Digging deeper into blockchain multiverse. This is most exiting tech evolution witch is happening right in front of our eyes with so many things to try on and spend countless nights on it.

Key responsibilities:• Planning and directing the company for long term consequences for the enterprise when choosing a technical direction, proposing a technology investment, driving harmonisation of the technology environments.• Providing guidance to solution and software architects in the development of architectures for complex implementations. • Leading the development and hands-on implementation of a selected future state solution and integration architectures in an organised… Show more Key responsibilities:• Planning and directing the company for long term consequences for the enterprise when choosing a technical direction, proposing a technology investment, driving harmonisation of the technology environments.• Providing guidance to solution and software architects in the development of architectures for complex implementations. • Leading the development and hands-on implementation of a selected future state solution and integration architectures in an organised and cohesive manner.• Ensuring that designed and reviewed solutions conform to architectural requirements such as scalability, maintainability, reliability, extensibility, usability and securityKey tech stack:• baremetal kubernetes with custom control plane elements like schedulers, network controllers• heavily invested into time series databases, Prometheus+Thanos, OpenTSDB, VictoriaMetrics• big ELK deployments with mixed topology over multiple DC's and very different hardware setups Show less

It’s hard to describe my 10’yars experience @ Vertex, so I will dig only into technical highlights where I participated myself. Coded bunch of tools and systems with PHP, Ruby, Perl, NodeJS and Java. SMPP protocol implementations in Perl and NodeJS, some crazy stuff with PHP Threads (yes it’s true, threads exists in PHP)Designed and did initial setup of NoSQL cluster for big data needs in company, witch includes Hadoop, Hive, HBase, OpenTSDB, Bosun, Scollector, Flume, StatsD, we collect… Show more It’s hard to describe my 10’yars experience @ Vertex, so I will dig only into technical highlights where I participated myself. Coded bunch of tools and systems with PHP, Ruby, Perl, NodeJS and Java. SMPP protocol implementations in Perl and NodeJS, some crazy stuff with PHP Threads (yes it’s true, threads exists in PHP)Designed and did initial setup of NoSQL cluster for big data needs in company, witch includes Hadoop, Hive, HBase, OpenTSDB, Bosun, Scollector, Flume, StatsD, we collect logs through flume, automatically fetch virtual machine stats with scollector, push metrics from code via statsd and visualise all things in HUE, Bosun and Grafana. In average day it collects ~500m-1b metrics and ~100-200m log entries.Also did servers management with Citrix xen 5.x and 6.x with CentOS as quest os. Used tools like Capistrano for writing down server deployment scripts and configurations. Used Jenkins for CI pipelines until GitLab CI.Deployed high availability databases and web services, using Haproxy, Percona/Galera, Redis, Memcache.Did lot of direct connections to biggest mobile operators in the world, managed network and VPN operations between VertexSMS and operators, implemented end-2-end encryptions for some clients/operators. I am familar with biggest operators systems.In middle of 2016 I started to move non essential systems to Kubernetes (at the time 1.3v) running on CoreOS, configured it to work simontaniously with GitLab and Gitlab CI, automatically collect all container logs with Elastic search/Kibana and Fluentd, use Prometheus operator to automate metrics collections from nodes and web services and report back to GitLab for coders review. Wrote Calico plugin with GO for OVH VRack support (to assign one or more RIPE IP’s to pod's). Did heavy testing of GlusterFS, CephFS. Show less

Project aim was to create network where you can find professionals with data given by users from their social networks, like linkedin, it searched for persons in multiple levels of users connections and provided best way to contact given person thought already existing user connections. I was only one dev here, so my role included DB architecture and whole coding, I decided to use Neo4j for relationship storage, Cassandra (0.4v) via Thrift as main storage engine for user data, messaging and… Show more Project aim was to create network where you can find professionals with data given by users from their social networks, like linkedin, it searched for persons in multiple levels of users connections and provided best way to contact given person thought already existing user connections. I was only one dev here, so my role included DB architecture and whole coding, I decided to use Neo4j for relationship storage, Cassandra (0.4v) via Thrift as main storage engine for user data, messaging and analytics. Everything was coded in PHP. Show less

I participated in few areas here:- mobile billing (direct billing from wap/mobile sites)- bulk SMS- mobile TV streaming, this part is one of most exiting experiences from "Verozona", I learned great deal about streaming, video and audio codecs, operators network topology and performance, got familiar with FreeBSD/Solaris systems and software like MPEG4IP, FFMpeg and other great open source projects.

My job here was to build and maintain mobile content and billing solution, main company goal was to sell pictures/melodies and other VAS products via mobile to consumers. Here I learn a lot new things about operators, technologies they using and got deep understanding about mobile messaging.- SMPP connections with LT/LV operators, first kannel touches.- coded mobile number identification system for LT/LV customers- coded mobile billing system, direct billing from wap/mobile… Show more My job here was to build and maintain mobile content and billing solution, main company goal was to sell pictures/melodies and other VAS products via mobile to consumers. Here I learn a lot new things about operators, technologies they using and got deep understanding about mobile messaging.- SMPP connections with LT/LV operators, first kannel touches.- coded mobile number identification system for LT/LV customers- coded mobile billing system, direct billing from wap/mobile page- builded online system for melodies and pictures management- implemented wap push technics for high quality content- implemented sms binary messaging for old phones, that support simple MIDI and WBMP pictures- tracking system to track sells via TV, news papers and magazinesI quit the company because after building whole system, there was no much new challenges. Show less

Founder/Dev/Ideas - of first (non operator) wap portal with social functionality in Lithuania, at the time I took approach to design it as virtual city with virtual marriages, jail for angry banned community members, ability to build your own profile/wap page, online games and many other features that was basically text based, it was hard to do something in 128x96 screens with WML :) Anyway it gained huge success in local market, kept me busy for few years learning how to optimise databases… Show more Founder/Dev/Ideas - of first (non operator) wap portal with social functionality in Lithuania, at the time I took approach to design it as virtual city with virtual marriages, jail for angry banned community members, ability to build your own profile/wap page, online games and many other features that was basically text based, it was hard to do something in 128x96 screens with WML :) Anyway it gained huge success in local market, kept me busy for few years learning how to optimise databases and code to keep up with growing scale.One of most important thing from this experience for me as dev, that this page was like getaway for some people to start learning to code and start to create things themself, in few years LT wap community grew at exponential rates and sites were appearing like mushrooms after rain. Even after 10 years I still meet people who first steps as dev's was at this page and this is big for me! Show less