Tobias Jennerjahn

Resume

Professional Experience

Since 2025

Founder & Developer - Increader.com

Solo Venture

  • Designed and built a productivity app for incremental reading and spaced repetition.
  • Implemented a custom reading mode, global annotations across document types and AI summaries.
  • Continuously iterating based on personal use and aiming to contribute to open-source communities.

Oct. 2022 – Feb. 2023

Tutor for "Software Engineering"

University of Leipzig, Leipzig

Supervision of a semester-long group project within the course framework.

Key Focus Areas:

  • Teaching modern web development methodologies
  • Introduction to Git, CI/CD pipelines, Docker
  • Supervising planning, development and deployment of web applications

Sept. 2021 – May 2022

Fullstack Web Developer (Freelance)

Self-employed, remote

Independent development of complex web applications.

Highlights:

  • Built a financial platform with invoicing, payment processing, referral program, admin functions
  • Technology stack: Svelte (incl. component library), GraphQL, NestJS with TypeScript, MongoDB
  • Focus on rapid iteration while maintaining maintainability
  • On-premise deployment and system integration

Oct. 2015 – Aug. 2016

Federal Volunteer Service (BFD)

DLRG, Nationwide

Support in organizing and implementing relief measures during the migration crisis.

Additional Responsibilities:

  • Administrative tasks in daily operations
  • Development of an automated feedback evaluation tool with OCR and computer vision

Education

2021–2025

B.Sc. Computer Science

University of Leipzig

until 2015

Abitur / General Higher Education Entrance Qualification

European School Gymnasium Bad Nenndorf

Additional

Sept. 2023

Swiss AI Safety Camp

Two-week continuing education program on technical, societal and safety-relevant aspects of modern AI systems

Technical Skills

Languages:

TypeScript3 yrs
Freelance projects & web applications
Python2 yrs
ML projects & tool development
Java2 yrs
University projects & Spring applications
C#1 yr
Basic knowledge and first projects

Frameworks:

Svelte3 yrs
Freelance & rapid prototyping
React2 yrs
Client projects & frontend development
Spring1 yr
University group projects

API & Databases:

PostgreSQL3 yrs
Freelance & web applications
MongoDB2 yrs
Flexible data structures
GraphQL3 yrs
API design & integration
REST4 yrs
Fullstack projects

Infrastructure:

Git6 yrs
Daily workflow
Linux5 yrs
Dev environment & server admin
Docker3 yrs
Service containerization
Kubernetes1 yr
Test deployments
Azure1 yr
University context
Vercel2 yrs
Client deployments

Languages

GermanNative speaker
EnglishFluent in speaking and writing

Interests

Homelab

Self-hosted services and infrastructure for testing tools, deployment setups, and smart home automations

AI Safety & Effective Altruism

Exploring the long-term impacts of advanced AI systems and engaging with the effective altruism community through events and self-study

Ergonomic Keyboards

Designing and building custom split keyboards – from circuit design to case construction