Tibor Claassen - Principal Engineer & Technical Lead

Q: Where is Tibor based?

Tibor is based in Berlin, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Tibor speak?

Tibor speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Tibor have?

Tibor has at least 12 years of experience. During this time, Tibor has worked in at least 4 different roles and for 4 different companies . The average length of individual experience is 3 years and 11 months . Note that Tibor may not have shared all experience and actually has more experience.

Q: What is Tibor's latest experience?

Tibor's most recent position is Fractional CTO at eHealth Africa GHM .

Q: What companies has Tibor worked for in recent years?

In recent years, Tibor has worked for eHealth Africa GHM , tech-lead.io , and pitch.com .

Q: Which industries is Tibor most experienced in?

Tibor is most experienced in industries like Information Technology and Healthcare .

Q: Which business areas is Tibor most experienced in?

Tibor is most experienced in business areas like Information Technology , Strategy , and Product Development . Tibor also has some experience in Operations .

Q: Which industries has Tibor worked in recently?

Tibor has recently worked in industries like Information Technology and Healthcare .

Q: Which business areas has Tibor worked in recently?

Tibor has recently worked in business areas like Information Technology , Strategy , and Product Development .

Recommended expert

Berlin, Germany

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Experience

Jan 2025 - Dec 2025

1 year

Remote

Fractional CTO

eHealth Africa GHM

Led the transition of an IoT cold-chain monitoring system to sustainable in-house ownership at a resource-constrained NGO.
Worked hands-on across distributed AWS/Terraform infrastructure, Golang services, and Kafka Streams.
Established a pragmatic technical strategy balancing system reliability with organisational capacity, including the Databricks platform migration, from cloud account setup to technical direction for the data engineers.

Jan 2024 - Present

2 years 8 months

Hybrid

Freelancer and Consultant

tech-lead.io

Building software products end to end, from technical strategy to hands-on delivery. Simplicity matters.

Applies 25+ years of experience in software development and a functional programming mindset to build resilient, maintainable systems that are optimised for change.
Values clear abstractions over ready-made solutions. Works as a pragmatic architect, balancing long-term system health with the realities of shipping fast under real-world constraints.
Practises product-driven engineering, connecting technical decisions directly to user value and business outcomes.

Jan 2018 - Dec 2024

7 years

Principal Engineer

pitch.com

Hands-on development of Pitch's collaborative, local-first presentation app in ClojureScript on an event-driven architecture.
Shaped company-wide technical strategy and established a modular frontend architecture that scaled with both the company and the product, sustaining a rapid deploy cadence under heavy concurrent development.
Led high-impact initiatives: the AI slide generator, a full text-editor rewrite, and the canvas layout refactor.

Jan 2012 - Dec 2014

3 years

Co-Founder & CTPO

coreon.com

Co-founded an enterprise B2B SaaS platform for multilingual knowledge management, owning full-stack architecture and product end to end.
Combined modern web technology with linguistic data processing to serve enterprise customers in the language industry.

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology and Healthcare.

Information Technology

Healthcare

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Strategy, Product Development, and Operations.

Information Technology

Strategy

Product Development

Operations

Summary

Principal Engineer and Technical Lead with 25+ years building software products end to end, from technical strategy to hands-on delivery.

Strong expertise in functional programming and event-driven systems, built on a broad engineering background spanning multiple stacks, industries, and product domains. Values clarity and an emergent design over applying a particular technology or ready-made solution.

Optimises for change, not throughput: the real bottleneck is rarely writing the code, but the shared understanding, the right abstractions, and a sense of ownership and accountability within the team.

Skills

Functional Programming
Event-Driven Systems
Distributed Systems
Product Engineering
Full-Stack Web Development
Technical Leadership
Emergent Architecture
Technical Strategy
Clojure
Clojurescript
Datomic
Postgresql
Docker
Aws
Kafka
Typescript
React
Node
Python
Graphql
Terraform

Languages

German

Native

English

Advanced

Statistics

Experience

Total positions 4

Experience in Information Technology 11.5 y

Avg length 3 y 4 m

Longest experience 6 y 11 m

Expertise

Recent roles Fractional CTO, Freelancer and Consultant, Principal Engineer

Main industries Information Technology, Healthcare

Main business areas Information Technology, Strategy, Product Development

Profile

Created

July 2026

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Frequently asked questions

Have questions? Find more information here.

Tibor is based in Berlin, Germany and can operate in on-site, hybrid, and remote work models.

Tibor speaks the following languages: German (Native), English (Advanced).

Tibor has at least 12 years of experience. During this time, Tibor has worked in at least 4 different roles and for 4 different companies. The average length of individual experience is 3 years and 11 months. Note that Tibor may not have shared all experience and actually has more experience.

Based on recent experience, Tibor would be well-suited for roles such as: Fractional CTO, Freelancer and Consultant, Principal Engineer.

Tibor's most recent position is Fractional CTO at eHealth Africa GHM.

In recent years, Tibor has worked for eHealth Africa GHM, tech-lead.io, and pitch.com.

Tibor is most experienced in industries like Information Technology and Healthcare.

Tibor is most experienced in business areas like Information Technology, Strategy, and Product Development. Tibor also has some experience in Operations.

Tibor has recently worked in industries like Information Technology and Healthcare.

Tibor has recently worked in business areas like Information Technology, Strategy, and Product Development.

Tibor is immediately available part-time for suitable projects.

Tibor's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.

To hire Tibor, click the Meet button on the profile to request a meeting and discuss your project needs.

Daily Rate Distribution

0 1 2 3 4

<€640 €640-800 €800-960 €960-1120 €1120+

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

1200

900

600

300

Daily rate avg. 940 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1200

900

600

300

Median rate 1000 €

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.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.