Vit Listik resume

I'm an enthusiastic software engineer interested in DevOps, web technologies, and machine learning. Currently, I lead a team focusing on logging infrastructure, which is a part of an internal cloud at Seznam.cz. I prefer cooperation and open communication within the team, and I demand code reviews for our codebase.

I am also using convolutional neural networks as part of my Ph.D. research. I focus on email spam detection in cooperation with the Email.cz team. My contribution lies in a multi-dimensional distributed clustering of data extracted from images contained in email messages.

WORK EXPERIENCE

Lead Software Engineer Seznam.cz - infrastructure team

7/2020 - present

I lead an internal logging team (part of Seznam.cz internal cloud - scif.cz).
My key contributions are scaling the solution to reliably and effectively process over a million log messages per second using open‑source (Apache Kafka, Grafana Loki, and ElasticSearch) and in‑house components (mostly written in Golang).

Managing people with focus on delivering features and personal growth
Implemented high performance Kafka to Grafana Loki sender in Golang
Automation - Gitlab CI, Terraform, Kubernetes, and Ansible
Cooperating on internal cloud design decisions
Solving production on-call incidents

Python/C++ developer Seznam.cz - Email.cz team

7/2014 - 7/2020

Biggest freemail provider in Czech Republic (~50M emails/day)
Anti-spam, Data Processing (Hadoop, Spark), Elasticsearch, Machine Learning (NLP, CNN), Neural Nets (Keras, Tensorflow), Reliable scalable services, Linux

Image processing pipeline (Design and implementation, Convolutional NN)
Email statistics aggregation pipeline - DB writes optimization (Golang, multi-DC replication)
Email security - integration of DMARC, DKIM and SPF
Aerospike DB (key-value), Elasticsearch, Hadoop (Map-reduce, Spark), Distributed storage
Reading group - organizer, speaker. Created opportunity for others to share knowledge

Freelance Web developer Founder at Web-kladno.cz - ID 87582961

2008 - present

Web applications and presentations - backend (PHP), frontend (JS, HTML5, CSS3)

EDUCATION

Czech Technical University in Prague (CTU)
Faculty of Electrical Engineering (FEL) Artificial Intelligence
Working on thesis (finished all courses)

7/2015 - present
Ph.D.
part-time

Topic: Email image spam detection using high-dimensional stream clustering

Supervision: Prof. Ing. Václav Hlaváč, Csc. and Ing. Jan Šedivý, Csc.
Convolutional NN, Tracking image detection, User reaction prediction, OCR, clustering

CTU, FEL, Software Engineering
Ended by the final state exam

7/2013 - 6/2015
Masters

Master Thesis: Detecting Phishing Emails in Czech Language for Email.cz

Won Cisco Outstanding Thesis Award 2015
Machine Learning (NLP, Bag of Words, Decision trees), Python

CTU, Faculty of Biomedical Engineering (FBMI), Biomedical Informatics
Ended by the final state exam

7/2010 - 6/2013
Bachelors

Bachelor Thesis: Algorithms for Signal Processing in Respiratory Care

iMon - Real-time measuring of respiratory system parameters (C#, Ni-DAQ, Multithreaded)

PUBLICATIONS

V Listík, J Šedivý, V Hlaváč; Email Image Spam Classification based on ResNet Convolutional Neural Network; ICISSP 2020
V Listík, Š Let, J Šedivý, V Hlaváč; Phishing Email Detection based on Named Entity Recognition; ICISSP 2019
V Listík; CNN based near-duplicate image detection used for email spam detection; Poster 2019
Thesis supervision

PROJECTS

YAP - Yet Another Pipeline

2019 - present

ML, Pipeline, Golang

Stalker

2018 - present

Active window tracking, Time management, Statistics, Rclone, Python

Datasets

2016 - present

Organizing and searching data sets, experiment consistency and repeatability
Based on Goods: Organizing google’s datasets. Python, Flask, OSS, Docker

Web applications and presentations

2005 - present

Surfarena.cz - Custom made reservation system for indoor surfing, PHP
Presentation websites - Mostly in PHP and JS. Wordpress or custom made CMS

SKILLS

Languages

Czech - Native speaker
English - Full working proficiency
German - Limited working proficiency

Machine Learning, Data Processing, Scalability, Database systems (SQL, NoSQL), DevOps, Docker, Cloud, Git, Web technologies, POSIX, OSS
Languages: Python, GoLang, PHP, C++, JS

Other

Driving license class B

INTERESTS AND ACTIVITIES

Programming

Programming competitions, Distributed Storage, Rust lang, Bitcoin
Public speaking - tivvit.cz/talks
GDG ČVUT [since 2013] Event organizer - i.e. GDG Garage Prague

Sports

Ping-pong, Swimming, Extreme races (Spartan race)
Martial Arts - Systema, Karate (1.kyu) - 3rd-grade trainer, Allkampf-Jitsu (2.kyu), Kickbox (3.kyu)