Rails 4.1 - 5 Upgrade

This is TOP 5th developer in freelancer.com as you can see my profile: (https://www.freelancer.com/u/kchg.html) I am a senior Ruby on Rails developer and have completed many ROR projects before. So I can upgrade your Rails version perfectly. Please discuss in detauls. Thanks, KCHG.

Hi I can do this. Experienced Rails developer based in Sydney and available now. But I have some questions: 1. Do you have tests? 2. What DB you're using? 3. Any specific gems? Thanks

hello,how are you.i read your bid carefully. i am Ruby/Rails expert and have full experience for 12 years. Ruby/Rails is my top skill and passion. i can provide most quality and high speed. if you want to success, please contact me. Then, I will give you good result. hire me.

Hello I'm interesting your project very well I'm a Good Ruby, Ruby on Rails, Java, Math, Algorithm expert. I m quite well experienced in these jobs. Let's go ahead with me I want to service for you continously. Thanks

Hello Sir, We have gone through the details you have provided and we have already worked on a similar project before and can deliver as u have mentioned and would be pleased to work on this with you to deliver the results that you have expected and we have already worked on a similar project before and can deliver as u have mentioned We are sure you will not be disappointed if you give us this opportunity. Our team is experienced, creative & efficient enough to get your job done well. We have an impeccable record and all our clients enjoy working with us, we are sure that you will too, our prices are cheapest in market. [Removed for encouraging offsite communication which is against our Terms and Conditions.] for further discussion about the project I am ready to discuss with you with best Regards