Yury Badalyants Email & Phone Number

Auckland, Nz

Auckland, New Zealand

Combination of backend development and data engineering. On the backend side, I primarily worked with Java, developing and supporting scrapers for various sites such as YouTube, Tumblr, and Wikipedia. Additionally, I have been improving a complex BitTorrent system that gathers information about user activity.Data engineering was mostly Scala development with a bit of Python. I handled large-scale data processing and analytics using technologies like Apache Spark, Apache Airflow, Amazon Redshift, MySQL, and DuckDB. I introduced and migrated all team pipelines to Airflow and was de facto the administrator of the company's Redshift cluster.The projects were hosted on AWS, utilizing a wide array of its services including S3, RDS (MySQL and PostgreSQL), EMR, DynamoDB, OpenSearch, and Kinesis.Among the interesting tasks, I can mention a custom query language I built on top of Elasticsearch. And I initiated and migrated the team's codebase into a monorepo, which greatly improved the development experience.

Novosibirsk Region, Russian Federation

2GIS is an online maps application (like Google Maps). I worked in two teams:1. Ads + Big Data team: Mostly worked on an HTTP backend for serving personalized ads. I also created a Kafka-to-HDFS connector with exactly-once delivery semantics using Akka Streams. Occasionally worked with Spark. Technologies: Akka, Kafka, Spark, Hadoop.2. Since November 2018, I have been part of the team focused on displaying products on the map. I participated in the architectural design of a whole new project from the start. I had a significant impact on the system in general and designed and implemented a few crucial components.The system was designed as a group of microservices, which are mostly streaming services based on Kafka. Some of them were built with the kafka-streams. But most of them were written in a purely functional manner using Typelevel libraries: cats, cats-effect (with the tagless-final), fs2, fs2-kafka, doobie, etc.Additionally, I used RabbitMQ, PostgreSQL, RocksDB, and Elasticsearch occasionally.Eventually, I became a lead developer: partially team management (resource planning, product planning, project management), hiring and mentoring (including internal Scala courses).

Moscow, Moscow City, Russia

I participated in several projects, with the majority of my work focused on a mobile messenger project. This involved full-stack Scala development: Scala with Akka on the backend and Scala.js (through Cordova) on the frontend. RethinkDB was used as the main database. The project was developed from scratch, and I was involved in both architecture design and functionality development.Other projects mainly included backend development using Scala, Akka, and the Play framework with AWS infrastructure, specifically using DynamoDB.

Novosibirsk Region, Russian Federation

I primarily worked on the Cisco XMP Topology project, which is part of the Cisco Prime Infrastructure platform.The project is designed for visualizing network topologies. Backend technologies included Java, Spring, and Hibernate. The frontend was built using Dojo. Initially, the TomSawyer library was used for graph visualization, but it was later switched to fully client-side rendering with mxGraph and a REST-like interface on the backend.

Новосибирская Область, Россия

At some point, I became a team leader: project management, architecture, mentoring. Introduced a continuous integration pipeline (using Jenkins), SVN to git migration (including an introduction of the git-flow approach). I conducted code reviews, trained colleagues, mainly in the testing department, and initiated the documentation process for products.

Новосибирская Область, Россия

The company's product was physical ATMs for various payments.I worked primarily on two projects, with ~50/50 ratio:1. JavaScript-based GUI for the ATM. The ATM itself was a C++ Qt project, but the GUI was written using web technologies on top of the WebKit engine. I've built a completely new version using more modern tech stack: Backbone, RequireJS, LESS, Grunt, a lot of HTML5 and CSS3. Built an automated testing platform with Mocha and Chai.2. Java EE processing backend. Supported a legacy version built with Java 7, Maven, Spring, Hibernate and OracleDB. Introduced unit testing with JUnit + JMockit. Later, I designed and initiated the development of a new backend version using Java 8, newer Spring 4 (core, data jpa, mvc, rest, security), and Gradle.

Новосибирская Область, Россия

Big fintech company. Development and support of a massive Java EE 7 product — Flextera. Involved extensive SQL work with various databases, including OracleDB, MS SQL, DB2, and Sybase. The architecture was built on top of the SOAP protocol.

Новосибирская Область, Россия

Small web-studio. I've been building small and medium websites using the LAMP stack (Linux, Apache WebServer, MySQL, PHP), along with HTML, CSS, JavaScript, jQuery, and Node.js.

Новосибирская Область, Россия