12 December

Senior scala developer/Tech lead/Architect

Remote work, Ukraine · $4000 · More than 10 years of experience · Upper Intermediate

Play framework, akka, akka-streams, akka-http, akka-cluster, scala, sbt, elasticsearch, cqrs, mongodb, kafka, neo4j, docker, kubernetes, hazelcast, cassandra, lagom, sangria, http4s, cats, cats-effect, zio, parboiled2, shapeless, slick, postgresql, mysql

http4s, Scala, Akka, MongoDB, Kafka, PostgreSQL, Git, Sbt, Play Framework, Cassandra, Functional programming, SQL, Linux, CI, Docker, Circe, AWS, Redis, REST API

grpc-based pure functional lagom microservices in scala powered by zio. Analytics with elasticsearch and graph databases(neo4j, janusgraph) Online casino(Lagom, scala, cassandra, elasticsearch, akka-streams, cats, http4s) Expressions parser(parboiled2) Play and akka-based microservices for knowledge sharing project. Active using of akka-streams and alpakka Fullstack development of educational social network(scala, lift, mongodb)

Interesting projects desirable not a pure bigdata but could be mixed with bigdata/ai tasks


12 December

Senior Software Engineer 🔥 

Kyiv · $5000 · 3 years of experience · Intermediate

Have an experience with optimizing sbt for better performance, creating new project structure and migrating to it, developing DB model, migrating to new DB model, developing scalable, distributed and high-load applications, working with BigData (developing algorithms for parallel computing high amount of data using Spark), have experience with developing using such technologies as Play Framework, Kafka, Akka (Http, Streams, Persistent, Actor, Cluster), MongoDB, Redis, MS SQL, Postgres, also working on developing FEBE features using AngularJS and Ember.js using ES6 syntax.

Agile, Kanban, MongoDB, Play Framework, Scala, Scrum, Akka, CSS3, Git, HTML5, Docker, es6, JavaScript, Jenkins, Kafka, LESS, Redis, REST API, SASS, AngularJS, ember.js, SQL, Python, Cats, Cats-effect, Fs2, Circe, Spray, Functional programming

Have an experience with optimizing sbt for better performance, creating new project structure and migrating to it, developing DB model, migrating to new DB model, developing scalable, distributed and high-load applications, working with BigData (developing algorithms for parallel computing high amount of data using Spark), have experience with developing using such technologies as Play Framework, Kafka, Spark, Akka (Http, Streams, Persistent, Actor, Cluster), MongoDB, Redis, MS SQL, Postgres, also working on developing FEBE features using AngularJS with ES6, have an experience with Extreme programming, Agile (Scrum, Kanban, ScrumBan, QRum) and Waterfall. Very fast learner, communicable, responsible. And I love what I do.


11 December

C# developer

Remote work, Ukraine · $4500 · 5 years of experience · Upper Intermediate

Development, support and optimization of highly functional systems capable of withstanding heavy loads. Building web APIs using asp.net core and c#, and using the functional programming language scala, and the play framework. Experience with creating systems built on the model of actors (AKKA .net, akka scala).

C#, .NET, Entity Framework, LINQ, OOP, REST API, JavaScript, SQL, asp.net mvc, MVC, HTML, jQuery, CSS, WPF, Twitter Bootstrap, ASP.NET Core , Patterns, .Asp.Net Core, asp .net core, Bootstrap, MS SQL Server, REST, Resharper


10 December

Senior Big Data Software Engineer 🔥

Kyiv · $5000 · 4 years of experience · Upper Intermediate

Interested in distributed data processing, functional programming. Love Spark, have good knowledge of MapReduce paradigm and Hadoop ecosystem. Have experience in ad tech (RTB), FinTech, IoT domains. Skills: - Java 8, Scala - Spark (Core, SQL, Streaming), Hadoop (HDFS, MapReduce), Hive, Presto - AWS (EC2, S3, IAM, VPC, SNS/SQS, Cloudformation) - DBMS: • SQL (MySQL, PostgreSQL) • NoSQL (Cassandra, Druid, Redis) - Apache Kafka - Apache Airflow, - RESTful Web Service (Spring MVC, Vert.x) - Java tools for testing, logging, building (JUnit, TestNG, Mockito, log4j2, Maven) - VCS (git) - Docker, docker-compose - Continuous Integration (CircleCI, Jenkins)

Spark, Cassandra, Git, Linux, Kafka, Hadoop, Java, Airflow, Presto, AWS

I've built streaming processing pipeline for IoT data MapReduce jobs to Spark migration (100 terabytes/day), Was working onsite in the The USA/Berlin for several month

Building batch processing pipelines for terabytes/petabytes of data using Scala


9 December

Scala developer

Lviv · $2100 · 2 years of experience · Upper Intermediate

Scala, play, react, angular1/2, webpack, googleapis, docker IJava 8,9+, Jdbc, Hibernate, SpringMVC, JUnit, osgi, atlas-api, Spring Security, Websockets, SpringBoot, Maven, jsp/servlets and common techs,'ve done both web project in frontend/backend and hadoop project.

Java, Akka, Git, Scala, SQL, Sbt, Linux, Functional programming, Spark, MongoDB, Kafka, Docker, REST API, Cassandra, Spring, OOP, AWS, Play Framework, Maven, Hibernate, Cats, React, MySQL, JUnit, Regular Expression

I prefer to work extensively with codebase. I prefer to omit legacy projects. I prefer to omit support, bugfixing projects


8 December

Senior Java Developer

Moscow · $4250 · 5 years of experience · Upper Intermediate

******************************** Data engineer в BI проекте ******************************** Проект создавался как платформа для BI и построения отчетов для бизнес пользователей. Основные задачи: - интеграция с источниками данных - построение инфраструктуры мониторинга data quality - создание и поддержание инфраструктуры обеспечения правил доступа к данным - общение с бизнес-пользователями, сбор требований и создание отчетов Чем мы пользовались: - scala - как основной язык разработки - akka, akka http, apache http client - для разработки сервера - scala-parser-combinators - для имплементации парсера Clickhouse SQL - Apache Spark - для фидов данных из источников (в основном разные Oracle БД) в Clickhouse - Clickhouse - как основное хранилище сырых данных и аггрегации этих дынных для показа в отчетах конечных пользователей ***************************** Dev Lead ABAC project ***************************** Система контроля доступа построенная на принципе Attribute-based access control. Система использовалась для обеспечения фильтрации данных в юзер приложениях. Основными требованиями были обеспечение необходимого throwput (~5-15 мкс на запрос) и обновление пользовательских данных на лету при изменении их в источниках. Чего мы достигли: - проинтегрировались с ~10 источиниками данных - реализовали инфраструктуру поддержания up-to-date im-memory кэшей - реализовали ~15 различных правил доступа к разным данным внутри организации - с библиотекой проитегрировано ~20 систем - реализовали возможность row-level access controll на уровне базы данных в BI системе, основанной на ClickHouse Технологии: - java8 - основной язык разработки - Spring DI, Configuration- для серверных компонент - ANTLR4 - для DSL правил доступа - GRPC - для клиент-серверного проктокола поддержания in-memory кэшей Создал и "на общественных началах" поддерживаю 2 плдагина для Intellij Idea

Java, Spring, REST API, JSON, OOP, Design Patterns, REST, Jenkins, Mockito, ClickHouse, Apache Spark, Akka

ABAC - проект был на самом деле прикольный и о нем хочется рассказывать. Интеграция с BI системой особенно интересна, потому что мы в результате стали на лету изменять клиентский SQL в зависимости от заданных в системе правил доступа. Ну и по мелочи кроме того: Мы сделали 24/7 систему в организации, которая живет 24/5 (в выходные системы выключаются для патчинга и релизов) Мы сделали CI, который позволял в любой момент времени выпустить версию библиотеки, полностью готовую к проду. Проект все еще активно живет и развивается после того, как я передал его другому разработчику больше года назад.

Прямо сейчас моя область интересов это 1) data egeneering 2) SRE (но у меня нет hands-on опыта в этой области, кроме поддержки собственных приложений внетри организации) 3) database internal structures and algorithms - скорее хобби, которое иногда помогает с дизайном в data egeneering


6 December

java/scala developer 🔥 

Kyiv · $4000 · 4 years of experience · Upper Intermediate

Есть опыт разработки, как монолитных приложений, так и с помощью микросервисов. Опыт работы с унаследованным кодом. Работал, как в команде продуктовой компании, так и автономно в разных проектах в аутсорсовой компании. Опыт внедрения continuous integration.

AJAX, Apache Wicket, Git, Java EE, Java SE, JDBC, JSP, Maven, MySQL, PostgreSQL, Servlets, Spring Boot, Spring Data, Spring MVC, Spring Security, SVN, Tomcat, Wicket, XML, Angular 2, Angular.js, HTML, JSON, Vert.X, druid, graphite, Jenkins, JPA, SPARQL, Tiles, CSS, Docker, Redis, Scala, Thymeleaf

В данный момент больше ориентирован на Scala позиции


6 December

Senior Java Developer

Kyiv · $4500 · 4 years of experience · Advanced/Fluent

Java, Hibernate, Spring, Microservices, Maven, REST API, JUnit, JPA, Git, Angular 2


5 December

Software Engineer 🔥

Kharkiv, EU · $3000 · 3 years of experience · Advanced/Fluent

While having a mostly C++ background, I want to expand my skillset. In particular I'm interested in Big Data with Scala and machine learning with Python, but open to other opportunities (although not a fan of front-end development). Here's where I worked in the past: Backend Developer (Python) (September 2019 - November 2019): - Lead a 4-people team of front- and back-end developers - Oversaw development across all layers from database design to REST API specification - Designed an onion-based application architecture using DDD principles Technology stack included: Swagger, SQLAlchemy, PostgreSQL, SQLite, Docker, Angular. C++ Developer (June 2019 - September 2019): - Resolved binary interface compatibility issues - Implemented gathering hardware information for geolocation - Fixed bugs in a multithreaded application C++ Developer (November 2018 - June 2019): - Optimized high throughput code for performance - Used profiling tools to measure performance and detect bottlenecks - Written scripts to streamline the workflow for both myself and the team - Actively sought work process improvements - Rewrote the build system using CMake C++ Developer (July 2016 - October 2018): - Designed and implemented core algorithms and models - Provided memory and performance efficient solutions - Thoroughly covered implementation with unit and component tests - Generated feature specifications by researching the industry domain - Routinely discussed specifications with domain experts to provide the best solution - Constantly sought improvements to the product - Closely collaborated with other developers on solving architectural challenges - Coached interns into junior employees

Linux, Git, SQL, Docker, OOP, Python, Scrum, REST API, C++, Ruby

In 3 years I have worked on projects from various domains and used different tools. Some of the tasks include: - Designing application architectures - Leading a team of developers - Coaching interns into full-time employees - Designing and implementing core algorithms and modules - Verifying functionality by writing unit, integration and acceptance tests - Writing tools to assist me and my team in day-to-day tasks I am able to pick up new technologies and get into new domains in a short amount of time. Recently I made a switch from writing desktop applications and utility libraries in C++ to developing web services in Python. After only a couple of weeks I felt comfortable enough to lead a team with more experience with that specific technology than me.

What I like: - Small companies with family-like teams - Interesting projects with lots of work ahead - Skilled coworkers - Streamlined work processes What I don't like: - Restrictions in tools choice - Unmaintainable codebase - Bureaucracy


3 December

Senior Java/Scala Developer

Kharkiv · $3000 · 5 years of experience · Upper Intermediate

Development of high loaded analytics engine which is a leader in e-discovery sphere. Performance and accuracy our biggest value. Development of distributed microservices in Amazon and Azure clouds. Containerization with Docker and orchestration with Kubernetes. REST services based in Spring MVC and Hibernate ORM. Design discussions and decisions. Direct customer communication. Big experience in troubleshooting and investigation.

Java, Spring, Maven, Hibernate, REST API, REST, Docker, PostgreSQL, JUnit, Jenkins, Scala, Akka, Avro, JPA, SQL, Spring MVC, Spring Security, Spring AOP, Spring Boot

Resolved tons of customer defects. Successfuly implemented 5 big features. Overall performance improvement up to 2 times. Implemented Language support for analytics engine.

В поисках возможностей работать удалённо и с чувствовать ответственность за проект. Хочу принимать дизайн решения и активно участвовать в жизни проекта. Я больше про софт скилы. Я не хочу быть тех-лидом.


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