AI-Driven Software Engineer Intern (Paris)

Neara; Paris; On-site; EUR 12,276 - 17,856; Part time

Job summary

Crossbeam invites a Software Engineer Intern to join the founding team of Pace or Trace in Paris and own real features end to end—from design to production. You’ll build AI agents, integrations, and product features shipped to users within days.

You’ll work with Python, FastAPI, Langgraph, PostgreSQL, Temporal, Pinecone, and Claude-powered agents, gaining rare insight into building a zero-to-one product with a scaling company behind you. Start date Sept 7, 2026 (flexible) for 6 months.

Qualifications

• Strong programming fundamentals, especially in Python.
• Interest in LLMs and AI agents.
• Final-year student or gap year
• Fluent English; based in Paris and able to work from our Paris office.

Responsibilities

• Design and ship features across the stack (Python, FastAPI, Langgraph, PostgreSQL, Temporal, Pinecone).
• Build and improve AI agents powered by Claude and LangGraph.
• Develop integrations with Salesforce, HubSpot, Gmail, Slack, Gong and other tools.
• Use AI tools daily to accelerate delivery.
• Participate in product discussions and have a real voice in what we build and why.

Skills

Python

TypeScript

English

Education

Final-year student

Job description

Crossbeam invites a Software Engineer Intern to join the founding team of Pace or Trace in Paris and own real features end to end—from design to production. You’ll build AI agents, integrations, and product features shipped to users within days.

You’ll work with Python, FastAPI, Langgraph, PostgreSQL, Temporal, Pinecone, and Claude-powered agents, gaining rare insight into building a zero-to-one product with a scaling company behind you. Start date Sept 7, 2026 (flexible) for 6 months.