A secondary responsibility was to methor students from the Starter School program. Those students were taking a nine months long course to learn how to build their own applications. Mostly were rails based, and I paired and menthored with them in the class room, or remotely using hipchat and via pull-requests.
As an Ruby on Rails contractor, I had the chance to build various applications. From small to large ones, and keep them running for a good time.
Some of the companies I worked for:
One of largest catholic comunities and TV station in Brazil. For those projects I leaded a team of 4 other developers.
They build vehicle tracking devices, used mostly by buses and trucks, and also they build the software to manage and monitor by their clients and the public transit management entities.
For them I built a couple of applications:
A british startup, building casper, an application that aims to monitor all companies in the world, their products and finances.
I build the first working prototype using Rails, neo4jrb, and the graph database Neo4j. The key challenge was the graph modeling and data collection.
Estimated medium to big projects with Function Point Analysis. Elaborate commercial and financial proposals. Coordinated big estimations.