Thi Bich Lien Nguyen

DevOps Engineer

Gartenbau-Versicherung VVaG · Frankfurt/Rhein-Main · Hybrid

• Designed and built an internal production platform end-to-end, transforming previously manual and Word-based IT operations processes into structured, traceable digital workflows.
• Evolved the platform across multiple business processes with request lifecycle management, immutable history, two-stage approval workflows, validation, deduplication and audit-ready traceability.
• Grew the platform to approximately 81,300 lines of code, supported by around 2,220 automated tests, 86% code coverage and a SonarQube Maintainability Rating A.
• Established the engineering foundation around the application, including GitLab CI/CD, automated testing, security and quality controls, containerized development workflows and controlled production deployment.
• Introduced Engineering Governance and Production Provenance to make engineering decisions, code changes, deployments and production state increasingly transparent, verifiable and traceable.
• Designed enterprise integration patterns including OTOBO synchronization, API abstraction layers and transaction-safe external-system interactions, while building reusable platform components for multiple business domains.
• Took ownership beyond application development into production operations, environment separation, operational automation, runtime verification, technical documentation and ADR-based architectural decision records.
• Developed an Engineering Report to consolidate technical and operational evidence and provide visibility into the state of the production system.

Data Analyst

Gartenbau-Versicherung VVaG

• Advocate for scalable BI architectures, open-source technology stacks, agile methodologies and infrastructure automation.
• Identified critical architectural requirements for a modern, scalable enterprise data warehouse shortly after onboarding and delivered a strategic technical proposal based on open-source toolsets and Pipeline-as-Code principles.
• Designed and executed an initial Proof of Concept in the insurance claims domain over an 8-week sprint, including a containerized Docker environment, relational data models, robust CI/CD pipelines and a strategic roadmap for automated ETL orchestration.
• Engineered a follow-up Proof of Concept in December 2024 demonstrating end-to-end orchestration via Apache Airflow with 3 production DAGs.
• This architectural validation influenced the company’s executive decision in February 2025 to transition to a modern open-source core infrastructure stack based on PostgreSQL, GitLab and Airflow.
• Spearheaded the technical and structural layout of the open-source DWH pipeline ecosystem, prioritizing data transparency, workflow reproducibility and long-term maintainability.
• Engineered internal and regulatory compliance reporting layers and delivered advanced ad-hoc data analysis.
• Partnered with cross-functional departments to provide data-driven solutions supporting strategic reporting and leadership decision-making.
• Provided IT first-level data support and technical guidance across multiple operational business teams.

When a Django Website Becomes a Platform

Django Day Copenhagen 2026 · Conference Talk

How a personal Django website evolved into Website Studio through domain modelling, lifecycles and reusable platform capabilities.

#WirVsVirus Hackathon · CoronaBibliothekar

Rasa · Telegram · Facebook Messenger · Twilio

Core team contributor for CoronaBibliothekar, a Rasa-based chatbot designed to provide reliable COVID-19 information through messenger interfaces. Contributed to programming and testing during the #WirVsVirus Hackathon.

Business Intelligence Analyst

trendtours Touristik GmbH · Frankfurt, Hesse, Germany

• Built dashboards and an automated reporting system to control and measure data-driven multichannel marketing campaigns and analyse the performance of different marketing channels using transactional and web-tracking data.
• Worked on the development of a customer-loyalty scoring model using Python, dbt, SQL and Git. Analysed the performance of an existing ML model and delivered recommendations for improvement.
• Contributed to the development of a new ML model that was subsequently placed into production and passed A/B testing.
• Worked on an analytics web application integrating an ML model using Dash/Plotly, Python and SQL, including frontend design improvements and new frontend functionality built with Dash/Python.
• Developed a mailing-scoring concept to predict customers likely to purchase within the next 90 days.

Data Analyst

Cheil Germany GmbH · Schwalbach, Hesse, Germany

• Created dashboards and weekly/monthly performance reports for different business areas of SamsungZeil and delivered results to Samsung stakeholders.
• Conducted data analysis and delivered recommendations for improvement based on the results.
• Conceptualized and created a data warehouse design and implemented it using Python, SQL and Amazon Redshift / RDS.

Machine Learning Engineer

axxessio GmbH · Darmstadt, Hesse, Germany

• Set up hardware for the Voice Lab, identified improvement potential and wrote documentation for software and hardware testing.
• Developed concepts for voice-assistant use cases and a voice prototype using NLP/Python.
• Developed and implemented a chatbot using the Rasa framework in Python.

Research Assistant (Wissenschaftliche Hilfskraft)

Westfälische Hochschule · to Prof. Dr. Klaus Thiel

Data Science / Predictive Analytics

Data Science Intern

REWE Group · Cologne Bonn Region

• Conducted analysis of cause-and-effect relationships between target and training features.
• Used statistical techniques to evaluate time-series forecast metrics.
• Analysed promotion and price effects, based on which new training features were constructed.
• Performed outlier detection analysis comparing predicted versus actual sales.