Fabian Linzberger, Developer in Stockholm, Sweden

Fabian Linzberger

Software Developer

Location
Stockholm, Sweden
Toptal Member Since
January 31, 2018

Fabian would characterize himself as a data science and deep learning enthusiast, a functional programmer, and a full-stack engineer with DevOps experience. He has over a decade of experience working within the industry using a variety of languages (Erlang, Haskell, Python, JavaScript, Scala, Clojure, Ruby, and more) and who enjoys working in environments that are open to creativity and values working solutions to problems above all.

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Portfolio

Schibsted
TensorFlow
Sellpy
Keras, Haskell, Scikit-learn, Python, Node.js, Redux, React, JavaScript
TrueAccord
JavaScript, Pandas, Python, Scala

Location

Stockholm, Sweden

Availability

Part-time

Preferred Environment

PyTorch, TensorFlow, Keras, Python, Git, Emacs

The most amazing...

...thing I've coded is an AI to play the game of Go.

Work Experience

2018 - PRESENT

Machine Learning Engineer

Schibsted
  • Trained and deployed ad content classification and clustering models.
Technologies: TensorFlow
2015 - 2017

CTO

Sellpy
  • Implemented an online marketplace site from scratch for Sellpy.se/market; using React, Redux, and Immutable.js with a Node.js back-end.
  • Designed and implemented a machine learning model for the likelihood of selling secondhand goods.
  • Set up continuous deployment and a review and the prioritization process for the engineering team.
  • Migrated from a Parse platform as a service to Node.js on Heroku and other cloud services.
  • Developed and designed a recommendation system for recurring users of an online marketplace.
Technologies: Keras, Haskell, Scikit-learn, Python, Node.js, Redux, React, JavaScript
2014 - 2015

Senior Software Engineer

TrueAccord
  • Developed and maintained an online debt collection platform in Scala and JavaScript.
  • Implemented per state time of the week and time-of-day compliance logic for calls and texting.
  • Set up metric monitoring and an alerting integration with Datadog.
  • Developed analytics for A/B testing of customer collection messages.
  • Implemented a limited rate integration for sending texts through Twilio.
Technologies: JavaScript, Pandas, Python, Scala
2012 - 2013

Senior Software Engineer

Campanja
  • Developed and maintained the real-time tracking website/conversion tracking product in Erlang (with peaks of 3,000 requests per second).
  • Designed and implemented a batch analytics platform based on Cascalog and Amazon EMR.
  • Led a team of six engineers.
Technologies: R, Ruby, JavaScript, Clojure, Erlang
2010 - 2012

Software Developer

Klarna
  • Rewrote and rearchitected the payment processing API.
  • Troubleshot the production system and database.
  • Designed and implemented an automated Linux configuration management system based on Opscode Chef.
  • Coached the engineering teams in how to use Git during the migration from Subversion.
Technologies: Chef, Git, Erlang
2006 - 2008

Systems Engineer

Mayr-Melnhof Karton GmbH
  • Introduced configuration management using Puppet for about 200 Linux servers and routers.
  • Took part in a large voice over IP rollout.
  • Designed and implemented Kerberos and an LDAP infrastructure for Linux with an active directory integration.
Technologies: VMware, Python, Puppet, Debian

Skills

Languages

JavaScript, Erlang, Python, Haskell, Ruby, PureScript, Clojure, R, Scala

Frameworks

Redux, Django, Express.js, Play, AWS EMR

Libraries/APIs

React, Node.js, Scikit-learn, TensorFlow, Keras, Pandas, PyTorch, Mandrill API, SendGrid API, Twilio API, XGBoost, PostgREST

Paradigms

Functional Programming

Other

Machine Learning, Artificial Intelligence (AI), Deep Learning, Computer Vision, Natural Language Processing (NLP), Bayesian Statistics, Amazon Kinesis, GPT, Generative Pre-trained Transformers (GPT)

Tools

Git, Emacs, Chef, Puppet, VMware, SWIG, Ansible, RabbitMQ, AWS ELB

Platforms

Docker, Debian, Heroku, Algolia

Storage

Datadog, CouchDB, Riak, Google Cloud Datastore, Google Cloud Storage, Amazon S3 (AWS S3), MongoDB, PostgreSQL, MySQL