Research Scientist

Research Scientist LocationNYC (NY), San Francisco (CA) or Paris (FR)Employment TypeFull timeDepartmentTechAbout the roleWe’re looking for a top‑tier Research Scientist to join our tech team.Your core responsibilities will be to:Lead Research for LinkupDesign and implement state-of-the-art retrieval and ranking systems for AI agentsPrototype, train, and evaluate new models for factual search and multimodal understandingBuild robust research pipelines, develop, deploy, and iterate on experiments end-to-endMaster the technical scope of your domain and raise the bar for scientific and engineering rigorCollaborate on research roadmaps and drive key modeling and evaluation decisionsOwn large cross-functional initiatives from exploration to productionWork autonomously alongside the CTO and the rest of the Software & ML teamsContribute to a strong research culture through experiment tracking, reviews, and knowledge-sharingRequirementsYou’re a great match if you:Are excited to help build Google for AI agents- and believe in Linkup’s missionHave strong experience in research in information retrieval, computer science or machine learning. PhD is preferred, MS. is a must. (5y of experience minimum) Bring hands-on experience with LLMs, NLP, embeddings, or information retrieval systemsHNSW and ANNs are second nature to youCare about performance, reliability, and code qualityEnjoy optimizing performance bottlenecksThrive in a fast-paced, high-ownership startup environmentExample ProjectsTrain a new embeddings model from scratchBuild and maintain an evaluations framework to measure the progress of our search engineDesign a RL framework to integrate AI preferences into our ranking algorithmOur StackNode.js / NestJSPythonJavaPostgreSQLOpenSearchVespaApache StormvLLMKubernetesGitHub ActionsTerraformDetailsThe ideal candidate will play a central role in our team, partnering closely with the founders to spearhead groundbreaking products. Your research expertise will shape the future of AI‑powered applications and bring our vision to life.We offer a flexible remote‑work policy- see the details here.Join us and leverage your expertise to push the boundaries of AI!About LinkupOur VisionWe believe in a future of AI agents and the agentic web. These digital entities can create more value for humanity than we ever could alone, but they depend on the internet to operate, collaborate, take action, and gather information.AI agents need web search. To perform well, they require information that is current, reliable, and context‑specific—not the diffuse, steadily aging knowledge frozen at their last training cut‑off.Modern web search is built for humans, not AIs. Instead of trusted facts, it serves links, ads, and click‑bait. People want visually engaging pages; AI systems need structured truth. An AI can absorb oceans of data, while human attention barely skims the surface. Humans think visually and intuitively; AI reasons in latent space.Web 2.0 is sunsetting. The deck is being reshuffled, and the Bing‑Google search oligopoly is crumbling. Indexing ever more pages is no longer the goal; semantically organizing facts for AI systems is. In the coming agentic web, Google’s ad‑driven model has no natural home.Search for AI must be rebuilt from the ground up. We are reconstructing the web as a rigorously structured knowledge layer, mapping every concept, entity, and claim into a coherent semantic graph. This foundation delivers verified facts and rich context to AI instantly, unlocking faster reasoning, higher accuracy, and radically more useful answers for everyone.Humans search Google; AI searches Linkup.Our MissionReality never stands still, and neither should intelligence. Linkup reconnects language models to a living stream of verified facts, ensuring AIs remain as current and insightful as the world they serve.Our mission is to deliver the world’s freshest, most trusted knowledge to AIs.Our CultureOur culture is built on the following values:Mission. We...