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Jonathan KiJK

Jonathan Ki

Data Platform Engineer | Cloud Engineer | AWS

€800/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jonathan

I help companies design and implement scalable data platforms on AWS, from architecture to production.

Data & Cloud Architect with over 10 years of experience, I work on data platform, data engineering, and sustainable data foundation structuring topics.

My goal: to build robust, scalable, and understandable platforms for teams to avoid technical debt and accelerate data usage.

I work in particular on:

  • Data architecture on AWS (data lake, lakehouse, data mesh)
  • Design and optimization of data pipelines
  • Structuring of data platforms (storage, orchestration, governance)
  • Scalability, performance, and best practices
  • Team support and technical leadership

AWS Authorized Instructor (Associate, Professional, Specialty)
  • French

    Native or bilingual

  • English

    Native or bilingual

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

Experience

  • Bpifrance
    Data Platform / Cloud Architect (AWS) — Tech Lead
    PUBLIC SECTOR
    November 2024 - Today (1 year and 8 months)
    Maisons-Alfort, France
    • Technical leadership of an AWS data platform supporting several production use cases
    • Design and evolution of scalable data architectures (data pipelines, storage, orchestration)
    • Supervision of a team of 9 data engineers (technical lead, architecture decisions, best practices)
    • Implementation of testing strategies (unit & integration) to ensure data pipeline reliability
    • Evaluation and integration of new storage approaches (e.g., Apache Iceberg)
    • Contribution to technical audits and management of improvement plans

    Impact:
    • Improvement of code quality and data engineering practices
    • Enhanced robustness and maintainability of the data platform

    Environment:
    AWS (S3, Glue, Athena, Step Functions, API Gateway), Spark, ETL, Terraform, Jenkins, CI/CD, Apache Iceberg
    Data Engineering Infrastructure as Code Tech Lead Cloud Architecture Terraform
  • AWS
    AWS Authorized Instructor — AWS Authorized Instructor (Champion)
    TECH
    March 2022 - Today (4 years and 5 months)
    Paris, France
    • Delivery of official AWS training (fundamentals to expert) to IT and data professionals
    • Engagements on behalf of AWS and several AWS Training Partners
    • Training on cloud, AWS architecture, security, Generative AI, data engineering, and best practices
    • Adaptation of content and pedagogy based on skill levels (beginner to advanced)
    • Support for teams in skill development and adoption of cloud architectures

    Impact:
    • Accelerated technical and data team upskilling
    • Improved team autonomy on AWS and data platforms
    • Dissemination of best practices in architecture, security, Generative AI, and data engineering

    Languages:French / English
    Amazon Web Services AWS Training Cloud Security Gen AI Data Platform
  • Fortuneo
    Cloud Architect (AWS)
    BANKING AND INSURANCE
    February 2024 - September 2024 (7 months)
    Paris, France
    • Analysis and evolution of a serverless AWS architecture supporting critical use cases
    • Design of a target architecture focused on scalability, security, and resilience
    • Implementation of asynchronous patterns (event-driven, orchestration) to improve processing robustness
    • Performance of load testing studies to validate scaling
    • Collaboration with data, platform, and engineering teams to ensure overall architectural consistency

    Impact:
    • Improved reliability and scalability of serverless applications
    • Alignment of architecture with the platform's long-term objectives
    • Reduced risks related to load increases and peak activity

    Environment:
    AWS (Lambda, Step Functions, EventBridge, S3, QuickSight), serverless architectures, event-driven
    Cloud Architecture AWS Cloud Data Architecture Infrastructure as Code

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Education

  • Information Technology and Software Engineering
    McMaster University
    2011
    Information Technology and Software Engineering
  • Ingénieur, Système d'information et Réseaux
    Ecole supérieure d'Ingénieurs en Génie électrique
    2011
    Ingenieur, Système d'information et Réseaux

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