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Benjamin BonnyBB

Benjamin Bonny

Tech Lead Data & AI | Architecture & Full Stack

€800/day
9 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Benjamin

After a career as a developer, Lead Dev, and then CTO, I now support startups and scale-ups on Data Tech Lead, product architecture, and applied AI missions.

I intervene particularly when it's necessary to structure a data platform, make an existing product reliable, accelerate delivery, or help a team reach a technical milestone.

My missions generally cover:
  • Tech Lead & architecture: designing robust and scalable architectures, technical framing, progressive refactoring of legacy systems, securing flows, software quality, and CI/CD
  • Technical management: code review, team support, dissemination of best practices, product/business/tech coordination
  • Hands-on execution: POCs, rapid deployment, full-stack development on high-stakes topics

I also have a strong specialization in Modern Data Stack and applied AI.

I support my clients in:
  • structuring modern data platforms
  • industrializing data flows and quality
  • business modeling and producing reliable KPIs
  • implementing copilots, agents, and RAG uses connected to company data

I intervene with a hands-on, pragmatic, and impact-oriented approach: unblocking critical issues, making existing systems reliable, accelerating deployment, and ensuring teams gain autonomy.

Main stack: Node.js, NestJS, React, TypeScript, AWS/GCP, Terraform, Docker
Data: BigQuery, Snowflake, dbt, Airflow, Airbyte, Fivetran, Kafka, Metabase, Looker
AI: OpenAI, Vertex AI, LangChain, agent integration

Recurring topics: Tech Lead, architecture, data platform, full stack, DevOps, data & AI.
  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Paris (up to 10km)

Experience

  • Freelance
    Freelance (Fullstack, CTO, Data engineer)
    July 2022 - Today (3 years and 11 months)
    Data / AI Tech Lead
    Structuring and industrializing a modern data platform around BigQuery, dbt, Airflow, Fivetran, and Metabase. Business modeling work, data flow reliability, and progressive migration of legacy reporting. Implementation of a conversational agent on data to facilitate access to KPIs and data exploration by internal teams.

    Full Stack / Architecture Tech Lead
    Supporting the progressive refactoring of a legacy product towards a more robust architecture in React and NestJS. Technical framing, structuring new application components, securing data flows, migration away from legacy systems, and overall technical steering support. Objective: improve robustness, maintainability, and operational continuity.
    Metabase BigQuery DBT Node.js AI and data analysis
  • Believe
    Tech Lead
    CULTURE
    May 2020 - June 2022 (2 years and 1 month)
    Paris, France
  • Soundsgood
    CTO
    CULTURE
    September 2017 - May 2020 (2 years and 8 months)
    Paris, France

Reviews

5.0

Out of 9 ratings

AD

Account deleted

Reviewed on 10/11/2017

AD

Account deleted

Reviewed on 9/6/2017

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Education

  • Computer Engineering
    TELECOM Paristech

Skill set

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