Infrastructure Startups funded by Y Combinator (YC) in the San Francisco Bay Area that are currently hiring 2025

Apollo GraphQL is the leader in open source and commercial GraphQL technologies. Apollo’s open-source GraphQL client, server, and gateway are downloaded more than 17M times per month and used in production by over 30% of the Fortune 500. Customers like Walmart, Expedia, Glassdoor, Audi, and PayPal, use the Apollo Graph Platform to unify their GraphQL efforts, collaborate on graph development, and safely iterate on their graphs. Based in San Francisco, Apollo is backed by Insight Partners, Andreessen Horowitz, Matrix Partners, Trinity Ventures, Y Combinator and individual investors.

MemSQL is The No-Limits DatabaseTM, powering modern applications and analytical systems with a cloud-native, massively scalable architecture for maximum ingest and query performance at the highest concurrency. MemSQL envisions a world where every business can make decisions in real-time and every experience is optimized through data. Global enterprises use the MemSQL distributed database to easily ingest, process, analyze, and act on data in order to thrive in today’s insight-driven economy. MemSQL is optimized to run on any public cloud or on-premises with commodity hardware. Visit www.memsql.com or follow us @memsql. Headquartered in San Francisco, CA with offices in Seattle, WA and Portland OR, MemSQL has raised over $100M from top investors including GV, Accel Partners, and Khosla Ventures, among others. MemSQL is trusted by customers including Uber, Akamai, Dell EMC, Samsung, Comcast, Kellogg, and more. If you want to work at a company that celebrates diversity, innovation, leadership, and creativity every day, check out our openings at https://www.memsql.com/careers/.

Bitmovin has been a first mover in almost every significant development in online video, from building and deploying the world’s first (and fastest) commercial adaptive streaming (MPEG-DASH/HLS) HTML5 Player, to being the first to achieve 100x realtime encoding speeds in the cloud. Bitmovin provides HEVC as well as VP9 live streaming with 60FPS and 4K resolution, and built the first containerized video encoding solution with Docker and Kubernetes. Bitmovin products are completely in-house developed, easy and fast to integrate and highly customizable. In combination with our great support, documentation and SLAs, this is a true enterprise offering. To find out more about Bitmovin’s video infrastructure solutions, or about any individual products, contact sales@bitmovin.com, or visit our website: bitmovin.com

Mux is an API-first video platform designed by experts to make world-class video streaming and analytics possible for every development team. Self-optimizing videos take the guesswork out of encodings, delivery, and renditions. Mux makes your video look beautiful on every device, every time. We offer two products, Mux Video and Mux Data. Mux Video is a simple API to advanced video streaming. Powered by data and designed by video experts, Mux Video makes beautiful video possible for every development team. Post a video or live stream with a single API call, and watch it within seconds. Mux Video handles the encoding, storage, and delivery. QoE and performance analytics provided by Mux Data is included by default for every Mux video stream.This real-time data is used to create the right renditions for every device and title, resulting in greater reliability and better viewer experiences. Mux Data is a Quality of Experience analytics platform that measures the performance metrics that actually matter to viewers: rebuffering, startup time, video quality, and errors. Our intuitive dashboard quickly gives users the insight to find issues and make improvements through features like A/B testing, industry-wide scores, alerts, and detailed information about every single video view. The product works out of the box on HTML5, iOS, Android, and major OTT platforms. All data is available via exports and APIs, making it easy to integrate Mux Data into other systems.

We provide a simple API for creating, storing, versioning, and collaborating on multi-modal AI datasets of any size. With Activeloop's open-core stack, you can rapidly transform and stream data while training models at scale. Deep Lake powers foundational model training by acting as a vector database with significant benefits, such as (1) the ability to use multi-modal datasets to fine-tune your own LLM models, (2) storing both the embeddings and the original data with automatic version control, so no embedding re-computation is needed (3) truly serverless service with no vendor lock-in. How cool is that? GitHub loves us - we're one of the fastest-growing libraries there, and we're used by little-known companies like Google, Waymo, and Intel. No big deal. Our founding team hails from places like Princeton, Stanford, Google, and Tesla, and we're backed by Y Combinator & other Silicon Valley heavyweights. Activeloop is hiring, and we want you! Check out our open roles on our YC page and join the fun. 10-min demo: https://activeloop.wistia.com/medias/aibvo0dst2 Whitepaper: https://www.deeplake.ai/whitepaper

We are working on the software that will power the next generation of Cloud Computing (Edge Computing) platforms using WebAssembly. You can see us as a mix between Docker (but 100x more performant in startup time, and with 100x more lightweight containers), npm (we released the first WebAssembly package manager: wapm.io) and the JVM (but more universal).

MindsDB is a fast-growing AI startup headquartered in San Francisco, California. As a leading innovator bringing AI and Data together, our passion is empowering companies to easily build AI capabilities that can Think, Understand and Orchestrate: enabling teams to move from prototyping & experimentation to production in a fast & scalable way. MindsDB was founded in 2017 by Adam Carrigan and Jorge Torres, inspired by Ian M. Banks's Culture series, in which super AI systems called Minds collaborate with other forms of life to accomplish incredible goals. Starting as an Open-Source project, MindsDB has grown to be one of the most widely used AI-Data platforms in the world, with a growing community and more than 700 contributor developers from every corner of the globe. We are backed with over $55M in funding from Mayfield, Benchmark, YCombinator, and nVidia. MindsDB is also recognized by Forbes as one of America's most promising AI companies (2021) and by Gartner as a Cool Vendor for Data and AI (2022).

Aden is an AI-native, multi-agent ERP platform built for operations leaders to unify their business systems, streamline processes, and efficiently manage objectives. Highly customizable and rapidly deployable, Aden boosts Key Performance Indicators (KPIs) with declarative solutions and intelligent AI agents. Currently, Aden helps over 100 operationally-focused businesses, including supply chain control towers of major global corporations, IT departments of major financial institutions, and other high-impact companies, elevate their efficiency, automate workflows, and scale beyond manual operations.

​​Cortex is an internal developer portal built to accelerate the path to engineering excellence. Companies like Docker, TripAdvisor, and Dropbox use Cortex to catalog, score, and assign action to improve service quality and velocity, so devs can get back to work that drives the business forward.

Rootly is a modern on-call and incident management platform used by top YC companies like Dropbox, Lattice, Webflow, Faire, but also Figma, LinkedIn, NVIDIA and 100s more.

Sieve is a specialized cloud built for video / audio AI. Every video product today is being overwhelmed by a ton of new use cases that are enabled by AI. Video is unique in that it’s much more compute and data-intensive to process or generate compared to other modalities. This leads to a ton of complexity around the ways models are run, the kinds of extra processing needed to happen around them, and the complexity of pipelines that solve the most valuable use cases in the modality. To this end, Sieve’s strongest and most immediate value proposition comes from being an AI toolkit that solves problems unique to video — unlike generic AI developer tools that might exist today. Video is just the start however. Learn more about our long term vision [here](https://sievedata.com/about/jobs)!

Eventual is a data warehouse for ML/AI. We are building an integrated development experience for data scientists and engineers to build ML/AI applications which query and process multimodal data (images, video, audio and 3D scans). Daft (https://www.getdaft.io) is our open-sourced distributed data query engine. It has a Python Dataframe API and is built in Rust, providing both ease of use and performance for use-cases such as ML data engineering, training data ingestion and general data analytics. We are funded by investors such as Caffeinated Capital, Array.vc and top angels in the valley from Databricks, Meta and Lyft. Our team has deep expertise in high performance computing, big data technologies, cloud infrastructure and machine learning.

Packaged Applications for Any Platform. Bitnami has automated the ability to package, deploy and maintain applications, lowering the barrier to adoption for anyone to deploy and maintain a full spectrum of server applications, development stacks and infrastructure applications in virtually any format. Simply click to deploy any one of 120+ ready-to-run applications from the Bitnami Application Catalog or use Bitnami Stacksmith to package and migrate your custom in-house applications to the cloud. For more information, visit www.Bitnami.com, or follow us on Twitter (@Bitnami) and Facebook.

Your software is your competitive advantage, and your customer experience is everything. Armory Continuous Deployment solutions empower you and your teams to confidently deploy every application, every time; safely and securely, so you can accelerate your time-to-market, increase stability, and decrease customer-impacting issues.

Peer5's P2P CDN improves content delivery for live and on demand video streams. As video streaming continues to become more mainstream and the streams themselves become HD and 4K, traditional CDNs struggle to deliver high quality viewing experiences. Many publishers try to keep up with peak demand by paying for more servers, many of which are almost never used and struggle with video playback. Not only is this expensive, but it's also inefficient, which is why at Peer5, we've created a P2P CDN to boost your video streaming capabilities. Our CDN works with your servers to ensure that as your viewership increases, your network gets stronger by offloading bandwidth to our peer network. On average, this has been shown to increase server capacity by 20x, offload 70% of bandwidth, increase viewing time by 30% and decrease instances of rebuffering by 40%. Our video streaming CDN uses emerging technologies, including HTML5 and WebRTC. They require no installation by end users and offer easy integration for content providers. We support many different streaming protocols, players and media servers.

Satsuma is a developer tool for building applications on top of real-time blockchain data. Our product lets developers take decoded data from multiple chains, customize it for their use cases, and access it through API endpoints. Blockchains serve as distributed databases for these products, holding their most important data. However, it’s difficult to access and query that data. We believe this friction is an enormous blocker for web3 developers and that better tooling will enable mass adoption for web3. We’re a founding team of engineers, having built data infrastructure and product as early employees at Airtable, Heap, and Y Combinator.