Erwin Feser, Software Developer in Villa General Belgrano, Cordoba, Argentina
Erwin Feser

Software Developer in Villa General Belgrano, Cordoba, Argentina

Member since January 31, 2012
Erwin has over a decade of experience programming in languages—primarily Python, but with experience in Haskell, C, and Java as well. He has developed major projects from scratch, helped define business logic beyond the technical sphere, and prides himself on his flexibility, adaptability, and proactivity. He keeps scalable architecture at the forefront and works constantly to improve and train new skills.
Erwin is now available for hire


  • Vium
    Python, Django, Django REST Framework, Django Suit, KairosDB, PostgreSQL...
  • Bytelion
    Python, Django, TastyPie, Celery, Heroku, MongoDB, MongoEngine, FreeBase...
  • Globant
    Python, Django, TastyPie, ElasticSearch


  • Django, 7 years
  • Python, 7 years
  • Heroku, 5 years
  • Django REST Framework, 4 years
  • Celery, 4 years
  • RabbitMQ, 2 years
  • Elasticsearch, 1 year


Villa General Belgrano, Cordoba, Argentina



Preferred Environment

Python, Django, DRF, Celery, Heroku

The most amazing...

...sites I've worked on are the back ends for,,, and


  • Python/Django Developer

    2015 - PRESENT
    • Created and improved many endpoints.
    • Wrote unit tests for endpoints and customized admin pages.
    • Created wizards and complex customizations in the admin site.
    • Improved performance by using background tasks with Celery.
    • Optimized code.
    Technologies: Python, Django, Django REST Framework, Django Suit, KairosDB, PostgreSQL, Docker, Cerberus
  • Senior Python Developer

    2014 - 2016
    • Programmed complex background tasks using Celery.
    • Did the entire back-end for a new social network.
    • Implemented MongoDB in Django as a parallel DB.
    • Built a complex and secure API.
    • Configured Heroku environments.
    • Configured a bid data external processor cluster and implemented periodic tasks.
    • Wrote a push notifications library and its administration site.
    Technologies: Python, Django, TastyPie, Celery, Heroku, MongoDB, MongoEngine, FreeBase, Push Notifications, PostgreSQL, R
  • Technical Leader

    2013 - 2014
    • Created the main portal for National Geographic.
    • Implemented a photo library.
    • Facilitated the publishing process for photos.
    • Built a reversion feature for all edited objects.
    • Made a reusable CMS for the YourShot project (also for NatGeo).
    Technologies: Python, Django, TastyPie, ElasticSearch
  • Python Developer

    2011 - 2013
    Santex America
    • Wrote a primitive format to MS Word (docx) and MS Word to a primitive format transcoder in Java for Webfilings company.
    • Wrote server account administration system in Python using Django. Runs in the browser.
    • Wrote a document library manager in Python using WebApp2. Runs over Google App Engine.
    • Wrote the project and branch manager in Python using Django Nonrel (NoSQL) and JavaScript.
    Technologies: Java, Python, Django, WebApp2, Google App Engine, NoSQL
  • Developer

    2010 - 2011
    Devar S. A.
    • Wrote an equivalence course-management web application in Java for SXXI University.
    • Wrote an institutional website in Python (Django) for Devartec.
    • Wrote an institutional website in Python (Django) for the Cidesca Foundation.
    Technologies: Python, Django, Java
  • Operator

    2009 - 2009
    E-NIX S.R.L.
    • Administrated and remotely supported the Linux Server, including firewalls, proxies, web, and mail servers.
    • Installed and configured remote monitoring and administrative tools, including Nagios, Webmin, and Gosa.
    • Developed a plugin for Nagios.
    Technologies: Linux Server, Naigos, Webmin, Gosa, Plugin development
  • Developer

    2007 - 2008
    Vates S.A.
    • Developed alarm-monitoring modules in C/C++ with TeMIP framework.
    • Implemented automatic report generation of service quality using XML, Java, and SQL.
    • Administrated the Unix server.
    Technologies: C, C++, TeMIP, XML, Java, SQL, Unix


  • Vium (Mousera) (Development)

    Django project with a complex API built with Django REST Framework. Lots of admin site customizations.

    Datastores: Postgres and KairosDB

  • Preferhired (Development)

    Entire back-end (API design, background services, unit tests, documentation, implementation, PayPal integration) built from scratch using Python 3, Django, DRF, and Celery (running on Heroku).

  • Samegrain (Development)

    New social network. Back-end implemented with Django and running on Heroku.

    Related technologies: Celery, MongoDB, RabbitMQ, Django Rest Framework, Tastypie, PubNub

  • NatGeo Homepage (Development)

    Complete back-end development using Django framework.

  • Equity App for Fundedbyme (Development)

    Social investment for startups. Back-end implemented with Django framework.

  • Academic-level Programming (Development)

    GNU/Linux kernel modules development (basic drivers). Simple file system implementation (FUSE).

    Debugging and testing tools: GDB, Valgrind, Check, Trace.
    Cooperative development tools: SVN.


  • Languages

    Python, XML, SQL
  • Frameworks

    Django REST Framework, Django, GeoDjango
  • Tools

    Celery, RabbitMQ, GitHub, Jenkins, Amazon CloudFront CDN, Graphene, PyCharm, Jira
  • Platforms

    Heroku, Linux, Google App Engine, Docker, AWS EC2, AWS Lambda
  • Other

    APIs, OpenDocument, Push Notifications, BrainTree, AWS Route 53, Wagtail CMS, Serverless
  • Libraries/APIs

    PubNub, Django-autocomplete-light, Freebase API, PayPal API, Apiary API, Google Places API, Zappa
  • Paradigms

    Agile Software Development, Agile
  • Storage

    Elasticsearch, AWS S3, PostgreSQL, MongoEngine, MongoDB, PostGIS, BigTable


  • Student degree in Computer Science
    2004 - 2011
    Universidad Nacional de Cordoba, FaMAF - Cordoba, Argentina

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