Senior Full Stack Engineer

LinkUp
United States, France
Full timeFunction: Software EngineeringExperience: 3+ yearsSkills: ["Communication","Collaboration","Problem-solving","Debugging","Ownership"]

Senior Full Stack Engineer to join Linkup and build AI-ready web search infrastructure, spanning distributed systems, APIs, frontends, and data pipelines. You’ll work with the CTO and ML/product teams to deliver scalable, high-performance features, design intuitive UIs for developers and enterprise users, and participate in architecture discussions in a fast-paced startup environment.

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FursaFursa
LinkUp
LinkUp
10 months ago

Senior Full Stack Engineer

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Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 6 hours agoStatus: Live

Job Summary

Senior Full Stack Engineer to join Linkup and build AI-ready web search infrastructure, spanning distributed systems, APIs, frontends, and data pipelines. You’ll work with the CTO and ML/product teams to deliver scalable, high-performance features, design intuitive UIs for developers and enterprise users, and participate in architecture discussions in a fast-paced startup environment.
Location: United States, France
Employment Type: Full time
Job Function: Software Engineering
Seniority: Sr. Manager level

Key Responsibilities

  • •Build and operate large-scale, distributed systems powering AI-ready web search
  • •Develop APIs, frontends, and data pipelines for indexing, retrieval, and monitoring
  • •Design and implement intuitive, high-performance user interfaces for developers and enterprise users
  • •Maintain our web app and other user-facing products
  • •Optimize performance, scalability, and resource usage across our stack

Key Requirements

  • •3+ years of experience in both frontend and backend development
  • •Understand distributed systems, APIs, and modern frontend frameworks (React or similar)
  • •Care about performance, reliability, and code quality—both server-side and client-side
  • •Enjoy debugging tough production issues and optimizing performance bottlenecks
  • •Curious about AI infrastructure and retrieval systems
Experience:3+ yearsAIWeb searchStartup
Skills:CommunicationCollaborationProblem-solvingDebuggingOwnership
Tech Stack:Node.jsNestJSReactPythonJavaPostgreSQLOpenSearchVespaApache StormKubernetesGitHub ActionsTerraform

Company Brief

LinkUp
Provides an AI-optimized web search API that lets LLMs and AI agents access, search, and interact with web and premium content efficiently and ethically, offering developer APIs and integrations for retrieval-augmented generation and agentic workflows.
Industry: API Platforms
Company Size: Small (11 to 50 employees)
Growth: Early Stage Startup
Funding: Pre Seed
Headquarters: Paris, France
Founded: 2024
WebsiteLinkedIn