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AI Backend / Fullstack Developer

AI Backend / Fullstack Developer

CONEXIONHRCity of Buenos Aires, AR
Hace más de 30 días
Descripción del trabajo

We are the AI-powered B2B CRM and Order Management System built specifically for brands and distributors. Our platform automates B2B sales workflows, shortens sales cycles, and unlocks new revenue streams—turning messy back-office operations into scalable growth engines. We’re backed by top-tier investors and trusted by global distributors, brands, and retailers. Now, we’re entering our next phase of growth—and engineering excellence is at the heart of it.

Who We’re Looking For :

We’re hiring an AI Backend / Fullstack Engineer to build and scale our AI-powered features, working directly with our Engineering and Product leadership team.

This role is foundational in designing, developing, and maintaining the backbone of our AI-driven platform. You’ll build impactful solutions used by real customers and lay the foundation for future innovation.

Qualities We Value :

  • Problem-Solver :  You thrive on tackling complex technical challenges and delivering practical solutions.
  • AI-Expert :  Proven experience building real-world AI / ML pipelines and features (semantic search, RAG pipelines, vector search, LLM integration, internal copilots).
  • Exceptional Communicator :  Clearly articulate technical concepts and collaborate effectively with cross-functional teams.
  • Autonomous :  Comfortable working independently, owning your projects from conception to deployment.
  • Agile & Fast :  Experience rapidly building MVPs and iterating based on user feedback.
  • Technical Expertise :  Deep experience with Node.js, Python, MongoDB, and modern AI frameworks.

What You’ll Do and Own :

  • AI Feature Development :  Build and enhance core AI capabilities including semantic search, RAG pipelines, vector search, LLM integrations, and internal copilots.
  • Backend Engineering :  Write and maintain robust, production-quality backend code using Node.js / NestJS, Python, TypeScript, and MongoDB.
  • AI Infrastructure :  Design, deploy, and manage scalable AI / ML pipelines and and storage / retrieval logic, with vector database solutions (Weaviate, Milvus).
  • Testing & Quality Assurance :  Develop and maintain comprehensive tests (unit, integration, E2E) using Jest, PyTest, Playwright, and Selenium.
  • DevOps & Cloud Management :  Deploy, scale, and maintain infrastructure on AWS, ensuring system reliability and scalability (Jenkins, Docker).
  • Cross-functional Collaboration :  Work directly with product and business teams to define, scope, and deliver impactful features.
  • Requirements :

  • 3+ years of experience in backend / fullstack engineering, ideally in B2B SaaS environments.
  • Proven experience developing and deploying AI / ML-driven features and pipelines.
  • Expertise in Node.js, NestJS, Python, TypeScript, MongoDB, and vector databases.
  • Strong experience with production deployment and cloud infrastructure (AWS / GCP, Docker, Jenkins).
  • Demonstrable ability to quickly build MVPs and deliver iterative improvements based on user feedback.
  • Excellent communication skills, capable of clearly articulating technical strategies and solutions.
  • Comfortable in autonomous roles—self-driven and proactive.
  • Our Stack :

  • Backend : Node.js, NestJS, TypeScript, MongoDB.
  • AI : Python, OpenAI, LLMs, vector databases (e.g., Weaviate, Milvus)
  • Infrastructure : AWS, GCP, Jenkins, Docker.
  • Frontend : Vue (rarely, if you want)
  • Testing : Jest, PyTest, Playwright, Selenium.
  • Why Join Us?

  • Fast-growing startup with significant growth opportunities : own your work, influence technology decisions, and scale with us.
  • Work with cutting-edge AI technologies and an exceptional, agile engineering team.
  • Direct collaboration with founders and decision-makers—no bureaucracy.
  • High-impact role shaping the core technology of our innovative product.
  • Flexible work, with ownership and autonomy.
  • Opportunity to see immediate impact of your work through real users and practical applications.
  • Benefits :
  • remote.
  • USD payment.
  • 4 weeks of vacations and 10 local holidays paid.
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    Backend Developer • City of Buenos Aires, AR