Open to opportunities

Quý Nguyễn Tử

@qunguynt

Message

I build reliable data warehouses and ETL pipelines across cloud and on-premise environments.

Germany

Message

What I'm looking for

I'm looking to build and operate reliable data warehouses and ETL/ELT platforms, translating ambiguous stakeholder needs into practical designs. I value hands-on delivery, cloud and on-premise systems, data quality, and opportunities to learn new tooling.

At FMS GmbH, I own an ETL platform processing several GB daily with zero downtime, migrated multiple TB through staged cutovers, and optimized Apache NiFi paths by 30%. I build SQL Server and PostgreSQL reporting data marts using Python, dbt, and reproducible validation for analysts and data scientists.

At Conuti, I deliver high-frequency Kafka and RabbitMQ processing for SAP-integrated energy-market data, with Kubernetes, AWS, Terraform, and GitHub Actions. Earlier, I scaled e-commerce backend services at Unitedprint.com, reducing database and cache response times fivefold.

Experience

Work history, roles, and key accomplishments

Current

Senior Data Engineer / Data Analyst

Current

FMS GmbH

Jul 2025 - Present (1 year 2 months)

Owns an ETL platform processing several GB per day with zero downtime, including versioning, automated backup/restore, and rehearsed disaster recovery. Models DWH/data marts with dbt and complex SQL on MS SQL Server and PostgreSQL, and optimizes NiFi paths to run 30% faster.

ETL ELT DBT SQL MS SQL Server PostgreSQL Apache NiFi Python Jupyter Data Marts REST APIs Data Quality Disaster Recovery Versioning Backup And Recovery

Current

Senior Data / Platform Engineer

Current

Conuti GmbH

Jul 2022 - Present (4 years 2 months)

Builds asynchronous, high-frequency processing over Kafka and RabbitMQ for SAP-integrated billing data, with idempotent consumers and schema contracts. Manages Kubernetes (AWS EKS and on-premise) with Terraform and GitHub Actions, cutting image build time from 60+ minutes to under 2.

Kafka RabbitMQ Kubernetes Terraform GitHub Actions Apache NiFi Python Grafana Loki AutoScaling Root Cause Analysis

Senior Developer

Unitedprint.com SE

Oct 2019 - Jul 2022 (2 years 9 months)

Developed backend services and internal APIs for a high-traffic e-commerce platform using PHP/Laravel and React.js, containerized with Docker and scaled on Kubernetes/AWS. Optimized databases and caches across MySQL, Redis, and CouchDB, reducing response times by a factor of 5.