Staff Software Engineer - Mobile at Quizlet | San Francisco, CA

About Quizlet:At Quizlet, we are dedicated to empowering learners to achieve their goals through our innovative learning platform. With a valuation exceeding $1 billion, we engage tens of millions of students each month, including two-thirds of U.S. high school students and half of U.S. college students, facilitating over 2 billion learning interactions monthly.Our approach combines cognitive science with cutting-edge machine learning technologies to create personalized and enriched learning experiences for students, professionals, and lifelong learners. We are driven by the opportunity to support more learners through diverse methodologies and tools.Let’s Build the Future of LearningJoin our mission to design and implement AI-driven learning tools that scale globally and unleash human potential.About the Team:The Quizlet Mobile team is committed to being the leading force in digital learning on mobile platforms. Our team develops and enhances the essential mobile functionalities that make Quizlet a reliable learning partner, covering everything from flashcards and practice modes to AI-enhanced study experiences. We work collaboratively with the wider mobile organization, backend services, design, and product teams to provide seamless, top-quality learning experiences on both iOS and Android devices.About the Role:We are on the lookout for a Staff Engineer to join one of our Mobile teams in San Francisco. In this role, you will lead a team that shapes the core functionalities crucial for keeping learners engaged and successful.You will collaborate closely with engineers, designers, and product managers to deliver exceptional mobile experiences. Your responsibilities will include influencing technical direction, steering architectural decisions, and mentoring fellow engineers while overseeing projects from conception to launch. We seek an individual passionate about crafting intuitive mobile experiences.We are pleased to announce that this is an onsite position at our San Francisco office. To foster teamwork, we require employees to be present in the office a minimum of three days per week: Monday, Wednesday, and Thursday, or as directed by your manager or the company. We believe this arrangement enhances work efficiency, team collaboration, and supports both individual and organizational growth.

About Quizlet:At Quizlet, we strive to empower every learner to achieve their goals in the most effective and enjoyable manner possible. Our $1 billion-plus learning platform caters to tens of millions of students each month, including two-thirds of U.S. high schoolers and half of U.S. college students, facilitating over 2 billion learning interactions monthly.We merge cognitive science with innovative machine learning techniques to personalize and enhance the educational experience for students, professionals, and lifelong learners alike. Our enthusiasm lies in our potential to support a diverse range of learners through various approaches and tools.Let’s Shape the Future of Learning TogetherJoin us in designing and delivering cutting-edge, AI-driven learning tools that scale globally and unlock human potential.About the Team:The AI & Data Platform team is dedicated to creating and maintaining a robust, scalable, and efficient foundation for all data and machine learning operations at Quizlet. This team is the cornerstone of our AI aspirations. As we unify our AI initiatives to develop a powerful product portfolio, the platform team focuses on achieving operational excellence. We actively adopt and optimize the best MLOps and DataOps technologies to expedite innovation throughout Quizlet.About the Role:As a Senior AI & Data Platform Engineer, you will play a vital role in crafting Quizlet’s next-generation analytical data and machine learning architecture. Collaborating with teams across Data Science, ML Engineering, and Product, you will deliver scalable, dependable, and efficient systems that support the development and deployment of AI-enhanced features.Your success will be evaluated based on platform reliability, developer experience, and adoption across teams. This position offers the chance to work with state-of-the-art technologies and contribute to the foundational infrastructure that drives Quizlet’s AI roadmap.We are excited to inform you that this is an onsite position located in our San Francisco office. To encourage team collaboration, we require employees to be in the office at least three days a week: Monday, Wednesday, and Thursday, along with any additional days as requested by your manager or the company. We believe this work environment enhances productivity, fosters team synergy, and supports both employee and organizational growth.

About Quizlet:At Quizlet, we are dedicated to empowering every learner to reach their goals in the most effective and enjoyable manner. Our learning platform, valued at over $1 billion, supports millions of students each month, including two-thirds of U.S. high school students and half of U.S. college students, facilitating more than 2 billion learning interactions monthly.We combine cognitive science with advanced machine learning techniques to personalize and improve the educational experience for students, professionals, and lifelong learners. Our passion lies in maximizing learner engagement through diverse approaches and innovative tools.Let’s Innovate the Future of LearningJoin us in crafting and delivering AI-driven learning tools that transcend borders and unlock human potential.About the Team:The Mobile Study team at Quizlet, located in San Francisco, is dedicated to providing the optimal studying experience for millions of learners around the globe. Our team develops and enhances essential mobile features that make Quizlet a trusted learning ally—ranging from flashcards and practice modes to AI-enhanced study experiences. We work collaboratively with various teams within the mobile organization, backend services, design, and product teams to ensure seamless, high-quality learning experiences on both iOS and Android platforms.About the Role:We are in search of a Senior Software Engineer to become a vital member of our Mobile Study team at Quizlet. In this role, you will be instrumental in developing our iOS and Android applications, enhancing the study features that millions of students rely on to learn effectively with Quizlet. You will play a key role in shaping the core functionalities that keep learners engaged and thriving.You will collaborate closely with engineers, designers, and product managers to deliver high-quality mobile experiences. This position offers you the chance to influence technical direction, contribute to architectural decisions, and mentor fellow engineers while steering projects from concept to launch. We are seeking someone who is enthusiastic about crafting intuitive, high-performing, and dependable mobile experiences that truly make a difference for learners worldwide.We are pleased to inform you that this is an onsite position at our San Francisco office. To promote team collaboration, we require employees to be present in the office a minimum of three days per week: Monday, Wednesday, and Thursday, as needed by your manager or the company. We believe this environment fosters enhanced work efficiency, teamwork, and supports personal and organizational growth.

Join Quizlet as a Principal Technical Program Manager where you will lead large-scale technical projects that enhance our educational platform. You will collaborate with cross-functional teams to deliver innovative solutions that meet the needs of our users and contribute to our mission of making learning accessible and effective.

About Quizlet:At Quizlet, we are dedicated to empowering every learner to reach their educational goals in the most engaging and effective manner possible. Our $1B+ learning platform is utilized by millions of students each month, including two-thirds of U.S. high school students and half of college attendees, facilitating over 2 billion learning interactions every month.We combine insights from cognitive science with advanced machine learning techniques to tailor and enrich the learning journey for students, professionals, and lifelong learners. Our enthusiasm is fueled by the capacity to support learners through diverse methodologies and tools.Join Us in Shaping the Future of LearningBe a part of our mission to create innovative, AI-powered educational tools that can scale globally and unleash human potential.About the Team:Quizlet's Engineering division is responsible for developing the fundamental experiences that enable millions of students and educators to achieve their learning objectives. We work collaboratively across teams to deliver user-centric results, emphasizing the creation of intuitive interfaces, engaging learning resources, and robust, scalable systems.You will be joining a dynamic team of engineers, designers, product managers, and data scientists committed to addressing real-world educational challenges. Our teams operate with a high degree of autonomy, embrace innovative approaches, and prioritize user-centric design. We promote transparency, inclusivity, and teamwork at all organizational levels.About the Role:We are seeking a Senior Staff Engineer to spearhead the technical design, implementation, and delivery of user-facing features essential to Quizlet's continued success. In this role, you will navigate across multiple teams, driving complex initiatives, ensuring engineering excellence, and developing systems that benefit millions of learners worldwide. This position may encompass consumer web experiences, mobile platforms, or a combination of both—flexibility and a broad technical perspective are essential.We are pleased to announce that this is an onsite role in our San Francisco office. To enhance team collaboration, we require employees to be present in the office a minimum of three days per week: Monday, Wednesday, and Thursday, with additional days as needed by your manager or the company. We believe that this in-office environment boosts work efficiency, fosters team collaboration, and supports individual and organizational growth.

Join our dynamic team at rillet as a Staff Software Engineer. We are looking for a talented engineer who is passionate about building innovative solutions and driving impactful projects. In this role, you will collaborate with cross-functional teams to design, develop, and maintain high-quality software applications that meet the needs of our customers.If you have a strong foundation in software engineering principles and a desire to work in a fast-paced environment, we want to hear from you!

About GustoAt Gusto, we are dedicated to empowering the small business economy. Our services simplify complex tasks like payroll, health insurance, 401(k)s, and HR, allowing business owners to concentrate on their passion and customers. With teams in Denver, San Francisco, and New York, we proudly support over 400,000 small businesses nationwide, committed to creating a workplace that reflects and honors the customers we serve. Discover more about our Total Rewards philosophy.About the Role:We are seeking passionate Mobile iOS Engineers who are eager to craft exceptional user experiences. In this role, you will develop features that are not only functional but also intuitive and delightful for our users. You will take charge of scaling our shared services while staying current with the latest iOS advancements. Collaborating with teams from Product Management, Identity, Security, System Design, and Infrastructure, you will build solutions that make a significant impact. If you are enthusiastic about creating elegant, scalable applications and want to be part of a supportive, innovative mobile team, we would love to connect with you!About the Team:At Gusto, we are at a transformative stage with over 1M+ monthly active users and the recent launch of our employer experiences on mobile. Our mission is to address the real challenges faced by small business owners and their employees, with mobile technology being crucial for delivering effective solutions. As a member of our mobile team, you will be at the forefront of this change, collaborating with talented engineers and designers passionate about providing a seamless mobile experience. Together, we aim to empower small business owners and their teams to succeed. If you are ready to make a difference in the mobile landscape at Gusto, we want you on our team!Here’s what you’ll do day-to-day:Architect, build, test, and enhance Gusto’s native iOS app, along with supporting mobile web views that elevate user experience.Develop, iterate, and refine product features that integrate core business functions, work tools, value-added services, and financial products.Collaborate closely with our product management, design, and partner teams...

Quizlet, Inc. supports millions of learners each month by combining cognitive science with advanced machine learning. The platform serves two-thirds of U.S. high school students and half of college students, powering over 2 billion learning interactions monthly. Quizlet’s mission centers on making education more personal and effective for students, professionals, and lifelong learners. The AI & Data Platform team underpins Quizlet’s applied AI initiatives. This group develops and maintains the systems behind personalization, recommendations, the AI Coach, content generation, and emerging agentic experiences. The team oversees the full machine learning model lifecycle: data and feature engineering, training, evaluation, deployment, and inference. Reliability, speed, security, and observability guide their work. Their approach blends managed Google Cloud services, top vendor tools, open-source solutions, and custom internal abstractions to achieve efficient, reliable outcomes. Role overview The Senior Staff Engineer, AI Platform, is a senior individual contributor who defines the technical direction for Quizlet’s next generation of machine learning and large language model infrastructure. This hands-on role involves architecting core platform systems, steering build-versus-buy decisions, and collaborating with teams across Applied AI, Data Science, Product Engineering, and Infrastructure. The position sets standards for how models and LLM-driven systems are trained, evaluated, deployed, and governed at scale. This role is well suited to an engineer who excels at the senior-staff level in large organizations but values the autonomy and impact of a smaller, cloud-native setting. The technology stack includes Google Cloud, Kubernetes and GKE, distributed training, MLflow workflows, data and feature platforms, online and asynchronous inference, and the evaluation and observability tools needed to operate predictive ML and LLM systems at scale. Work location and schedule This is an onsite position based in San Francisco, CA. Team members are expected in the office at least three days a week: Monday, Wednesday, and Thursday, to foster collaboration.

Ironclad stands at the forefront of the AI contracting revolution, seamlessly converting agreements into valuable assets. Our platform accelerates contract workflows, delivers instant insights, and empowers teams to drive their work forward—all while keeping you in control. Whether you're engaged in buying or selling, Ironclad streamlines the entire process on a singular, intelligent platform, giving leaders the visibility they need to stay ahead. Esteemed organizations such as OpenAI, the World Health Organization, and the Associated Press rely on Ironclad to expedite their operations.Our commitment to excellence has not gone unnoticed; we are regularly lauded as an industry leader, recognized as a Leader in the Forrester Wave and the Gartner Magic Quadrant for Contract Lifecycle Management. Additionally, we have been honored as a Fortune Great Place to Work and listed among Fast Company’s Most Innovative Workplaces. Ironclad has also earned a spot on Forbes’ AI 50 and Business Insider’s list of Companies to Bet Your Career On. We are supported by top-tier investors including Accel, Y Combinator, Sequoia, BOND, and Franklin Templeton. For further details, visit www.ironcladapp.com or connect with us on LinkedIn.This position is hybrid, requiring in-office attendance at least twice a week on Tuesdays and Thursdays for collaboration and engagement, with potential additional days for team or company events.Engineering at IroncladIn the capacity of Staff Software Engineer, you will collaborate with cross-functional teams in engineering, product, design, and go-to-market efforts to identify impactful challenges and craft, develop, and deploy innovative solutions. You will be instrumental in shaping a platform that enables legal teams and business partners to excel at scale. As we usher a time-honored profession into the digital era, your contributions will define the future of contracting.We invite seasoned engineers from diverse backgrounds who possess robust coding skills and a proven history of delivering thoughtful, reliable products. Join our collaborative, ego-free team that values mutual learning, diverse perspectives, and an inclusive, supportive work environment. If our mission resonates with you and you are eager to help create a product that legal and business teams cherish, we would love to connect!

Role overview The Staff Software Engineer position at GoFundMe centers on building and enhancing the technology that powers the fundraising platform. Based in San Francisco, this role plays a key part in shaping how millions of people use GoFundMe to support causes and personal projects. The work has a direct impact on user experience and platform reliability. What you will do Design, develop, and improve essential features of the GoFundMe platform Collaborate with engineering, product, and design teams to deliver solutions Help ensure a smooth and dependable experience for everyone using GoFundMe

Are you ready to make a difference? Join our team! GoFundMe stands as the world's leading platform for community-driven benevolence, passionately committed to facilitating mutual assistance among individuals and nonprofits. Since our inception in 2010, we have empowered our community to raise over $40 billion, fostering a culture of support and compassion. We are on the lookout for an enthusiastic and skilled Senior Staff Software Engineer who brings a robust background in developing scalable, high-performance fintech or wealth management solutions. In this impactful role, you will architect and create innovative infrastructures from the ground up, designed to support large-scale, mission-oriented fintech products that empower millions worldwide. Your contributions will play a crucial role in crafting seamless, user-centric experiences that enable meaningful community contributions and drive positive change. As a pivotal technical leader, you will have the opportunity to influence the architecture and strategic direction of our systems, enhancing both our company and the communities we serve. If you're eager to grow both personally and professionally while making a significant impact on GoFundMe's offerings, users, and the causes that resonate most, we want to hear from you! Candidates for this position must be based in the San Francisco Bay Area, with an in-office presence required three days a week.

Join Quizlet as a Senior Software Engineer specializing in Trust & Safety, where you will play a crucial role in enhancing the security and integrity of our platform. You will collaborate with cross-functional teams to develop robust software solutions that protect our community and ensure a safe learning environment.

Join Crusoe as a Staff Software Engineer specializing in Networking. In this critical role, you will design and implement innovative software solutions that enhance our networking infrastructure. You will collaborate with cross-functional teams to optimize performance and reliability, ensuring that our services run efficiently and securely.

Join Quizlet as a Principal Software Engineer to revolutionize the way consumers interact with educational content. In this pivotal role, you will leverage your extensive software engineering experience to design and implement innovative solutions that enhance user experiences. Collaborate with a dynamic team of engineers and product managers to drive product vision and execution.

About UsAt Sydecar, we are on a transformative mission to redefine private markets, striving for accessibility, transparency, and liquidity. Our innovative approach is reshaping how investment vehicles are crafted and executed.We pride ourselves not just as a platform, but as a trusted partner in venture capital. Our commitment lies in simplifying and standardizing private investment experiences, empowering capital allocators to discover and support visionary entrepreneurs shaping the future.Our platform is engineered for optimal efficiency, managing essential tasks such as banking automation, compliance assurance, contract handling, tax management, and meticulous reporting. This allows our investors to focus on what truly matters: forging valuable deals and cultivating impactful relationships.Join us at Sydecar as we lead the revolution in private investing.Location: San Francisco (Hybrid – 2 days per week in office)About Our Engineering TeamsWe are expanding across various teams and are eager to align engineers with roles that resonate with their passions and strengths. Whether your expertise lies in full stack, front-end, or back-end development, we offer opportunities tailored to your skills and career aspirations.Our Technology StackFrontend: TypeScript and React in a mono-repo structureBackend: TypeScript, utilizing NestJS and PrismaDatabase: PostgreSQLTesting & Code Quality: Jest with ESLint/Prettier for linting and auto-formattingDesign: Wireframes and prototypes developed in FigmaInfrastructure: Managed as Infrastructure as Code (IaC) with TerraformYour RoleAs a Staff Software Engineer, you embody the pinnacle of our engineering organization. You’re adept at leading large project teams and tackling intricate projects that few can manage. Your awareness of business and organizational dynamics empowers you to define quarterly technology strategies and spearhead their execution across the organization, enhancing the quality, functionality, and potential of Sydecar's core product. You are primarily a Product Engineer, dedicated to improving the experiences of deal organizers and investors.

About the Role Crusoe is hiring a Staff Software Engineer in San Francisco, CA. This role focuses on building high-performance software applications that support the company’s technology initiatives. What You Will Do Design and develop software applications with an emphasis on performance and reliability Collaborate with engineering teams to deliver solutions that meet business needs Contribute technical expertise to key projects and code reviews Location This position is based in San Francisco, CA.

About LindyAt Lindy, we're on a mission to create an AI assistant designed for everyone — not just the tech-savvy or the builders, but for those who simply want to reclaim their time. The Lindy Assistant seamlessly integrates into iMessage, managing emails, calendars, and meetings with just a two-minute setup. We are crafting the essential bridge between powerful AI technology and the everyday lives of real people.The RoleAs a Staff Software Engineer, you will take charge of high-impact projects from inception to production in a dynamic environment where engineers prioritize creating exceptional products. Collaborating within a small, highly autonomous team, you'll be shipping updates multiple times a day. This position is perfect for someone driven by intrinsic motivation to build, who prioritizes speed without compromising quality, and who measures success by the impact of their work in production.

At Crusoe, our mission is to propel the availability of energy and intelligence. We are developing the engine that empowers individuals to pursue ambitious projects with AI, all while upholding standards of scale, speed, and sustainability.Join us in revolutionizing the AI landscape with sustainable technology. Here, you will spearhead significant innovations, create real-world impact, and collaborate with a team that is defining the future of responsible cloud infrastructure.Position Overview:As a Staff Software Engineer on the Model LifeCycle team, you will be instrumental in developing a robust managed platform that oversees the entire application development lifecycle, specifically focusing on the integration of Machine Learning models, including Large Language Models (LLMs).Your Responsibilities:Enhance systems for large foundation models through fine-tuning (SFT, PEFT, LoRA, adapters), including multi-node orchestration, checkpointing, failure recovery, and efficient scaling.Design and sustain comprehensive training pipelines for Large Language Models.Contribute to the development of distillation and reinforcement learning pipelines (e.g., preference optimization, policy optimization, reward modeling).Create and uphold the infrastructure for agent execution.Implement features for dataset, model, and experiment management: ensuring versioning, lineage tracking, evaluation, and reproducible fine-tuning at scale.Collaboration and Impact:Collaborate closely with Principal Engineers, product teams, and platform teams to implement core abstractions and APIs.Participate in architectural decisions regarding training runtimes, scheduling, storage, and model lifecycle management.Engage actively with the open-source LLM community.This role offers considerable ownership — you will be pivotal in designing and implementing core systems.

Join Asana as a Staff Software Engineer in our innovative AI Studio. In this role, you will leverage your expertise in software engineering to drive the development of cutting-edge AI solutions that empower teams to work more efficiently. Your contributions will be pivotal in shaping the future of our product offerings.

About SemgrepSemgrep is at the forefront of code security, empowering developers to innovate seamlessly. Our platform enables teams to identify, flag, and resolve genuine issues before deployment, all while leveraging an adaptive security framework that evolves as developers code. Semgrep integrates security into the development process without hindering productivity, offering developers the autonomy to work efficiently while ensuring security teams maintain oversight, control, and assurance. With advanced AI capabilities that minimize false positives and prioritize actionable vulnerabilities, we have earned the trust of 95% of security reviewers across over 6 million findings. Semgrep is committed to achieving zero false positives, significantly reducing the workload for AppSec teams by enabling them to triage 80% fewer false alerts across both Code and Supply Chain, effectively managing their backlog.Founded in San Francisco and supported by prominent investors such as Menlo Ventures, Felicis Ventures, Lightspeed Venture Partners, Redpoint Ventures, and Sequoia Capital, Semgrep has been recognized by Gartner in the Application Security Testing sector and is trusted by leading organizations including Snowflake, Dropbox, and Figma. Discover more at semgrep.dev.About the RoleAs a Staff Backend Engineer, you will design, build, and maintain robust backend and infrastructure systems, ensuring a fast and reliable experience for our users. You will collaborate closely with fellow engineers to develop the APIs, data models, and services that drive Semgrep’s products at scale. A solid understanding of databases, query optimization, and distributed systems is essential, along with experience in integrating third-party solutions into existing codebases.Our technology stack includes TypeScript and React for the frontend, while the backend is powered by Python, Flask, and SQLAlchemy, all deployed through Kubernetes and hosted on AWS. Prior experience with these technologies is preferred, but a willingness to learn is equally valued!This is a hybrid role, with an expectation of in-office presence 3 or more days a week in our San Francisco, New York, Boston, or Denver offices, depending on your team. Remote work may be considered for exceptional candidates.CompensationThe estimated annual salary range for this position is between $202,000 and $238,000 USD. The actual salary will be based on various factors, including job-related skills, relevant experience, qualifications, location, internal equity, and market data. In addition to the base salary, total compensation may include equity, variable compensation, and benefits. We consider equity a vital part of our overall compensation package.