Software Engineer Intern - Summer 2026

Join Multiply Labs as a Software Engineering InternAt Multiply Labs, we are at the forefront of innovation in the biotechnology sector, located in the vibrant city of San Francisco, California. With backing from renowned investors including Casdin Capital, Lux Capital, and Y Combinator, our vision is to create the most advanced robotic systems that make life-saving therapies accessible to everyone.We are transforming the landscape of cell therapy manufacturing with sophisticated robotics that streamline production processes. Our technology enables biopharma companies to manufacture cell therapies efficiently and affordably, tackling the traditional challenges of high costs and regulatory hurdles. By leveraging our robotics, we strive to lower the costs of these groundbreaking treatments, which can otherwise exceed $1 million per patient.To explore more about our mission and see our robots in action, visit us at www.multiplylabs.com and connect with us on LinkedIn.About the InternshipWe are seeking enthusiastic Software Engineering Interns to become a part of our dynamic team. In this role, you will contribute to developing production-ready software that will play a pivotal role in the future of personalized medicine and cell therapy manufacturing. Ideal candidates are strong problem solvers, motivated students eager to learn, and excited about the unique experience of working within a fast-paced startup environment.

Join Ironclad, the premier AI contracting platform that revolutionizes the way agreements are handled. Our platform accelerates contract processing, delivers instant insights, and empowers users with unparalleled control. Whether you are buying or selling, Ironclad integrates the entire process into a single intelligent platform, ensuring leaders maintain the visibility required to stay ahead of the curve. That's why leading organizations, including OpenAI, the World Health Organization, and the Associated Press, trust Ironclad to enhance their business operations.Recognized consistently as an industry leader, Ironclad has earned accolades such as being a Leader in both the Forrester Wave and Gartner Magic Quadrant for Contract Lifecycle Management. We are proud to be recognized by Fortune as a Great Place to Work and listed among Fast Company’s Most Innovative Workplaces. Additionally, Ironclad has been featured in Forbes’ AI 50 and Business Insider’s list of Companies to Bet Your Career On. We are backed by top-tier investors including Accel, Y Combinator, Sequoia, BOND, and Franklin Templeton. To learn more, visit www.ironcladapp.com or follow us on LinkedIn.This position operates in a hybrid model, requiring office attendance at least twice a week on Tuesdays and Thursdays for collaboration. Additional in-office days may be necessary for team or company events.Engineering @ IroncladAs a Software Engineer Intern at Ironclad, you will collaborate with various teams to identify and tackle business challenges by designing, building, and verifying innovative solutions. Your work will contribute to a platform that empowers legal teams to scale their operations effectively, modernizing a profession that has remained largely unchanged for two millennia.You will engage with a modern technology stack that includes TypeScript, React, Node.js, Java, and Docker containers in Kubernetes on Google Cloud Platform. While experience with these specific technologies is advantageous, it is not a requirement. We prioritize a collaborative work environment that fosters inclusivity and allows interns to contribute to real projects while receiving meaningful mentorship, rather than engaging in trivial tasks.About the roleWe are seeking enthusiastic Software Engineer Interns eager to learn and make a tangible impact by shipping real features. You will be integrated into a Product Engineering Team (such as AI, core product, workflow, or platform) and will work on projects that directly influence our customers worldwide.You will partner closely with full-time engineers, product managers, designers, and quality engineers to fully understand user problems and contribute to meaningful solutions.

P-97 At Databricks, we are on a mission to fundamentally simplify the entire data lifecycle—from ingestion and ETL to BI and ultimately to ML/AI—through a unified platform. We envision a future where the traditional data warehouse architecture is transformed by an innovative architectural model known as the Lakehouse (CIDR 2021 paper). This open platform merges data warehousing with advanced analytics, effectively addressing critical challenges such as data staleness, reliability, total cost of ownership, data lock-in, and limited use-case support. A key component in realizing this vision is the development of a next-generation decoupled query engine and structured storage system that surpasses the performance of specialized data warehouses while maintaining the flexibility of general-purpose systems like Spark™ to cater to a wide range of workloads, from ETL processes to data science applications. As a vital member of our team, you will engage in the design and implementation of these next-generation systems that aim to leapfrog the current state-of-the-art in the following areas: Query compilation and optimization Distributed query execution and scheduling Vectorized execution engine Data security Resource management Transaction coordination Efficient storage structures (encodings, indexes) Automatic physical data optimization

We appreciate your interest in joining the Uncountable Engineering team!Position OverviewUncountable is on the lookout for enthusiastic interns who are eager to embark on a journey in full-stack software engineering. Our mission is to transform the landscape of industrial research and development. We seek passionate engineers ready to contribute to the creation of an advanced development platform utilized by Fortune 500 companies.Potential ProjectsYou'll have the opportunity to design databases for enhanced analytical capabilities and develop innovative interfaces and views that empower scientists in managing experiments.EligibilityWe will only consider candidates who are graduating within a year of the internship.Compensation: $6,000 per month

ABOUT BASETENAt Baseten, we empower cutting-edge AI companies, including Cursor, Notion, OpenEvidence, Abridge, Clay, Gamma, and Writer, to achieve mission-critical inference. By merging advanced AI research with flexible infrastructure and intuitive developer tools, we facilitate the deployment of innovative AI models into production. Having recently secured a $300M Series E funding round from esteemed investors like BOND, IVP, Spark Capital, Greylock, and Conviction, we are on a rapid growth trajectory. Join our team and contribute to building a platform that engineers rely on to launch AI products successfully.THE ROLEAs a key member of Baseten's Platform Team, you will play a crucial role in developing internal infrastructure to support our engineering division. While our product offers infrastructure for AI advancements, your primary focus will be on crafting robust internal systems that enhance productivity, collaboration, and work quality across engineering teams, leveraging exceptional tools, efficient workflows, and resilient development settings.If you have a passion for elegant solutions—such as streamlined monorepos, rapid CI pipelines, and well-designed shared libraries—you will excel at Baseten.RESPONSIBILITIESDevelop a range of tools customized to meet the diverse needs of engineering teams.Enhance monorepo functionality and create project templates to ensure consistency and efficiency.Design and implement shared libraries focused on system observability.Optimize the speed, reliability, and thoroughness of our CI pipelines.Assist in designing and maintaining Terraform modules for effective infrastructure management.Provide innovative solutions to improve visibility within continuous delivery (CD) processes.Proactively support engineering teams, ensuring they have the necessary resources and tools for maximum productivity.REQUIREMENTSProficiency in Go and/or Python programming languages.Experience with Kubernetes and Docker tools (e.g., Helm, Docker, Kubernetes).Demonstrated experience managing and working with large monorepos.Strong problem-solving skills with an emphasis on efficient software delivery.Familiarity with CI/CD methodologies and tools.Excellent communication and collaboration skills.

P-188 At Databricks, we are on a mission to revolutionize the data lifecycle—from ingestion and ETL to business intelligence and advanced machine learning. Our vision is centered around a unified platform that replaces the conventional data warehouse architecture with a cutting-edge Lakehouse model (CIDR 2021 paper). This innovative architecture aims to tackle significant challenges such as data staleness, reliability, total cost of ownership, data lock-in, and limited support for diverse use cases. A pivotal element of achieving this vision is the development of the next generation of decoupled query engines and structured storage systems that can surpass the performance of specialized data warehouses while retaining the versatility of general-purpose systems like Apache Spark™. This capability is essential for supporting a wide range of workloads, from ETL processes to complex data science applications. As a key member of this team, you will engage in one or more of the following areas to design and implement systems that set new standards in the industry: Query compilation and optimization Distributed query execution and scheduling Vectorized execution engine Data security Resource management Transaction coordination Efficient storage structures (encodings, indexes) Automatic physical data optimization

About Our TeamAt OpenAI, our Applications Engineering team is pivotal in crafting and enhancing our core productivity ecosystem. We are not just custodians of SaaS solutions; we develop tailored tools, integrations, and automation processes that address challenges that off-the-shelf software cannot. Our deep technical expertise allows us to bridge gaps between teams and operationalize applications for scalability, providing secure, seamless, and innovative experiences for our employees. We thrive on designing and implementing custom solutions that streamline workflows, reduce friction, and enhance productivity, enabling teams to concentrate on their primary missions.About the PositionAs a Software Engineer focused on Internal Applications for Enterprises, your primary responsibility will be to elevate employee technology services through automation, Infrastructure-as-Code (IaC), and the creation of advanced workforce tools. You will utilize OpenAI's models to optimize identity and access management (IAM) systems, develop applications and dashboards for internal users, and automate complex workflows. This position entails designing and implementing efficient, secure, and scalable solutions, including intelligent Slack bots and integrations that bolster operational efficiency and enhance user experience.We are looking for innovative individuals who are passionate about harnessing automation and software engineering to tackle complex workforce technology challenges. A robust background in infrastructure automation, cloud services, and a thorough understanding of identity management solutions is essential. Your ability to construct scalable and resilient systems, combined with a problem-solving orientation, will be critical to your success in this role.Your Responsibilities Will Include:Designing, building, and maintaining secure, scalable, and high-performance workforce technology infrastructure, automation workflows, and customized tools to enhance the OpenAI employee experience.Delivering essential IT efficiencies and automation through custom software development and first-party tools to improve technology service delivery.Utilizing modern Infrastructure-as-Code (IaC) practices, developing GitOps-driven solutions to manage technology workflows at scale.Creating and managing CI/CD pipelines for corporate infrastructure, ensuring deployment to progressively tested environments across multiple clouds (Azure, AWS, GCP).Developing scalable internal tools and dashboards to enhance workflows and improve visibility.

About Atomic SemiAtomic Semi is pioneering a compact and rapid semiconductor fabrication facility. Our goal is to harness today’s technology to build innovative solutions with streamlined processes. We are committed to creating our own tools to facilitate swift iterations and enhancements.We are assembling a small team of exceptional, hands-on engineers across various disciplines, including mechanical, electrical, hardware, computer, and process engineering. Our team will take ownership from atomic-level designs to complete architectural solutions. We are optimistic about the future and eager to push the boundaries of technology.We believe that smaller, faster, and self-built solutions are superior. Our lab is equipped with advanced tools such as 3D printers, a variety of microscopes, e-beam writers, and general fabrication equipment, and we are ready to invent whatever is missing along the way.Atomic was founded by Sam Zeloof and Jim Keller. Sam is renowned for his garage-made chips, while Jim brings over 40 years of leadership experience in the semiconductor industry.About the RoleWe are seeking an Automation Software Engineering Intern for the upcoming fall semester, starting in September. We prefer a commitment of 4 to 8 months. As part of an integrated engineering team, you will engage in building semiconductor fabrication equipment, tackling intriguing engineering challenges.Our small size enables interns to undertake significant responsibilities, contributing to mission-critical projects. You will enjoy substantial autonomy on interdisciplinary initiatives that enhance our semiconductor fabrication processes and improve robot efficiency. Ideal candidates should have a background in motor controllers, path planning, and trajectory control.We prioritize rapid prototyping and testing—aiming to build and verify solutions within days or weeks, not months. Therefore, a portfolio showcasing your work (such as a GitHub link) is required to apply, demonstrating your software engineering skills and curiosity.

About Multiply LabsMultiply Labs stands at the forefront of innovation in San Francisco, California, backed by premier tech and life science investors including Casdin Capital, Lux Capital, and Y Combinator. Our mission is to create unparalleled robotic systems that make cutting-edge life-saving therapies accessible to everyone.We are transforming the landscape of cell therapy manufacturing through the development of advanced robotics designed to automate and scale production of these essential treatments. Our robots enable biopharma companies to efficiently produce cell therapies while minimizing disruption to their existing processes, thereby reducing regulatory challenges and risks. Traditional methods are often laborious and costly, with expenses exceeding $1 million per patient; our robotics-driven solutions aim to democratize these life-changing therapies, making them more affordable for those in need.For more insights and videos showcasing our robots, visit us at www.multiplylabs.com and follow us on LinkedIn.About the RoleWe are seeking passionate Robotics Software Engineering Interns to become integral members of our collaborative team. You will contribute to the development of production-ready software that will play a pivotal role in shaping the future of personalized medicine and cell therapy manufacturing systems. This opportunity is ideal for motivated students who are eager to solve complex problems and gain firsthand experience in an early-stage startup environment.

Kira creates AI-native tools that support educators in building content, assessing student work, and providing feedback at scale. Schools, districts, and universities already rely on Kira’s platform. As an early-stage company, Kira values team members who deliver real-world results and take ownership of their work. Internship Overview This is a full-stack Software Engineering Internship based in San Francisco for Summer 2026. Interns work on production systems used by students and teachers, not just side projects. During the 12-week program, each intern leads a product feature from design through deployment. The role is a good fit for those who work independently and set high standards for themselves. Sample Projects AI-powered grading and feedback tools Dashboards and workflow interfaces for students and educators Internal tools to support curriculum and operations teams Infrastructure for LLM-based features, including evaluations and prompt iteration Tech Stack Frontend: TypeScript, React, Next.js Backend: Node, Python Data: APIs, databases, system integrations What You Will Do Take ownership of a scoped project with a clear user goal, from planning to launch Write production-quality code that goes through review and testing Join design discussions and participate in code reviews Collaborate with product and design teams to clarify requirements and evaluate trade-offs Debug and fix real issues to improve system reliability and performance Work on AI-driven features as part of your project Requirements Ability to work independently and demonstrate strong technical skills Currently enrolled in an undergraduate Computer Science or related program and returning to school in Fall 2026

Join Baseten as a Software Engineer focused on Billing and Internal Tooling, where you will play a crucial role in developing and enhancing our internal systems. You will collaborate with cross-functional teams to create efficient billing solutions and streamline internal processes. Your contributions will directly impact our operational efficiency and customer satisfaction.

About Atomic SemiconductorAtomic Semiconductor is revolutionizing the semiconductor fabrication industry by developing a compact and efficient semiconductor fab.Leveraging current technology and innovative simplifications, we aim to create our own tools to accelerate the production process.Our team is composed of outstanding, hands-on engineers with expertise in mechanical, electrical, hardware, computer, and process engineering. We take pride in managing the entire stack, from atomic structures to architectural designs.Our philosophy is simple: smaller and faster is better, and creating our own solutions is key to our success.We believe our talented team and well-equipped lab can produce anything. Our facilities include 3D printers, a variety of microscopes, e-beam writers, and general fabrication tools, with a commitment to inventing whatever we find lacking.Founded by notable figures in the semiconductor field, Sam Zeloof and Jim Keller, we are driven by a shared vision for the future of technology.Role OverviewWe are seeking Embedded Software Engineering Interns for the upcoming fall term, starting in September. The internship is designed for a commitment of 4 to 8 months. You will collaborate with an integrated engineering team focused on creating semiconductor fabrication equipment, tackling intriguing engineering challenges. Your role will involve developing high-performance tools that meet stringent requirements across various disciplines, including structures, optics, fluids, heat transfer, physics, and chemistry. A strong familiarity with end-to-end system bring-up will be beneficial.We prioritize rapid development cycles, aiming to build and test solutions within days or weeks rather than months. To apply, please provide a portfolio (such as your GitHub) showcasing your work and demonstrating your software engineering skills and curiosity.Key ResponsibilitiesDevelop real-time Linux applications and microcontroller firmware in Rust for the control of semiconductor fabrication equipment.Create backend systems for capturing and analyzing semiconductor process data.

Astranis is at the forefront of satellite technology, crafting advanced satellites that extend humanity’s reach into the solar system. Our satellites are designed to deliver dedicated and secure networks to a diverse range of clients, including large enterprises, governmental bodies, and the U.S. military. With five satellites successfully launched and a robust pipeline of more than $1 billion in commercial contracts, we are poised for significant growth.As a trusted partner in satellite communications, we cater to clients who demand high standards for uptime, data security, and network customization. Our impressive funding of over $750 million from top-tier investors like Andreessen Horowitz, Blackrock, and Fidelity allows us to employ a dedicated team of 450 innovative engineers and entrepreneurs at our state-of-the-art 153,000 sq. ft. headquarters in Northern California, USA.Backend Software Engineer Intern - Summer 2026Join our Platform team as a Software Engineer Intern, where you will design and develop services that autonomously control satellites, monitor telemetry for anomalies, and provide real-time situational awareness to ensure the safety and connectivity of our fleet. Your work will also encompass building critical components and services that empower our software organization, enabling all teams to operate more swiftly and reliably.This internship presents an exciting opportunity to contribute to both our commercial and U.S. government initiatives. Internships at Astranis typically last for twelve weeks and are tailored for students currently enrolled in a four-year university program. If you have already graduated, we invite you to apply for our Associate Engineer positions.

Sieve is an AI research lab based in San Francisco, focused on large-scale video data. The team builds and maintains infrastructure capable of handling exabyte-scale video, while developing advanced methods for video understanding. Sieve also curates extensive and diverse datasets to support new approaches in video modeling. With video now accounting for a significant portion of internet traffic, the company aims to remove barriers to high-quality training data for fields like creativity, communication, gaming, AR/VR, and robotics. The company recently completed its Series A and is backed by investors including Matrix Partners, Swift Ventures, Y Combinator, and AI Grant. Sieve has worked with leading AI labs and continues to grow, generating $XXM last quarter with a small team of 15. Role overview The Software Engineering Intern at Sieve works across the stack to help build and scale data pipelines that deliver video datasets to clients. This role involves taking full ownership of projects, from sourcing and curating video data to developing machine learning filters, improving system efficiency, and building internal dashboards for quality assurance and delivery. The work directly impacts the timely delivery of high-quality data to customers. What you will do Build and scale data pipelines for delivering video datasets Source and curate video data for a range of applications Develop and refine machine learning filters to enhance data quality Improve system efficiency and reliability Create internal dashboards for quality assurance and delivery tracking Who thrives here This internship is well suited to those who enjoy solving complex technical problems, want to collaborate directly with customers at the forefront of Video AI, and seek meaningful challenges in a high-performance setting.

About UsAt Hayden AI, we are dedicated to leveraging the capabilities of computer vision to revolutionize how transit systems and government agencies tackle real-world challenges.Our innovative mobile perception system enhances transit operations, improves street safety, and contributes to a sustainable future through advanced technologies for bus lane enforcement and transportation optimization.About the Platform TeamThe Platform team forms the backbone of Hayden's operations, ensuring reliability and scalability. This team is tasked with the seamless execution of perception algorithms across dedicated edge hardware and public cloud infrastructures. They manage event processing from device capture to partner delivery, while overseeing fleet health, security, compliance, data governance, and privacy.About the RoleAs a Software Engineering Intern on the Platform Team at Hayden AI, you'll play a crucial role in developing the systems that underlie our products. This is a hands-on position where you will directly contribute to the infrastructure, services, and data pipelines that ensure the reliable operation of our perception algorithms across both edge devices and cloud environments.You will work closely with senior engineers to enhance the systems that manage data flow from field devices through to event processing and delivery to our partners. Your responsibilities may include cloud services, backend systems, fleet health monitoring, data tooling, and platforms that bolster security, compliance, and governance.This opportunity is perfect for individuals eager to learn about the functioning of large-scale AI systems in production, from edge hardware to cloud infrastructure, and who are passionate about tackling reliability, performance, and scalability challenges.You will acquire hands-on experience in designing, building, testing, and deploying production-ready systems while gaining insights into the operations of high-performing infrastructure teams.This internship is based in San Francisco and operates on a hybrid schedule, requiring at least three days in the office each week.

Join Notion Labs Inc. as a Software Engineer Intern for the Fall 2026 semester! This is an exciting opportunity to work in a dynamic environment where you will contribute to innovative projects and gain hands-on experience with cutting-edge technologies.As an intern, you will collaborate with our talented engineering team to develop and improve our software solutions. You'll have the chance to enhance your skills in programming, problem-solving, and teamwork while making a real impact in our organization.

Join Scale AI as a Senior Software Engineer where you will play a crucial role in designing, developing, and managing secure and scalable infrastructure that empowers our team to excel in their work. You will collaborate with an innovative, agile, and solution-focused team dedicated to automating processes in identity and access management, endpoint management, and our extensive SaaS ecosystem. The right candidate will harness a variety of internal and external platforms to create applications, Slackbots, and dashboards for internal users while optimizing intricate workflows through automation. Your contributions will significantly enhance the operational efficiency of all General and Administrative teams within the company.Your Impact:As a full-stack engineer (60% backend / 40% frontend), you’ll collaborate with your team to create exceptional tools and applications for both internal use and external partners.You will be responsible for designing, developing, testing, and supporting full-stack applications on cloud-native distributed systems.You will establish real-time integrations with SaaS platforms across the organization.Develop a comprehensive quality framework/unit tests to ensure product performance, quality, and load handling, while effectively debugging and identifying system issues.Engage with broader teams, participate in engineering councils, conduct code reviews, and enhance our delivery processes.Work closely with the IAM team to manage cloud-based identity (Okta) and access controls, ensuring adherence to security protocols and standards for internal applications.Collaborate cross-functionally to identify opportunities for technological improvements and implement self-service solutions.

Atomic Semi is developing a compact semiconductor fabrication facility in San Francisco. The team brings together mechanical, electrical, hardware, computer, and process engineering. Leadership includes Sam Zeloof, recognized for his garage chip manufacturing, and Jim Keller, who has over four decades in the semiconductor field. The company values building small, fast, and self-made solutions. The lab is equipped with 3D printers, advanced microscopes, e-beam writers, and a variety of fabrication tools. When a needed tool is missing, the team creates it themselves. Role overview This fall internship runs for 4 to 8 months, starting in September, and is based onsite at the San Francisco office. The Infrastructure Software Engineering Intern will contribute to designing, building, deploying, and maintaining the on-premises backend infrastructure that supports semiconductor fabrication. Expect hands-on involvement across all layers of backend infrastructure and services. How the team operates Infrastructure at Atomic Semi is intentionally minimal and easy to understand, with a close connection to physical hardware. The technology stack uses bare-metal Linux, systemd, and single-file binaries. The team avoids Docker, cloud services, and Kubernetes. Most coding is done in Rust and Go, with some Python as needed. Fast iteration is important. The team aims to build and test solutions in days or weeks rather than months. Requirements Hands-on experience building real-world applications Interest in performance engineering Ability to learn new technical domains quickly Motivation to develop complex features from scratch Application instructions Include a portfolio or GitHub link with your application to highlight previous work.

About UsAt Hayden AI, our goal is to leverage computer vision technology to revolutionize how transit systems and government agencies tackle real-world challenges.Our cutting-edge mobile perception systems facilitate bus lane enforcement, transportation optimization, and more, enabling clients to enhance transit efficiency, improve street safety, and promote sustainable practices.About the Perception TeamThe Perception Team at Hayden AI specializes in developing and refining AI algorithms that drive our mobile enforcement systems, analyzing video and image data to identify traffic violations, parking infractions, and other urban compliance issues. This collaborative team works closely with both cloud and device engineering to create and implement perception pipelines that provide actionable insights for our clients.About the RoleAs a Software Engineering Intern focusing on Perception at Hayden AI, you will be integral to the development of AI systems that support our mobile enforcement platform. You will engage with computer vision and machine learning models to process real-world video and image data for detecting traffic violations and urban compliance events.This position intersects machine learning, data analytics, and real-world deployment. Your responsibilities may include improving model accuracy, refining training datasets, assessing edge cases, optimizing inference performance, and developing tools to enhance perception pipelines across cloud and on-device environments.This is not a role for side projects; you will take ownership of significant technical work that impacts our production systems. Under the mentorship of a senior engineer, you will design experiments, implement enhancements, evaluate performance, and help deliver improvements that influence how our systems interpret and respond to the physical world.This internship is perfect for individuals passionate about applied AI, particularly in computer vision, model evaluation, and deploying machine learning systems in real-world settings.The position is based in San Francisco, with a hybrid work schedule requiring at least three days in the office each week.