Backend (in ruby and elixir) and cli (in rust) for students learning how to code. General backend and admin. Specifically plagiarisation detection, which is a difficult problem to crack.Also, cli authentication using oauth2/openid, cli UX, http services for the http cli client, automated grading systems.Some of this was part of a team, and some was a particular aspect that I worked on solo for a period of a few months at a time.

Senior Software Developer

Device Magic collects data using forms on portable devices, and uses that to provide business reporting. One of the avenues they use is templates inside of OpenXML documents as supported by Microsoft Word and Excel. They already had a templating system working for Microsoft Word documents. I wrote the templating system for Excel documents.

Senior Freelance

Many projects using mainly ruby, some using rails, doing mostly backend and database work. Using the Sequel gem to interface with SQL data stores where possible, and several projects that did not use traditional MVC as its architecture.

Freelancer

ffi wrapper for ModSecurity. Backup gem driver for backblaze

I still write working solutions in ruby faster than in any other language I know.

Object/Class/Module/Kernel is brilliant once you grok it.
Best standard library and core classes I know of.

I came to Ruby because I needed a script language for a c++ engine. Once I had the wrapper working I figured I better learn this 'ruby' language. I kept finding myself going "oh wow, that's cool". 3 things: string interpolation, proper objects, heredoc syntax.


cli using http/s in reqwest and hyper, async using tokio, etc.

DCGs for gnarly parsing. Wrote Upl - a ruby wrapper for swi-prolog.

In all my projects I've been involved in designing how the system works, as well as in implementing that design.

Sometimes I look at a networking problem and think "I should really use zmq for this. But the rest of the team will hate it." I've been wrong every time.

Wrote a work queue system before Sidekiq existed. Sadly my client wouldn't let me open-source it.

I've fought with DB2, MSSQL, Oracle, Mysql. Postgresql just gets out of the way.

There's quite a bit of rails I'm not fond of, but it nonetheless provides a lot of functionality. Rails' biggest weakness is the use of @ivars to pass values to the views.

I use linux on my laptop, desktop, home router and mail server

Wrote an auth Plug for Phoenix using keycloak and a somewhat nonstandard auth flow.

c++11 is cooler than most people realise. Lambdas, concurrency and even better, the STL.

Interested in this, but not much good at it.

Building images and deploying containers.

handling large json files, converting json to other formats, eg csv xml excel messagepack

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John A.

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