Senior Software Engineer, backend, java

freiberufler Senior Software Engineer, backend, java auf freelance.de
auf Anfrage
de  |  en  |  ru
100€/Stunde
10247 Berlin
26.08.2020

Kurzvorstellung

I'm a Software Engineer with more than 14 years of experience.
I mostly focus on backend and Java.
I've developed distributed systems like:
- open banking platform
- big data advertisement analytics platform
- MMO game server

Ich biete

IT, Entwicklung
  • Softwareentwicklung (allg.)
  • Amazon Web Services (AWS)
  • Spring
  • J2SE (Java SE)
  • J2EE (Java EE)
  • Hibernate (Java)
  • Software Architektur / Modellierung
  • JDBC (Java Database Connectivity)

Projekt‐ & Berufserfahrung

Senior Software Engineer (Festanstellung)
Zalando SE, Berlin
12/2019 – 6/2020 (7 Monate)
e-commerce
Tätigkeitszeitraum

12/2019 – 6/2020

Tätigkeitsbeschreibung

Was working on Presto (high performance distributed SQL query engine for big data) platform as part of data lake solution for BI users
Used technologies: Presto, AWS, K8S, Databricks, Hive metastore, Java

Eingesetzte Qualifikationen

Softwareentwicklung (allg.)


Senior Software Engineer (Festanstellung)
Deposit Solutions GmbH, Hamburg
10/2017 – 12/2019 (2 Jahre, 3 Monate)
Banken
Tätigkeitszeitraum

10/2017 – 12/2019

Tätigkeitsbeschreibung

Developed the platform which allowed Deutsche bank customers invest money into other banks without opening accounts.

Responsibilities:
Full cycle of new features implementation and deployment. Live system on call 24/7 support.

Used technologies:
Java, Spring Boot, Dropwizard, MySql, Microservices, Agile Methodologies, Docker

Eingesetzte Qualifikationen

Softwareentwicklung (allg.)


Software Engineer (Festanstellung)
Zalando SE, Hamburg
10/2016 – 9/2017 (1 Jahr)
e-commerce
Tätigkeitszeitraum

10/2016 – 9/2017

Tätigkeitsbeschreibung

Developed Big Data reporting project which processed millions of events per day and hundreds gigabytes of data.
The goal of the system is to measure performance of advertisement campaigns. It gathers advertisement click and view events as well as shop products view and buy events and measure them against each other for different time periods to calculate uplifts.

Responsibilities:

Spark jobs development, bugfixing, optimization
Microservices development
Database performance optimization
Integration with google DoubleClick Bid Manager and DoubleClick for Publishers advertisement services.
Integration with Good Data BI service


Used technologies:

Amazon Web Services: EMR, S3, EC2
Google BigQuery
Technologies:
Spark, Yarn, oozie
MySQL
Jruby
Git
Jenkins

Languages
Java, Ruby, Python, Scala, Clojure

Eingesetzte Qualifikationen

Softwareentwicklung (allg.)


Senior Software Engineer (Festanstellung)
Bigpoint GmbH, Hamburg
6/2014 – 9/2016 (2 Jahre, 4 Monate)
games
Tätigkeitszeitraum

6/2014 – 9/2016

Tätigkeitsbeschreibung

Developed Massively Multiplayer Online game server with 70k CCU

Resposibilities:
Full new features lifecycle:
Concepts review, architecture design,
technical design documents writing, estimation, subtasks breakdown, implementation.
Integration and unit tests development.
Refactoring, bugfixing,
Performance optimisation of highly multithreaded system
SQL queries optimisation
Took care of releases on production systems
Code review, new employees interviewing and education

Used technologies:
Java8
MySQL
Liquibase
google guice
Netty, ZeroMQ
Jenkins
svn
Maven
Yourkit
graprite/graphana

Eingesetzte Qualifikationen

Softwareentwicklung (allg.)


Ausbildung

Mathematik und Informatik
(Master)
Jahr: 2007
Ort: Staatliche Universität Sankt Petersburg

Qualifikationen

I'm a Software Engineer with more than 14 years of experience.

I mostly focus on backend and Java.

I've developed distributed systems like:
- open banking platform
- big data advertisement analytics platform
- massively multiplayer online game server
- master data managements system
- forex trading platform

Über mich

found in profile description
-Hyperlink entfernt-

Persönliche Daten

Sprache
  • Deutsch (Grundkenntnisse)
  • Englisch (Fließend)
  • Russisch (Muttersprache)
Reisebereitschaft
auf Anfrage
Arbeitserlaubnis
  • Europäische Union
Profilaufrufe
149
Alter
35
Berufserfahrung
14 Jahre und 10 Monate (seit 12/2005)

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