Competency Profile
Qualifications
Languages · CEFR Scale
Role Allocation · ERS
Work History
11/2025
present
present
AI Innovator & Developer
Freelance, Berlin
- Design and implement AI agent workflows using the Anthropic Claude SDK (direct API, Node + Express proxy, Claude Code, MCP-Server)
- Develop and apply a Specification-Driven Development (SDD) workflow for AI: specs first, code second - producing maintainable, reproducible and scalable software products, coded mainly by GenAI.
- Build human-in-the-loop feedback processes and agentic orchestration pipelines
- Build mostly clientside run lightweight web apps (no frameworks; HTML/CSS/JS)
02/2017
09/2025
09/2025
Head of Department · IT Lead · STEM Teacher
Ernst-Reuter-Schule, Berlin
Promoted to Head of Department · 08/2021
- Led end-to-end migration of school management system and full IT infrastructure modernisation for 1,200 users
- Requirements engineering and stakeholder alignment across users, leadership, government entities, and service providers
- Ensured system availability, IT security, and service quality including support structures and documentation
- Managed procurement, vendor relations, risk assessments, and compliance for science facilities
- Taught AP Physics and senior Computer Science, including Agile, Scrum, and Kanban
03/2014
12/2015
12/2015
Online Tutor & Educational Content Creator
Sofatutor GmbH, Berlin
- Developed and produced digital learning content for a scalable online education platform
- Translated complex scientific topics into structured, accessible formats
07/2008
08/2009
08/2009
Sonar Operator
German Navy
- Monitored and analysed acoustic signals in a safety-critical operational environment under strict security protocols
- Supported data-based operational decision-making
Education
Second State Examination
SenBJF Berlin
08/2017 – 02/2019
M.Ed. Physics & Computer Science
Freie Universität Berlin
10/2014 – 07/2017
B.Sc. Physics & Computer Science
Freie Universität Berlin
10/2013 – 09/2014
B.Sc. Physics
Jacobs University Bremen
08/2010 – 08/2013
Projects
Kanban Agile Agents (KAA) - A Kanban Board integrating agentic AI
Specifications Driven Development · Agentic AI · Agile · Human-in-the-Loop · Project Management
A specs-first webapp for orchestrating AI agents on a kanban board alongside human workflows.
Small Web Tools
Webapp · AI · Prototypes
A growing selection of small projects I am building with AI and my take on the Specs-Driven-Development (SDD) approach.
School Management System Migration
School admin software · Cloud · IT Infrastructure
End-to-end migration improving administrative efficiency and data management across the organisation
DashingCV - This online CV
Dashboard inspired CV · Information Representation
A dense, information-rich interactive CV.
References
His work consistently and in every respect met our highest expectations.
— Principal, Ernst-Reuter-Schule
Through his team-oriented, calm and supportive manner, Mr Karlsson was extraordinarily valued and well-liked by colleagues, students, and superiors alike.
— Principal, Ernst-Reuter-Schule
He made a significant contribution to an open, cooperative and modern working culture.
— Principal, Ernst-Reuter-Schule
His conduct was exemplary and of the highest integrity at all times.
— Principal, Ernst-Reuter-Schule