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Fifty-Five

Data-driven marketing analytics and consulting services

Data & AI Engineer Intern

Data EngineeringConfirmed live in the last 24 hours
InternshipParis, FranceNo salary listed

About the Job

Requirements

  • Have an engineering-school, computer-science-school, or equivalent university master's background at BAC+4/+5.
  • Have excellent command of Python development.
  • Have strong database and SQL data-manipulation skills.
  • Have advanced, reflective experience using local or command-line AI coding assistants such as Claude Code, Cursor, or Copilot, an interest in contextual extension protocols such as MCP, and practical experience with vibe-coding workflows.
  • Know software-engineering fundamentals and Git version control.
  • Be curious and autonomous, able to explore a raw codebase and formulate clear recommendations.
  • Be fluent in French and English; documentation and codebases are exclusively in English.
  • Be authorized to work in France.

Responsibilities

  • Audit the Google Meridian v2.0 open-source codebase to identify breaking changes and optimization opportunities.
  • Design test scripts and proofs of concept in Python to validate execution of new models.
  • Connect and feed test pipelines using the company's BigQuery environments.
  • Translate technical findings into accessible documentation and share integration best practices with the team.
  • Explore how Claude Code and MCP can accelerate codebase audits, dependency mapping, compatibility shim and wrapper generation, unit-test creation, and technical documentation.
  • As needed, help structure broader BigQuery tables and optimize queries over large datasets.

Desired Qualifications

  • Experience with BigQuery or Google Cloud Platform is a major asset.
  • Practical experience with agentic AI workflows is a plus.
  • Familiarity with LangGraph or LangChain is a plus.
  • A GitHub link showing personal projects that demonstrate coding or AI-automation practice is a plus.

About the Company

Fifty-Five

Data-driven marketing analytics and consulting services

Fifty-Five provides data-based marketing services. It combines consulting, technical skills, and marketing know-how to help brands optimize their marketing strategies using data. The company works by offering services that merge data strategy, analytics, and technical implementation to improve marketing outcomes for clients across multiple time zones and offices around the world. It differentiates itself from competitors through its blended mix of advisory and technical execution, rooted in European experience and a global footprint with 10 offices. The goal is to help brands turn data into measurable marketing results and value.

Company size
201-500
Company stage
Not listed
Total funding
Not listed
Headquarters
Paris, France
Founded
2010

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