Matthieu Blais
Verified Expert in Engineering
Data Engineer and Developer
Singapore, Singapore
Toptal member since May 27, 2026
Matthieu is a data engineer specializing in cloud-based data infrastructure on AWS and GCP, with deep expertise in Python, large-scale data platforms, FinOps, and SRE practices. He's built and scaled data platforms for Singapore Airlines and Jago Bank and contributed to Indonesia's first fully digital bank, growing from 3 million to 20 million customers. Matthieu's experience spans data and software engineering, from infrastructure to powering personalized customer engagement.
Portfolio
Experience
- Amazon Web Services (AWS) - 8 years
- Data Management Platforms - 8 years
- Apache Airflow - 8 years
- FinOps - 6 years
- Apache Kafka - 4 years
- Data Build Tool (dbt) - 4 years
- BigQuery - 4 years
- Google Cloud Platform (GCP) - 4 years
Preferred Environment
Amazon Web Services (AWS), Google Cloud Platform (GCP), Kubernetes, BigQuery, Apache Airflow, Data Build Tool (dbt)
The most amazing...
...project I've built is the Jago Bank data platform, scaling it from 3 million to 20 million users, meeting regulatory requirements, and reaching profitability.
Work Experience
Staff Engineer
Dkatalis
- Designed and built the GCP data platform supporting growth from 3 million to 20+ million customers, with the platform and tooling used by 50 engineers and analysts.
- Developed a real-time data synchronization service using Kafka and Kotlin for an event-driven customer engagement platform, replacing legacy offline processes.
- Implemented notification tracking and observability to improve customer experience across all communication channels and increase marketing customer engagement.
- Reduced BigQuery and GKE costs by 30% through targeted performance tuning and job optimization.
- Reduced CI/CD running time by 40% for DBT and Terraform workflows.
- Established SRE practices for data governance, security standards, and data quality monitoring. Implemented lineage tracking and access controls to meet regulatory and compliance requirements.
Data Engineering Lead
Singapore Airline
- Designed the AWS data platform to migrate from the proprietary ETL tool AbInitio to open-source technologies.
- Reduced ML model deployment time from months to days by designing and implementing a CI/CD MLOps framework using AWS SageMaker that is used by 20 data scientists.
- Built a self-service ingestion portal, adopted by 10+ business units, enabling non-technical users to onboard datasets for analytics, while safely handling sensitive data.
- Cut data platform infrastructure costs by 35% by optimizing AWS resource utilization and improving visibility into infrastructure usage.
- Built a data pipeline framework to move from code-based data ingestion to configuration-based data pipelines and reduce code maintenance.
Data Engineer
Mentorica
- Implemented a newsletter engine to personalize content for an eCommerce grocery store and increase customer engagement by 20%.
- Developed an app that displays insights from multiple retail touchpoints to improve the customer retail experience.
- Built a computer vision app to track retail footstore traffic to help retailers optimize their stores.
Experience
Le Petit Depot | eCommerce Website
Education
Master's Degree in Computer Science
ECE Paris - Paris, France
Certifications
CKAD: Certified Kubernetes Application Developer
The Linux Foundation
AWS Certified Solutions Architect Professional
Amazon Web Services
GCP Professional Cloud Architect
Google Cloud
GCP Professional Data Engineer
Google Cloud
Skills
Libraries/APIs
OpenCV
Tools
Apache Airflow, Google Kubernetes Engine (GKE), BigQuery, AWS Step Functions, Kafka Connect, GitLab CI/CD, Terraform, Claude Code, Amazon SageMaker, Abinitio, Grafana, Looker, AWS Glue
Languages
Python, SQL, Kotlin, Looker Modeling Language (LookML), PHP, Snowflake
Paradigms
DevOps, ETL, Business Intelligence (BI)
Platforms
Amazon Web Services (AWS), Google Cloud Platform (GCP), Kubernetes, AWS Lambda, Apache Kafka, Docker
Storage
Data Lakes, Data Pipelines, Redshift, Amazon S3 (AWS S3), Data Validation, Google Cloud SQL, Google Cloud Storage, PostgreSQL, Databases, MySQL
Frameworks
Grails, Spark
Other
Software Engineering, Cloud Architecture, Data Management Platforms, Data Engineering, Cloud Infrastructure, Cloud Services, Data Warehousing, Data Build Tool (dbt), FinOps, ELT, ETL Pipelines, Data Analysis, Artificial Intelligence (AI), Scalability, Data Transformation, Software Development, Google BigQuery, Amazon Redshift, Data Governance, Data Marts, Analytics, Data Modeling, Data Architecture, Identity & Access Management (IAM), API Integration, Infrastructure, IT Security, SecOps, IT Infrastructure, Information Systems, Cloud Migration, Cloud Computing, Cloud Storage, Data Security, Containers, Cloud Native Computing Foundation (CNCF), Front-end, Machine Learning, Data Science, Dashboards, Large Language Models (LLMs), Data Encryption, Encryption
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