Work experience
Senior Javascript Fullstack Developer
Finance and Banking field
5 MONTHS (Jan 2023 - Jul 2023)
The client, a Berlin-based banking integration startup, transforms financial processes, seamlessly integrating banking functionalities. The company empowers businesses to optimize operations and deliver exceptional financial services to their customers.

  • Assisted the growth team in data collection and analysis to target users effectively, gain insights into user behavior, and drive improvements in our tools.
  • Collaborated with the Platform team, contributing to frontend and backend development. Built new frontend components and improved backend functions, enhancing the overall functionality and user experience.
  • Took a proactive approach in identifying and resolving issues by adeptly debugging and rewriting backend functions, thereby optimizing system performance and ensuring long-term maintainability.

Skills: VueJs, NuxtJs, Tailwind, NodeJs, Typescript, GraphQL, Apollo, PostgresQL
Senior Javascript Fullstack Developer
Big Data in the e-commerce field
1 year 3 MONTHS (Sep 2021 - Dec 2022)
The client, a startup that helps Fulfillment By Amazon businesses in the USA market, was searching for solutions to create an intuitive interface for research and automations tools.

  • Decreased the loading time from an average of 30 seconds to under 3 seconds by analyzing and choosing the optimal technology for working with large amounts of data.
  • Improved 2x the accuracy of the researched data by providing a simple but efficient filtering system that suits the beginner user's needs.
  • Eliminated hours of manual procedures by automating the Amazon request review action, with possibility of creating more custom automations for specific user products.

Skills: React, NextJs, React-Bootstrap, NodeJs, ExpressJs, MongoDB, Docker, AWS
Senior Fullstack Developer
Marketing Services
1 YEAR 2 months (Jul 2020 - Sep 2021)
The client, one of the main Romanian marketing agencies, needed to increase their presence and build a direct connection with their customers by using mobile and web services.

  • Increased 2x the customers retention by creating web solutions for them to participate in on line marketing contests. Registration was made on the basis of the tax receipt data.
  • Improved with 20% the customers interaction by creating Facebook Chatbots from where they can register to marketing contests just with a photo of the tax receipt.
  • Dropped the waiting time from an average of 12 hours to less than 1 second by eliminating the manual check of tax receipts and replace it with an Optical Character Recognition scanner.

Skills: PHP, Laravel, PostgreSQL, NodeJs, ExpressJs, VueJs
PHP Fullstack Developer
Automotive Business
4 months (Feb 2020 - Jun 2020)
The client, an auto service owner, wanted an application to manage his database of clients and also to create efficient ways for interaction between the business and his customers.

  • Increased 50% the customers retention by creating a system that notify them with one week before the periodical maintenance services.
  • Decrease auto-service registration time with average 15 minutes per customer by creating an online form where customer can provide all technical informations about the car at the moment of appointment.
  • Improved 2x employee productivity by moving all the client database from physical to digital, making easy to access the history and technical data of the car by using just the unique registration ID.

Skills: PHP, Laravel, Bootstrap, MySQL
PHP Fullstack Developer
Real Estate Website I Onlinepedia Network
11 MONTHS (Mar 2019 - Feb 2020)
The client, a big real estate developer, was struggling to expand his business because of the lack of visibility on the internet and a well-designed website.

  • Increased 2x the sales in the period of 6 months by creating an intuitive UI and a SEO friendly website using techniques as a fully responsive on all devices, content that contains keywords, optimizing page titles and meta-tags.
  • Decreased the loading time from an average of 7 seconds to 1 second by using a technology suitable for a small website, instead of the hard loading framework that they used before.
  • Boosted by 40% the customer conversion by tracking the user behavior on the web pages and use the data for target marketing.

Skills: PHP, Laravel, Bootstrap, MySQL
About Me
I'm a senior React / Node.js fullstack Developer / Contractor / Freelancer with 5 years of experience, only interested in remote work.
I use my passion, skills and experience to design and implement top of the line software solutions for online businesses worldwide.

Calin Ovidiu Stefan

Senior React Fullstack Developer • Contractor • Freelancer

LINK Academy Certified

PHP Web Developer


National University of Arts
Bachelor Photography and Videography