What I work with

Skills

The languages, frameworks, and tools I reach for, and the projects and roles where I have actually put them to work.

I learned most of this the same way: pick a real problem, ship something, and keep the parts that survive contact with users. So rather than a wall of logos, each skill below comes with the projects, jobs, and studies that built it.

Proficiency reflects how confidently I can take something from idea to production, not just whether I have touched it once.

Languages

Python

8 yrs

Python is where I first taught myself to code in school. It's still my quickest path from idea to a shipped product, whether that's an ML experiment, a production API, or a small automation script.

Highlights

Related skills

Django
Pandas
NumPy
FastAPI
Beautiful Soup 4

Groovy

2 yrs

At Westend61 I look after Groovy/Grails services that power internal APIs, services and automation. The JVM roots keep everything familiar while Groovy's scripting side lets me land integration fixes and admin tools fast.

Highlights

Related skills

Spring Boot
Gradle
Maven
Spock
Groovy on Grails

Swift

1 yr

I picked up Swift to build NeatPass, a native iOS app for creating and managing Apple Wallet passes. TUM's iPraktikum deepened my iOS skills through a team project with industry partners. SwiftUI, SwiftData, and MapKit are now part of my daily toolkit.

Highlights

Related skills

SwiftUI
iOS Development
SwiftData
MapKit

AI & ML

Language Models

5 yrs

I have been hands-on with large language models since the first GPT-3 release. These days I design prompting strategies, RAG and MoE pipelines, and agent-style workflows that move past demos and deliver dependable value for teams.

Highlights

Related skills

OpenAI Models
Anthropic Models
Fine-Tuning

Machine Learning

4 yrs

Machine learning hooked me as soon as I started coding. I've built custom models, shipped applied projects at work, and now steer my bachelor's and then master's degree toward ML to go deeper.

Highlights

Related skills

ResNet
Image Classification
YOLO
PyTorch
TensorFlow

Web

Web Development

3 yrs

Shipping open source is nice, but real adoption needs a great interface. I grew from hand-written HTML and CSS to full TypeScript stacks, shipping sites like this portfolio and SaaS dashboards with resilient realtime backends and graceful fallbacks.

Highlights

Related skills

Vite
Tailwind CSS
Bootstrap
Shadcn/ui
Next.js

Cloud & Infrastructure

Docker

4 yrs

Docker used to feel intimidating, and now nearly everything I ship, from personal projects to university work and production services, runs in containers. It keeps environments predictable and turns deployments into a no-drama moment.

Highlights

Related skills

Containerization
Lambda Containers
CUDA Containers for ML

Networking

5 yrs

As Westend61's system admin I take care of everything an office might need. That mix lets me debug anything from flaky Wi-Fi to firewall oddities without drama.

Highlights

Related skills

Home Server
Firewalls
Tunneling
SSH

Cloud Computing

3 yrs

I leaned hard into cloud in 2024, mostly AWS. From containerised services to event-driven jobs, I automate the infrastructure so shipping features stays fast and safe.

Highlights

Related skills

S3
DynamoDB
ECR
EC2
EventBridge

Beyond the Code

Systems Thinking

Years of moving between software development, system administration, and teaching taught me to see technology as more than code. It’s an ecosystem. Managing servers, building APIs, and mentoring students all revealed how decisions ripple through a system. I’ve learned to think in connections, not components, designing solutions that stay coherent as they grow.

Highlights

Presentation

I genuinely enjoy crafting story-driven presentations. Weekly tutoring sessions and impromptu talks keep my pacing, visuals, and storytelling sharp. I'm also no stranger to presenting in front of large audiences.

Highlights

Entrepreneurship

I treat ideas like lean experiments: talk to users, validate quickly, understand the operations, and iterate until a metric actually moves. SaaS work, my stealth startup and BWL courses sharpen that mindset.

Highlights

  • First business license at age 182023
  • Stealth Startup2025 – Present
  • Private Tutoring Sessions2022 – Present
  • Lanfermann.DEV · IT Services2023 – Present