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Tim Fiedler

Senior Software Engineer & Cloud Architect

I combine strategic Cloud Architecture with hands-on coding expertise in Python & Rust. Specialized in Data Engineering, Legacy Modernization, and integrating Generative AI into enterprise environments.

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20+ Years
Engineering Experience
Cloud Native
AWS / GCP / Azure
Hands-on
Coding Architect

Tech Stack & Expertise

Software Engineering

Production-ready code, TDD, and Clean Architecture for complex backends.

Python (Expert) Rust (Adv) FastAPI Django PyTest Axum

Cloud & DevOps

Design and securing of scalable infrastructures (IaC) and CI/CD.

GCP AWS Azure Kubernetes Terraform IAM/Security

Data & AI

Enterprise Data Engineering and integration of Generative AI (LLMs).

Snowflake BigQuery RAG/LLM LangChain Polars Vector DBs

Selected Projects

A selection of my work as Architect and Lead Engineer.

OVYAPP GmbH (MedTech)

Tech Lead & Cloud Architect

MDR Cloud Architecture

Responsible for technical cloud strategy and compliance in the MedTech sector. Design and implementation of an MDR-compliant (Medical Device Regulation) Google Cloud infrastructure. System hardening and IAM implementation to protect sensitive health data.

GCP MDR-Compliance Python BigQuery Security
NEXT Kraftwerke

Senior Engineer & DevOps

Legacy Modernization

Modernization of the trading platform and CI/CD transformation. Migration of critical queues from Huey to Celery & Redis to increase reliability. Migration of pipelines from Jenkins to Azure/GitHub Actions incl. Security Scanning.

Django Kubernetes Azure Redis Refactoring
EnBW

Senior Data Engineer

Snowflake & AWS

Building a scalable Data Warehouse solution with Snowflake and AWS. Implementation of complex ETL pipelines and Infrastructure as Code using AWS CDK and dbt. Performance optimization through migration to Polars.

Snowflake AWS dbt Polars FastAPI
Union Investment

Principal Data & AI Architect

AI / LLM

Introduction of Generative AI in the banking environment. Design of a secure RAG architecture (Retrieval Augmented Generation) for using LLMs on internal bank data. Development of an automated testing suite for LLM outputs.

Azure OpenAI LangChain VectorDB Celery
RTL Broadcasting

Tech Lead Big Data

Rust & Big Data

Homogenization of the data landscape and development of a Google Cloud Big Data Plattform. Use of Rust and Polars for high-performance processing of streaming data.

Rust Polars GCP Kubernetes
re-minds GmbH

Rust Developer

Python to Rust

Complete migration of a critical invoice processing system from Python to Rust for maximum performance in the cloud.

Rust Firebase Performance
EWE Trading

Senior Consultant

Algo-Trading / High-Perf

Development of a High-Performance Algo-Trading Platform for intraday power trading. Implementation of complex business logic in a message-based system (RabbitMQ).

Pandas/Numpy RabbitMQ MongoDB TDD