AAA_____

Valentin Padurean
Fullstack developer (Scala and JavaScript).
38 Viitorului
Sacele 505600, Brasov
Romania
(+40) 723 674 708
vpadure@gmail.com
https://github.com/padurean
EXPERIENCE
BITSoftware.eu, ​Brasov — ​Fullstack Scala & JavaScript
developer (backend & frontend)
January 2016 - Present
Working on Paydemic.com (payment gateway + platform for magazines
and newspapers to sell digital & printed content and subscriptions) and
Plotto.com (web app for video surveys and online marketing campaigns):
Coding AWS Lambdas in Scala behind API Gateway on the backend,
SPAs UX design and implementation using JavaScript and React on the
frontend.
Eloquentix.com, ​Brasov — ​Scala developer (backend)
May 2014 - May 2016
- Working on a "Virtual Power Plants" (VPPs) web application for
trading & dispatching of electrical energy on the german energy market
& grid.
SKILLS
Functional programming
Scala
JavaScript
LANGUAGES
English (fluent written &
spoken)
French (needs some practice)
German (beginner)
- Due to legal & technical limitations of the markets (e.g. a minimum
required energy production capacity of the plant), it makes sense for
energy providers to associate and sell energy from several power plants
as if a single plant was producing it. This tool allows one to create VPPs,
which are abstractions of several real power plants into a single one.
Application has a microservices architecture, components
communicating with each other through REST APIs. I was mostly
involved on three components:
- DB Service
- provides CRUD operations on a PostgreSQL database, but (not so
fortunately) also some business logic.
- Event Service
- receives events from various other components, persists them
through DB Service and dispatches them to subscribers using
WebSockets
- Notification Service
- receives notification events from the Event Service component and
transforms them into Email and/or SMS notifications based on

configured rules (e.g. based on user role ​ notification type mapping)
- Also got in contact (small tasks) with other components like:
- Asset Engine
- component responsible with monitoring and steering real power
plants
- featured a power plant state machine (e.g. in outage, delivering,
returning to normal, ...), implemented at first with Akka FSM and then
rewritten using just Akka Actor’s become / unbecome.
- VPP Engine
- component dealing with virtual power plants ​ e.g. receiving
commands to raise/lower the energy production, dividing the requested
value unequally among real power plants and forwarding those
commands to the real power plants.
- All components were built on top of Scala & Play framework and were
built using RX (Reactive Programming) concepts in order to have them
as horizontally scalable as possible. To achieve this, any io-​bound
processing has been implemented as much as possible by "tell ​ don't
ask" asynchronous non-​blocking principles and techniques, using
Scala's Futures or RX based on the Monix framework or Akka actors.
- Idiomatic functional programming in Scala was applied as much as
possible to leverage the type-safety, conciseness, maintainability and
readability of the codebase
- For Scala coding style, we used guides / rules like the ones described in
Scala best practices (https://github.com/alexandru/scala-best-practices)
(also some from Databricks Scala style Guide -
https://github.com/databricks/scala-style-guide)
- The development methodology was Scrum & Kanban, adapted as
needed for remote teams, using tools like Redmine, ScrumDo.
- Continuous integration was achieved using Jenkins CI. Also, there were
some ongoing changes which aimed to lead the deployment process to
Continuous Delivery, using Docker​-based deploys.
- Technology:
- Scala
- Play framework
- Akka
- Hibernate
- PostgreSQL
- Flyway (for database migrations)
- Monix (for reactive programming)
- Junit, Specs2, ScalaTest

- sbt
- Git, GitLab
- Intellij Idea
- OSX
Siemens, ​Brasov — ​Java Developer (backend)
December 2013 - May 2014
- Worked on Soarian project for the healthcare sector, in a team having
the main task to deliver medical data & in​-app tools to manipulate it
(e.g. synchronize the medicines list in the system with the latest list
emitted by official entity in US each month)
- Technology:
- Java
- GWT
EBS Romania​ (meanwhile acquired by NTT Data)​, ​Brasov
— ​Java developer (backend)
December 2012 - November 2013
- Java developer for EBS Romania & NTT Data Germany on the "Daimler
CRM" enterprise integration project (middleware providing integration
between several CRM systems among which SalesForce.com).
- Technology:
- Java EE 6
- IBM WebSphere Application Server 8.5
- Oracle Database 11g
- "Extension Platform" proprietary enterprise integration framework
(similar to Apache Camel)
- WebServices
- JMS using ActiveMQ
- Maven
- Jenkins CI
- JUnit
- Mockito
- Eclipse IDE
- Mylyn
- SalesForce.com Enterprise & Partner APIs (SOAP​).

Awinta GmBH, ​Brasov​ ​— ​Java developer (backend &
frontend)
March 2009 - November 2012
- Ecommerce development (online pharmacies) using Java (Customized
Apache Ofbiz framework), PostgreSQL, SOAP Web Services (Apache Axis
1)
- Development of JUMP n-tier application for pharmacies using
proprietary J2EE framework based on JBoss & Sybase as RDBMS.
- A desktop Java Swing-​based client application addresses all business
needs for pharmacies, like selling, stock management, price conditions
and ordering medicines at suppliers.
- Development of IntelliCleaner desktop application which allows the
user to import data records either from files (csv, fixed​-width format,
excel), either directly from database tables (MySQL, PostgreSQL,
HSQLDB supported) and then to perform fuzzy ​search operations on the
imported data in order to find and eventually eliminate possible
duplicate records.
- Technology:
- Java
- Swing
- MVC architecture
- Apache Lucene
- Spring
- PostgreSQL
- MySQL
- HSQLDB
- Hibernate
- Development of Blistermed web application used in hospitals to create
orders containing medication plans for various patients.
- The client (frontend) communicates with back​end processes which
forward the orders containing medication plans to a robot which
prepares the medication doses (also splitting pills) for each order.
- Technology:
- Struts 1
- JDBC
- DB2

LMS Intl.​ (meanwhile acquired by Siemens)​, ​Brasov​ ​—
C++ developer (desktop app for CAE - simulation of structures)
March 2006 - March 2009
- Development of the simulation software L MS Virtual.LAB used in
mechanical engineering for the pre​ & post-​processing phases of
structural FEA (Finite Element Analysis) .
- Technology:
- C++
- CATIA V5 API / framework (app built on top of CATIA V5)
Cambric Consulting​ (meanwhile acquired by Tata
Motors)​, ​Brasov​ ​— ​PHP developer (backend & frontend)
September 2005 - March 2006
- Design & Development of intranet web applications used internally for
resources management.
- Technology:
- HTML/CSS ○ JavaScript ○ PHP
- MySQL
- Photoshop
Cambric Consulting​ (meanwhile acquired by Tata
Motors)​, ​Brasov​ ​— ​CAD & CAE mechanical engineer
January 2003 - September 2005
- CAD (" Computer Aided Design") : mechanical design for automotive
industry
- Technology:
- Pro/Engineer
- CATIA V5
- CAE ("Computer Aided Engineering") i.e. Finite Element Analysis
(FEA): preprocessing, static and dynamic analysis and post-processing
- Technology:
- BetaCAE ANSA
- MSC Patran
- MSC Nastran
- MSC Dytran
Hip Media, ​Brasov​ ​— ​Web Design & integration
March 2000 - December 2000
- web & print layouts & ads/banners

- Technology:
- Photoshop
- Fireworks
- Flash
- integration & maintenance of web layouts (html/css/javascript)
- Technology:
- HTML
- CSS
- JavaScript
- PHP
EDUCATION
Product Design @ Technological Engineering faculty,
Transilvania University, Brasov, Romania
www2.unitbv.ro/dpm
1998 - 2003
Mathematics & Physics @ ”Andrei Saguna” highschool,
Brasov, Romania
1994 - 1998