Florian Heinze Developer, Freelancer, Founder

message ät florianheinze.de
Anton-Flettner-Str. 3
14542 Werder (Havel)

Building awesome stuff is what I love! As a Full-Stack Developer and Prompt Engineer, I'm all about turning great ideas into reality. Got a brilliant product concept? Let's chat today and kickstart it tomorrow! 😎

I'm not just a tech guy — I'm a leader who listens, cares, and empowers. Trust is key, and it's a two-way street. With a broad background in software engineering and founding, I have a keen sense of what works and how to improve things.

I am a person who takes up responsibility, I like to work with full power and I still want to have fun. Let us connect and start the journey! 🚀

Experience

worldscore founding

since 2023
  • AI CO2 emission benchmarking tool. Partly as a member of the Carbon13 accelerator program..
  • Engineered innovative prompt techniques to extract numbers in a reliable and scalable way.
  • CTO
  • prompt engineering openai reactjs tailwindcss cloudflare

green account freelance

in 2023 • 5 month
  • Geo information inquiry process and form that increased the conversion rate by 100%.
  • Leading an agile process to build a full stack MVP.
  • Interim Head of Tech
  • reactjs typescript hasura postgresql postgis

Planetly employee

until Feb. 2023 • 3 years
  • Carbon and ESG accounting platforms.
  • Engineered and implemented two complex user interfaces from scratch.
  • Team lead
  • typescript reactjs mui aws

Experience One freelance

in 2019 • 6 month
  • Agency project for a big automobile company.
  • Implementing site functionalities and responsive motion designs in an enterprise CMS environment.
  • scss typescript vanilla js gulpjs aem reactjs

craw.ly freelance

in 2018 • 1 year
  • Next generation website crawler (private alpha).
  • Planned and implemented the crawler with its middleware, database and user interface in a container infrastructure.
  • Solo developer
  • node.js reactjs feathersjs css3 mongodb docker cloud

Neko Calc founding

since 2018
  • Collection of online calculators, each with instant results.
  • Multilingual and -regional implementation and syntax parsing.
  • php7 l10n cdn css3 svg responsive

Aperto freelance

in 2017 • 3 month
  • Two consecutive projects.
  • Admin interfaces, one of them from scratch.
  • angular typescript redux bootstrap-4 agile

onBill freelance

in 2015/2016
  • Billing software in the cloud.
  • Planned and implemented the software, database layout, and user interface.
  • Lead developer
  • node.js strongloop api angularjs mongodb css

Outfittery freelance

in 2013 • 1 year
  • Internal web app to filter, arrange and order outfits.
  • Implementing widget based custom administration interface.
  • Chrome extension for simplifying internal processes.
  • Technical communication with the stylists.
  • javascript extjs chrome-extension groovy scrum

vsChart.com founding

from 2010 • 5 years
  • Dynamic tabular product comparisons.
  • Platform to collect knowledge in a clean, structured and semantic form.
  • Crowdsourcing via wiki functionality for each separate data point.
  • php semantica-data mongodb crowdsourcing

mail.de freelance

in 2010/2011 • 1 year
  • Custom web-based e-mail client.
  • Implementing complex web app like interfaces.
  • javascript mootools css scrum

biobay founding

from 2008 • 4 years
  • Web platform for a sustainable, ecological and healthy lifestyle.
  • With a market place, geo search, news system, and community features.
  • Custom, fully integrated implementation.
  • CTO
  • symfony doctrine php mysql css sysadmin

Comspace employee

until 2009
  • Medium sized web agency.
  • Implemented lots of custom software like a survey platforms, shops, CMS.
  • php cms e-commerce mysql javascript

Side projects

Tobny

since 2023
  • AI search agent as browser side panel.
  • Developing an experimental chat agent and implementing it as a browser extension.
  • prompt engineering model training typescript browser extension

Experimental browser

in 2017
  • Web browser for experts with a command line interface.
  • electron node.js css3 desktop-app

Natural language processing

until 2016
  • Parsing natural text and extracting the knowledge.
  • Making knowledge accessible via chatbot like interface.
  • nlp stanford-parser mariadb d3.js

Languages & Interests

German is my native language, my English is fluent and I am used to multilingual teams.

I like to build custom furniture – from shelfs to room filling projects. I also like walks through nature and cities.