Backend Engineer at Plaud | San Francisco

Join Plaud as a Backend Engineer and be part of an innovative team driving the future of technology. You will design, develop, and maintain scalable backend systems that enhance our product offerings and improve user experiences. This is an exciting opportunity to work with cutting-edge technologies and collaborate with talented professionals in a fast-paced…

About SvixAt Svix, we are a dynamic and rapidly expanding startup revolutionizing server-to-server communication through cutting-edge webhook technology. Our robust, scalable, and high-performance infrastructure is trusted by industry leaders such as Etsy, TaskRabbit, Brex, and numerous Fortune 500 companies.With a product and team that rank in the top 1%, we pride ourselves on creating an exceptional developer experience and are committed to building a company that defines the next generation of developer infrastructure.Backed by $11M in funding from prominent investors including a16z and Y Combinator, as well as founders and CTOs from renowned companies like GitHub, Segment, Lookout, and Fly.io, we are poised for significant growth.The RoleWe are seeking a passionate and high-performing Backend Engineer with expertise in Rust. In this role, you will tackle intriguing problems and overcome technical challenges. Our fast-paced environment values speed of execution, and we expect you to share our obsession with delivering an outstanding developer experience.If you are a top achiever eager to excel in your career alongside others who share the same drive, this is the perfect opportunity for you.MissionAs a Rust Backend Engineer, your mission will be to design and implement efficient message delivery systems at scale. You will be instrumental in solving challenging technical problems while contributing to a culture that prioritizes developer experience.OutcomesDeliver high-quality production code in a fast-paced environment.Support the team in scaling our product while maintaining stability and high availability.Develop new features that enhance the developer experience for our clients.CompetenciesBe a driven and passionate engineer dedicated to producing quality work.Demonstrated experience in building production services using Rust.Excellent communication skills and a collaborative approach.A strong commitment to providing an exceptional developer experience.Nice to Have: Experience working in high-scale and highly available environments.

Who We AreLightning AI, the driving force behind PyTorch Lightning, was established in 2019. We have developed a comprehensive platform that streamlines the process of creating, training, and deploying AI systems, transforming innovative ideas from research to production with greater efficiency.Following our merger with Voltage Park, a leading neocloud and AI Factory, we are proud to combine cutting-edge developer-focused software with cost-effective, large-scale computational resources. Our platform provides teams with essential tools for experimentation, training, and production inference, all while ensuring security, observability, and control.Our clients range from independent researchers to startups and large enterprises. Lightning AI has a global footprint, with offices in New York City, San Francisco, Seattle, and London, and is supported by prominent investors including Coatue, Index Ventures, Bain Capital Ventures, and Firstminute.Our ValuesMove Fast: We prioritize speed and precision, breaking down complex challenges into manageable steps.Focus: We tackle one goal at a time, working collaboratively to deliver features with accuracy.Balance: We believe sustained performance is rooted in rest and recovery, promoting a healthy work-life balance to optimize your performance.Craftsmanship: We value excellence and attention to detail, taking pride in honing our skills.Minimal: We embrace simplicity as a driver of innovation, eliminating unnecessary complexity through disciplined focus on what truly matters.What We're Looking ForWe are seeking a talented Backend Engineer to contribute to the development and scaling of the Lightning AI platform, encompassing frontend, CLI, API, billing, security, and integrations.The ideal candidate will take ownership of significant features and lead development efforts from conception to launch while collaborating with a highly skilled team of engineers, product managers, and designers. You will have the opportunity to advance groundbreaking technology that will reshape the machine-learning ecosystem!You will join the Blue Squad and report to our Director of Engineering. This is a hybrid position based in our Bay Area office, requiring in-office attendance two days per week.

Join our dynamic engineering team at tvScientific, where innovation meets technology! We are seeking a talented Software Engineer II specializing in Backend development to help us create cutting-edge solutions. In this role, you'll have the opportunity to work on exciting projects that impact our users and contribute to our mission of delivering exceptional experiences.As a Software Engineer II, you will be responsible for designing, developing, and maintaining high-performance backend systems. You will collaborate with cross-functional teams to implement scalable solutions, optimize existing code, and ensure the reliability and efficiency of our platform. If you are passionate about software development and looking for a challenging yet rewarding environment, we would love to hear from you!

About UsOur mission is to revolutionize language learning.Learning a new language can transform lives by providing access to diverse cultures, career opportunities, and communities. With two billion people globally striving to learn languages, the most effective method—one-on-one tutoring—remains difficult to access at scale and has not evolved significantly over the years. Speak is developing an AI-powered, human-like tutor that fits in your pocket, offering a conversation-first approach that allows learners to practice speaking, receive immediate feedback, and progress through thoughtfully designed lessons. This results in a comprehensive journey from novice to confident speaker across multiple languages.Since our launch in South Korea in 2019, Speak has emerged as the leading language learning app, now available to learners in various markets and over 15 languages. As one of the foremost AI companies globally, we have secured over $150 million in venture capital from notable investors such as OpenAI, Accel, Founders Fund, and Khosla Ventures, with a diverse team spread across San Francisco, Seoul, Tokyo, Taipei, and Ljubljana.About This RoleWe are seeking a Senior Backend Engineer, with full-stack capabilities, to help create innovative AI-driven product experiences. The ideal candidate should have experience collaborating closely with product, design, and machine learning teams, alongside a proven track record in developing polished consumer applications. This role is pivotal in shaping our latest products focused on programmatic, conversational language learning and will significantly impact the future direction of our company.Your ResponsibilitiesCrafting innovative AI-driven product experiences and user interfaces for the web.Full-stack engineering with a primary focus on designing scalable backend systems.Troubleshooting complex streaming challenges.Taking ownership of the complete development cycle of features from ideation to production.Writing code efficiently, shipping frequently, and making a substantial impact on our business by facilitating the scaling of our content.Your Profile5+ years of industry experience as a Backend Engineer, ideally within a fast-paced startup environment.Bonus: Experience on an app that has reached over 1 million users.Exceptional problem-solving and communication skills, along with the ability to work effectively in a collaborative environment.

Join Sesame as a Backend Infrastructure Engineer and play a critical role in building scalable infrastructure that supports our innovative services. In this dynamic position, you will collaborate with cross-functional teams to design, implement, and maintain backend systems that power our applications.

Join Cardless as an Engineering Manager in the heart of San Francisco! You will lead a talented team of engineers dedicated to building innovative financial solutions. Your role will involve overseeing project development, mentoring team members, and ensuring the delivery of high-quality software products.As a pivotal leader in our organization, you will collaborate with cross-functional teams to define technical requirements and drive the overall engineering strategy. If you have a passion for technology and a proven track record of managing engineering teams, we would love to hear from you!

Cardless creates credit card and loyalty platforms for consumer brands, powering programs for companies such as Coinbase, Bilt, Qatar Airways, and Alibaba. With active products in the market and a growing base of cardholders, the company is expanding rapidly. Role overview The IT Operations Engineer manages the internal technology that supports Cardless day to day. This position plays a key part in shaping systems and workflows to help the team work efficiently, especially as the company scales. What you will do Oversee and improve internal IT operations Set up and maintain systems for onboarding and offboarding employees Build the foundation for scalable, reliable IT processes as Cardless grows Location San Francisco, California

Join Strala, where we are redefining the insurance industry by building innovative solutions from the ground up.In less than a year, we have achieved multi seven-figure ARR, growing at an impressive 50% month-over-month. Our funding comes from esteemed Tier 1 investors, including Peter Thiel’s Founders Fund, with leadership from early OpenAI, Cognition, and Scale AI partners. Our dynamic team includes alumni from Harvard, Berkeley, and Oxford, along with experience from leading firms such as Optiver, AMD, and Palantir.What We SeekProblem Solver - You thrive on tackling complex challenges and have a proven track record.High Agency & Ownership - You take initiative and drive projects to fruition, with bonus points if you have experience as a CTO or founding engineer.Proven Builder - Minimum of 2 years in backend development using Python and a history of delivering production-ready code swiftly.Core System Design - You will take ownership of our core infrastructure, including databases like PostgreSQL and vector databases.Cloud Expertise - Proficient in REST, GraphQL, GCP, AWS, and Docker.Your Initial Month at StralaLaunch from Day 1 - You will deploy your code into production on your first day.Ownership - You will create specifications and independently build features.Problem Solver - You will hire your next teammate, design core infrastructure, and scale our existing codebase.Our ValuesAmbition: We aim to excel and be the best in our field.Performance: We value speed, systemic thinking, and efficiency.Ownership: We take responsibility when we identify a problem and work to solve it.Spirit: We foster clarity, optimism, and meritocracy.What We OfferImpact - Play a key role in shaping our company, transforming an industry, and making your code resonate with millions.Intensity - Engage with complex challenges, ownership, and in-person collaboration in SF.Reward - Work on engaging projects with competitive salaries and equity in the top quartile.Team - Join a competitive and driven team that pushes each other to excel.

At Hover, we empower individuals to design, enhance, and safeguard the properties they cherish. Utilizing our proprietary AI, developed over more than a decade of extensive real estate data, we address pivotal queries such as “What will it look like?” and “What will it cost?”. Homeowners, contractors, and insurance experts depend on Hover for precise measurements and interactive 3D models of properties, all achievable through a quick smartphone scan.Driven by curiosity and purpose, our team is dedicated to serving our customers and communities. We believe that the best innovations stem from diverse perspectives and take pride in fostering an inclusive, high-performance culture that encourages growth, accountability, and excellence. Supported by renowned investors like Google Ventures and Menlo Ventures, and trusted by industry leaders such as Travelers, State Farm, and Nationwide, we are transforming how people perceive and interact with their environments.Why Hover Wants YouWe are in search of a proactive full-stack engineer who is committed to crafting reliable, high-quality systems that create real-world impact.Our Mobile team comprises a close-knit group of engineers specializing in Rails, iOS, React Native, and Android, all of whom are dedicated to their craft and customer experience. We develop and refine the mobile platform that is central to Hover’s operations — the systems that convert real-world property data into accurate 3D models and measurements, utilized daily by contractors and insurers. We collaborate seamlessly across engineering, product, and design to enhance core customer journeys while scaling our platform with confidence.In this role, you will engage with all layers of the technology stack — designing scalable backend APIs, optimizing data flows, and enhancing user-friendly frontend experiences — all aimed at building products that are high-performing, resilient, and meticulously designed. If you are excited by the challenge of solving intricate system problems and want your contributions to have a visible, measurable effect, this is where you can excel.

About CasapCasap is an innovative Series A startup backed by over $30M in funding from renowned investors such as Emergence, Lightspeed, and Primary Ventures. Located in the vibrant tech hub of San Francisco, our team consists of experienced product leaders from industry giants like Robinhood and Chime. Our mission is to revolutionize banking operations by automating disputes and combating friendly fraud. Our solutions have garnered love and appreciation from everyday users and major financial institutions alike.We are currently seeking skilled Backend Engineers to join our team in San Francisco, eager to enhance the banking experience with our rapidly growing product that sits at the cutting edge of automation and Artificial Intelligence.

Role overview Patreon is seeking a Staff Software Engineer specializing in Backend Platform for its San Francisco office. The position centers on designing and building scalable backend services that support and enhance the experience for creators using Patreon. What you will do Design and implement backend systems that can grow alongside Patreon's expanding user base Partner with engineers, product managers, and other teams to deliver reliable and user-friendly platform features Help guide technical decisions that influence the future direction of Patreon's backend architecture Collaboration This role works closely with cross-functional teams to ensure the platform addresses both technical requirements and user needs.

About AirwallexAirwallex is a pioneering unified payments and financial platform designed for global enterprises. With our unique blend of proprietary infrastructure and advanced software, we empower over 200,000 businesses worldwide—including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN—with fully integrated solutions for managing everything from business accounts and payments to spend management and treasury functions, all at a global scale.Founded in Melbourne, we are proud to have a diverse team of over 2,000 innovative professionals across 26 offices worldwide. With a valuation of US$8 billion and backing from premier investors such as T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is at the forefront of creating the future of global payments and financial services. If you are ready to take on the most ambitious challenges of your career, we invite you to join us.

At Scribd, Inc., we are dedicated to enhancing human comprehension. Our diverse range of products—including Scribd®, Slideshare®, Everand™, and Fable—empowers billions around the globe to transition from mere access to profound insight, practical application, and mastery.Our CultureWe foster an environment where authenticity and boldness are celebrated. Here, we engage in constructive debates and make commitments, embracing the unexpected as we prioritize our customers’ needs.We believe that optimal performance stems from a balance between individual flexibility and community connection. With Scribd Flex, employees can select their preferred work styles and locations, fostering collaboration through intentional in-person gatherings. All employees are required to attend occasional in-person meetings, regardless of their remote status.We seek team members who embody “GRIT”—a blend of passion and perseverance towards long-term goals. This mindset shapes our approach to work: establishing and achieving Goals, delivering Results, innovating with fresh ideas, and contributing positively to our Team dynamics.Team Overview:Our ML Data Engineering team drives metadata extraction, enhancement, and content comprehension across all Scribd brands. We handle hundreds of millions of documents and billions of images, providing high-quality metadata that enhances content discovery and fosters trust among millions of users worldwide.Operating at an impressive scale, we support a variety of data types, including user-generated content, ebooks, and audiobooks. Our work intersects machine learning, data engineering, and distributed systems, collaborating with product and applied research teams to implement scalable ML and LLM solutions in production.Position Summary:We are on the lookout for a Software Engineer II with extensive experience in developing event-driven, distributed, and scalable systems using Python. In this capacity, you will design and optimize large-scale data and service pipelines on AWS, crucial for Scribd’s content enrichment and metadata systems. You will collaborate closely with cross-functional teams to create reliable and efficient solutions.

About CasaAt Casa, we believe that homes are among life’s most cherished assets, yet the experience of homeownership can often be frustrating. We are on a mission to revolutionize this experience by creating a next-generation personal property management solution tailored for single-family homes, ensuring that owning a home becomes a delight.Founded by early visionaries from Uber, CloudKitchens, and Levels, Casa is proud to be supported by a remarkable group of leading venture capital firms and angel investors. Our service is already live and delivering value to paying members.About the RoleWe are seeking a pioneering Senior Backend Engineer to join our dynamic team. In this role, you will be instrumental in designing, developing, and deploying robust backend systems that provide exceptional value to our members.You will collaborate closely with our founders, fellow engineers, and designers to craft innovative and impactful products. Your contributions will be vital in shaping our core systems and defining the culture of our founding team.Key ResponsibilitiesArchitect and develop scalable, secure, and reliable backend systems.Design and implement APIs that enhance our iOS applications and other client interfaces.Optimize the performance and scalability of our services to accommodate an expanding member base and increasing data volume.Stay updated with the latest advancements in backend technologies and cloud infrastructure, integrating new methodologies as suitable.Mentor a growing engineering team through code reviews and constructive feedback to uphold high-quality standards.About YouYou are passionate about building robust systems. You possess a deep understanding of backend architecture, API design, and database management, and are eager to construct systems that can scale with our increasing member base.You are excited to be a founding engineer at an early-stage startup, ready to contribute to the structure and systems being established, while also shaping the company culture.You thrive on building. You embrace the challenges and opportunities for growth that come with joining an early-stage company, and you excel in a fast-paced, evolving environment.You think and act decisively. Your proactive mindset will contribute significantly to our mission.

Join Our TeamAt Stytch, we pride ourselves on being the premier identity platform tailored for developers. Our innovative features, such as device fingerprinting and secure account takeover-resistant authentication, empower businesses to manage identity and access with confidence. As a Senior Software Engineer, you will collaborate closely with leadership to elevate our product experiences to unparalleled levels. Your role will involve architecting solutions across our technology stack, overseeing the design and implementation of team projects, and focusing on the most vital initiatives on our product roadmap.This is a hybrid full-time role based in the SF Bay Area. While we value in-office collaboration, we understand the importance of flexibility. We aim for team members to work in the office three days a week, fostering strong connections while allowing for remote work flexibility.What Inspires YouA collaborative workspace that allows you to see the direct impact of your work on user experience.A passion for mentoring fellow engineers and nurturing the next generation of engineering leaders at Stytch.The ability to envision future system designs while delivering incremental improvements and making strategic trade-offs to accelerate value delivery.A deep pride in your code, with a commitment to writing, reviewing, and maintaining high-quality software.An eagerness to shape team culture and drive growth through effective recruitment of senior engineers and streamlined operational processes.A desire to create user-friendly products that simplify the lives of developers both internally and externally, enhancing the experience for Stytch's customers.What We Seek5+ years of experience as a backend or backend-focused full-stack engineer.Basic familiarity with frontend technologies (ability to debug frontend as necessary; frontend expertise not mandatory).Experience with Go, Node.js, TypeScript, and React.

About the RoleJoin us as a pivotal technical founder at Known, where you will be responsible for developing the back-end systems and infrastructure that drive our innovative platform. Your expertise will shape the APIs that cater to millions of requests, establish real-time communication frameworks for voice and text interactions, and create data architectures that facilitate intelligent matching on a large scale. You will design robust, high-performance systems primed for growth alongside our expanding user base.In collaboration with our founding team, including specialists in AI/ML, full-stack development, product management, and design, you will architect back-end services that effectively manage complex workflows. This includes streaming LLM responses, processing payments, handling batch matching jobs, and enabling real-time chat functionalities, all while ensuring simplicity and enhancing developer efficiency. This is a high-responsibility position where your decisions will lay the groundwork for the future scalability of Known.ResponsibilitiesDesign and develop scalable back-end services using Node.js/TypeScript, including RESTful APIs, background job processing, and data pipelines for real-time and batch operations.Architect and enhance database systems with Postgres, focusing on schema design, query optimization, indexing strategies, and data integrity at scale.Build real-time communication infrastructures utilizing WebSockets for chat and WebRTC for audio/video, ensuring minimal latency and maximum reliability.Integrate and oversee third-party services (such as OpenAI/Anthropic LLMs, Google/Apple Pay, reservation platforms, and notification services) with effective error handling and monitoring.Collaborate with AI/ML engineers to construct APIs and data pipelines that support model predictions, manage training data collection, and facilitate experimentation workflows.Take charge of infrastructure, deployment, and observability — develop CI/CD pipelines, implement monitoring and alerting systems, optimize cloud expenses, and guarantee system reliability as user traffic increases.Design for performance and scalability — implement caching strategies, optimize API response times, and architect systems capable of accommodating significant growth without necessitating rewrites.Requirements4–6 years of experience in building production back-end systems, preferably for consumer products, high-traffic applications, or startups.Strong proficiency in TypeScript and Node.js, with a thorough understanding of asynchronous programming techniques.

Join Point as a founding Senior Backend Engineer and be part of a team creating a modern and aspirational banking experience. We are dedicated to enhancing everyday debit cards with exciting rewards and benefits, setting a new standard in banking.Discover more about Point's innovative team and dynamic culture here.

About UsEma is at the forefront of developing cutting-edge AI technology designed to enhance creativity and productivity for every employee within the enterprise. Our innovative solutions enable businesses to automate repetitive tasks through Ema, the Universal AI employee. Founded by industry veterans from Google, Coinbase, and Okta, we are backed by some of the world's leading investors and angels. With headquarters in Silicon Valley and Bangalore, we offer a dynamic hybrid work environment, with employees expected to work from the office three days a week.Your RoleWe are on the lookout for a skilled Backend Software Engineering Lead to join our vibrant team. In this role, you will spearhead the design, development, and maintenance of our enterprise software applications. Collaborating with a multidisciplinary team of product managers, designers, and developers, you will deliver top-notch software solutions tailored to meet our enterprise clients' needs. The ideal candidate will possess extensive experience across the technology stack and a strong grasp of web frameworks, APIs, databases, and various back-end programming languages. Above all, you should be passionate about contributing to a rapidly growing startup with a mission to make a significant impact.Key ResponsibilitiesDevelop and maintain enterprise software applications, focusing on API, data, application, and service development.Write clean, efficient, and maintainable code through a test-driven development process.Construct scalable and reliable back-end systems using programming languages such as Go and Python.Design and maintain APIs utilizing REST or GraphQL standards.Integrate various enterprise applications and services using scalable frameworks like FastAPI.Create and manage data schemas with PostgreSQL, Redshift, etc.Contribute to front-end interfaces employing HTML, CSS, and JavaScript frameworks like React or Angular.Ensure application security and adherence to industry best practices.Continuously enhance software development processes and methodologies.

Who We AreAt Twelve Labs, we are at the forefront of creating innovative multimodal foundation models capable of understanding videos as humans do. Our groundbreaking models have set new benchmarks in video-language modeling, enhancing our capabilities and fundamentally changing how we engage with and interpret diverse media formats.Backed by an impressive $107 million in Seed and Series A funding, our organization enjoys support from prestigious venture capital firms including NVIDIA's NVentures, NEA, Radical Ventures, and Index Ventures, along with visionary leaders in AI such as Fei-Fei Li, Silvio Savarese, and Alexandr Wang. With our headquarters in San Francisco and a significant presence in Seoul, our global reach reflects our dedication to fostering innovation worldwide.We celebrate the individual journeys of our team members, recognizing that our diverse cultural, educational, and life experiences enable us to continuously challenge the status quo. We seek passionate individuals who resonate with our mission and are eager to create a meaningful impact as we expand the horizons of technology to reshape the world. Join us in our quest to revolutionize video comprehension and multimodal AI.About the RoleAs a Senior Backend Software Engineer at Twelve Labs, you will play a pivotal role in developing the server-side infrastructure that powers our new agentic application layer. You'll be an integral part of a small, high-impact team, taking ownership of the essential transition from prototype to a production-ready platform.Travel Requirements: Up to 25% travel to Los Angeles is expected.Candidates should be prepared to travel up to 10% annually for conferences, off-site meetings, and other business-related activities as required. This position may involve participating in on-site interviews and in-person onboarding processes.Your ResponsibilitiesBackend DevelopmentDesign and implement backend services for video processing workflows, including ingestion, transcoding, 4K export, metadata extraction, and timeline operations.Architect scalable and reliable systems to support enterprise-level video workloads using cloud-native infrastructure (AWS, GCP).Develop and optimize APIs that power real-time and asynchronous frontend workflows, focusing on streaming data delivery and long-running job orchestration.Ensure performance and reliability of distributed video processing pipelines, meeting low latency and high throughput requirements.