Software Engineer

Zefir

France

Description

Who We Are

Zefir is Europe's fastest-growing AI Real Estate Marketplace. We're transforming how homes are bought and sold, enabling transactions twice as fast as traditional methods. In just 2 years, we've achieved over €1 billion in Gross Merchandise Volume (GMV).

Backed by over €50 million from top-tier investors like Sequoia Capital, we're committed to accelerating life changes for millions of current and future European homeowners.

E

ngineering TeamA

t Zefir, our Engineering Team is the driving force behind our mission to accelerate life changes. Growing rapidly from 9 to 30+ engineers, we don’t just write code—we solve meaningful problems for our customers.F

rom ideation to launch and beyond, engineers at Zefir take full ownership of their work, ensuring that every feature delivers the expected impact. We leverage LLM-based development workflows and shared best practices to automate repetitive tasks, allowing us to keep our codebase lean, scalable, and built for speed.R

e

sponsibilities/MissionDe

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

a

lificationEnt

  • repreneurial mindset with a demonstrated ability to turn ambitious ideas into practical solutions.Exc
  • ellent problem-solving skills, with the ability to quickly evaluate and recommend effective technological solutions.Hig
  • hly collaborative, open-minded, and comfortable working closely with diverse teams.Amb
  • itious, performance-oriented, and maintains a positive attitude.Flu
  • ent in English for clear and effective communication.Ben

e

fitsComp

  • etitive salary: You can run your own simulation with our salary calculator.BSPC
  • E (Stock Options): Available for everyone, with monthly vesting after year one, over a 4-year period.Heal
  • thcare plan: Full coverage with Alan for team members, their partners, and children.Offi
  • ce in Le Peletier, Paris (9th arrondissement): With flexible remote work options.Swil
  • e meal card: €11 per worked day.Swil
  • e mobility card: €45/month to support sustainable transportation (metro, carpooling, biking…).Team
  • events: Monthly Mixers to connect and share good times, and quarterly All Hands to celebrate wins across the company.Our

O

perating Principles🏔️ S

teep Mountains Are Steep: Setting ambitious goals and working hard to achieve them.🌊 Ri

de Reality: Actively seeking challenges and thriving by adapting flexibly to changes.🏀 Pl

ay for the Front of the Jersey: Prioritizing team success over individual recognition.