Senior Fullstack Engineer, Core

About SprigSprig is revolutionizing experience research with its AI-driven successor to traditional survey tools such as Qualtrics, Medallia, and SurveyMonkey. We envision a future where experience research is efficient, smart, and seamlessly integrated into the product development process.Our mission is to simplify deep customer understanding, making it con…

Complete is dedicated to transforming compensation into a strategic advantage for the most impactful companies globally. We're revolutionizing compensation processes by moving away from outdated spreadsheets to modern, efficient systems. Our solutions encompass comprehensive compensation cycle planning, leveling, total rewards statements for employees, and interactive candidate offers, among other features!Why Join Us at Complete?We understand that effective compensation strategies are vital to a company's success and represent one of its largest expenditures. Many enterprises struggle to develop and implement a solid compensation strategy, which can lead to significant financial and operational inefficiencies. We believe that innovative compensation approaches are the key to sustainable success.Complete is proudly supported by Accel and Y Combinator, and we are fortunate to have esteemed advisors like Will Larson (CTO of Carta), Eric Sagar (COO of Plaid), and Mathilde Collin (CEO of Front).About Our Team We are passionate builders focused on delivering quality. We believe that 21st-century software should be intuitive and require minimal training. Our culture is characterized by low ego and rapid execution. Success doesn't come from large teams but from focused efforts. Our tight-knit team of fewer than 10 people combines exceptional product and business expertise, allowing us to compete effectively in the market. This is your opportunity to join us at a pivotal moment!⭐ Our clientele ranges from innovative startups like Linear and Brex to established public companies like Roblox, and we are continually adding remarkable names to our roster. We thrive in a collaborative environment at our San Francisco office, located near Embarcadero BART, where we work together in person 4-5 days a week. We believe that bringing top talent together in a creative space is the fastest route to success.Your RoleAt this exciting juncture, we are seeking Senior or Staff Engineers to help us scale towards $XXM+ in ARR. Ideal candidates are those who are proactive, enjoy working with urgency, and have a strong focus on customer outcomes. You will have the opportunity to make significant contributions in three key areas:Ownership: We are looking for experienced individuals who can take charge of projects and drive them to successful completion.

Become a pivotal member of our core engineering team at Final Round AI, where you will design, develop, and enhance cloud-native services and comprehensive full-stack solutions. This dynamic role allows you to engage with both frontend and backend systems, spearhead technical projects, and significantly contribute to the delivery of production-ready features of the highest quality. Embrace the opportunity for ownership and autonomy as you rapidly innovate and explore the limits of technology.Key Responsibilities Core DevelopmentDevelop scalable business logic for our cloud-native backend services.Create and implement modern frontend solutions using contemporary frameworks.Work collaboratively with product, design, and engineering teams to construct seamless end-to-end functionalities.Embrace new technologies and methodologies, consistently stepping outside of your comfort zone. Engineering CitizenshipMaintain, refactor, and upgrade existing services.Engage in code reviews to uphold our high standards.Manage on-call responsibilities and incident responses.Enhance developer processes throughout the entire lifecycle from coding to operations. Technical LeadershipDraft technical designs and lead discussions on innovative products.Initiate projects aligned with business objectives, conducting thorough research and crafting solutions for lasting impact.Participate in all phases of product development, from idea conception to prototyping, A/B testing, and scaling of architectures. Technical QualityUtilize automated testing to guarantee the reliability and resilience of features.Implement robust release practices including code reviews, CI/CD pipelines, and deployment automation. Autonomy & OwnershipLead projects with minimal oversight from Tech Leads or the CTO.Effectively communicate technical decisions through meetings, Slack discussions, design documentation, and daily updates.

P-160 About Us At Databricks, we are dedicated to empowering data teams to tackle some of the most challenging problems in the world — from transforming the next mode of transportation into a reality to expediting the development of medical innovations. We achieve this by developing and operating the leading Data Intelligence Platform, enabling our customers to leverage profound data insights that enhance their operations. Founded by engineers with a customer-centric approach, we eagerly embrace every opportunity to confront technical challenges, whether it involves designing next-generation UI/UX interfaces for data interaction or scaling our services and infrastructure across millions of virtual machines. Our journey is just beginning. As a Senior Full Stack Software Engineer, you will collaborate with your team and product management to simplify data insights for our users. We seek engineers who are customer-focused and capable of overseeing the entire product lifecycle, extending beyond mere technical execution. You will lay the groundwork for creating robust, scalable, and delightful products. Below are examples of experiences you will design for our customers, facilitating the complete project lifecycle from data loading and results visualization to statistical model creation and production deployment: User-friendly workflows for creating, configuring, and managing large-scale compute clusters, networks, and data sources. Develop, deploy, test, and upgrade intricate data pipelines, featuring powerful visual data graphs. Streamlined onboarding and management for all organizational members to adopt a data-driven approach. Exceptional SQL-centric data exploration and dashboarding experience on Databricks. An interactive environment for collaborative data projects at scale, with a straightforward path to production.

Flex is hiring a Senior Fullstack Software Engineer to join the Risk Engineering team. This position can be based in New York, San Francisco, or remote within the U.S. Role overview This role centers on designing, building, and maintaining applications that support Flex’s risk management efforts. The Senior Fullstack Software Engineer will collaborate closely with teammates to deliver solutions that improve how risk is assessed and managed across the company. What you will do Develop and maintain both frontend and backend components for risk-related applications Work with team members to design features and solve technical challenges Contribute to projects from initial planning through deployment Requirements Experience in both frontend and backend software development Ability to drive projects through the full development lifecycle Interest in building solutions that support risk management

At Vendia, we are revolutionizing the way businesses engage with AI agents. Our goal is to simplify, accelerate, and secure AI integration while ensuring governance, transparency, and control throughout the process.We are in search of a Senior Backend / Core Engineer to enhance and expand Vendia’s distributed AI data platform. You will be responsible for crucial backend systems, ensuring scalability, availability, low latency, and fault tolerance for our highly multi-tenant platform. Your role will involve designing, developing, and delivering customer-facing functionalities that enable enterprise users to manage and share extensive operational data in real time.

Woflow is an innovative technology startup dedicated to developing cutting-edge products and solutions for the rapidly evolving on-demand economy. Our flagship offering is a comprehensive platform that empowers our clients to seamlessly request and obtain structured merchant data, including menus, images, and store details, through a blend of web applications and public APIs. At the core of our operations, advanced machine learning and artificial intelligence models work in tandem with an automated distributed workforce management system. Proudly, we are recognized as the world's first Merchant Data Platform.We cater to a diverse clientele, including food delivery services, online ordering systems, and e-commerce marketplaces, providing the robust data infrastructure necessary for their growth and scalability.As a Senior Fullstack Engineer at Woflow, you will play a pivotal role in guiding the evolution of our products and the overall direction of the company. Your day-to-day responsibilities will involve planning innovative features, owning product development from inception to completion, and collaborating with the operations team to address and resolve customer concerns. To excel in this role, a passion for coding, meticulous attention to detail, and a commitment to delivering projects with pride are essential.Key Responsibilities:Collaborate across the technology organization, including engineering, product, and devops/data science teams, to deliver cohesive and successful products.Engage directly with the operations team to ensure our data infrastructure remains efficient and effective.Commit to providing an exceptional user experience by writing clean, maintainable, and efficient code.Thrive in a fast-paced, agile environment where your contributions will directly impact our success.Required Qualifications:A minimum of 5 years of professional software development experience.A strong passion for coding and a continual desire to learn and grow.Proven ability to deliver projects with exceptional attention to detail.Preferred Qualifications:Experience with Ruby on Rails.Proficiency in React.Familiarity with Apollo, GraphQL, and web crawling technologies.

Join Patreon as a Senior Fullstack Engineer focused on enhancing our community features. In this pivotal role, you will work collaboratively to design, develop, and maintain innovative solutions that empower creators and foster engagement within our platform. Your expertise in both front-end and back-end technologies will be essential in driving impactful projects that resonate with our user base.

About Nooks.ai:Nooks is revolutionizing sales with its AI Sales Assistant Platform (ASAP), designed to streamline tedious tasks so that sales representatives can concentrate on the human aspects of selling, ultimately driving greater sales pipelines. Trusted by thousands of sales professionals, Nooks has significantly contributed to achieving quotas, saving customers countless hours, and generating substantial revenue streams for organizations including Hubspot, Rippling, and Toast.Our high-performing team has successfully raised over $70M from leading venture capitalists, including Kleiner Perkins, marking their first investment in sales technology in over a decade. Over the past two years, we have quadrupled our Annual Recurring Revenue (ARR) and aim to triple it again this year.Learn more at Nooks.ai.About the Role:We are in search of a talented Senior Fullstack Engineer to join our Core Dialer team. This role entails enhancing the core user-facing dialer experience—encompassing dialing, task management, configurations, connected views, smart lists, and browser extensions—while ensuring optimal speed and reliability for our sales teams.Your Responsibilities:Develop and maintain essential dialer features utilized daily by sales representatives.Collaborate closely with design and product teams to deliver polished user experience enhancements.Optimize backend APIs and frontend performance to minimize latency and complexity.Work cross-functionally with Integrations and Voice Infrastructure teams to ensure seamless integration of workflows.Take ownership of dialer experience systems, progressing towards senior leadership within the team.Gain valuable exposure to distributed systems and their integrations.Qualifications:3 to 5 years of engineering experience, preferably in SaaS product development.Proficient in modern frontend technologies (React) and backend frameworks (Node/TypeScript, REST APIs).Strong foundation in data modeling and caching solutions (Postgres, Redis).Passionate about user engagement and agile iteration.At Nooks, we offer competitive compensation for eligible positions, including a base salary, equity, and comprehensive benefits package.

Join Our Team at Triumph ArcadeAt Triumph Arcade, we are revolutionizing mobile gaming by allowing players to wager and win real money, participate in massive multiplayer games, and engage in social tournaments. Our flagship app has rapidly ascended to the top of its App Store category, achieving remarkable month-over-month growth in both revenue and active users. As we continue to expand, we are excited to launch innovative products like Rips, our successful collectibles app that is breaking new ground in the industry.Supported by leading venture capital firms such as Goodwater Capital, General Catalyst, and DraftKings Drive Fund, Triumph Arcade is poised for incredible growth.Your RoleAs a Senior Fullstack Software Engineer on our web development team, you will play a crucial role in driving both revenue and company growth by transforming our successful mobile app into a robust web platform. You will take ownership of our end-to-end web stack, internal tools, and dashboard, building the infrastructure necessary to foster business opportunities. Your initial focus will be to deliver a web version of Rips, setting the groundwork for future web and Android applications. By establishing high standards for this new platform, you will push the limits of what it means to be a leader in our category.Your ResponsibilitiesDevelop and establish our web platform, laying down the foundation and standards for future web and Android applications.Leverage existing backend systems and infrastructure to construct a web version of Rips within a 3-6 month timeframe.Define best practices and standards for React development, with potential opportunities to work on React Native.Oversee the internal tools and dashboard, implementing enhancements that improve team efficiency and facilitate data-driven decision-making.Collaborate with backend engineers to design APIs and data models, contributing to both API architecture and application performance.Enhance user experience through thoughtful motion design, micro-interactions, and responsive design that feels intuitive and native.

Role Overview Sigma Computing builds a high-performance platform that helps businesses work with modern data architectures. The engineering team is growing and looking for experienced fullstack engineers who enjoy solving complex problems and building solutions across the stack. The team’s mission: make data accessible for everyone. What You Will Do Work on challenging technical problems to deliver fast, interactive analytics and workflow experiences using modern data warehouses. Build software with tools and languages such as Rust, Go, GraphQL, and TypeScript. Design algorithms and techniques that improve performance and interactivity for analytics used by some of the world’s largest companies. Investigate and resolve product or system issues by identifying root causes. Develop and launch new features to support a growing base of users. Collaborate with teams across infrastructure, design, product, customer support, sales, and marketing to create new product capabilities. Location This position is based in San Francisco, CA.

Join Zencastr in our mission to amplify voices across the globe. If you're eager to innovate and revolutionize the podcasting landscape, we invite you to be part of our dynamic, fully remote team of forward-thinkers passionate about making a difference one voice at a time.What You’ll Bring:Proficient in Node.js with a solid grasp of JavaScript fundamentals.Strong understanding of computer science principles, including memory management and algorithmic complexity.Aspirations to innovate, whether it’s through entrepreneurial ventures or solving complex tech challenges.Enjoyment in coding with JavaScript or TypeScript.A keen eye for performance optimization in applications.Comfortable navigating both browser environments and Node.js runtimes.A collaborative spirit and strong communication skills.What Makes You Stand Out:A passion for developing high-performance applications.Notable contributions to open source projects.Desire to thrive in a fast-growing startup environment with its inherent challenges.Empathy for end users, driving your advocacy for their needs during the development process.Commitment to maintaining high code quality and best practices in engineering.Why Zencastr?Collaborate with world-class engineers and designers in a fully remote setup.Thrive in an agile, rapidly evolving work environment.Receive equity reflective of your contributions in a profitable company.Enjoy comprehensive health insurance.Face unique challenges supported by talented colleagues.

About Engineering at Ivo Ivo engineers have led the way in legal technology, introducing several industry firsts: AI agent for automated editing in MS Word (2023) Agentic RAG approaches replacing traditional embedding models (2023) Large-scale legal fact extraction powered by LLMs (2024) Legal assistant for accurate search across vast contract databases (2024) Clustering of related legal documents from the same family (2025) Automated deviation analysis to surface hidden risks in large contract sets (2025) Combining contracts and amendments into time series of composite contracts (2025) Role Overview The Senior Fullstack Software Engineer will design, build, and launch generative AI products that reshape legal workflows. This role covers both front-end and back-end development, with a focus on scale and reliability. Develop full stack generative AI features Deliver performant user interfaces and backend systems capable of processing and analyzing millions of contracts Create data pipelines that coordinate LLMs, extraction, and clustering algorithms Work closely with designers, legal experts, and engineers to change how legal teams operate with AI Our Mission Most major businesses have in-house legal teams who face heavy workloads, tight deadlines, and the repetitive task of reading contracts. Until recently, technology offered little relief. With LLMs, Ivo aims to give lawyers back their time. The mission: restore work-life balance for legal professionals by automating legal tasks through an AI-native platform. Ivo’s software is highly regarded in the industry. Despite strong competition, the company holds an 85% trial win rate, the highest in the field. The team is committed to making a real difference, and there is much more ahead. Why Join Ivo Engineers at Ivo care deeply about code quality and the impact of their work. The team values solutions that make a tangible difference in people’s lives. Location San Francisco

Postman Inc. seeks a Senior Fullstack Software Engineer in San Francisco, California, to help advance the future of API collaboration. This role involves working across both front-end and back-end systems, with a focus on building reliable, scalable solutions that support the company’s platform. Responsibilities Design and develop features across the full technology stack, from user interfaces to backend services Collaborate with cross-functional teams to deliver improvements that enhance user experience and workflow efficiency Contribute to architectural decisions and drive ongoing improvements in software design Mentor junior engineers and support the growth of technical expertise within the team Requirements Proven experience building and maintaining fullstack applications Strong understanding of both front-end and back-end technologies Ability to work effectively with engineers, designers, and product managers Interest in shaping technical direction and contributing to team development

About Us:At LangChain, we are on a mission to revolutionize the presence of intelligent agents in everyday applications. We provide robust solutions for agent engineering, enabling developers to transform their prototypes into production-ready AI agents that organizations can depend on. Originating as widely embraced open-source tools, we have expanded to also deliver a comprehensive platform for building, evaluating, deploying, and managing agents on a large scale.Our tools, including LangChain, LangGraph, LangSmith, and Agent Builder, are trusted by teams developing real AI products across various sectors, from startups to large enterprises. We are proud that millions of developers utilize LangChain to support AI initiatives at prominent companies such as Replit, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, and 35% of the Fortune 500.Having raised $125M in Series B funding from leading investors like IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we are at an exciting juncture, continuously innovating and expanding our product offerings. Each team member has the opportunity to make a significant impact on our growth and collaborative culture. At LangChain, your contributions can redefine how technology interacts with the real world.About the Role:We are looking for a Senior Fullstack Engineer to join our newly established team focused on developing foundational product features and integrations that enhance user acquisition, foster rapid experimentation, and enable self-service expansion. This pivotal role involves building growth systems from the ground up, working closely with cross-functional teams including product, design, GTM, and analytics to streamline user activation, optimize product offerings, and create a seamless growth narrative for both developers and enterprise clients. This position requires on-site presence five days a week in New York City, San Francisco, or Boston.Your Responsibilities:Engage across our technology stack (React, TypeScript, Python, Go) to develop full-stack product features that enhance growth and user retention.Create adaptable experimentation systems and processes that target a variety of growth metrics.Engage in data-driven, rapid growth experiments throughout the user journey, from onboarding to monetization.Design and implement new onboarding features and enhancements that quicken the user’s time to value.Develop growth mechanisms, including usage-based guardrails, intelligent upgrade prompts, and contextual calls-to-action.Collaborate closely with product, design, GTM, and analytics teams to identify, prioritize, and execute impactful growth initiatives.

Join Waymo for Business as a Senior Fullstack Engineer, where you'll play a pivotal role in shaping the future of transportation through innovative technology. In this dynamic position, you'll work collaboratively with cross-functional teams to design, develop, and maintain scalable software solutions that power our autonomous vehicle initiatives.

Join Pinterest as a Senior Fullstack Software Engineer and be a key player in building and enhancing our platform. You will work on both the front-end and back-end of our applications, helping to create seamless user experiences that inspire creativity. This role requires a passion for technology and a strong understanding of software engineering principles.

About CrunchyrollFounded by passionate anime enthusiasts, Crunchyroll is dedicated to delivering the art and culture of anime to a global community. With over 100 million anime and manga fans across more than 200 countries and territories, we connect individuals with the stories and characters they love. Whether through online streaming, theatrical releases, games, merchandise, or events, our platform is fueled by the anime content that resonates with audiences worldwide.Join our innovative team and help us shape the future of anime!About the RoleAs a Senior DevOps Engineer within our Core Infrastructure team, you will play a pivotal role in managing and scaling the systems and services that drive our streaming platform. Your profound knowledge of cloud technologies and DevOps best practices will empower you to tackle complex challenges independently and develop scalable solutions tailored to our customers' needs. Collaborating closely with delivery teams, you will lead projects to fruition, ensuring adherence to platform processes and best practices. In partnership with fellow engineers, you'll design tools and systems that enhance service delivery and promote high-quality software outcomes. Your guidance will help improve systems' efficiency and reliability while fostering a culture of observability and effective incident management. You are encouraged to innovate by introducing new technologies and processes and sharing your expertise across teams.You will report directly to the Senior Manager of Core Infrastructure Engineering.

Your InvitationBecome part of a pioneering team that merges the realms of physical and digital health. As a Senior Fullstack Software Engineer at Hinge Health, you will play a vital role in developing the software that drives our innovative Enso pain relief device, enhancing the lives of millions.This role is not just about coding; you will integrate hardware, firmware, and mobile applications to create a cohesive user experience. We seek an adaptable engineer proficient in a full-stack environment (React Native, Node.js, TypeScript) who is eager to engage with Bluetooth protocols, intricate state management, and backend services to ensure our members receive top-notch pain relief solutions.Your MilestonesIn the first 3 months, you will dive into our device ecosystem, delivering your initial features for the Enso experience while forming solid partnerships with Product, Design, and Hardware teams to understand our mobile-to-device framework.By the 6-month mark, you will spearhead the complete delivery of a significant initiative, such as enhancing hardware capabilities or launching new treatment programs. You will also refine our developer tools and contribute to architectural choices that bolster device connectivity reliability.After one year, you will take on the role of technical owner for a major domain within the Devices Software group, becoming a key resource for navigating complex hardware-software challenges, mentoring junior engineers, and advancing our long-term vision for Enso integration.About YouA Resourceful Problem Solver: You tackle challenges head-on, whether it’s fixing a race condition in React Native, enhancing a Node.js backend, or resolving Bluetooth issues.An Inquisitive Learner: While you may not have all the answers, you possess a solid approach for discovering them, especially in the uncertain territory of hardware-software integration.A Trustworthy Collaborator: You effectively communicate with engineering, firmware, and clinical teams to align on common goals, converting technical limitations into product solutions.Resilient in Nature: You thrive in dynamic settings and can achieve results even amidst ambiguity.Qualifications5+ years of experience in software engineering, with a proven ability to deliver high-quality consumer applications.Expertise in Full-Stack development, with significant knowledge of front-end and back-end technologies.Strong proficiency in React Native, Node.js, and TypeScript.

The ideal candidate is encouraged to work from any of our offices (Silver Spring, NYC, SF, Miami, Denver) 1-2x weekly.ABOUT ROCKET MONEY At Rocket Money, our mission is to significantly enhance the financial well-being of millions. We provide our members with a profound understanding of their finances along with a range of valuable services designed to save time and money, ultimately empowering them on their financial journey.ABOUT THE TEAM The Core team plays a critical role in enabling all engineering teams at Rocket Money to operate efficiently by ensuring that our foundational systems are reliable and easy to build upon. We are responsible for the evolution of platforms and services that are central to our product and company operations, including:Authentication (registration, login, account access, and user lifecycle workflows)Data Privacy and Trust Systems (handling privacy requests, user deletions, and secure management of sensitive data)AI Enablement (providing shared AI infrastructure and tools that other teams use to create exceptional product experiences)Internal Tooling (developing admin tools, operational systems, and data integrations to enhance the effectiveness of our operations and engineering teams)We prioritize accuracy, resilience, and creating the most straightforward pathways for our teams. If you are passionate about building high-impact systems that others rely on, we would love to hear from you.IN THIS ROLE, YOU'LL:Develop and manage Core services and platforms that underpin essential systems like authentication, data privacy workflows, AI capabilities, and internal tools.Take ownership of projects from inception to completion: defining problems, designing solutions, implementing changes, launching, and ensuring ongoing reliability.Collaborate closely with product engineers, data teams, and operations colleagues to create systems that are safe, scalable, and user-friendly.