities [2024]• A legal assistant that navigates extensive contract databases with unmatched precision [2024]• Innovative clustering of related legal documents [2025]• Automatic deviation analysis for risk identification in vast contract databases [2025]• The ability to merge contracts with amendments for a comprehensive timeline of 'composite' contracts [2025] Your Mission as a Backend EngineerAs a vital member of our team, your primary role will be to build robust systems that manage and analyze millions of contracts efficiently. Your responsibilities include:• Developing systems capable of processing large volumes of contracts with reliability• Crafting data pipelines that orchestrate LLMs, data extraction, and clustering algorithms at scale• Building the industry’s most accurate search and retrieval systems• Collaborating with legal professionals and product teams to adapt to the rapid evolution of LLM technology Why Join Us?Every major corporation has an in-house legal team, and many of these dedicated professionals are overwhelmed with long hours and tight deadlines. Our mission at Ivo is to empower these lawyers by providing them with innovative solutions that reclaim their time and sanity. We are developing an AI-native platform dedicated to automating the monotonous tasks in legal work. Our products are loved by users, boasting an impressive 85% trial win rate amidst fierce competition. Join us in making a difference!

Join DoorDash as a Senior Staff Software Engineer in Backend Development, where you will play a pivotal role in creating and sustaining a robust, 24/7 global infrastructure system that fuels our dynamic three-sided marketplace of Consumers, Merchants, and Dashers. In this hybrid position, you will collaborate with cross-functional teams to develop innovative solutions that tackle complex business challenges, while mentoring junior engineers and contributing to our technical roadmaps.

About AnthropicAt Anthropic, our mission is to design AI systems that are reliable, interpretable, and steerable. We aim to ensure that AI technology is safe and advantageous for both our users and society as a whole. Our rapidly expanding team consists of dedicated researchers, engineers, policy experts, and business leaders collaborating to create beneficial AI systems.About the Role:We are in search of seasoned, product-oriented Software Engineers to take ownership of the backend systems that enhance user experiences across our API, Claude Code, and Claude.ai. In this role, you will independently define complex, multi-month projects within ambiguous problem domains and guide your peers in making technical and product-related decisions. You will align with product management, engineering teams, and research to identify capability gaps and translate cutting-edge model advancements into deployable products. Your architectural decisions will significantly impact the reliability and scalability of systems serving hundreds of thousands of global users, including internal teams, while you remain actively engaged with the code and our models.We are currently hiring for multiple teams. Team assignments will be made post-interview, considering your preferences and experience alongside organizational requirements. This flexible approach allows us to pair talented engineers with backend product initiatives where they can make the most significant impact and experience the most growth:API Core: You will develop and enhance the foundation of the Claude API—systems that deliver Claude's intelligence to developers ranging from startups to large enterprises. You will manage the performance, reliability, and efficiency of our core serving path, ensuring users derive maximum speed and value from our models. Collaboration with inference and safeguards will be key to optimizing the entire stack.API Capabilities: You will empower developers by integrating frontier model capabilities into the Claude API, overseeing core features such as vision, tool usage, and computer interaction. Your responsibilities will include launching new models and delivering the building blocks that enhance Claude's capabilities with each release, working directly with research and inference to productionize future advancements.API Knowledge: Your focus will be on transforming Claude into a true knowledge worker by ensuring the model has timely access to the right information. You will facilitate secure data access for developers, enabling Claude to automatically process and retrieve relevant data as needed.

Join Our Team at Unify!At Unify, we are at the forefront of innovation, developing the first AI-driven system of action for revenue teams. Our mission is to empower organizations by transforming outbound sales into their most effective growth accelerator, making go-to-market strategies observable, repeatable, and scalable. Founded in 2023 by visionary leaders from Ramp and Scale AI, our diverse team boasts experience from renowned companies such as Airbnb, Meta, Waymo, and Monday.com.In 2024, we achieved an impressive 8x revenue growth and currently serve esteemed clients like Perplexity, Cursor, SoFi, and Justworks. We’re a dynamic and high-energy team that has successfully raised $58M from prominent investors including Thrive, Emergence, and OpenAI. Be part of our journey to redefine the future of go-to-market strategies!About Us:Founded on January 17, 2023, by Austin Hughes and Connor Heggie, Unify aims to build the premier system-of-action for go-to-market teams, starting with an end-to-end platform that facilitates warm outbound sales. Today, the outbound sales landscape is cluttered with cold, mass outreach, yielding minimal conversion rates. Our innovative platform is designed to connect sales teams with the right prospects at the perfect moment.Our remarkable growth trajectory continues, with an 8x revenue increase year-over-year, and we proudly provide services to a wide range of clients, including Guru, Justworks, Together.AI, and Hightouch. Join our passionate, driven team and help us reshape the way go-to-market strategies function.Role Overview:As a Staff Software Engineer, you will lead the development of innovative products from inception to launch, collaborating closely with our founders. You will take ownership of critical engineering projects that deliver significant value to our customers while establishing the technical groundwork for Unify. This is an opportunity to work at the cutting edge of technology, leveraging the latest advancements in AI.Your Responsibilities:Collaborate with a highly skilled team in product, design, and engineering to shape our product roadmap and engineering foundation.

What artisan IsAt artisan, we are pioneering the development of AI employees—autonomous digital workers capable of performing real jobs, beyond just being chatbots or copilots.Our flagship product, Ava, serves as an AI Business Development Representative (BDR) utilized by hundreds of companies. Ava conducts lead research, composes and dispatches emails in the voice of the customer, orchestrates complex outbound sequences, manages her own deliverability infrastructure, optimizes her performance over time, and adeptly addresses objections while booking meetings. She is not merely a tool; she is a true teammate.As a YC W24 company, we have raised over $35 million from esteemed investors, including Y Combinator, and currently boast an annual recurring revenue (ARR) exceeding $8 million. We are in the process of developing Ava 2.0, a transformative iteration that will redefine the capabilities of AI employees. The engineering challenges we face are significant, with a broad surface area to navigate.The RoleIn this foundational engineering role, you will be responsible for developing the backend that enables our AI employees to function effectively.We process millions of signals, including lead data, email engagement, deliverability metrics, and behavioral patterns, to facilitate autonomous decision-making. The backend is integral to our operations, powering the AI, running the platform, and influencing Ava's performance for each customer. You will take ownership of significant components of this system.Here’s what your work will entail:High-throughput AI orchestration.Design and construct the services and pipelines that empower Ava to process substantial volumes of signals and render swift, reliable decisions.Platform infrastructure.Artisan integrates an entire sales stack—covering email infrastructure, CRM, lead databases, campaign engines, inbox management, and AI coordination—into a single product. You will be entrusted with key aspects of this platform.High ownership, end to end.You will design, build, deploy, and monitor projects. We emphasize a holistic approach, where architecture and implementation are intertwined. You will be accountable for outcomes, not merely task lists.Our pace is rapid, and iteration is key:You will continuously deliver updates. Our engineering organization operates with minimal bureaucracy, facilitating a flat structure.Our technology stack includes TypeScript/Node, PostgreSQL, Redis, Kubernetes, Mastra, Temporal, Langfuse, ECS, EC2, all deployed on AWS. We practice continuous release cycles.Who You AreYou possess 6+ years of backend engineering experience, ideally in a high-performance environment.

Join Whop as a Staff Software Engineer, BackendAt Whop, we are pioneering the future of financial technology with a commitment to delivering sustainable income solutions worldwide. Our goal is to build the largest online marketplace where individuals and businesses can effortlessly create, connect, and transact on a single, innovative platform.With an astonishing $3 billion in annual payouts across 144 countries, we are on an impressive growth trajectory, experiencing a month-over-month transaction volume increase of approximately 25%.Backed by significant investments from industry leaders like Insight, Bain Capital Ventures, and Peter Thiel, including a major strategic partnership with Tether, the world’s leading stablecoin enterprise, Whop is well-positioned for future success.Our vibrant team comprises enthusiastic entrepreneurs who are deeply rooted in the digital landscape, with over 75% having launched their own businesses before joining us. This includes 53 former founders and 30 who have achieved over $1 million in revenue. Our product leaders bring valuable expertise from major tech companies like Meta and Robinhood.To learn more about our mission and vision, visit whop.com.

Join Saris AI as a Staff Backend Software Engineer, where you will play a pivotal role in developing innovative solutions that harness the power of artificial intelligence. In this dynamic position, you will collaborate with cross-functional teams, design scalable systems, and contribute to the overall architecture of our backend solutions.

About WorkWhileAt WorkWhile, we are dedicated to empowering hourly workers to achieve financial stability and improved quality of life. With over 80 million Americans engaged in hourly employment, many face unpredictable schedules, low wages, and scarce benefits, which can lead to economic hardship.Our innovative platform is transforming the landscape of frontline work by fostering a more adaptable and effective labor market. Leveraging advanced AI technology, WorkWhile enables businesses to swiftly connect with top-tier talent. Workers enjoy same-day pay, complimentary telehealth services, opportunities for skill advancement, and the flexibility to select shifts that align with their expertise and personal schedules.Our ambitious aim is to harmonize incentives and address inefficiencies in the labor market, challenging the $650 billion staffing and recruiting industry. Supported by Khosla Ventures and celebrated by the Inc. 5000 for remarkable growth, WorkWhile is at the forefront of redefining the future of work.

About the TeamThe Launchpad team comprises innovative engineers who work closely with our VP of Product & Design and our Co-founder to uncover strategic business opportunities and develop cutting-edge solutions.About the RoleDoorDash is seeking a seasoned backend engineer to take charge of a confidential initiative. Over the last year, the Launchpad team has gained significant traction with a range of emerging hardware-integrated products. This is a hands-on technical position focused on designing backend systems and APIs that must function flawlessly 24/7, regardless of network conditions, while rapidly deploying new features and collaborating cross-functionally with Product, Design, and Hardware teams.You will report directly to the Head of Launchpad Engineering.You’re Excited About This Opportunity Because You Will…Design robust backend solutions to support in-field hardware devices around the clock.Collaborate with Product Managers, Business leaders, and key stakeholders to define the team’s roadmap and vision, and oversee the execution of that roadmap.Thrive in an ambiguous, fast-paced business environment.Promote innovation, teamwork, the implementation of advanced technologies, and creative problem-solving.We’re Excited About You Because You Have…A Bachelor's, Master's, or PhD in Computer Science or a related field.Over 10 years of industry experience.Proven experience leading complex distributed systems projects and mentoring other engineers.A strong background as an engineer in a fast-paced, product-oriented development environment.Extensive experience in designing and scaling backend services for performance and reliability.A track record of shipping consumer-facing products at scale.

About UsAt 3Y Health, we are revolutionizing healthcare management through our innovative AI-powered business manager, designed to simplify the complexities of healthcare administration that consume nearly 40% of industry revenue. Our robust platform empowers clinician entrepreneurs to establish, operate, and expand their private practices. By equipping independent providers with cutting-edge AI and automation tools, we enable them to save valuable time, build thriving businesses, and provide superior care to their communities. Backed by over $200 million in funding from prominent investors such as Founders Fund, General Catalyst, SoftBank, and 8VC, 3Y Health is at the forefront of healthcare innovation.About the RoleWe are on the lookout for a talented Staff Software Engineer - Backend who will be pivotal in designing and scaling high-performance backend systems that drive our AI-first platform. The ideal candidate will possess a significant background in developing distributed services using languages like Go, Java, Python, or TypeScript. A deep understanding of modern API design and communication protocols (such as REST, gRPC, GraphQL) is essential, along with a commitment to delivering reliable, secure, and scalable infrastructure.We're particularly interested in candidates who have experience with services that support AI functionalities—whether integrating external AI APIs, managing ML inference pipelines, or building data infrastructure for model training. You won't just be a code contributor; you will care about the deployment, monitoring, and management of your systems in production. Bonus points if you have experience in regulated data environments like healthcare or fintech.This position requires a hands-on engineer who thrives in collaborative, cross-functional environments, working effectively with product and frontend teams while proactively building for scalability, compliance, and maintainability.ResponsibilitiesDesign and implement scalable backend services and APIs (REST, gRPC, GraphQL) that are integral to our AI-driven healthcare platform.Collaborate closely with frontend, product, and design teams to translate product requirements into robust technical solutions.Integrate AI capabilities into services by building pipelines, managing inference processes, or orchestrating external AI APIs.Ensure service reliability by implementing best practices in deployment, monitoring, logging, observability, and continuous integration.Operate production systems end-to-end, encompassing deployment, incident response, performance tuning, and cost optimization.Handle sensitive and regulated data (healthcare, payments) with a strong emphasis on security, privacy, and compliance.

At Plaid, we're reimagining the future of financial interactions. Join us in our mission to empower developers and enhance the financial lives of millions. As a Senior Backend Software Engineer, you will play a pivotal role in creating robust tools that streamline how users connect their financial accounts to various applications. Collaborate with industry leaders and contribute to a network that spans over 12,000 financial institutions across North America and Europe. You’ll be instrumental in driving innovation and excellence in our engineering practices while working alongside a talented team committed to making a real impact in the financial landscape.

Role Overview Sigma Computing builds a high-performance data platform aimed at making data accessible and useful. The engineering team focuses on modern data architecture and delivers features that help organizations explore and analyze data efficiently. As the team grows in San Francisco, Sigma is looking for a Senior Backend Software Engineer who enjoys solving complex problems and contributing to a product used by a wide range of users. What You Will Do Tackle challenging problems related to providing interactive experiences on data warehouses for exploration and analysis. Work with technologies including Rust, Go, GraphQL, Node, and Kubernetes. Build backend distributed services, design algorithms, and create APIs for a cloud-based application. Debug, track, and resolve product or system issues as they arise. Design and implement new backend features to support a growing user base. Participate in design and code reviews with teammates and stakeholders to maintain high standards and share knowledge. Location This position is based in San Francisco, CA.

About Us:Point One Navigation is at the forefront of redefining precise location technology. Our vision is to create a comprehensive location platform that empowers innovation, enhances safety, and boosts efficiency across various sectors, including robotics and transportation. We pride ourselves on being a dynamic and collaborative team that excels at tackling intricate challenges swiftly and effectively.The Role:We are on the lookout for a talented Staff Engineer to enhance our Backend Services team. In this pivotal role, you will be instrumental in shaping the architecture of our systems and developing services that underpin our global corrections network and real-time location capabilities.Key Responsibilities:Design, develop, and sustain high-performance backend services and network systems using Go and Java.Create detailed systems design documentation, architectural decision records, and comprehensive technical specifications.Engage actively in the formulation of technical strategies, architectural discussions, and infrastructure roadmap planning.Enhance the performance and reliability of mission-critical, globally distributed systems.Collaborate with cross-functional teams to deliver integrated solutions for real-time data processing and corrections delivery.Assume ownership of significant backend infrastructure components, ensuring their design, deployment, and continuous monitoring.

P-150 At Databricks, we are dedicated to empowering data teams to tackle some of the world's most challenging problems, ranging from security threat detection to the development of cancer treatments. We achieve this by creating and managing the leading data and AI infrastructure platform, allowing our clients to concentrate on the high-value challenges central to their missions. Founded in 2013 by the original creators of Apache Spark™, Databricks has evolved from a modest office in Berkeley, California, to a global enterprise with over 1000 employees. Our platform is trusted by thousands of organizations, from startups to Fortune 100 companies, establishing us as one of the fastest-growing SaaS firms worldwide. Our engineering teams design and develop highly technical products that meet significant real-world needs. We continually push the limits of data and AI technology while maintaining the resilience, security, and scalability essential for our customers' success on our platform. We operate one of the largest-scale software platforms, comprising millions of virtual machines that generate terabytes of logs and process exabytes of data daily. Given our scale, we frequently encounter cloud hardware, network, and operating system faults, and our software must effectively shield our customers from any disruptions. As a Software Engineer focused on backend development, you will collaborate closely with your team and product management to prioritize, design, implement, test, and operate microservices for the Databricks platform and products. This role includes writing software in Scala/Java, building data pipelines using Apache Spark™ and Apache Kafka, integrating with third-party applications, and interacting with cloud APIs such as AWS, Azure, CloudFormation, and Terraform. Below are examples of teams you can join: Data Science and Machine Learning Infrastructure: Develop services and infrastructure that bridge the gap between machine learning and distributed systems. Our technology supports flagship collaborative workspaces, notebooks, IDE integrations, and project management tools. We also facilitate large-scale machine learning through environment management, distributed training, and lifecycle management via MLflow. Compute Fabric: Construct the resource management infrastructure that supports all big data and machine learning workloads on the Databricks platform in a robust, flexible, secure, and cloud-agnostic manner. This software oversees millions of virtual machines.

Join Our Mission at LeonaAt Leona, we are dedicated to empowering individuals to take charge of their health and well-being, along with that of their patients and loved ones. Our vision is clear: we aim to revolutionize the healthcare experience for everyone, making high-quality care accessible regardless of geographic location.Patients should feel empowered and comfortable in managing their health proactively, while healthcare professionals can focus on delivering exceptional care without the burden of administrative overhead. Our innovative platform enhances doctor-patient interactions via WhatsApp, acting as an AI clinical assistant to automate non-urgent tasks and provide patients with 24/7 access to their doctors.With offices in San Francisco and Mexico City, our diverse team brings a wealth of experience from renowned tech companies like Rappi, Uber, Modern Fertility, and Wonder. We are proudly supported by top-notch investors, including General Catalyst and Accel, alongside distinguished angel investors from successful firms like Nubank and Maven Clinic.If you are eager to learn, thrive in a dynamic startup environment, and are ready to roll up your sleeves to create something extraordinary, we would love to hear from you!The Challenge AheadWe are searching for a seasoned software engineer to help us scale and shape the future of Leona. Our platform is designed to transform doctor-patient communication, leveraging AI to streamline clinical workflows, reduce burnout, and enhance personalized care. If you are passionate about solving complex engineering challenges, enjoy a multifaceted role, and are excited to take products from concept to launch, this position is tailored for you.

Why Weave ExistsAt Weave, we are on a mission to revolutionize the way therapeutic knowledge is captured, transformed, and communicated throughout the drug development process. Our innovative approach combines human expertise with advanced AI tools to accelerate the delivery of safe and affordable medications to patients.The Weave Platform enhances regulatory workflows at every stage by seamlessly integrating AI technology. Partnering with our clients, Weave is dedicated to creating the ultimate AI workbench for the entire therapeutic lifecycle.The Role & Your MissionWe are seeking a talented Staff Backend Engineer to join our engineering team, reporting directly to the Backend Engineering Manager. This role requires navigating between data, AI, and backend systems to ensure the stability, performance, and reliability of our AI systems. You will be responsible for developing innovative solutions to customer challenges, analyzing outcomes, and deploying these solutions into production. Success in this position hinges on your ability to transition smoothly from conception to experimentation, testing, and production. We prioritize effective problem-solving over trends, favoring straightforward, well-tested solutions that are reliable yet impressive.What You Will OwnUnderstanding customer challenges and creating straightforward solutionsCollaborating with Product and Design teams to rapidly identify solutionsWriting efficient, maintainable code using Django, Python, Postgres, and RedisManaging ongoing technical complexities while delivering value on product initiativesWhat You'll BringExperience in an early-stage, product-focused startup environment (fewer than 50 employees)Over 8 years of experience with Django in a production settingPractical experience using LLMs in productionAbility to interact directly with LLMs without the use of abstraction librariesA humble, hungry, and intelligent approachCapacity to work quickly while delivering high-quality outcomesPragmatic and analytical thinking with efficient decision-making skillsBonus: Experience working on products in regulated domains or with critical data privacy and security requirementsBachelor's degree in Computer Science or a related field preferred

HeartFlow Inc. seeks a Senior Backend Software Engineer in San Francisco, California. This role centers on designing and enhancing backend systems that power the company’s cardiovascular analysis platform. The technology supports both clients and clinicians, contributing to patient care in the medical field. Key responsibilities Build and improve backend software components for HeartFlow’s main platform Work closely with engineering, product, and clinical teams Support software quality and reliability for medical use Take part in solutions that aim to improve cardiovascular health outcomes Location This position is onsite in San Francisco, California.