Open Source AI Startup Jobs

Data infrastructure company providing high-quality training data for AI applications, recently partnered with Meta.

Cloud platform for running and fine-tuning open-source AI models at scale.

Platform for deploying and scaling machine learning models in production.

Application security and software supply chain security platform for modern DevSecOps.

Framework and platform for developing applications powered by large language models.

Static analysis tool for finding bugs, detecting vulnerabilities, and enforcing code standards.

Code intelligence platform that helps developers search, understand, and fix code.

Building open-weight frontier models and AI agents.

Infinite canvas SDK for React enabling developers to build web-based whiteboards and collaborative visual experiences, powering products like ClickUp Whiteboards and Padlet Sandboxes.

Open-source cloud infrastructure providing secure sandboxed environments for AI agents to run code and complete complex tasks, trusted by 88% of Fortune 100 companies.

Developer observability for live apps: dynamic logs, metrics, traces without restarts.

Human-centric open-source LLMs and simulators; building decentralized AI infrastructure.

Polars is a blazingly fast DataFrames library written in Rust, offering Python, R, Node.js, and SQL bindings for efficient, multi-threaded data manipulation at scale.

Open-source AI security testing platform for detecting prompt injection and LLM vulnerabilities.

Open-source, ACID-compliant search & analytics database—an Elasticsearch alternative built on PostgreSQL.

TensorZero is an open-source stack for industrial-grade LLM applications:contentReference[oaicite:26]{index=26}.

Network infrastructure management platform based on open-source NetBox for enterprise automation.

Open-source product analytics platform with session replay, feature flags, and A/B testing.

Open-source ML model deployment platform with unified serving framework and BentoCloud hosting.

AI research company building adaptive models that learn continuously without expensive retraining, using less computing power than leading AI models, founded by former Cohere VP of Research Sara Hooker

Anysphere builds Cursor, an AI-native coding environment for software teams, integrating LLM-assisted editing, agent workflows, and developer tooling.

Research group behind the FLUX series of image-generation models, focused on controllable creative AI systems.

Cal.com is an open-source scheduling infrastructure platform that enables absolutely everyone to build scheduling into their applications, providing a flexible and customizable alternative to proprietary scheduling tools.

Delivers secure container images and tooling to protect open-source supply chains by default.

Community platform for fine-tuning and sharing open-source AI models like Stable Diffusion, enabling users to customize models and access a marketplace of generative AI content with over 23 million monthly visitors.

Open-source AI coding agent that runs in your IDE to plan, write, and edit code with your project context.

CodeRabbit is an AI-powered code review platform designed to help developers automatically identify bugs and improve code quality:contentReference[oaicite:4]{index=4}.

Collate is a data intelligence platform built on the open-source OpenMetadata project, automating data discovery and governance for teams:contentReference[oaicite:5]{index=5}.

Comfy develops ComfyUI, an open-source node-based platform for generative AI that enables creators to build visual AI workflows, used by over 1 million creators at companies like Netflix, Amazon Studios, and Tencent.

Convex is a backend-as-a-service platform for modern web applications, combining reactive databases, server functions, and auth-ready infrastructure.

CrewAI builds a multi-agent platform and open-source framework for orchestrating collaborative AI agent workflows in production applications.

AI-powered code editor and pair programming tool built by Anysphere, helping developers code faster with intelligent autocomplete, codebase chat, and AI-assisted coding features.

Dash0 is building the first AI-native observability platform powered by Agent0, an SRE AI agent that helps developers and operators quickly identify and fix application and infrastructure issues, processing millions of data points with OpenTelemetry-native architecture.

Experimental AI product lab offering tools for content generation and editing across various media, including image and video generation, music composition, and photo editing

Developer infrastructure platform that automatically generates SDKs in multiple languages (TypeScript, Python, Go, Java, Ruby, C#, PHP) and interactive API documentation from API specifications, trusted by over 200 companies including Square, Webflow, ElevenLabs, and Intercom.

Model serving and fine-tuning platform for open and custom LLMs, designed for high-performance, cost-efficient inference.

Open-source financial infrastructure platform that provides programmable ledgers, payment connectivity, orchestration tools, and reconciliation services for building modern financial applications, trusted by companies like Booksy, Doctolib, Liberis, and Shares.

An all-in-one open source platform to securely manage application configuration and secrets like API keys and database credentials across teams and infrastructure.

Lightdash is an open-source BI platform built on dbt that enables self-serve analytics and metrics for modern data teams.

Marqo is a vector search platform that enables developers to build smarter search experiences with multimodal AI, improving conversion rates for e-commerce, recommendations, and content discovery.

Mem0 is a universal, self-improving memory layer for LLM applications that enables them to remember and learn from user interactions over time, powering personalized AI experiences with over 41,000 GitHub stars and 14 million Python package downloads.

Mistral AI develops frontier foundation models and enterprise AI products, including open-weight and commercial offerings for assistants, agents, and production deployment.

Open-source AI company building tools to structure, understand, and collaborate with unstructured data including GPT4ALL, Atlas visualization platform, and Nomic Embed text embeddings.

Open-source enterprise search and AI assistant that connects to internal apps (e.g., Slack, GitHub, Confluence) and enables RAG.

Open-source model-agnostic platform for cloud coding agents that automates real engineering work securely and transparently

Phylo is an applied AI research laboratory developing Biomni Lab, an integrated workspace enabling scientists to plan, author, execute, and collaborate on complex biological research tasks with state-of-the-art agentic AI.

Prismic is a headless CMS and page builder designed for modern web development, enabling marketing teams to create pages independently while developers maintain control using frameworks like Next.js, Nuxt, and SvelteKit.

Qdrant develops an open source vector database for semantic search and retrieval workloads in production AI systems.

Software supply chain security platform delivering comprehensive vulnerability management with curated near-zero-CVE open-source images, automated CVE remediation, and container hardening capabilities. Simplifies FedRAMP compliance and accelerates DevSecOps workflows.

Agentic software creation platform enabling anyone to build applications using natural language with collaborative browser-based IDE

Provides end-to-end computer vision platform for managing data, labeling, training, and deploying models.

Screenpipe is an open source desktop AI memory platform that continuously captures screen and audio data for local search and automation.

Succinct is making zero-knowledge proofs accessible to any developer through SP1, their zkVM, and decentralized prover network that enables scalable blockchain applications and cryptographic infrastructure.

Supabase is an open-source backend-as-a-service platform offering managed PostgreSQL, authentication, real-time subscriptions, and storage for web and mobile developers:contentReference[oaicite:24]{index=24}.

Symbolica is a pioneering AI research lab founded in 2022 that leverages category theory to deliver breakthroughs in modern artificial intelligence research by building structured reasoning in machines with formal logic and semantics at the architectural level.

Cloud platform for frontend teams building with Next.js and modern web frameworks, offering global edge infrastructure.

VoidZero is dedicated to building an open-source, high-performance, and unified development toolchain for the JavaScript ecosystem founded by Evan You, creator of Vue.js and Vite, with deep expertise in JavaScript tooling.

Intelligent terminal for developers with AI-powered features, built with Rust to supercharge developer productivity through Agent Mode for seamless code generation, editing, and task management.

Free AI content detection tool designed to distinguish between AI-generated and human-written text with advanced detection algorithms