Damjan Kuznar

Damjan Kuznar

$80/hr
Senior Python backend engineer
Reply rate:
-
Availability:
Full-time (40 hrs/wk)
Age:
43 years old
Location:
Skofja Loka, Gorenjska, Slovenia
Experience:
16 years
Curriculum Vitae Personal information Name and surname Address Phone E-mail Damjan Kužnar Grenc 20a, 4220 Škofja Loka, Slovenia-- Work experience Employer Position held Main activities and responsibilities Dates Employer Position held Main activities and responsibilities Dates Employer Position held Main activities and responsibilities Dates Employer Position held Main activities and responsibilities Dates Boston Consulting Group Freelance Python developer (Toptal) Developed single page web app with Vue.js for visualizing machine learning and optimization results, developed REST API for serving data to web app, deployed using docker-compose and make for service life-cycle management (updating, restarting, etc.), dockerized automated web app tests with Selenium December 2018 - Current Blocktrade AG, Landstrasse 97, 9494 Schaan, Liechtenstein VP of Engineering Overseeing development of an exchange, managing a team of developers, back-end development, introducing DevOps principles of fast flow, fast feedback and continuous improvement March 2018 - Current Bitstamp LTD, 5 New Street Square, London EC4A 3TW, United Kingdom Senior developer and Team lead Leading development of various features on trading platform and integrations with various external services, reducing technical debt, improving platform stability and performance December 2016 – March 2018 Jozef Stefan Insitute, Jamova cesta 39, 1000 Ljubljana Assistant researcher Data analysis, research & development of novel artificial intelligence algorithms, project management, web application development, system administration, project proposal writing, scientific paper writing March 2010 – December 2016 (full time), December 2016 – December 2017 (part time) Employer Position held Main activities and responsibilities Dates OCKHAM d.o.o., Kmečka pot 20, 1000 Ljubljana Part time contractor Development of J2EE administrative GUI for 3rd party recommendation module for BeeSmart IPTV platform May 2010 – November 2010 Employer Position held Main activities and responsibilities Dates Optilab d.o.o., Teslova 30, 1000 Ljubljana Part time contractor Developing fraud detection prototypes for health insurance companies Employer Position held Main activities and responsibilities Laboratory for Artificial Intelligence, Faculty for Computer and Information Science, Tržaška 25, 1000 Ljubljana, Slovenia Researcher on European project X-Media Development of knowledge management system, development of novel machine learning methods, data analysis March 2006 – February 2010 Dates Employer Position held Main activities and responsibilities August 2009 – March 2009 CODES d.o.o., Koprska ulica 92, 1000 Ljubljana Student employee Developing custom extensions for Datalab's Patheon ERP Dates May 2004 – December 2004 Education Institution Level in national classification Dates Faculty for Computer and Information Science, University of Ljubljana, Slovenia 9. level (Doctorate in machine learning) Institution Level in national classification Dates Faculty for Computer and Information Science, University of Ljubljana, Slovenia 7. level (Bachelor degree) Institution Level in national classification Dates I. Gymnasium in Celje, Kajuhova 2, 3000 Celje, Slovenia 6. level 2006 - On hold 2001 - 2006 1997 - 2001 Selected project KYC integrations Credit Card integration Crypto wallet integration Metis Swingy IJS TV Integration with several service providers of automated KYC verification and development of load balancing logic to achieve maximum allowed KYC verification throughput Role: Lead developer Components: Individual integrations components with several KYC providers based on multiprocessing approach with rate limiting, load balancing component for balancing verification requests across KYC integrations and retry functionality Technologies: Python, MySQL, multiprocessing Integration with credit card service provider to enable credit card deposits on an exchange Role: Lead developer Components: Credit card payment flow component, secondary (failsafe) payment checking component, credit card transactions export for accounting Technologies: Python, MySQL, XML, CSV Integration with several cryptocurrency wallets for providing the deposit and withdrawal functionality on an exchange Role: Main developer Components: withdrawals and deposits component, transactions export for accounting Technologies: Python, MySQL, cryptocurrency wallets (clients) System for early detection of learning difficulties Role: Project manager, system architect and lead machine learning backend developer Components: Machine learning backend service for detecting learning difficulties from student grades and attendance records, teachers’ web app and students’ smartphone apps for preventing/alleviating learning difficulties Technologies: Python, Pandas, Scikit-learn, MongoDB, multiprocessing, push notifications, Lavarel framework, SAML RESTful API backend for Swingy game on tablets and smartphones Role: Lead backend developer of RESTful API Technologies: Django, PostgreSQL, Nginx, Docker Video streaming system for Jozef Stefan Institute Role: System architect and lead developer Components: Streaming server that can switch from different video sources (e.g. prerecorded video/images, IP camera streams, USB camera), Raspberry Pi clients for video stream playback on monitors, Arnes RTMP streaming server, Web app for remote controlling the streaming server and RPi clients Technologies: FFMPEG, MLT Framework, RTMP, Metasploit, Python, Raspberry Pi, Docker Virtual assistant Web based intelligent virtual assistant platform Role: Project manager, system architect, lead developer and maintainer Components: Web API for question answering, virtual assistants’ administration web app, JavaScript, HTML5 & CSS virtual assistant app, native smartphone app Technologies: Python, HTML5, JavaScript, PostgreSQL, Memcached Crypto currency arbitration Prototype for automated trading of crypto currencies (Bitcoin, Litecoin, etc.) using arbitration Role: Personal pet project Components: Module for scraping data from various virtual currency exchanges (Bitstamp, Kraken, etc.), module for finding arbitration opportunities based on graph theory (finding the most profitable paths between two nodes), web based UI for real time preview (using web sockets), module for automating the trades for arbitration opportunity. Technologies: Python, NetworkX, PostgreSQL, Bottle.py, JavaScript, web sockets Matching engine Proof-of-concept for low latency (less than 1 ms) synchronous matching engine with order book persistence and 5ms end-to-end latency through REST API interface. Role: Personal pet project Components: Simple REST API wrapper, matching engine Technologies: Golang, specialized high throughput database, LuaJIT Skills and competences Back-end Front-end Data Science Python: web applications (Django, Bottle.py), integrations with external services through web interfaces, web services/APIs, web sockets, scientific data analysis and computing, multiprocessing Java: J2EE applications PHP: Drupal, Joomla, custom scripts Databases: PostgreSQL, MySQL, MongoDB Bash scripting Docker: development and deployment Docker Swarm: production deployment JavaScript: JQuery, charting libraries (d3.js, raphael.js) HTML & CSS: Bootstrap, custom designs, responsive layouts Simple Android applications Machine learning applications & data mining Data analysis & visualization Development of novel machine learning methods Advanced use of machine learning software (Weka, Orange, Scikit-learn, Matlab) Video & image Streaming video applications using FFMPEG video library Video compositing using MLT Framework Web page design in Photoshop Miscellaneous Git source code management Linux system administration Project management using Jira End-user requirements acquisition System architecture Technical mentoring Technical & scientific writing Publications Author of Slovenian national patent in the field of machine learning titled “The process for the intelligent control of cooling devices”. Scientific publications: Damjan Kuznar, Rok Piltaver, Anton Gradisek, Matjaz Gams, Mitja Lustrek: An intelligent system to monitor refrigeration devices. Expert Systems 34(5) (2017) Ales Tavcar, Damjan Kuznar, Matjaz Gams: Hybrid Multi-Agent Strategy Discovering Algorithm for human behavior. Expert Syst. Appl. 71: 370-382 (2017) Damjan Kuznar, Ales Tavcar, Jernej Zupancic, Mihai Duguleana: Virtual Assistant Platform. Informatica (Slovenia) 40(3) (2016) Jernej Zupančič, Damjan Kužnar, Bostjan Kaluza, Matjaz Gams: Two-Stage Negotiation Protocol for Lowering the Consumption of Convexly Priced Resources. Proceedings of the 2014 Workshop on Intelligent Agents and Technologies for Socially Interconnected Systems (2014) Damjan Kuznar, Martin Mozina, Marina Giordanino, Ivan Bratko: Improving vehicle aeroacoustics using machine learning. Eng. Appl. of AI 25(5):- (2012) Languages Slovene (native), English (speaking, writing)
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