Senior Backend Software Engineer At Twelve Labs San Francisco jobs in San Francisco – Browse 12,096 openings on RoboApply Jobs

Senior Backend Software Engineer At Twelve Labs San Francisco jobs in San Francisco

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Full-time|On-site|San Francisco

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.

Mar 10, 2026
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company
Full-time|Remote|Remote US

Who We AreAt Twelve Labs, we are at the forefront of innovation, developing state-of-the-art multimodal foundation models that enable video comprehension akin to human understanding. Our models have set new benchmarks in video-language modeling, unlocking more intuitive and expansive capabilities that fundamentally reshape how we engage with and analyze diverse media formats.With an impressive funding of $107 million from Seed and Series A rounds, we are proudly supported by leading venture capital firms, including NVIDIA’s NVentures, NEA, Radical Ventures, and Index Ventures, alongside renowned AI pioneers such as Fei-Fei Li, Silvio Savarese, and Alexandr Wang. Our headquarters in San Francisco, complemented by a significant presence in the APAC region with offices in Seoul, highlights our dedication to spearheading global innovation.As a globally minded organization, we celebrate the uniqueness of each individual’s journey. The diversity in our cultural, educational, and personal experiences empowers us to continuously challenge conventional ideas. We seek passionate individuals driven by our mission, eager to make a difference as we expand the horizons of technology to transform the world. Join us in revolutionizing video understanding and multimodal AI.About the RoleThis position requires an active US Department of Defense or Intelligence Community TS/SCI clearance.We are looking for a distinguished Solutions Engineer to provide direct support to US public sector clients. In this capacity, you will serve as the essential link between Twelve Labs' advanced video understanding platform and critical government operations.You will not merely be a consultant presenting a pitch deck; instead, you will act as a technical owner responsible for delivering production solutions. You’ll analyze an agency's workflow on Monday, design a solution utilizing our video AI models by Wednesday, and deploy a working prototype by Friday.This role merges the independence of a startup engineer with the significance of aiding vital government missions. You will collaborate in small, agile teams and take full ownership of the execution of high-impact projects that serve the public interest.Candidates should be prepared to travel up to 10% annually for conferences, off-site meetings, and other business-related events as required. This position may necessitate participation in on-site interviews and/or completion of in-person onboarding processes.

Mar 20, 2026
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Full-time|On-site|San Francisco

Join Our Team at Pylon Labs!At Pylon, we are on a mission to redefine the B2B post-sales landscape. Our innovative all-in-one platform leverages conversational data and advanced intelligence to empower our clients to manage their operations seamlessly and in real-time.Pylon is proudly backed by top-tier investors including a16z, BCV, General Catalyst, and Y Combinator.Today, over 1000 companies, including notable names like Linear, Cognition (the team behind Devin), Modal Labs, and Incident.io, rely on Pylon for their support and customer success workflows. We are also honored to be featured on the Enterprise Tech 30 List.Our product encompasses a vast problem space, presenting numerous opportunities for impactful contributions. We are eager to bring on board several exceptionally skilled software engineers across various tech stacks.Are You the Right Fit?You prefer coding over meetings and are committed to delivering high-quality work.You possess strong engineering fundamentals, write efficient code, and understand your strengths and areas for growth.You thrive on autonomy and take ownership of your projects.You are located in San Francisco or are willing to relocate, and you value in-person collaboration to foster a vibrant company culture.Familiarity with React, Golang, GraphQL, and AWS is a plus.You will be joining a highly skilled technical team with senior engineers from respected organizations such as Samsara, Affinity, and Airbnb.Perks of Joining Pylon Comprehensive medical, dental, and vision coverage for employees. 401(k) retirement plan with company match. Commuter benefits to ease your travel. Generous parental leave. 14 company holidays and unlimited paid time off. Annual offsite retreats. Free lunch, dinner, and snacks at the office to fuel your day. Fitness stipend to support your well-being.About Pylon LabsFunding: Series B led by a16z and BCV, with a total of $51M raised.Founders: [Details about the founders].

Nov 14, 2025
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Full-time|On-site|San Francisco

About the RoleWe are seeking a dynamic and visionary Director of Engineering, Agentic AI to spearhead the development of Twelve Labs’ innovative agentic platform. This role will focus on enhancing the developer experience through APIs, SDKs, and advanced tooling, empowering developers to create video-native agents. You will also be responsible for flagship user applications that validate and enhance our platform. As the leader, you will oversee the entire journey from agent capabilities to production-level applications, manage multiple engineering teams, and provide strategic direction for our technology stack. This position is ideal for a proactive builder who thrives in a fast-paced AI environment, is technically savvy, and is passionate about delivering high-quality products. You will need to blend effective people leadership with the ability to navigate complex technical and product decisions amidst uncertainty.In This Role, You WillLead Video Agent Platform DevelopmentDrive the evolution of Twelve Labs' video agent platform, including:Video ingestion and indexing for complex agent workflows.Agent orchestration runtime and essential capabilities such as planning, tool utilization, and multi-step reasoning.Development of tools for evaluation, observability, and debugging.Ensure reliability, low latency, and cost-effectiveness in agent workflows.Implement safety measures and guardrails for agent operations.Oversee the complete delivery cycle of flagship user applications, from ideation to launch and subsequent iterations.Manage the platform product interface, including API design and SDK development.Ensure Delivery & ExecutionGuarantee delivery, quality, and operational excellence across your teams.Drive swift, predictable release cycles with structured planning, regular reviews, and retrospectives to foster continuous improvement.Translate product and organizational objectives into clear technical strategies, timelines, and milestones while managing inter-team dependencies.Build and Lead the OrganizationRecruit, mentor, and expand your teams, guiding them through TLMs and Senior/Staff ICs.Attract exceptional talent and continuously elevate the standards. Provide coaching and development opportunities for leaders, manage performance effectively, and establish clear growth pathways for managers and individual contributors.

Feb 27, 2026
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company
Full-time|Remote|Remote US

About UsAt Twelve Labs, we are at the forefront of developing innovative multimodal foundation models that enable video comprehension akin to human understanding. Our models set new standards in video-language modeling, enhancing our capabilities and transforming the way we analyze and interact with diverse media forms.With an impressive $107 million raised in Seed and Series A funding, we are supported by leading venture capital firms, including NVIDIA’s NVentures, NEA, Radical Ventures, and Index Ventures, alongside esteemed AI thought leaders such as Fei-Fei Li and Alexandr Wang. Based in San Francisco, and with a significant presence in APAC through our Seoul office, we are committed to fostering global innovation.We celebrate the distinctiveness of every individual’s journey, embracing the variations in cultural, educational, and personal experiences that challenge conventional thinking. We seek passionate individuals eager to make a difference in reshaping technology and revolutionizing video understanding and multimodal AI.Role OverviewAs a Research Scientist on our Public Sector team, you will play a crucial role in adapting Twelve Labs' video AI solutions for essential government applications. Your focus will be on leveraging our video intelligence technology for classified and government-specific use cases, including model training, fine-tuning, and evaluations aligned with operational needs.You will serve as the principal research scientist for the Public Sector team, connecting our leading-edge multimodal AI research with the unique demands of U.S. federal, defense, and intelligence community clients. This is a unique opportunity to have a direct operational impact and shape the foundational elements of this applied science practice.Key ResponsibilitiesCustomize Twelve Labs' video understanding and multimodal models for government-specific applications, including defense and intelligence analysis.Conduct training and fine-tuning experiments utilizing advanced GPU infrastructure.Develop specialized supervised fine-tuning pipelines for government datasets and annotation workflows.Design and implement rigorous evaluation processes to ensure model efficacy for governmental use.

Mar 24, 2026
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company
Full-time|On-site|San Francisco

Join Pylon Labs: Pioneering B2B Post-Sales SolutionsAt Pylon, we are at the forefront of innovation, creating a comprehensive B2B post-sales support platform that harnesses conversational data and advanced intelligence. Our mission is to empower our clients to manage their operations seamlessly in real-time.With backing from renowned investors such as a16z, BCV, General Catalyst, and Y Combinator, we are proud to support over 1,000 companies, including Linear, Cognition (creators of Devin), Modal Labs, and Incident.io, in streamlining their customer success workflows with our platform. We are also honored to be featured on the Enterprise Tech 30 List.Your Role and ResponsibilitiesDevelop and integrate security features within the product such as audit logging, RBAC, SCIM, SAML, and more.Oversee security review processes, including SOC 2, ISO 27001, HIPAA compliance, and bug bounty programs.Act as the security expert in pre- and post-sales discussions.Facilitate rapid development while ensuring robust security measures are upheld.Lead projects from customer requests through design to deployment.Who You AreYou have experience in building or shipping security features.You have contributed to security and compliance initiatives in a startup or dynamic environment.You are adept at engaging with customers and clarifying technical decisions.You excel when given autonomy, taking ownership of projects, and managing your own tasks.You are located in San Francisco or are open to relocating, enjoy in-person collaboration, and are committed to fostering a positive workplace culture.You are proficient in technologies such as React, Golang, GraphQL, and AWS.You will be joining a skilled technical team of senior engineers from prestigious companies like Samsara, Affinity, and Airbnb.Perks of Working with Us Comprehensive medical, dental, and vision coverage for employees 401(k) retirement savings plan Commuter benefits Generous parental leave 14 company holidays plus unlimited PTO Annual team offsite

Oct 1, 2025
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companyunify logo
Full-time|On-site|San Francisco Office

Join our dynamic team at unify as a Senior Backend Software Engineer, where you will leverage your expertise to design and implement robust backend systems that enhance our product's performance and scalability. You will collaborate closely with cross-functional teams to develop innovative solutions that meet our customers' needs.

Mar 16, 2026
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company
Full-time|On-site|San Francisco

About HappyRobotHappyRobot is revolutionizing the real economy with our AI-native operating system designed to bridge the gap between intelligence and action. By integrating real-time insights with specialized AI capabilities, we empower enterprises to manage complex operations autonomously.Our AI OS continuously accumulates knowledge, optimizes various processes, and adapts over time. We are initially focusing on supply chain and large-scale industrial operations, where speed, resilience, and ongoing improvement are paramount—allowing human resources to concentrate on strategic and creative high-value tasks.Discover more about our vision in our Manifesto. So far, HappyRobot has successfully raised $62M in funding, including a recent $44M in Series B financing as of September 2025. Our esteemed investors include Y Combinator (YC), Andreessen Horowitz (a16z), and Base10, who share our mission to transform enterprise operations. We are leveraging this investment to build a top-tier team of individuals with unwavering motivation, exceptional problem-solving capabilities, and a drive to exceed limits in a dynamic working environment. If this resonates with you, we want you at HappyRobot.About The RoleAt HappyRobot, our Senior Backend Software Engineers are entrusted with significant components of our product and infrastructure, overseeing projects from inception to deployment. We are seeking passionate builders who thrive in uncertain environments, value craftsmanship, and desire genuine ownership of their creations.

Dec 20, 2025
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company
Full-time|On-site|San Francisco

Join Us at Pylon as a Software Engineer - AI AgentsAt Pylon, we are revolutionizing the B2B post-sales landscape. Our comprehensive platform, driven by conversational data and advanced intelligence, empowers businesses to operate seamlessly in real-time.Supported by notable investors such as a16z, BCV, General Catalyst, and Y Combinator, we proudly serve over 1000 companies, including Linear, Cognition, Modal Labs, and Incident.io. Our inclusion in the Enterprise Tech 30 List shines a light on our impact.With a vast problem domain, we are eager to expand our team of talented software engineers to tackle the exciting challenges ahead. Your contributions will directly influence the development of our innovative solutions.Your RoleDevelop and implement the next generation of AI features at Pylon, swiftly adapting based on user feedback.Enhance the quality and efficiency of existing AI functionalities.Are You the Right Fit?If you prefer coding over meetings and value productivity, you might fit right in.Strong engineering fundamentals and efficient coding skills are essential.Autonomy excites you; you enjoy owning details and managing your projects.Located in San Francisco or willing to relocate? We value in-person collaboration as we cultivate a vibrant team culture.Our tech stack includes React, Golang, GraphQL, and AWS.Join a team of experienced engineers from prestigious companies like Samsara, Affinity, and Airbnb.What We Offer Comprehensive medical, dental, and vision coverage for employees 401(k) retirement plan Commuter benefits Parental leave 14 company holidays plus unlimited PTO Annual offsite retreats Meals and snacks provided at the office Fitness stipend

Sep 12, 2025
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companyKiddom logo
Full-time|On-site|San Francisco

Join Kiddom as a Senior Backend Software EngineerAt Kiddom, we are revolutionizing the education landscape by providing a platform that champions equity and growth for all students. Our innovative approach integrates top-tier instructional materials with engaging digital learning tools, allowing schools and districts to take charge of their curriculum. With our exceptional curriculum management capabilities, we deliver personalized learning experiences that cater to the specific needs and aspirations of local communities. Our robust data insights empower educators and leaders to enhance instructional strategies, improve school programs, and foster professional development.We are seeking a dedicated Senior Backend Software Engineer to join our dynamic team, where you will play a crucial role in creating the next generation of scalable backend services. Your responsibilities will include the design, development, and maintenance of high-performance systems that underpin our applications.The ideal candidate will possess significant experience in backend technologies and system architecture, coupled with a genuine passion for addressing complex challenges faced by our users. Mentoring fellow engineers and sharing your expertise will be key aspects of this role. A strong affinity for education, an understanding of teachers' needs, exceptional product insight, and a commitment to Kiddom's mission and vision are essential.

Aug 25, 2025
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companyAstranis logo
Full-time|$150K/yr - $200K/yr|On-site|San Francisco

Astranis is at the forefront of satellite technology, constructing advanced satellites for high orbits that extend humanity's capabilities into the solar system. Our satellites deliver dedicated, secure networks to a diverse clientele, including major corporations, government entities, and the US military. With five satellites successfully in orbit and numerous launches on the horizon, we are addressing a robust pipeline of over $1 billion in commercial contracts.As a trusted satellite communications partner, Astranis meets the rigorous demands for uptime, data security, network visibility, and tailored solutions. With over $750 million raised from distinguished investors like Andreessen Horowitz, Blackrock, and Fidelity, we have a thriving team of 450 engineers and innovators. Our operations are conducted from our expansive 153,000 sq. ft. headquarters located in Northern California, USA.Senior Software Engineer - BackendJoin our dynamic Platform team as a Software Engineer, where your role will involve designing and developing services that autonomously manage satellites, monitor telemetry for anomalies, and provide real-time situational awareness to ensure the safety and operational integrity of our fleet. You will play a crucial role in building the foundational components and services that empower our software organization, enabling all teams to operate more efficiently and reliably.In this position, you will help shape the core software that our satellites rely on for flawless performance.This role encompasses contributions to both our commercial and US government initiatives.Key ResponsibilitiesDevelop and implement high-performance, reliable, mission-critical software for satellite command operations.Take full ownership of features, collaborating across backend and infrastructure.Work with interdisciplinary teams to define software requirements, architectures, and designs.Continuously evaluate the evolving technology landscape and advocate for innovations to enhance our systems.Mentor colleagues, share insights, and elevate the technical standards within the team.

Mar 9, 2026
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company
Full-time|On-site|San Francisco

Join Us at Pylon Labs: Shaping the Future of B2B Post SalesAt Pylon Labs, we are revolutionizing the B2B post-sales support landscape with our all-in-one platform that leverages conversational data and sophisticated intelligence. Our mission is to empower businesses to operate seamlessly and in real-time.We are proudly backed by top investors including a16z, BCV, General Catalyst, and Y Combinator, and currently support over 1000 companies, including Linear, Cognition (creators of Devin), Modal Labs, and Incident.io, in managing their support and customer success workflows.Recognized on the Enterprise Tech 30 List, our product covers a vast problem space, offering numerous opportunities for innovation and ownership. We are excited to welcome several talented software engineers to our dynamic team.Your Role: What You'll DoDevelop and enhance the infrastructure that drives Pylon's AI capabilities, including prompt execution and search infrastructure.Elevate the observability of LLMs through comprehensive AI evaluations, and prepare Pylon's AI for scalable growth.Enhance the quality and performance of our AI features.Are You the Right Fit?You prefer focusing on building and delivering code over excessive meetings.You possess solid engineering fundamentals, code efficiently, and are aware of your strengths and areas for growth.You excel in autonomous environments where you can manage your own projects and details.You are located in San Francisco or willing to relocate, enjoy in-person collaboration, and are committed to fostering a vibrant company culture.Familiarity with React, Golang, GraphQL, and AWS is a plus.Join a team of seasoned engineers from prestigious companies such as Samsara, Affinity, and Airbnb.Our Benefits Comprehensive medical, dental, and vision coverage for employees 401(k) retirement plan Commuter benefits Parental leave 14 company holidays plus unlimited PTO

Sep 12, 2025
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companyMultiply Labs logo
Full-time|On-site|San Francisco

About Multiply LabsMultiply Labs is an innovative startup headquartered in San Francisco, California, backed by esteemed investors in the tech and life sciences sectors, including Casdin Capital, Lux Capital, and Y Combinator. We are transforming the landscape of cell therapy manufacturing through the development of advanced robotic systems that automate and scale the production of these vital treatments. Our robotic solutions enable biopharmaceutical companies to produce cell therapies efficiently, minimizing alterations to their existing workflows while significantly lowering regulatory hurdles and risks. Unlike traditional methods that can cost upwards of $1 million per patient, our robotics make these groundbreaking therapies more accessible and affordable for those who need them.To learn more about our work and to watch our robots in action, please visit www.multiplylabs.com and connect with us on LinkedIn. Additionally, you can review our latest peer-reviewed research that demonstrates the statistical equivalence between manual and automated cell expansion processes at cytotherapy.org.About the RoleWe are seeking an experienced Senior / Staff Software Engineer to join our dynamic Software Engineering Team. In this pivotal role, you will serve as a technical leader, responsible for developing the intelligent software that drives our automated manufacturing systems. Your work will bridge the fields of robotics and biopharma, allowing you to collaborate with a talented team as you tackle complex challenges. This position is ideal for a dedicated, hands-on engineer passionate about creating robust systems that have a meaningful impact on patient lives.

Dec 18, 2025
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company
Full-time|Remote|Remote US

About UsAt Twelve Labs, we are at the forefront of innovation, creating advanced multimodal foundation models that enable machines to understand videos in a human-like manner. Our groundbreaking approach to video-language modeling is setting new benchmarks, enhancing our ability to analyze and interact with diverse media formats.With an impressive $107 million in funding from leading venture capital firms including NVIDIA’s NVentures, NEA, Radical Ventures, and Index Ventures, as well as visionary AI leaders like Fei-Fei Li and Alexandr Wang, we are strategically positioned to drive global innovation. Our headquarters in San Francisco, along with a significant presence in Seoul, illustrates our commitment to reshaping the future of technology.We celebrate the unique journeys of every individual and believe that our diverse backgrounds fuel our creativity and innovation. We invite passionate individuals who share our mission to join us in transforming video understanding and multimodal AI.Role OverviewUnlike typical video engineering roles that focus primarily on enhancing human playback, at Twelve Labs, we engineer video for machine comprehension. This unique approach prioritizes AI model performance over mere perceptual quality. As the Principal Software Engineer for Video Engineering, you will architect and implement our video processing pipelines, overseeing the entire journey from byte ingestion through to playback. Your work will be pivotal in ensuring our systems are efficient, cost-effective, and tailored for AI-driven video intelligence at scale.Your ResponsibilitiesEnd-to-End Ownership: Lead the design and execution of video pipelines, covering ingestion, decoding, chunking, storage, and playback, applicable to both batch and streaming modes.Codec Expertise: Guide the development of decoding strategies, container format management, and codec implementations, ensuring optimal performance for various video types.

Mar 27, 2026
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company
Full-time|Remote|Remote US

About UsAt Twelve Labs, we are at the forefront of developing innovative multimodal foundation models capable of understanding videos in a human-like manner. Our state-of-the-art models are setting new benchmarks in video-language modeling, allowing for more intuitive interactions and transformative media analysis.With an impressive $107 million in Seed and Series A funding, we have garnered support from leading venture capital firms like NVIDIA’s NVentures, NEA, Radical Ventures, and Index Ventures, as well as esteemed AI pioneers such as Fei-Fei Li, Silvio Savarese, and Alexandr Wang. Our headquarters are in San Francisco, complemented by a strong presence in APAC, particularly in Seoul, highlighting our commitment to global innovation.We embrace the individuality of each team member’s journey. The diversity of our cultural, educational, and experiential backgrounds fuels our drive to challenge the norm. We seek passionate individuals eager to contribute to our mission and make a significant impact as we redefine the landscape of technology. Join us in revolutionizing video comprehension and multimodal AI.Role OverviewAs a Senior Staff Software Engineer, you will take charge of the infrastructure and integration layer that ensures Twelve Labs models are seamlessly accessible on partner platforms. Your responsibilities will encompass everything beyond the models, including packaging, validating, deploying model containers, designing API surfaces for various platforms, routing requests, and maintaining production reliability across diverse cloud environments.You will collaborate closely with our Science, Product, and ML Engineering teams to align model and product roadmaps for successful platform integrations. Your expertise in external model orchestration will be pivotal; you will need to comprehend model component functionalities to make informed integration decisions, although model optimization will not be part of your role. Your contributions will significantly enhance our capacity to reliably deliver new model versions and features to users across all platforms.Willingness to travel up to 10% annually for conferences, off-site meetings, and other business-related events is expected. Participation in on-site interviews and/or in-person onboarding processes may also be required.

Mar 27, 2026
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companyDatabricks logo
Full-time|$166K/yr - $225K/yr|On-site|San Francisco, California

Join Databricks as a Senior Backend Software Engineer and contribute to solving some of the world's most challenging problems. We empower data teams through our state-of-the-art data and AI infrastructure platform, enabling businesses to leverage deep data insights for transformative growth. At Databricks, founded by engineers and driven by a customer-first philosophy, we tackle technical challenges with enthusiasm — from designing next-gen UI/UX for data interfacing to scaling our services across millions of virtual machines.In this role, you will collaborate closely with your team to develop scalable infrastructure and innovative products for the Databricks platform.

Jan 30, 2026
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companySpeak logo
Full-time|On-site|San Francisco

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.

Jul 16, 2024
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companySemgrep logo
Full-time|$160K/yr - $207K/yr|Hybrid|San Francisco Office

About SemgrepSemgrep stands at the forefront of code security, enabling developers to innovate seamlessly. Our platform empowers teams to identify, flag, and address real vulnerabilities before deployment, with security solutions that evolve alongside their coding efforts. By securing code during its creation, Semgrep provides essential guardrails, allowing developers to work swiftly while ensuring their safety. With a focus on integration, Semgrep offers visibility, control, and confidence to security teams, making it an indispensable tool for modern developers. Our AI-driven approach minimizes false positives and highlights actionable vulnerabilities, with validation from 95% of security experts across over 6 million findings. In our mission to eliminate false positives, our AppSec teams experience an 80% reduction in false positives across Code and Supply Chain, significantly alleviating backlog issues.Founded in San Francisco and supported by prestigious investors such as Menlo Ventures, Felicis Ventures, Lightspeed Venture Partners, Redpoint Ventures, and Sequoia Capital, Semgrep is recognized by Gartner in Application Security Testing and trusted by leading companies including Snowflake, Dropbox, and Figma. Discover more about us at semgrep.dev.About the RoleAs a Senior Backend Engineer, you will be instrumental in enhancing our backend and infrastructure systems to ensure a robust and efficient user experience for all our customers. You will collaborate with fellow engineers to design and develop APIs, data models, and services that power Semgrep’s scalable products. A solid understanding of databases, query optimization, and distributed systems is essential, as is the ability to integrate third-party services into existing first-party code.Our technology stack includes Typescript and React on the Frontend and Python, Flask, and SQLAlchemy on the Backend, deployed using Kubernetes and hosted on AWS. While professional experience with these technologies is preferred, we welcome candidates who are eager to learn them quickly!This position is hybrid, requiring at least 3 days a week in our San Francisco, New York, Boston, or Denver offices, depending on your team. We also consider remote work for exceptional candidates.CompensationThe estimated starting annual salary for this role ranges from $160,000 to $207,000 USD. The actual salary will be determined 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.

Feb 2, 2026
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companyCasap logo
Full-time|On-site|San Francisco (HQ)

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.

Jul 10, 2025
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company10alabs logo
Full-time|On-site|San Francisco

Join 10alabs as a Backend Software Engineer where you will play a vital role in designing and developing robust backend systems. You will work closely with cross-functional teams to create scalable and efficient software solutions that meet the needs of our clients. If you are passionate about technology and eager to tackle complex challenges, we want to hear from you!

Mar 27, 2026

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