Radek Ostrowski's Email Addresses & Phone Numbers

Talented Big Data Engineer able to hit the ground running. Effective in taking applications from inception to completion and in improving existing solutions. Particularly interested in Apache Spark (Certified Developer) and Scala. Aspiring Data Scientist.

Talented Big Data Engineer able to hit the ground running. Effective in taking applications from inception to completion and in improving existing solutions. Particularly interested in Apache Spark (Certified Developer) and Scala. Aspiring Data Scientist.

Built highly scalable productions systems able to handle hundreds of thousands transactions/s and effectively process Big Data​:

- Sony's PS4 and 4K-TV REST API account system, backed up by Cassandra

- GamesAnalytics' REST API server backed up by VoltDB and running on Amazon EC2

Also designed and built a project using the Play reactive platform and Scala. REST API backed up by MongoDB (with ReactiveMongo plugin). Front-end is a one-page app in Angular.js. Running on Heroku.

Specialties: Java, Scala, Web Services (REST), Spring, Spark and Hadoop ecosystem (MapReduce, Hive), SQL, NoSQL (Cassandra, MongoDB, ElasticSearch) and NewSQL Databases (VoltDB) and Cloud Computing.Big Data Engineer @ Scene App: http://www.sceneapp.io

Helping to design and build a community powered venue discovery platform offering personalised recommendations, planning with friends, curated and real-time information. Wearing Apache Spark developer hat for majority of the time. Using SparkSQL with DataFrames for data ingestion and Spark Streaming and MLlib for analytics. Coding in Scala with Akka and Kafka and running on Mesos. From September 2015 to Present (4 months) Greater New York City AreaBig Data Engineer @ TODO From April 2015 to Present (9 months) Edinburgh, United KingdomSenior Software Engineer @ Loans and Credit Cards:

Started and lead the Docker revolution within the department. Improved the user journey experience and added extra features as a member of a small and agile team. Projects based on techstack: Java and Scala, ScalaTest, BDD with Cucumber JVM, JBoss, REST, Gradle and Docker with Docker-Compose. From April 2015 to November 2015 (8 months) Edinburgh, United KingdomBig Data Engineer @ Member of an agile Enterprise Data Warehouse / Expedia Affiliate Network team.

Acted wind of change, helping to automate the release and development process. Worked on existing Hive and MapReduce workflows and applied changes based on Avro schema updates. Investigated and prototyped with Apache Spark.

Tools of trade: Hadoop, Hive, MapReduce/Java, Apache Spark, Azkaban, Chef, Git/Stash and Jenkins From February 2015 to April 2015 (3 months) London, United KingdomSenior Software Engineer / Team Leader @ Sony Network Entertainment International:

Built a next generation of the SNEI RESTful Java web service for Sony devices and platforms. Developed on top of Spring Framework and Cassandra. Offered authentication and authorisation capabilities based on OAuth2. Member of highly agile (Scrum) distributed team (Brussels and San Diego, CA). Focused on quality of the code by employing unit testing with 100% code coverage, BDD with Cucumber, code reviews with GitHub pull requests and Jenkins.

Sony Network Entertainment International:

“One Account – All Sony” global unified accounts integration project for PlayStation and other devices. Member of highly agile (Scrum+Kanban) distributed team (Brussels and San Diego, CA). Leading a team of three in Brussels and collaborating closely with the rest of the team in the US. Tools: Java with Spring and Maven, BDD with Cucumber-JVM and Scala, Splunk, GitHub and Jenkins.

Big Data/BI:

Production project collecting, analysing and visualising statistics from Sony devices. The data is processed using Hadoop (MapReduce and Hive). The data collection server and the BI portals are Java based (Spring MVC and REST). I secured the access to the web services (by extending Spring Security) and the relational databases. Other technologies used include Apache Karaf (OSGi) and Maven. From January 2013 to February 2015 (2 years 2 months) Contract Software Developer @ Toptal.com:

Designed and built a demonstration project (Trip Organiser) using the Play reactive platform and Scala. REST API backed up by MongoDB (with ReactiveMongo plugin). Front-end as a one-page app in Angular.js with local storage. Running on Heroku.

Usina Brasileira de Cristobalita Ltda:

Successfully completed many freelance projects like a command line Java app interacting with secure government servers all over Brazil, Spring RESTful server for e-commerce use, Java application for PKI smart cards and security tokens and iPhone application for invoice management. From February 2011 to September 2014 (3 years 8 months) Senior Developer @ Tackling the challenges of real-time data collection, predictive analytics, data measurement and user engagement for the millions of online and mobile computer games’ sessions. As a result, personalising the user’s gaming experience, increasing retention and revenue through optimised game design and individually targeted in-game messaging. As part of an agile in-house development team, responsible for the design, development and continuous update and enhancement of new features for the platforms and mobile SDKs. Employing technologies like Java, REST, Spring Framework, Knockout.js, SQL and NewSQL databases (PostgreSQL, Vertica and VoltDB), mobile (iOS, Android and Unity) and Hadoop (MapReduce and Hive) and running on Amazon Web Services. From April 2012 to December 2012 (9 months) Edinburgh, United KingdomApplications Consultant @ Contributed to several projects at Edinburgh Parallel Computing Centre:

EUDAT: http://www.eudat.eu

Involved in two work packages of this new EU project: Requirements and Services. I contributed to the requirements capture and use case definition, as well as developed a RESTful presentation layer (based on Jersey) for the software named OGSA-DAI.

ADMIRE: http://www.admire-project.eu

Leader of “Work Package 3: Test, Delivery and Support” from start to finish of this data intensive research project. Succeeded in having this EU project of total funding of 4.2 million € reviewed as “excellent”. During the lifespan of the project, designed and implemented the test platform, new software components (based on Java/REST/Spring/Hibernate) and extended the existing ones (like OGSA-DAI).

MSc in High Performance Computing: http://www.epcc.ed.ac.uk/msc

“Test infecting” the students by lecturing and leading tutorials on “Unit testing”, “Extreme Programming and Agile Methods” and "Cloud Computing Use Cases".

MapReduce:

Advised (as a technical reviewer) on the project investigating the usage of Hadoop/MapReduce and clouds (Amazon EC2 and Eucalyptus) for the analysis of post-genomic data.

MOPED:

Contributed to the success of this project (a spinout company was created: http://www.blackfordanalysis.com) by fixing performance problems of CUDA/C/JNI/Java code and improving its graphical user interface.

HPCSupport:

Made the life much easier for the people working as support helpdesk to the UK National Supercomputing Services, by designing and developing for them an iPhone application.

QCDGrid: http://www.gridpp.ac.uk/qcdgrid

Enabled the integration of the UKQCD community with the International Lattice Data Grid by implementing a Web Service layer (in Java). Improved and extended the core software DiGS (C and Globus Toolkit 4.2). At a later stage, guided the project as a technical reviewer. From September 2006 to April 2012 (5 years 8 months) Edinburgh, United KingdomApplications Developer (Summer Internship) @ Analysed the performance of client-server interactions in OGSA-DAI used for accessing and integrating distributed data resources. From June 2005 to September 2005 (4 months) MSc, High Performance Computing, Distinction @ The University of Edinburgh From 2005 to 2006 BSc Hons, Computing @ Edinburgh Napier University From 2004 to 2005 BSc, Physics and IT @ From 2001 to 2004 Radek Ostrowski is skilled in: Java, REST, Web Services, Spring, Scala, Big Data, Hadoop, Spark, Github, Play Framework, SQL, Software Design, Cloud Computing, Software Engineering, Data Mining