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I'M A

SOFTWAREDEVELOPER

with experience throughout a variety of roles and the full technical stack, from individual contributor to architect and team lead. I like to involve myself deeply in the projects I work on and take ownership from the idea to delivery. Be it professionally or as a hobbyist, I thrive on getting things done.

7+ YEARS OF
PROFESSIONAL
EXPERIENCE
24+ TECHNOLOGIES
360° FULL-STACK
SYSTEMS
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WORK EXPERIENCE

Virtual Minds · Freiburg · hybrid

Team Lead / Senior Software Developer

Led a five-person engineering team developing and maintaining high-throughput advertising data systems and APIs. Also coordinated production infrastructure migrations, cross-team architecture knowledge sharing and workshops.

Virtual Minds · Freiburg · hybrid

Software Developer

Developed and maintained the Active Agent DSP backend, including real-time bidding at more than 400,000 QPS, Big Data pipelines, customer-critical APIs, legacy code migrations and production incident response.

Virtual Minds · Freiburg · on-site

Software Developer Apprentice

Built internal full-stack tools, supported an AngularJS-to-Angular migration, developed a full analytics suite with dozens of partners to detect billing deviations early before joining the Dynamic Optimization backend team.

TECHNOLOGIES

Backend, Data & Platforms

Distributed systems, data processing and delivery.

Java logo Java
Spring Boot logo Spring Boot
Apache Kafka logo Apache Kafka
Kubernetes logo Kubernetes
Docker logo Docker
Elasticsearch logo Elasticsearch
Apache Spark logo Apache Spark
Apache Airflow logo Apache Airflow
PostgreSQL logo PostgreSQL
JPA / Hibernate logo JPA / Hibernate
Lombok logo Lombok
Jenkins logo Jenkins
Linux logo Linux
Git logo Git
Further experience

REST APIs · Protocol Buffers · Apache Thrift · Aerospike · Kotlin · CI/CD

Full-Stack Applications

Web interfaces and Frontend Frameworks.

TypeScript logo TypeScript
JavaScript logo JavaScript
React logo React
Next.js logo Next.js
Angular 2+ logo Angular 2+
AngularJS logo AngularJS
Tailwind CSS logo Tailwind CSS
Material UI logo Material UI
Further experience

Vue.js · Svelte

Testing & Operations

Rigorous testing for safe delivery, monitoring and incident response.

JUnit logo JUnit
Mockito logo Mockito
Testcontainers logo Testcontainers
Prometheus logo Prometheus
Grafana logo Grafana
Opsgenie logo Opsgenie
Further experience

Unit tests · Integration tests · System tests · Custom testing frameworks · On-call duty · Incident response · Alerting

WHAT OTHERS SAY

“It was a pleasure to work with Wendelin. Wendelin was leading the team at the time I joined it. Wendelin’s technical expertise is truly remarkable. He consistently tackled complex challenges and was able to offer valuable guidance whenever needed. His depth of knowledge made a significant impact on our projects, and his ability to communicate complex concepts clearly and concisely was invaluable to the team. Beyond his technical strengths, Wendelin excelled in creating a supportive and collaborative environment. He took the time to listen, provided constructive feedback, and was always available to help others. I am confident that any team would be lucky to have him.”

INDEPENDENT PROJECTS

Other projects

Websites and tools with a smaller scope.

AccSaber Reloaded activity feed and ranking interface

AccSaber Reloaded

Open-source contributions to a Beat Saber ranking platform used by more than 124,000 players. Designed and implemented the new user landing page with social rankings, a score feed and advanced filtering, plus client and backend utilities such as batch playlist downloads.

  • TypeScript
  • Java
  • Spring Boot
  • Vue 3
  • PostgreSQL
Hohwald Musig website with music and event information

Hoh’wald Musig

Website for a traditional folk music group with a live display of upcoming events. A custom admin interface, database and API manage the event data.

  • JavaScript
  • Scala
  • Spring Boot
  • Svelte
  • PostgreSQL
Weingut Wisser website showing the winery and its wines

Weingut Wisser

Website for a family winery and farm in the Glottertal, presenting wines, the farm shop and holiday apartment.

  • JavaScript
  • HTML
  • CSS
  • Bootstrap
Galerie Angela Wisser website with an editorial artwork collage

Galerie Angela Wisser

Minimalist online gallery for a large collection of oil paintings.

  • JavaScript
  • HTML
  • CSS

Contributions, Tools & Prototypes

And many more unpublished and minor projects! Check out my GitHub if you want to start digging...

CONTACT ME

Have a role or project in mind? hi@wendelin-wisser.de Write me an email