Senior Backend Engineer

LinkUp
United States, France
Workplace: OnsiteFull timeFunction: Software EngineeringExperience: 3+ yearsSkills: ["Node.js","NestJS","Python","Java","PostgreSQL","OpenSearch","Vespa","Apache Storm","Kubernetes","GitHub Actions","Terraform"]

Senior Backend Engineer responsible for building and operating large-scale, distributed systems powering AI-ready web search. You will develop APIs, data pipelines, and microservices, optimize performance and scalability, participate in system design, and collaborate with ML/product teams to deliver data-driven features in a fast-paced startup environment.

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FursaFursa
LinkUp
LinkUp
10 months ago

Senior Backend Engineer

✓ Verified Job

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

Source: Company careers pageValidated by: Fursa AI
Last checked: 5 hours agoStatus: Live

Job Summary

Senior Backend Engineer responsible for building and operating large-scale, distributed systems powering AI-ready web search. You will develop APIs, data pipelines, and microservices, optimize performance and scalability, participate in system design, and collaborate with ML/product teams to deliver data-driven features in a fast-paced startup environment.
Location: United States, France
Workplace: Onsite
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, data pipelines, and microservices for indexing, retrieval, and monitoring.
  • •Optimize performance, scalability, and resource usage across our stack.
  • •Participate in architecture discussions and contribute to system design.
  • •Collaborate with ML and product teams to deliver data-driven features.

Key Requirements

  • •Have strong experience in backend development (3y minimum).
  • •Understand distributed systems, caching, and data storage internals.
  • •Care about performance, reliability, and code quality.
  • •Enjoy debugging tough production issues and optimizing performance bottlenecks.
  • •Are curious about AI infrastructure and retrieval systems.
Experience:3+ yearsAIWeb searchStartupBackend
Skills:Node.jsNestJSPythonJavaPostgreSQLOpenSearchVespaApache StormKubernetesGitHub ActionsTerraform
Languages:English
Tech Stack:Node.jsNestJSPythonJavaPostgreSQLOpenSearchVespaApache 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