Tim D.-Product Lead & Product Manager
Check rate
Experience
Product Owner
mkk meine krankenkasse
Product ownership for the new bonus component: a fully digital rewards program in the customer app, going live on 1.1.2027.
- Translated requirements from the business team, app team, and development into epics and stories, and managed delivery
- Designed interfaces between the app, Python backend, and health insurance systems (mkk API, 21c, d.3)
AI Project Consulting and Implementation
Tim Dethlefsen
Consulting on and delivering custom software and AI projects for mid-sized companies: connections between existing systems, automation, analytics, and assistants using their own data.
Product Advisor and Interim Product Manager
meinGPT
Strategic consulting and hands-on product management for a GDPR-compliant B2B AI platform.
- Shaped the roadmap and translated customer and market requirements into priorities
- Worked closely with the founders and development team through to release
Product Lead
Der Wertstoffpunkt
A digital platform connecting recycling service providers with customers. Defined the product scope and led the development of provider matching.
Product Owner, Customer App
Kalia Lab
Customer app (iOS and Android) and website for a healthcare company. Customers can view their personalized treatment plan and results, and book new appointments.
- Defined scope, rollout phases, and stories, and supported acceptance and launch
- App frontend connected to existing backend systems via REST APIs, with custom logic for each user
Co-founder and Product Lead
Notch
Collaboration platform for sales teams: closing deals and onboarding customers in one shared workspace. Built from scratch, €1.1 million pre-seed funding (including HTGF), exit in 2025.
- Responsible for product vision and roadmap, led user research with customers and prospects
- Turned requirements into stories and delivered them with the development team
- Led a cross-functional team, ran Sales and Customer Success myself
EXIST Fellow
Startup Port
EXIST founder grant concept for an AI-based quoting tool for CNC manufacturers. Product validation and market analysis led to acceptance into the EXIST program and the founding of Notch.
Product Manager
About You
Further development of the shopping app. Feature development and sprint planning, data analysis to improve the user experience and business impact.
UX Consultant
Bosch Software Innovations
Usability testing and user research for IoT tools, coordination with Design and Development.
Product Manager
GreenStone Energy
No-code platform for launching new energy brands. Feature scoping with the development team.
Web Developer
click solutions
Websites, online shops, and apps for agency clients and a repair platform.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Healthcare, Professional Services, Manufacturing, Energy, and Fashion.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Product Development, Information Technology, Marketing, Research and Development, Customer Service, and Sales.
Summary
I have been building digital products since 2018 in product roles, and since 2021 as a founder. I co-founded Notch, a B2B SaaS company, and led it as Product Lead from the idea through to its exit in 2025. Today, I advise companies on product and AI initiatives, take on temporary product responsibility, and build parts of the solution myself. I work at the intersection of users, business teams, and development: understanding what is needed, deciding what to build first, and making sure it gets delivered.
Skills
- Product Strategy
- Vision, Roadmap, And Prioritization, From 0 To 1 And For Existing Products
- Discovery And Research
- Interviews, Usability Testing, Prototyping, And Validation Before Building
- Planning And Scoping
- Structuring Requirements, Backlogs And Stories, Sprint Planning With The Team
- Technical Understanding
- Computer Science Studies, Hands-On Development Experience, Frontend, Backend, And Apis
- Stakeholders And Communication
- Bringing Business Teams, Development, Leadership, Customers, And Investors Together
- Ai And Automation
- Llm Products, Integrations, And Automation, Designed And Built
- Jira
- Linear
- Notion
- Figma
- Rest Apis
- Openapi
- Sql
- Typescript
- Next.Js
- Git
- Mixpanel
- Llm Apis
- Claude Code
- Codex
Languages
Education
National Kaohsiung University of Science and Technology
Computer Science · Taiwan, Province of China
Berliner Hochschule für Technik
M. Sc. · Computer Science for Digital Media · Berlin, Germany
Hochschule Emden/Leer
B. Eng. · Media Technology · Emden, Germany
Statistics
Experience
Expertise
Qualifications
Frequently asked questions
Have questions? Find more information here.
Tim is based in Berlin, Germany.
Tim speaks the following languages: German (Native), English (Advanced).
Tim has at least 10 years of experience. During this time, Tim has worked in at least 10 different roles and for 11 different companies. The average length of individual experience is 1 year and 10 months. Note that Tim may not have shared all experience and actually has more experience.
Based on recent experience, Tim would be well-suited for roles such as: Product Owner, AI Project Consulting and Implementation, Product Advisor and Interim Product Manager.
Tim's most recent position is Product Owner at mkk meine krankenkasse.
In recent years, Tim has worked for mkk meine krankenkasse, Tim Dethlefsen, meinGPT, Der Wertstoffpunkt, and Kalia Lab.
Tim is most experienced in industries like Information Technology, Healthcare, and Professional Services. Tim also has some experience in Energy, Manufacturing, and Fashion.
Tim is most experienced in business areas like Product Development, Marketing, and Research and Development. Tim also has some experience in Information Technology, Customer Service, and Sales.
Tim has recently worked in industries like Information Technology, Healthcare, and Professional Services.
Tim has recently worked in business areas like Product Development, Marketing, and Customer Service.
Tim holds a Master in Computer Science for Digital Media from Berliner Hochschule für Technik and a Bachelor in Media Technology from Hochschule Emden/Leer.
Tim will be available full-time from November 2026.
Daily rate distribution
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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