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Marcus Lehmann

Full Stack Developer & Data Expert

Remote from Stuttgart

  • 48.7784
  • 9.18
High Potential
  • Indicative rate €700 / day
  • Experience 7+ years
  • Response rate 100%
  • Response time 24h
Propose a project The project will only begin when you accept Marcus's quote.

Availability not confirmed

Part time, 1 day a week

Propose a project The project will only begin when you accept Marcus's quote.

Location and geographical scope

Location
Stuttgart, Deutschland
Remote only
Works remotely most of the time

Verifications

Influence

Stack Overflow

Stack Overflow : megges megges
  • 500 Reputation
  • 9 Bronze
  • 3 Silver
  • 1 Gold

Languages

  • Deutsch

    Native or bilingual

  • Englisch

    Full professional proficiency

  • Französisch

    Basic

Categories

Skills (38)

Marcus in a few words

Hallo, ich bin Marcus - ein leidenschaftlicher Data Nerd & Full Stack Developer & Entrepreneur.

Seit meiner Schulzeit liebe ich die Entwicklung von Webanwendungen. Heute bin ich mehr denn je davon begeistert, wie Technologie Dinge ermöglicht, die vor weniger Zeit undenkbar waren.

Meine aktuellen Schwerpunkte:
- Fullstack Entwicklung in der Cloud (Amazon Web Services)
- Data Collection (Public Data, Spatial Data, Site Scraping, API scraping)
- Machine Learning (XGBoost, scikit-learn, PyTorch, Tensorflow)
- Interactive Data Visualization (d3.js)

Haben Sie spannende Projektideen und wollen diese schnell und kompetent umsetzen?
Dann kontaktieren Sie mich für ein unverbindliches Beratungsgespräch.

Portfolio

Experience

ReachNow

Transportation

Interactive Vehicle ETA prediction visualization.

September 2019 - October 2019

For a shuttle service 3 different estimations of arrival time (ETA) are used. To track their performance over time and by the given circumstances these ETAs were collected and compared by their actual arrival time. An interactive visualization (Backend & Frontend) was created to analyze the different ETAs.
Amazon Web Services AWS Lambda AWS S3 AWS ECS Docker d3.js Flask Vue.js ol3js

ReachNow

Transportation

Frontend and Backend for managing models / clusters for a Fleet ML service

November 2019 - December 2019

A UI (and Backend for the Frontend) was built to make an ML solution easy to expand to new cities and easy maintanable. The UI makes it possible to manage and extend the services for people that are not deeply involved into the technical details. A specialty about the project is the storage of the meta data (cities, clusters, POIs) via GitHub API to allow the 4-eyes principle via GitHub PRs and enable versioning and rollbacks.
Technologies
Amazon Web Services AWS ECS AWS S3 Docker GitHub API Python ol3js Vue.js tailwindcss

ReachNow

Transportation

Map Matching of vehicle position data

March 2020 - June 2020

Map Matching of vehicle position data
Input: Billions of noisy vehicle telemetry data points (position, direction etc.)
Output: Vehicle trajectories matched to street
The algorithm is scheduled periodically on AWS Batch to process historic telemetry data stored on S3. I used GraphHopper Map Matching and implemented a Particle Filter that leads to matched trajectories of high quality. The quality of the processed trajectories is measured and can be monitored using AWS CloudWatch.
Technologies
Amazon Web Services Docker Python AWS Lambda AWS S3 AWS Cloudwatch Pandas OSM Graphhopper

moovel Group GmbH

Transportation

Machine Learning Engineer

Stuttgart, Deutschland

October 2015 - September 2019

moovel Group GmbH is a subsidiary of Daimler AG that is focused on digital smart mobility products. I led a team of data engineers and data scientist and implemented data science services in the area of shared mobility that are running in some big cities in Germany.

ROOMAPS

Software Publisher

Founder & Software Engineer

Stuttgart, Deutschland

March 2013 - September 2015

I started working on indoor navigation services after finishing my thesis at the University of Stuttgart. With an initial funding we founded the company ROOMAPS that provided professional indoor mapping and navigation solutions. Our main projects have been in the area of intra-logistics and provided navigation to assembly lines at one of the biggest car manufacturers in Germany. Me and my team were acqui-hired by moovel Group GmbH in 2015.

Education

Certifications