John Feminella

John Feminella

Mentor
5.0
(18 reviews)
US$75.00
For every 15 mins
24
Sessions/Jobs
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First 15 mins free for your first session
ABOUT ME
experienced technologist, occasional speaker, curiosity advocate
experienced technologist, occasional speaker, curiosity advocate

I've been a professional developer for over a decade, one of the all-time top-rated StackOverflow users, and most importantly, I love mentoring and helping people solve problems. Drop me a line if you'd like to chat!

Eastern Time (US & Canada) (-04:00)
Joined October 2014
EXPERTISE
12 years experience
I've worked with AWS, GCP, and Azure for years, and have built some of the world's largest enterprise systems running in cloud environmen...
I've worked with AWS, GCP, and Azure for years, and have built some of the world's largest enterprise systems running in cloud environments, particularly in the financial services and healthcare sectors. Accordingly, I can offer practical advice for scaling workloads of all shapes, sizes, and volumes onto any number of containerization and orchestration technologies.
9 years experience
I've written a number of major production web applications and supporting libraries/microservices in Ruby. Collectively they're serving a...
I've written a number of major production web applications and supporting libraries/microservices in Ruby. Collectively they're serving around a billion web requests per month! I've been a regular speaker at a number of Ruby conferences (around two dozen) and a prolific StackOverflow contributor on this topic.
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10 years experience
I've written .NET apps large and small and everywhere in between, primarily service applications using C# with periodic heavy doses of we...
I've written .NET apps large and small and everywhere in between, primarily service applications using C# with periodic heavy doses of web development thrown in with ASP.NET MVC.
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10 years experience
I'm an experienced software auditing professional who believes testing is not merely important for reducing defects but also critical to ...
I'm an experienced software auditing professional who believes testing is not merely important for reducing defects but also critical to developing an understanding of how one wants software to work.
Ruby
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Ruby
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6 years experience
Git is my go-to version control system. It's fast, efficient, and effective. Sometimes it's a little overwhelming for beginners, especial...
Git is my go-to version control system. It's fast, efficient, and effective. Sometimes it's a little overwhelming for beginners, especially if they're coming from a VCS that's not distributed, but despite these minor drawbacks Git is a major part of my daily workflow.
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8 years experience
2 years experience
I occasionally reach for CoffeeScript because I'm often hacking on projects that I already use it. While I generally think that transpile...
I occasionally reach for CoffeeScript because I'm often hacking on projects that I already use it. While I generally think that transpiled-to-JS languages are an unnecessary fad that don't add substantive value, I think they also have their place in some situations.
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REVIEWS FROM CLIENTS

5.0
(18 reviews)
cobriensr
cobriensr
October 2021
Was very knowledgeable and gracious with the advice he gave regarding the issues I was having. Had a great experience and would recommend to others.
Todd Metheny
Todd Metheny
April 2015
John was very knowledgable and helpful. He's a good communicator and easy to work with. He had to cancel a session once but communicated it as soon as he could and rescheduled as soon as he was able. I had a good experience and was happy with how it was handled. I would seek his help in the future.
Jason V.
Jason V.
March 2015
Very patient, and explained things as often as it was necessary for me to grasp what was going on.
jason warren
jason warren
March 2015
John is very knowledgable about Bluetooth, and was able to help us figure out some dead ends before we invested time implementing the wrong stuff.
Taylor Brooks
Taylor Brooks
February 2015
John was awesome. He gave me good insight on how to build object in a thread-safe for Sidekiq. Before the mentoring session, he also made a point to get a general understanding where I was having trouble so we didn't waste time coming up to speed.
Jared Galanis
Jared Galanis
February 2015
John resolved my issues quickly and perfectly, he was great!
Brett
Brett
January 2015
Very helpful and informative. Paused the session several times to troubleshoot an issue with my configuration etc. Great experience, thanks!
Tony Castiglione
Tony Castiglione
January 2015
John was a great teacher and walked my through how to solve our issue. He proposed several options for the various issues we had, and explained the pros and cons of each one. I cant thank him enough for his help.
Nick
Nick
January 2015
Great mentor. Very happy with session.
Mitch Kessler
Mitch Kessler
December 2014
Quickly understood the problem and paused our hangout when there were streaming issues.