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Software Engineer

Zefir· Engineering
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Hybrid (Paris or remote)Full-timePosted 6mo ago

About the role

Zefir is building an AI autopilot for home sales in Europe, starting in France, delivering end-to-end AI-enabled sales journeys by orchestrating brokers, portals, buyers, and documents.

Responsibilities

  • Develop and deploy robust, high-performance APIs using Node.js (TypeScript), Nest.js, and GraphQL.
  • Build intuitive frontend applications with React.js and Next.js, delivering outstanding user experiences.
  • Collaborate closely with Product Managers and cross-functional teams (Operations, Growth, Brand) to prioritize features and deliver key objectives.
  • Own the full lifecycle of features from ideation and design through implementation, deployment, and performance monitoring.
  • Write clean, maintainable, thoroughly-tested code to ensure fast deployments and continuous improvement.
  • Implement comprehensive end-to-end (E2E) tests to ensure reliability and reduce code review cycles.
  • Proactively contribute to strategic decisions about the future direction of our web applications and infrastructure.
  • Leverage LLM-based libraries and implement key AI-driven functionalities (RAG, memory, agentic workflows) using stacks like Pinecone and Langchain.

Qualifications

  • Entrepreneurial mindset with a demonstrated ability to turn ambitious ideas into practical solutions.
  • Excellent problem-solving skills, with the ability to quickly evaluate and recommend effective technological solutions.
  • Highly collaborative, open-minded, and comfortable working closely with diverse teams.
  • Ambitious, performance-oriented, and maintains a positive attitude.
  • Fluent in both English and French (required), written and spoken.

Skills

Required:Node.jsTypeScriptNest.jsGraphQLReact.jsNext.js
Nice to have:LLM-based development

Benefits

  • Competitive salary: You can run your own simulation with our salary calculator.
  • BSPCE (Stock Options): Available for everyone, with monthly vesting after year one, over a 4-year period.
  • Healthcare plan: Full coverage with Alan for team members, their partners, and children.
  • Office in Le Peletier, Paris (9th arrondissement): With flexible remote work options.
  • Swile meal card: €11 per worked day.
  • Swile mobility card: €45/month to support sustainable transportation (metro, carpooling, biking…).
  • Team events: Monthly Mixers and quarterly All Hands.
Last updated Oct 15, 2026. Interested? Apply on the company site.

About Zefir

La 1e plateforme immobilière intelligente.

Zefir est la 1e plateforme immobilière de vente collective qui accélère la rencontre entre vendeur et acheteur, en facilitant la coopération de tous les agents.

immobiliervente collectiveIAassistance immobilière
Company profileWebsite

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