Calin O.

Full Stack Developer

500 dollar
6 years
Cluj-Napoca, ROMANIA

My experience


FreelanceJanuary 2019 - Present

✅ I am a consultant/ contractor bringing value to clients - empowering and helping their businesses. Proficient with Javascript technologies, mainly with React/ Node.

✉️ Drop me a message if you think that my skills might be a fit for your needs!!!


AtlassianJune 2020 - December 2020

  • Worked on Atlassian's product - Statuspage.
  • Owned and delivered implementation of frontend performance metrics/ SLOs.
  • Worked on migrating legacy Statuspage users to Atlassian accounts.
  • Tech stack: Typescript, React, Graphql, Ruby, Rails

FlywireApril 2018 - May 2020

  • Collaborated with cross-functional development team members to deliver a strong platform and lots of backoffice apps which handle cross border payments, invoices, refunds and others.
  • Tech stack: React, Redux, Ruby, Node, AWS, Docker

SoftvisionMarch 2016 - April 2018

  • Microsoft Social Engagement, React.js app which collects data from social media websites and presents it to you in charts and graphs that you can use to spot emerging trends in people's comments
  • Agrian - A bundle of Ember.js apps developed for gathering and displaying complex data, related to certain farming fields, as different sorts of charts, heat maps or crop plans.

My stack


Ruby on Rails, JavaScript, TypeScript, Ruby, OOP

Analysis methods and tools

Design Patterns


Social Media

IT Infrastructure

Git, Docker




React Native


Ember.js, React-Redux, React.js, Machine Learning, AWS, Amazon Web Services (AWS)

My education and trainings

Certifications - Udemy

Masters Degree, Computer Science - Technical University of Cluj Napoca2015 - 2017

Bachelor of Science, Civil Engineering - Technical University of Cluj Napoca2011 - 2015