About Me
I'm Leander Ziehm — a software engineer with strong focus on Python, FastAPI, Docker, and cloud-ready applications. I build backend services, integrate ML workflows, and deliver maintainable full-stack products.
Skills
Backend Engineering
Building APIs with Python and FastAPI, integrating databases, and ensuring performance and scalability.
Frontend Development
Developing modern UIs with React, TypeScript, and Angular; optimizing for accessibility and UX.
DevOps & Infrastructure
Containerization with Docker, Compose, CI/CD pipelines, and monitoring using Grafana.
Database Design
Designing and optimizing relational schemas, SQL queries, and PostgreSQL/Redis integration.
AI & Data
Implementing ML pipelines, RAG systems, and model integration for production workflows.
Tools & Workflow
Linux, Vim, Git, and automation for efficient development on VPS and cloud setups.
Experience
AI Software Developer Intern — BMW Group
- Developed and maintained FastAPI and Flask backends for AI integration.
- Built automated data pipelines using Python, Pandas, and SQL.
- Deployed dashboards in Power BI and Angular for real-time monitoring.
Product Owner — relyon AG
- Led the 0CodeKit SaaS API platform from MVP to production.
- Managed backlog, sprints, and stakeholder communication.
- Oversaw development of a GDPR-compliant B2B product.
Freelance Engineer — Fiverr / Projects
- Completed over 100 freelance projects in Python, C#, and web dev.
- Built MVPs, fixed critical bugs, and delivered consulting sessions.