Justas Azna, Software Developer in Copenhagen, Denmark
Justas Azna

Software Developer in Copenhagen, Denmark

Member since August 25, 2016
Justas is a web developer and DevOps engineer based out of Denmark. For the past three years, he has been a partner in a web development company. He works mostly on Python and Node.js-based applications with a focus on APIs, software architecture, and deployment automation.
Justas is now available for hire


  • Novozymes A/S
    React, Node.js, Linux, Ceph, RabbitMQ, Solr, Hadoop, Spark, HBase, Django...
  • Fadeit
    Amazon Web Services (AWS), DigitalOcean, Docker, Puppet, MySQL, PostgreSQL...
  • Alexandra Institute
    Linux, PostgreSQL, MySQL, Java, PHP, Python



Copenhagen, Denmark



Preferred Environment

Git, Vim Text Editor, Arch Linux, Red Hat Linux, Debian Linux

The most amazing...

...thing I've developed is a D3.js-based linked data explorer. I used architecture defined in SoLiD-spec for doing a decentralized social web.


  • Software Development Consultant

    2018 - PRESENT
    Novozymes A/S
    • Developed features for an internal big data platform using Python and Node.js.
    • Implemented parsers and ingested large volumes of raw DNA and protein data into HBase using Spark and map-reduce.
    • Backfilled Solr search indices and HBase tables using Spark and map-reduce.
    • Created performance profiles and improvements of critical back-end algorithms using cProfile and Python.
    • Parallelized BLAST (Basic Local Alignment Search Tool) workers to get faster protein and DNA sequence alignment results using Python, RabbitMQ, and multiprocessing.
    • Implemented data access restrictions for HBase and Solr.
    Technologies: React, Node.js, Linux, Ceph, RabbitMQ, Solr, Hadoop, Spark, HBase, Django, Python
  • Software Engineer/Partner

    2013 - PRESENT
    • Developed software and provided system administration for IPVISION A/S: Mobile Virtual Network Operator (MVNO).
    • Created software and provided system administration for Grundfos A/S. Worked on the implementation of their IoT platform, Gatesense.
    • Built software for Alexandra Institute A/S. Worked on an open data portal implementation.
    • Developed software for Bitshifters ApS: Implemented a next-generation building intelligence management (BIM) system.
    • Managed projects, developed software, and did DevOps for Visualize Wealth, LLC. Worked on releasing the MVC of Viziphi.com, a financial risk analysis system.
    • Developed software for Davoodi Pty, Ltd., working on the Automed.io platform.
    • Built Hopper.dk, a local service search engine.
    • Created Playsignage.com, a digital signage SaaS.
    • Developed software for Sirenia ApS. Worked on CCOW context management registry using Go.
    Technologies: Amazon Web Services (AWS), DigitalOcean, Docker, Puppet, MySQL, PostgreSQL, PHP, CoffeeScript, JavaScript, Node.js, Python
  • Software Developer

    2014 - 2014
    Alexandra Institute
    • Implemented a free software plugin for CKAN open data portal software. The plugin enables real-time events from CKAN's datastores.
    • Implemented Drupal/CKAN integration for user management.
    • Developed a RESTful API for the Gatesense IoT platform using Java (Spring MVC).
    Technologies: Linux, PostgreSQL, MySQL, Java, PHP, Python
  • Software Developer/Sysadmin

    2013 - 2014
    • Re-implemented an old phone usage accounting system.
    • Implemented a call center wallboard solution, an order handling system integrated with a payment gateway and two different mobile network operators (MNO), and self-service portals for B2B and private users.
    Technologies: WebSockets, ZeroMQ, Perl, Debian, MySQL, Python, PHP, Drupal, Asterisk
  • Software Development Intern

    2012 - 2012
    • Wrote a backup utility using C#.
    • Conducted research of real-time web libraries for .NET.
    Technologies: Windows Presentation Foundation (WPF), C#, .NET


  • "Play" Digital Signage SaaS

    This is my company's product, a digital signage SaaS. In this project, I am working on a RESTful API, puppet infrastructure code, and digital signage player software.


  • Languages

    Markdown, Python 3, CoffeeScript, JavaScript, Python, Go, HTML5, RDF, C#, PHP, Perl, Java, Scala
  • Frameworks

    Apache Spark, Flask, Express.js, Django, .NET, Windows Presentation Foundation (WPF), Spark, Hadoop, Bootstrap 3, Scrapy, Sails.js
  • Libraries/APIs

    Node.js, Stormpath, ZeroMQ, React, Auth0 API
  • Tools

    NGINX, Git, GitHub, Bitbucket, GitLab, Atlassian Suite, Solr, Biopython, RabbitMQ, Apache, Vagrant, Docker Compose, Vim Text Editor, Asterisk, Puppet, Jenkins, Jekyll
  • Platforms

    Linux, Docker, Amazon Web Services (AWS), Debian Linux, Red Hat Linux, Arch Linux, Drupal, Debian, DigitalOcean
  • Storage

    HBase, PostgreSQL, MySQL, CouchDB, Redis, Ceph, MongoDB
  • Paradigms

    MapReduce, Kanban, Test-driven Development (TDD), REST, Continuous Deployment, Scrum, Agile, Functional Programming
  • Other

    Unix Shell Scripting, Technical Project Management, Payment Gateways, WebSockets, Lean Startups


  • Professional Degree in Software Development
    2013 - 2014
    Business Academy Aarhus - Aarhus, Denmark
  • Academic Profession Degree (AP) in Computer Science
    2009 - 2013
    Business Academy Aarhus - Aarhus, Denmark

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