Wessim Slimi
@wessimslimi
Senior data engineer designing production real-time streaming platforms with Kafka, Flink, and AI-powered insights.
What I'm looking for
I’m a data engineer focused on production distributed real-time data processing platforms for the maritime sector, building stateful streaming on Kafka + Flink + Hadoop/Spark. In my recent work (SmartShip, CMA-CGM), I designed and deployed an Agentic AI framework (LangChain/LangGraph) on Kafka + Flink streams across 250+ vessels, with embedded ONNX inference under <10ms latency and measurable +15% fuel savings.
I also deliver full ML/LLM lifecycle capabilities inside streaming systems: automated retraining, data drift monitoring, feature stores on Apache Iceberg (S3 with AWS Glue Catalog), and LLMOps evaluation/observability (LLM-as-a-judge, factuality/task-success metrics; Langfuse traces, prompts, cost, latency). I lead engineering standards across production programs and tune systems using RocksDB state backends, checkpointing/savepoints, and Flink SQL/DataStream/Table API.
Experience
Work history, roles, and key accomplishments
Lead Data & AI Engineer (SmartShip)
CMA-CGM
Jan 2025 - Present (1 year 6 months)
Designed and deployed an agentic AI framework (LangChain/LangGraph) on top of Kafka + Flink streams for autonomous maritime use cases across 250+ vessels. Implemented embedded ML models in Flink with ONNX and built RAG + LLMOps/agent evaluation, achieving +15% fuel savings and <10ms inference latency.
Senior Data Engineer (Flink Streaming)
CMA-CGM
Sep 2022 - Dec 2024 (2 years 3 months)
Built and operated a SmartShip real-time streaming platform and stateful Apache Flink pipelines with exactly-once semantics, RocksDB state, and checkpointing. Designed the Kafka backbone at fleet scale and delivered Iceberg lakehouse sinks plus hybrid Flink/Spark batch-and-stream pipelines, including an AWS cloud migration.
Data & Streaming Engineer (Kafka/Flink)
CMA-CGM
Sep 2021 - Sep 2022 (1 year)
Refactored monolithic SQL batches into Kafka + Flink streaming jobs, supported by Spark batch pipelines and orchestration via AWS Lambda and Step Functions. Bootstrapped the real-time backbone (AWS MSK/Kinesis/Glue), built feature engineering pipelines to Iceberg, and optimized cloud cost.
Cloud ML Engineer & Data Scientist
EDF Renewables
Nov 2020 - Sep 2021 (10 months)
Developed and deployed predictive maintenance models for wind and solar assets using sensor telemetry, including automatic shutdown for ice detection. Built ingestion and transformation pipelines for ML training features on Azure/Databricks and applied constrained convex optimization using Gurobi and CPLEX.
Data Scientist (Actuarial Pricing)
AXA France IARD
Mar 2020 - Nov 2020 (8 months)
Built supervised churn models for auto insurance (logistic regression, gradient boosting, and calibration) and integrated them into an internal pricing engine. Developed dynamic pricing and price elasticity analysis with SHAP-based explainability, using end-to-end PySpark pipelines on Databricks with MLflow for tracking and industrialization.
Machine Learning Engineer Intern
GrandShooting
Mar 2019 - Aug 2019 (5 months)
Developed computer vision models end-to-end, including data labeling, TensorFlow/Keras training, and deployment via Flask REST APIs for real-time classification. Performed internal AutoML (hyperparameter tuning/model selection) and integrated data using GCP services such as BigQuery and Firebase.
Education
Degrees, certifications, and relevant coursework
IMT Atlantique
Engineering Degree, Mathematics & Computational Engineering
2018 - 2020
Engineering degree in Mathematics & Computational Engineering at IMT Atlantique (formerly Mines Telecom Bretagne), covering topics such as machine learning/deep learning, constrained optimization and operations research, and stochastic modeling. Coursework also included object-oriented programming plus SQL/NoSQL databases, with development in Python, Java, and C++.
Tech stack
Software and tools used professionally
Apache Spark
AWS Glue
Apache Flink
Apache Hive
GitHub
GitLab
Kubernetes
GitHub Actions
GitLab CI
Pandas
PySpark
PostgreSQL
MongoDB
Cassandra
Hadoop
RocksDB
Yarn
Databricks
Terraform
Java
TensorFlow
MLflow
scikit-learn
Keras
Kafka
MQTT
Windows
Firebase
AWS Lambda
Serverless
Kafka Streams
Airflow
s3-lambda
SQL
XGBoost
CatBoost
Apache Iceberg
Temporal
LangChain
Convex
Port
Langfuse
ONNX Runtime
Agentic
LangGraph
Loops
Gurobi
Availability
Location
Authorized to work in
Job categories
Skills
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