[email protected]

Alin Ionescu

Alin Ionescu

7 years of experience Romania

He uses his expertise, skills, and passion for designing and implementing scalable software solutions.
He is looking for exciting projects and new opportunities where he can add value through his excellent analytical thinking skills that help him find the best solutions.
He is a problem solver, and that keeps him involved in order to analyze and design in the most profitable and efficient way the business requirements.

JavaScript PHP MySQL RabbitMQ

Experience

Senior PHP Full Stack Developer
Nov, 2014 - Oct, 2015
eMag
  • The client, operating in e-commerce industry, was aiming to implement new projects but was
    dealing with a significant amount of reported incidents and high development time, due to lacking
    transparency in a poorly maintained and error-prone algorithm responsible for automatically
    validating orders and generating delivery intervals.

    ∠ Increased profit by $5M in the next financial year due to resumed postponed projects since
    refactoring reduced new implementations by 170% by redesigning the algorithm in several
    stages through in-depth research and troubleshooting, and the client reported no further
    incidents.

    ∠ Increased the number of processed orders per second by 150% by drastically decreasing
    lines of code and memory consumption and significantly increasing unit test coverage by
    using OOP and SOLID principles.
  • Technologies: PHP, PHP, Doctrine, MySQL, RabbitMQ, PHP Unit, Scrum, SonarQube, New Relic, Grafana, Kibana
Senior PHP Full Stack Developer
Nov, 2015 - Oct, 2016
eMag
  • The client, operating in the e-commerce industry, was losing a significant amount of money and
    was facing increasing response times from the support team, due to an overwhelming amount of
    customer tickets.

    ∠ Increased development commitment by 20% by significantly reducing the pressure on the
    development team by fixing bugs and making error messages more evident.
  • Technologies: PHP, RabbitMQ, PHP, JavaScript, Git, Jira, MySQL, New Relic, Grafana, Kibana
Senior PHP Full Stack Developer
Nov, 2016 - Jun, 2017
eMag
  • The client, an established provider of e-commerce services, desired to improve the client
    experience by generating loyalty points in revenue after the order was placed.

    ∠ Increased the number of orders by 15% and the user experience by 45% by designing a
    complex algorithm that had to find the client based on delivery mode and parsing the bank's
    transactions to find the order number notifying another application responsible for generating
    the points.
  • Technologies: PHP, API Testing, RabbitMQ, PHP, Git, MySQL, Jira
Senior PHP Full Stack Developer
Jul, 2017 - Jan, 2018
eMag
  • The client, a leading provider of e-commerce services, was dealing with delayed delivery of orders
    after a big campaign period, resulting in a higher-order cancellation rate due to a painfully slow
    invoice rate.

    ∠ Improved the invoice rate by 150%, by eliminating a pain API call, moving it to an
    asynchronous flow by using the RabbitMq queue, after doing in-depth with the NewRelic tool.

    ∠ Reduced order cancellation rates by 5% by ensuring on time delivery of packages by
    allowing the loading of more orders into the courier's calendars at a faster pace.
  • Technologies: PHP, PHP, API Testing, MySQL, Git, Jira
Senior PHP Full Stack Developer
Feb, 2018 - Jun, 2018
eMag
  • The client, an established provider of e-commerce services, was facing low productivity among
    employees after work from home was implemented, due to long waiting times for projects
    indexing in an IDE.

    ∠ Increased development production by 20% measured by Cycle Time and Commitment by
    dockerizing the application, instead of using sshfs to mount remotely an application that has
    over 400k lines of code, decreasing time wasted on loading the project remotely into
    PHPStorm ide.
  • Technologies: Docker, Makefile
Senior PHP Full Stack Developer
Jul, 2018 - Jul, 2020
GfM Research
  • The client, operating in the oil and gas industry, was struggling with implementing new business
    requirements due to huge estimations from the external development team on the application
    under license.

    ∠ Reduced license costs by $10k each month and estimates for new business requirements
    by 80% by designing and developing a new application from scratch by using the latest
    technologies, such as React and Symfony ApiPlatform, due to the app having lots of rendered
    common components and being perfectly integrated into business requirements.
  • Technologies: ReactJS, PHP, PHP, API Platform, Git, Jira, MySQL
Senior PHP Full Stack Developer
Aug, 2020 - Dec, 2020
eMag
  • The client, operating in the e-commerce industry, was facing low employee productivity and was
    aiming to add new objectives, but was struggling to do so, due to an inefficient way of collecting
    data for weekly reports.

    ∠ Reduced KPI monitoring time by 2 hours at the beginning of each week by designing and
    developing an interface by using the accurate algorithm calculating Cycle Time and
    Commitment for each team involved

    ∠ Reduced Cycle Time by 30% and enhanced teams commitment by 5% by creating a
    competitive environment and allowing employees to improve their skills.
  • Technologies: Python, Flask, ReactJS
Senior PHP Full Stack Developer
Jan, 2021 - Oct, 2021
eMag
  • The client, an established provider of e-commerce services, aimed to improve client experience in
    fashion categories by implementing the buy now pay later payment method because it struggled
    to keep up with the return of products and return of money due to complete online payment.

    ∠ Increased the number of orders by 25% and the user experience by 35% by leading the
    team to design an algorithm that ensures communication between systems allowing invoices
    before payment processing and notifying the withdrawal of money when needed.
  • Technologies: PHP, API Testing, RabbitMQ, PHP, MySQL, Git, Jira, Confluence
Senior PHP Full Stack Developer
Nov, 2021 - Mar, 2022
eMag
  • The client, an essential player in the e-commerce industry, faced cyber attacks and decided to keep
    the Framework, the libraries and PHP versions updated to the LTS.

    ∠ Decreased the number of cybernetic attacks by 80% by upgrading the Framework and
    external libraries to the LTS upgrades using composer and fixing all the deprecates.

    ∠ Improved the stability and speed of the application by 25% due to PHP upgrade to version
    8 using Docker, measured by Grafana and new relic tools.
  • Technologies: PHP, Composer, PHP
Senior PHP Full Stack Developer
Mar, 2022 - Sep, 2022
eMag
  • The client, an essential player in the e-commerce industry, was dealing with dissatisfied customers,
    due to orders being placed out of stock, resulting in losing money and an increased amount of
    complaints on a daily bases.

    ∠ Reduced revenue loss by $1.5M per year by leading the team in designing a new application
    that can decide whether or not the client can place an order in the checkout designing a library
    used by the site to try in real-time making reservations by a faster algorithm that decides in
    which storages should reserve the products.
  • Technologies: PHP, PHP, MySQL, Redis, ReactJS, Grafana, New Relic, Git, PHP Unit, Codecept.js

Education

Bachelor's in Computer Science
2013 - 2016
Titu Maiorescu University