Piet Althoff - Senior Product Engineer / Automation Developer

Q: Where is Piet based?

Piet is based in Cologne, Germany .

Q: What languages does Piet speak?

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

Q: How many years of experience does Piet have?

Piet has at least 12 years of experience. During this time, Piet has worked in at least 4 different roles and for 13 different companies . The average length of individual experience is 1 year and 11 months . Note that Piet may not have shared all experience and actually has more experience.

Q: What is Piet's latest experience?

Piet's most recent position is Founder at RubberMetrics.com .

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

In recent years, Piet has worked for RubberMetrics.com , DEKRA SE , Value Finance GmbH , start.me B.V. , and Dumont Media GmbH .

Q: Which industries is Piet most experienced in?

Piet is most experienced in industries like Information Technology , Healthcare , and Government and Administration . Piet also has some experience in Education , Energy , and Media and Entertainment .

Q: Which business areas is Piet most experienced in?

Piet is most experienced in business areas like Information Technology , Product Development , and Marketing . Piet also has some experience in Business Intelligence and Research and Development .

Q: Which industries has Piet worked in recently?

Piet has recently worked in industries like Information Technology , Healthcare , and Education .

Q: Which business areas has Piet worked in recently?

Piet has recently worked in business areas like Information Technology , Product Development , and Marketing .

Recommended expert

Cologne, Germany

Check rate

Experience

Jan 2026 - Present

6 months

Founder

RubberMetrics.com

Self-hosted table tennis equipment platform.
Development of a custom “Racket Builder” that uses a co-evolutionary genetic algorithm to identify, evaluate, and recommend the optimal combinations of racket blades and rubbers based on physics heuristics and player data within a search space of over 4 billion combinations.
Development of a custom fully automated web crawler to capture equipment specifications, integrating an automated pipeline for image normalization as well as data harmonization via DeepSeek.
Cloudflare Edge Workers written in Rust to perform low-latency data searches and offload computationally intensive simulations from the main server.
High performance and accessibility standards across a large Nuxt 4 codebase achieving 95–100/100/100 Lighthouse scores.

Dec 2024 - Jun 2025

7 months

Senior Frontend Developer

DEKRA SE

Complex migration of the international DEKRA website (active across 20+ countries) from Nuxt 2 to Nuxt 3, ensuring zero outtime.
Delivered pixel-perfect frontend components strictly aligned with Figma designs, utilizing Storybook for isolated UI development and consistency.
Drove frontend performance improvements and modernized the architecture while working strictly within the unalterable boundaries of a legacy, multi-regional CMS.

Jul 2024 - Sep 2024

3 months

Senior Frontend Developer

Value Finance GmbH

Developed a customer-facing application for a team of realtors to manage insurance and financial contracts, providing real-time insights into various insurance products.
Implemented a complex, reactive SVG visualization that displays key contract metrics for client presentations.

Apr 2024 - Jun 2024

3 months

Lead Architect

start.me B.V.

Served as lead architect for updating a large SaaS platform with several million users from Vue 2 (SPA) to Nuxt 3 (SSR).
Coordinated the upgrade process to enhance web performance and maintainability.
Mentored two nearshore developers on best practices in software development, code quality, and UX/UI considerations to ensure user-centric design and accessibility.
Initiated and led the development of new interface concepts and widgets to improve user interaction and visual appeal while maintaining high performance and responsiveness across devices.

Jun 2022 - Mar 2023

10 months

Senior Frontend Developer

Dumont Media GmbH

Successfully relaunched all of Dumont’s major online newspapers (Kölner Stadt-Anzeiger, Express, Kölnische Rundschau) with Nuxt 3.
Handled business logic, including teaser arrangement, revenue-related issues (ads, placements, logic), SEO topics, personalization features (including regionalized news and premium features), and search functionality with interpretation of misleading links.

Apr 2022 - May 2022

2 months

Lead Architect

drumcenter.de

Successfully relaunched a legacy Magento 1 online shop to Nuxt 2 with over 100 000 shop items.
Used heavy RegEx to polish item names and correct legacy/transfer errors.
Improved SEO and site speed significantly; now ranking for “Drum” related search terms above musicstore.de in Cologne.

Mar 2022 - Apr 2022

2 months

Senior Frontend Developer

Generali Insurance Group

Wrote an internal-use script in TypeScript and Node.js to clean up and summarize large amounts of customer data from various Excel files and transform them into a unified JSON dataset.

Feb 2021 - Jun 2025

4 years 5 months

Frontend Developer

ENPOLITE - ISEA of RWTH Aachen University

Developed a website presenting a Lithium Battery Aging research project using Nuxt 2, Vuetify 2, Nuxt 3, Vuetify 3, and Netlify.
Made the non-responsive Vega Data Visualization library responsive.
Implemented lazy loading of multiple large JSON datasets to save bandwidth and improve UX.
Created hidden pages for researchers to discuss unreleased datasets.

Feb 2021 - May 2021

4 months

Frontend Developer

Convidera GmbH

Brought Nitrex Steel Furnaces UIs into the Web 3.0 industry project using Vue 3 and GraphQL.
Worked with a 0.5 million LOC German legacy code base and collaborated with offshore designers and backend developers.

Jun 2020 - Nov 2020

6 months

Frontend Developer

Dermanostic GmbH

Optimized site speed, performed Webpack pruning, and implemented SEO improvements using Nuxt 2 and Google Analytics.
Developed custom tree-shaking for Vue-Bootstrap and broke the page into lazy-loaded components, reducing onload time from 1220 ms to 380 ms.
Achieved #1 ranking in Germany for search terms like “dermatologie app”, “hautarzt app”, and “hautarzt online”.

Jun 2017 - Mar 2018

10 months

Lead Architect

Primed Marketing Agency (by Fedor Holz)

Scraped and analyzed 2.5 million Instagram accounts daily using a custom-written Instagram API via Puppeteer.
Served as the first developer of the company.
Built a botnet used by the European Commission in Vienna.

Jun 2016 - Jun 2023

7 years 1 month

Frontend Developer

Phobius VR-Phobia Treatment

Developed several phobia treatment sites using Nuxt 2 and Google Analytics.
Optimized UI/UX, conversion funnels, site speed, and SEO.
Achieved position 1 on Google Austria above Wikipedia for several phobia-related sites.
Delivered some of Google’s infoboxes from phobius.at instead of Wikipedia.
Acquired 90% of customers via SEO as the first developer of the company.

Jun 2013 - Mar 2018

4 years 10 months

Founder

Diplomaps (Own Project)

Scraped and analyzed tens of thousands of international diplomatic and economic news items daily using Node.js (worker threads) and later Go.
Presented the project to the Policy Planning Staff of the German Federal Foreign Office in Berlin.

Industry Experience

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

Experienced in Information Technology, Healthcare, Government and Administration, Education, Energy, and Media and Entertainment.

Information Technology

Healthcare

Government and Administration

Education

Energy

Media and Entertainment

Business Area Experience

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

Experienced in Information Technology, Product Development, Marketing, Research and Development, and Business Intelligence.

Information Technology

Product Development

Marketing

Research and Development

Business Intelligence

Summary

I am a senior JavaScript developer with 11 years of experience building data-heavy web products, automation pipelines, crawlers, internal tools and AI-assisted workflows. My core stack is Vue/Nuxt, TypeScript and Node.js, backed by 7 years of Vue/Nuxt experience. I combine frontend architecture, backend automation, performance optimization and SEO to build practical, maintainable products from idea to production.

Skills

Vue 3, Nuxt 3/4, Typescript, Node.Js, Tailwind Css, Storybook, Playwright, Vitest, Supabase, Postgresql, Mongodb, Docker, Ai Flows, Llm Workflows, Code Agents, Web Crawling, Data Pipelines, Seo, Performance Optimization, Ssr, Frontend Architecture, Product Engineering, Automation

Languages

German

Native

English

Advanced

Education

University of Vienna

Biology - Genetics · Vienna, Austria

FH Jülich

Bio-Technology · Jülich, Germany

Einhard-Gymnasium

Aachen, Germany

Statistics

Experience

Total positions 13

Experience in Information Technology 10 y

Avg length 1 y 6 m

Longest experience 7 y

Expertise

Recent roles Founder, Senior Frontend Developer, Lead Architect

Main industries Information Technology, Healthcare, Government and Administration

Main business areas Information Technology, Product Development, Marketing

Profile

Created

June 2026

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Frequently asked questions

Have questions? Find more information here.

Where is Piet based?

Piet is based in Cologne, Germany.

What languages does Piet speak?

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

How many years of experience does Piet have?

Piet has at least 12 years of experience. During this time, Piet has worked in at least 4 different roles and for 13 different companies. The average length of individual experience is 1 year and 11 months. Note that Piet may not have shared all experience and actually has more experience.

What roles would Piet be best suited for?

Based on recent experience, Piet would be well-suited for roles such as: Founder, Senior Frontend Developer, Lead Architect.

What is Piet's latest experience?

Piet's most recent position is Founder at RubberMetrics.com.

What companies has Piet worked for in recent years?

In recent years, Piet has worked for RubberMetrics.com, DEKRA SE, Value Finance GmbH, start.me B.V., and Dumont Media GmbH.

Which industries is Piet most experienced in?

Piet is most experienced in industries like Information Technology, Healthcare, and Government and Administration. Piet also has some experience in Education, Energy, and Media and Entertainment.

Which business areas is Piet most experienced in?

Piet is most experienced in business areas like Information Technology, Product Development, and Marketing. Piet also has some experience in Business Intelligence and Research and Development.

Which industries has Piet worked in recently?

Piet has recently worked in industries like Information Technology, Healthcare, and Education.

Which business areas has Piet worked in recently?

Piet has recently worked in business areas like Information Technology, Product Development, and Marketing.

What is Piet's education?

Piet attended University of Vienna for Biology - Genetics.

What is the availability of Piet?

Piet is immediately available full-time for suitable projects.

What is the rate of Piet?

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