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Profileimage by Simion tefnescu Senior Java/Javascript Fullstack Engineer from Constanta

Simion Ștefănescu

Constanta
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Last update: 03.04.2023

Senior Java/Javascript Fullstack Engineer

Company: Stefamescu Simion PFA
Graduation: BSc: Electronical Engineering; Master: Computer Science
Hourly-/Daily rates: show
Languages: German (Limited professional) | English (Native or Bilingual) | Romanian (Native or Bilingual)

Keywords

Java (Programming Language) JavaScript (Programming Language) Hardworking and Dedicated Mobile Application Software Professional Customer Services Testing

Attachments

stefanescu-simion-cv-updated.pdf

Skills

I am a freelance Fullstack developer with 5+ years of experience in developing web and mobile applications.

My expertise lies in Java and JavaScript, and I am proficient in deploying and testing applications.

Throughout my career, I have worked on a variety of projects and provided valuable solutions to clients.

I am committed to delivering high-quality work and meeting project deadlines.

I take pride in being a reliable and dedicated professional.

Project history

04/2022 - Present
Senior Java/Javascript Fullstack Engineer
BMW | COGNIZANT MOBILITY (Automotive and vehicle construction, 500-1000 employees)
The client, leader in Automotive manufacturing, was struggling with considerably slow
processes when releasing a new product or when managing older releases.

Eliminated monthly loses ammounting to $300K by understanding the complex core
logic and by developping an application to handle the entire lifecycle of a product
release eliminating the human error.

Decreased Delivery time by 20% by successfully training 1 newcomers on the architecture
and technologies of the application.

Skills: Java, Spring, Hibernate, JavaScript, React, Ext.js, Gitlab CI/CD, Pivotal Clud Foundry,
Checkmarx, Blackduck, AWS
11/2021 - 08/2022
Senior Java Fullstack Engineer
Dell (Internet and Information Technology, 1000-5000 employees)
Dell | Development of deployment and testing methods for production

The client, leader in Computer Software and Hardware manufacturing, was struggling
with considerably low user engagement due to the platform often being down after the
release of new versions.

Reduced the risk of a total server crash to virtually 0 by implementing a blue green
deployment strategy that redirected the user traffic to another server which
had the previous working version installed.

Saved 120 man hours per month by eliminating all bugs that caused platform crashes
by integrating a tool into the deployment pipeline to generate reports based on static code
scans.

Skills: Java, Spring, Hibernate, Gitlab CI/CD, Pivotal Clud Foundry, Checkmarx, Blackduck
01/2021 - 11/2021
Senior Java Backend Engineer
Regnology (Banks and financial services, 250-500 employees)
Regnology | Backend development for Regulatory Reporting application

The client, active in the banking industry was heading towards an unsuccessful project
release, resulting in considerable losses and potentially leading to bankruptcy, due
to a poorly maintained and bugged algorithm, responsible for calculating and reporting
financial indexes.

Eliminated monthly losses amounting to €300K and achieved a 42%
faster calculation time on indexes by redesigning the algorithm by
researching the functional documentation of financial instruments and by analyzing the
framework that was developed internally by the end-client for this project.

Optimised the time needed to process data by 80% by implementing a tool
responsible for collecting, analyzing and interpreting all the banking data.

Decreased delivery time by 50% by successfully training 2 newcomers on the
architecture and technologies of the application.

Skills: Java, SQL, SQLX, Jenkins, SAP Hana, PostgreSQL, Python, Jupyter
Notebook
09/2020 - 07/2021
C++ Developer (Trainer)
Politehnica University of Bucharest (Other, 50-250 employees)
Politehnica University of Bucharest | Introduction of new Programmers

The client, a respectable Romanian polytechnic university, was unable to cover all
existing courses due to lacking knowledgeable personnel to teach students.

Improved students' grades by 40% and reduced the time needed for the curricula to be
taught by 30% by restructuring courses and by designing a new course resource solution
implemented as a website.

Skills: C++, C, Linux, Wordpress, Git
01/2020 - 02/2021
JavaScript Fullstack Engineer
(Automotive and vehicle construction, 10-50 employees)
Contractor | Web e-commerce application

The client, a local car parts retailer, was struggling with expanding the business to a bigger
market, due to lacking an optimized website, as a result of using an unreliable and complicated
website builder tool.

Reduced visual and functional bugs fixing time by 80% by redesigning and implementing
a responsive web application by using vanilla HTML, CSS, and JavaScript, then deploying it
to Heroku.

Boosted monthly sales by 30% by researching market trends and adapting the website's
design to business requirements by keeping a startling line of communication with the client.

Skills: Javascript, Node.js, Express.js, HTML, CSS, MongoDB.
11/2019 - 06/2020
JavaScript Fullstack Engineer
BearingPoint (Internet and Information Technology, 500-1000 employees)
BearingPoint | Resources management solution

The client, operating in the Computer Software industry was failing to efficiently manage
resources, contracts and clients for large-scale construction projects, due to lacking an all-inone
management solution.

Reduced time spent on micromanaging projects by 30% by researching business needs
and by designing and implementing a web application that was able to manage all the
aspects of large-scale construction projects.

Skills: Javascript, SQL-Sequelize, Node.js, SAP Hana, GitHub
05/2019 - 09/2019
Mobile Engineer
GoPro (Consumer goods and retail, 1000-5000 employees)
GoPro | Automated testing solution for mobile app

The client, one of the biggest players in the consumer electronics industry was wasting
a great deal of time and was dealing with frequent errors during new releases, due to
painfully slow, inefficient and manual regression testing.
Improved developers' productivity by 70% by implementing two separate test suites, one
for the iOS app and one for the Android app, that ran all the regression tests automatically
with the help of a Jenkins pipeline.

Eliminated 70% of bugs by following the business needs and implementing them correctly in
the code.

Skills: Android SDK, Java, iOS, XCode, Swift, Jenkins, Python, UIAutomation Viewer

Local Availability

Only available for remote work

Other

? I am a Senior Java/ Javascript Fullstack/Backend/Frontend Developer / Consultant / Contractor / Freelancer with 4+ ????? ?? ??????????. I use my skills, experience and passion to design and implement top of the line software solutions for online businesses worldwide.

About my skills:

✔️Backend:
• Java
• Spring Boot
• Hibernate
• PostgreSQL, MySQL
• Node.js
• Javascript

✔️Frontend
• Javascript
• React
• HTML
• CSS

✔️DevOps
• Docker
• Jenkins
• GitLab

? Only interested in remote work.

? ???? ?? ? ??????? if you think my expertise could help your organization!

? Phone: +40 730 506 161
✉️ Email: simionstefanescu.dev@gmail.com
? Skype: https://join.skype.com/invite/ldMMAsKrGLLC
Profileimage by Simion tefnescu Senior Java/Javascript Fullstack Engineer from Constanta Senior Java/Javascript Fullstack Engineer
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