Position: Senior Backend Developer
Category: Ruby
English level: upper
Years of experience: 6

• Working closely with clients to establish problem specifications and system designs.
• Planning, architecting and developing web applications from the ground up.
• Conducting feasibility analysis for potential projects and estimating
approximate time for development process
• Creating system, integration and unit test cases.
• Reviewing code written by junior/middle developers, mentoring and giving
feedback about their code
• Working with webservices, both REST and SOAP,
• Writing a wrapper framework for webservices,
• Shipping a top-quality and best user experience products despite very complex and undetermined external services,
• Co-founding a startup about sport social network with rails back-end api and ionic front-end (it didn't go well because of consumer aspects),
• Teaching experience at only Rails course in the country (LKD Turkey Summer Camp)
I've used mostly Rails and I am a full-stack developer with more focused on the backend.
I wrote many complex sql queries for the tasks ORM's can't accomplish.
I wrote system, integration and unit tests on many different projects. 
I used Nodejs for about 2 year. 
I mostly worked in small teams. In one project where there was relatively more developers I was the team lead for 1.5 years.
I also made code reviews for many developers and gave advice about their code. And did feasibility analysis for potential projects.
I expect to work in a place that I can challenge myself and improve.
I am working as a Full stack developer but my main speciality is back-end development. I expect to work in a predominantly back-end position. I can do front-end tasks but I expect not to work as the main frontend developer if a framework like React or Angular involved in the project.