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Jonathan KiniJK

Jonathan Kini

Senior Data Engineer | Data Platform | FinOps

€850/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jonathan

Most data platforms fail not because of the technology itself. They fail due to design flaws, lack of ownership, and uncontrolled costs.

I help companies build and evolve their data platforms while optimizing Snowflake and BigQuery costs.

With over 8 years of experience, I have worked on complex data environments (banking, pharma, media) with large volumes and strong business constraints.

I manage the entire process, from design to production.

What I bring:
· End-to-end data pipelines (batch & streaming)
· Modern data stack (Snowflake, BigQuery, dbt, Airflow, Spark)
· Platform architecture (cloud, Kubernetes, CI/CD, Terraform)
· Data cost optimization (FinOps approach)

Typical impact:
· Processing data volumes at the TB scale
· Improving performance and reliability
· Reducing Snowflake / BigQuery costs (20–50%)

I build data platforms that scale technically and financially.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km)

Experience

  • GROUPE CCF
    Senior Data Engineer
    January 2023 - Today (3 years and 5 months)
    Designed & Implemented:
    Designed and implemented robust data pipelines for end-to-end data collection, ingestion, transformation, and storage using dbt for modeling and Snowflake for warehousing.
    Platform Engineering: Architected and maintained the foundational infrastructure using container orchestration (Kubernetes) and infrastructure-as-code (Terraform), ensuring scalability, resilience, and seamless integration across diverse data pipelines.
    Collaboration:
    Partnered with data scientists, developers, and stakeholders to align technical solutions with business requirements.
    Automation:
    Built and maintained CI/CD workflows using Git, Jenkins, Maven, Docker, and Kubernetes significantly reducing deployment time.
    Optimization:
    Automated routine tasks with bash scripts and Terraform, reducing manual intervention.

    Technical Environment:
    AWS (S3, RDS, Lambda, Glue, Athena), Starburst, Airflow, DBT, Kubernetes, MSK, SQS, Python, Scala, GitLab CI, Terraform, Git
    AWS Terraform Airflow starburst DBT
  • Servier Monde
    Senior Data Engineer GCP
    PHARMACEUTICALS INDUSTRY
    July 2021 - December 2023 (2 years and 5 months)
    Implementation of a datalake in R&D on data experimentation of laboratories for Servier biologists, chemists, pharmacologists.

    RELEASES
    - Complexity: a large volume of data (tens of TB) from screening machines and very complex business rules
    - Implementation of batch data ingestion workflow
    - Implementation of workflows for data cleansing and exposure

    TECHNICAL ENVIRONMENT
    Bigquery, Cloud Storage, DataFlow, Python, Argo, Kubernetes, Pyspark, Git, Terraform
    Google Cloud Platform (GCP) Python SQL CI/CD BigQuery
  • Solocal
    Senior Data Engineer GCP
    ENTERTAINMENT AND LEISURE
    November 2020 - May 2022 (1 year and 7 months)
    Paris, France
    Implementation of a data platform that integrates sales and vendor data and makes it usable by the various Finance and Compensation squads

    RELEASES
    - Complexity: Many data sources to integrate and various
    data types (batch, streaming)
    - Implementation of batch data ingestion workflow
    - Implementation of streaming data ingestion workflow
    - Implementation of workflows for data cleansing and exposure in the Data Platform

    TECHNICAL ENVIRONMENT
    Bigquery, Cloud Storage, Composer, Airflow, DataForm, Python, Java, Cloud Function, Pub/Sub, Git
    Big Query Python SQL Google cloud Gitlab CI Linux scrum

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Education

  • Master Big Data
    University Paris Saclay
    2018

Certifications

Skill set

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