Arnaud Milleker
Senior Tech Lead Data Engineer | AWS
Salary / Daily rate
Paris, France
Freelance
Can come onsite
Skills
Languages
About me
Intro
Freelance Tech Lead Data with 10+ years of AWS expertise, currently leading 5-engineer teams at Hilti Group. Proven track record managing €500K budgets, deploying lakehouse migrations, and building scalable data platforms. Specialized in AWS Data Architecture, query optimization, and team leadership for enterprise-scale solutions.
Work experience
Freelance Data
FreelanceFreelance
Oct 2022 - Present
4 years 1 month
Paris, France
Data expert missions: - Data Engineer SQL, Python - Expertise AWS Data - Delta Lake migration - Audit and troubleshooting Redshift - Tech Lead Big Data (Spark, Airflow)
Hilti GroupFreelance
Apr 2023 - Present
3 years 7 months
Paris, France
Freelance Analytics Engineer Tech Lead
Jun 2024 - Present
2 years 5 months
Paris, France
Leading a Data Engineering team, my goal was to answer to Marketing Business Analysts needs: - Management of a team of 5 Data Engineers - Deployment of Data best practices (Data Model, automated tests) - Self-service BI (Data and technical trainings for analysts, simplified tooling) - Individual contributor (Google Analytics migration, Marketing Data aggregation, ...)
Freelance Tech Lead Data Platform
Apr 2023 - May 2024
1 year 2 months
Paris, France
In the team in charge of BI architecture, we rationalize all the tools to build a efficient and durable stack: - Analytics Engineer - Data Architect - Lakehouse migration (Airflow, Iceberg, Medallion Layer) - 3 people team management - Redshift expert
Freelance Tech Lead Data
Banque de FranceFreelance
Nov 2022 - Mar 2023
5 months
Paris, France
The team has to develop "Big Data" capabilities for different business projects - Tech Lead for 5 people - Manage business needs and team capabilities - Airflow developer Stack : Airflow, Spark, Python, CI/CD, Kibana
Head of Data
Free2Move
Nov 2021 - Oct 2022
1 year
Paris, France
Head of Data of the team responsible for the connected automotive Data at Free2Move. We went from nothing to: - Stack: Scala, Spark, Kinesis to manage 300K vehicles, streaming 40 Go through 400M events - Infrastructure: deployed in AWS by Terraform, monitored by Cloudwatch and Grafana, CI/CD in Gitlab - Team: 7 developers (3 Data Engineers, 3 DataOps, 1 Data Analyst)
Doctolib
Sep 2019 - Oct 2021
2 years 2 months
Paris, France
Squad Leader Data
Jan 2021 - Oct 2021
10 months
Paris, France
BI and Data Engineer Lead for "Patient" data at Doctolib - Manage 3 BI engineers - Dev as a Data Engineer - Data Architect AWS - Redshift expert for several teams Technologies : Redshift, Airflow, Python, Terraform, AWS
Senior Data Engineer
Sep 2019 - Jan 2021
1 year 5 months
Paris Area, France
Senior Data Engineer on the Enterprise Data Platform : - AWS Data Architect - Redshift Expert - Python and Airflow developper - DataOps (IAM, Terraform, monitoring with Lambda & Cloudwatch, ...)
Ogury Ltd
Sep 2016 - Aug 2019
3 years
Paris Area, France
Data Lake Manager
Sep 2017 - Aug 2019
2 years
Paris Area, France
I am managing a team of 4 Data Engineers to guarantee the Data Lake high availability and efficiency : - Data Lake architecture for current and future usage - Acting as Product Owner for every product - Ensure running tasks and workloads - Manage a 500 000€ budget on AWS technology - Ensure GDPR compliancy Tools : Redshift, Athena, Spectrum, Glue
Senior Data Engineer
Sep 2016 - Aug 2017
1 year
Paris Area, France
Data Engineer at Ogury. We are focused on high availability of the mobile advertising datas, used for machine learning and business KPI. - Data Pipeline building on AWS - Maintenance of Redshift cluster (AWS SQL database) - Studies for Ogury activities (Tableau, Excel) - Monitoring of machine learning engine Tools : Redshift, Data Pipeline, AWS, Python, Tableau, Elasticsearch, Excel
Groupe AVISIA
Sep 2015 - Oct 2016
1 year 2 months
Région de Paris, France
Senior Data Consulant
Sep 2015 - Oct 2016
1 year 2 months
Région de Paris, France
- Tech. Leader on an internal Big Data project - Leaded MongoDB workshop for consultants - Trainee recruiter and manager Technical : Spark, Hadoop, MongoDB
Big Data Developer
Sep 2015 - Oct 2016
1 year 2 months
Paris Area, France
Goal : Create the Covea Datalab. This Big Data lab is focused on building proof of concept for Covea activies. - data workflow development and maintenance for Hadoop cluster - trainer and user support for Big Data lab tools (Hadoop, H2O, R, Python) - Hadoop, Python, R, H2O Developer Technical : Cloudera, Hadoop, R, Python, H2O
ALTI une société de Tata Consultancy Services
Jan 2014 - Aug 2015
1 year 8 months
Big Data consultant
Jan 2014 - Aug 2015
1 year 8 months
- French translation of the engineering of the TCS 360° client vision tool - Technology watch - Client proposal writer - Client presentations - Internal workshops (Hadoop, data scientists training, business cases)
Data analyst, PSA
Jan 2015 - May 2015
5 months
CRM data analysis with a focus on marketing leads - Data mining - Data visualization Tools: Excel, R
BI Expert, Caisse des Dépôts et Consignations
Sep 2014 - Oct 2014
2 months
Scoping study for the future HR datawarehouse and reporting project - Workshop leader - Consulting after the study of needs - Costing
BI Consultant
ALTI
Mar 2012 - Jan 2014
1 year 11 months
Techno-functional consultant, in a maintenance team of 7 people in charge of the application for profitability calcul of enterprise bank accounts. - Techno-functional specifications - Business assistance - Production Monitoring
IT Consultant
BearingPoint
Sep 2011 - Mar 2012
7 months
Design of business and IT processes for a new application due to incoming regulations at Sanofi-Aventis. The purpose is to trace expenses, in all their forms for practitioners. - Collection of business needs and IT capabilities - Functional specifications - UC - Database modelling
BI Developer
BNP Paribas
Oct 2009 - Oct 2011
2 years 1 month
BI Analyst within the IT team for the global controlling of BNP Paribas. - Everyday run - Main OLAP developer - Project owner (100 and 300 days / man) - Constant dialogue with the business teams - Functional and technical specifications - Supervision of outsourced nearshore developments - Contributor for the CMMI3 Certification passed as focus project Tool : Hyperion Essbase
Education
EISTI
ingénieur
2008 - 2009
2 years